mcs/class/System/System.Diagnostics/Process.cs

   1 //
   2 // System.Diagnostics.Process.cs
   3 //
   4 // Authors:
   5 //      Dick Porter (dick@ximian.com)
   6 //      Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   7 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   8 //
   9 // (C) 2002 Ximian, Inc.
  10 // (C) 2003 Andreas Nahr
  11 // (c) 2004,2005,2006 Novell, Inc. (http://www.novell.com)
  12 //
  13
  14 //
  15 // Permission is hereby granted, free of charge, to any person obtaining
  16 // a copy of this software and associated documentation files (the
  17 // "Software"), to deal in the Software without restriction, including
  18 // without limitation the rights to use, copy, modify, merge, publish,
  19 // distribute, sublicense, and/or sell copies of the Software, and to
  20 // permit persons to whom the Software is furnished to do so, subject to
  21 // the following conditions:
  22 //
  23 // The above copyright notice and this permission notice shall be
  24 // included in all copies or substantial portions of the Software.
  25 //
  26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33 //
  34
  35 using System.IO;
  36 using System.Text;
  37 using System.ComponentModel;
  38 using System.ComponentModel.Design;
  39 using System.Runtime.CompilerServices;
  40 using System.Runtime.InteropServices;
  41 using System.Runtime.Remoting.Messaging;
  42 using System.Security.Permissions;
  43 using System.Collections.Generic;
  44 using System.Security;
  45 using System.Threading;
  46 using Microsoft.Win32.SafeHandles;
  47
  48 namespace System.Diagnostics {
  49
  50         [DefaultEvent ("Exited"), DefaultProperty ("StartInfo")]
  51         [Designer ("System.Diagnostics.Design.ProcessDesigner, " + Consts.AssemblySystem_Design)]
  52         [PermissionSet (SecurityAction.LinkDemand, Unrestricted = true)]
  53         [PermissionSet (SecurityAction.InheritanceDemand, Unrestricted = true)]
  54         [MonitoringDescription ("Represents a system process")]
  55         public class Process : Component
  56         {
  57                 [StructLayout(LayoutKind.Sequential)]
  58                 private struct ProcInfo
  59                 {
  60                         public IntPtr process_handle;
  61                         /* If thread_handle is ever needed for
  62                          * something, take out the CloseHandle() in
  63                          * the Start_internal icall in
  64                          * mono/metadata/process.c
  65                          */
  66                         public IntPtr thread_handle;
  67                         public int pid; // Contains -GetLastError () on failure.
  68                         public int tid;
  69                         public string [] envKeys;
  70                         public string [] envValues;
  71                         public string UserName;
  72                         public string Domain;
  73                         public IntPtr Password;
  74                         public bool LoadUserProfile;
  75                 };
  76
  77                 IntPtr process_handle;
  78                 int pid;
  79                 int enable_raising_events;
  80                 Thread background_wait_for_exit_thread;
  81                 ISynchronizeInvoke synchronizingObject;
  82                 EventHandler exited_event;
  83
  84                 /* Private constructor called from other methods */
  85                 private Process(IntPtr handle, int id) {
  86                         process_handle = handle;
  87                         pid=id;
  88                 }
  89
  90                 public Process ()
  91                 {
  92                 }
  93
  94                 [MonoTODO]
  95                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  96                 [MonitoringDescription ("Base process priority.")]
  97                 public int BasePriority {
  98                         get { return 0; }
  99                 }
 100
 101                 [DefaultValue (false), Browsable (false)]
 102                 [MonitoringDescription ("Check for exiting of the process to raise the apropriate event.")]
 103                 public bool EnableRaisingEvents {
 104                         get {
 105                                 return enable_raising_events == 1;
 106                         }
 107                         set {
 108                                 if (value && Interlocked.Exchange (ref enable_raising_events, 1) == 0)
 109                                         StartBackgroundWaitForExit ();
 110                         }
 111                 }
 112
 113                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 114                 private extern static int ExitCode_internal(IntPtr handle);
 115
 116                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden), Browsable (false)]
 117                 [MonitoringDescription ("The exit code of the process.")]
 118                 public int ExitCode {
 119                         get {
 120                                 if (process_handle == IntPtr.Zero)
 121                                         throw new InvalidOperationException ("Process has not been started.");
 122
 123                                 int code = ExitCode_internal (process_handle);
 124                                 if (code == 259)
 125                                         throw new InvalidOperationException ("The process must exit before getting the requested information.");
 126
 127                                 return code;
 128                         }
 129                 }
 130
 131                 /* Returns the process start time in Windows file
 132                  * times (ticks from DateTime(1/1/1601 00:00 GMT))
 133                  */
 134                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 135                 private extern static long ExitTime_internal(IntPtr handle);
 136
 137                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden), Browsable (false)]
 138                 [MonitoringDescription ("The exit time of the process.")]
 139                 public DateTime ExitTime {
 140                         get {
 141                                 if (process_handle == IntPtr.Zero)
 142                                         throw new InvalidOperationException ("Process has not been started.");
 143
 144                                 if (!HasExited)
 145                                         throw new InvalidOperationException ("The process must exit before " +
 146                                                                         "getting the requested information.");
 147
 148                                 return(DateTime.FromFileTime(ExitTime_internal(process_handle)));
 149                         }
 150                 }
 151
 152                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden), Browsable (false)]
 153                 [MonitoringDescription ("Handle for this process.")]
 154                 public IntPtr Handle {
 155                         get {
 156                                 if (process_handle == IntPtr.Zero)
 157                                         throw new InvalidOperationException ("No process is associated with this object.");
 158                                 return(process_handle);
 159                         }
 160                 }
 161
 162                 [MonoTODO]
 163                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 164                 [MonitoringDescription ("Handles for this process.")]
 165                 public int HandleCount {
 166                         get {
 167                                 return(0);
 168                         }
 169                 }
 170
 171                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden), Browsable (false)]
 172                 [MonitoringDescription ("Determines if the process is still running.")]
 173                 public bool HasExited {
 174                         get {
 175                                 if (process_handle == IntPtr.Zero)
 176                                         throw new InvalidOperationException ("Process has not been started.");
 177
 178                                 int exitcode = ExitCode_internal (process_handle);
 179
 180                                 if(exitcode==259) {
 181                                         /* STILL_ACTIVE */
 182                                         return(false);
 183                                 } else {
 184                                         return(true);
 185                                 }
 186                         }
 187                 }
 188
 189                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 190                 [MonitoringDescription ("Process identifier.")]
 191                 public int Id {
 192                         get {
 193                                 if (pid == 0)
 194                                         throw new InvalidOperationException ("Process ID has not been set.");
 195
 196                                 return(pid);
 197                         }
 198                 }
 199
 200                 [MonoTODO]
 201                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden), Browsable (false)]
 202                 [MonitoringDescription ("The name of the computer running the process.")]
 203                 public string MachineName {
 204                         get {
 205                                 return("localhost");
 206                         }
 207                 }
 208
 209                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden), Browsable (false)]
 210                 [MonitoringDescription ("The main module of the process.")]
 211                 public ProcessModule MainModule {
 212                         get {
 213                                 return(this.Modules[0]);
 214                         }
 215                 }
 216
 217                 [MonoTODO]
 218                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 219                 [MonitoringDescription ("The handle of the main window of the process.")]
 220                 public IntPtr MainWindowHandle {
 221                         get {
 222                                 return((IntPtr)0);
 223                         }
 224                 }
 225
 226                 [MonoTODO]
 227                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 228                 [MonitoringDescription ("The title of the main window of the process.")]
 229                 public string MainWindowTitle {
 230                         get {
 231                                 return("null");
 232                         }
 233                 }
 234
 235                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 236                 private extern static bool GetWorkingSet_internal(IntPtr handle, out int min, out int max);
 237                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 238                 private extern static bool SetWorkingSet_internal(IntPtr handle, int min, int max, bool use_min);
 239
 240                 /* LAMESPEC: why is this an IntPtr not a plain int? */
 241                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 242                 [MonitoringDescription ("The maximum working set for this process.")]
 243                 public IntPtr MaxWorkingSet {
 244                         get {
 245                                 if(HasExited)
 246                                         throw new InvalidOperationException(
 247                                                 "The process " + ProcessName +
 248                                                 " (ID " + Id + ") has exited");
 249
 250                                 int min;
 251                                 int max;
 252                                 bool ok=GetWorkingSet_internal(process_handle, out min, out max);
 253                                 if(ok==false) {
 254                                         throw new Win32Exception();
 255                                 }
 256
 257                                 return((IntPtr)max);
 258                         }
 259                         set {
 260                                 if(HasExited) {
 261                                         throw new InvalidOperationException("The process " + ProcessName + " (ID " + Id + ") has exited");
 262                                 }
 263
 264                                 bool ok=SetWorkingSet_internal(process_handle, 0, value.ToInt32(), false);
 265                                 if(ok==false) {
 266                                         throw new Win32Exception();
 267                                 }
 268                         }
 269                 }
 270
 271                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 272                 [MonitoringDescription ("The minimum working set for this process.")]
 273                 public IntPtr MinWorkingSet {
 274                         get {
 275                                 if(HasExited)
 276                                         throw new InvalidOperationException(
 277                                                 "The process " + ProcessName +
 278                                                 " (ID " + Id + ") has exited");
 279
 280                                 int min;
 281                                 int max;
 282                                 bool ok= GetWorkingSet_internal (process_handle, out min, out max);
 283                                 if(!ok)
 284                                         throw new Win32Exception();
 285                                 return ((IntPtr) min);
 286                         }
 287                         set {
 288                                 if(HasExited)
 289                                         throw new InvalidOperationException(
 290                                                 "The process " + ProcessName +
 291                                                 " (ID " + Id + ") has exited");
 292
 293                                 bool ok = SetWorkingSet_internal (process_handle, value.ToInt32(), 0, true);
 294                                 if (!ok)
 295                                         throw new Win32Exception();
 296                         }
 297                 }
 298
 299                 /* Returns the list of process modules.  The main module is
 300                  * element 0.
 301                  */
 302                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 303                 private extern ProcessModule[] GetModules_internal(IntPtr handle);
 304
 305                 private ProcessModuleCollection module_collection;
 306
 307                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden), Browsable (false)]
 308                 [MonitoringDescription ("The modules that are loaded as part of this process.")]
 309                 public ProcessModuleCollection Modules {
 310                         get {
 311                                 if (module_collection == null)
 312                                         module_collection = new ProcessModuleCollection(
 313                                                 GetModules_internal (process_handle));
 314                                 return(module_collection);
 315                         }
 316                 }
 317
 318                 /* data type is from the MonoProcessData enum in mono-proclib.h in the runtime */
 319                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 320                 private extern static long GetProcessData (int pid, int data_type, out int error);
 321
 322                 [MonoTODO]
 323                 [Obsolete ("Use NonpagedSystemMemorySize64")]
 324                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 325                 [MonitoringDescription ("The number of bytes that are not pageable.")]
 326                 public int NonpagedSystemMemorySize {
 327                         get {
 328                                 return(0);
 329                         }
 330                 }
 331
 332                 [Obsolete ("Use PagedMemorySize64")]
 333                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 334                 [MonitoringDescription ("The number of bytes that are paged.")]
 335                 public int PagedMemorySize {
 336                         get {
 337                                 return(int)PagedMemorySize64;
 338                         }
 339                 }
 340
 341                 [Obsolete ("Use PagedSystemMemorySize64")]
 342                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 343                 [MonitoringDescription ("The amount of paged system memory in bytes.")]
 344                 public int PagedSystemMemorySize {
 345                         get {
 346                                 return(int)PagedMemorySize64;
 347                         }
 348                 }
 349
 350                 [MonoTODO]
 351                 [Obsolete ("Use PeakPagedMemorySize64")]
 352                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 353                 [MonitoringDescription ("The maximum amount of paged memory used by this process.")]
 354                 public int PeakPagedMemorySize {
 355                         get {
 356                                 return(0);
 357                         }
 358                 }
 359
 360                 [Obsolete ("Use PeakVirtualMemorySize64")]
 361                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 362                 [MonitoringDescription ("The maximum amount of virtual memory used by this process.")]
 363                 public int PeakVirtualMemorySize {
 364                         get {
 365                                 int error;
 366                                 return (int)GetProcessData (pid, 8, out error);
 367                         }
 368                 }
 369
 370                 [Obsolete ("Use PeakWorkingSet64")]
 371                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 372                 [MonitoringDescription ("The maximum amount of system memory used by this process.")]
 373                 public int PeakWorkingSet {
 374                         get {
 375                                 int error;
 376                                 return (int)GetProcessData (pid, 5, out error);
 377                         }
 378                 }
 379
 380                 [MonoTODO]
 381                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 382                 [MonitoringDescription ("The number of bytes that are not pageable.")]
 383                 [ComVisible (false)]
 384                 public long NonpagedSystemMemorySize64 {
 385                         get {
 386                                 return(0);
 387                         }
 388                 }
 389
 390                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 391                 [MonitoringDescription ("The number of bytes that are paged.")]
 392                 [ComVisible (false)]
 393                 public long PagedMemorySize64 {
 394                         get {
 395                                 int error;
 396                                 return GetProcessData (pid, 12, out error);
 397                         }
 398                 }
 399
 400                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 401                 [MonitoringDescription ("The amount of paged system memory in bytes.")]
 402                 [ComVisible (false)]
 403                 public long PagedSystemMemorySize64 {
 404                         get {
 405                                 return PagedMemorySize64;
 406                         }
 407                 }
 408
 409                 [MonoTODO]
 410                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 411                 [MonitoringDescription ("The maximum amount of paged memory used by this process.")]
 412                 [ComVisible (false)]
 413                 public long PeakPagedMemorySize64 {
 414                         get {
 415                                 return(0);
 416                         }
 417                 }
 418
 419                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 420                 [MonitoringDescription ("The maximum amount of virtual memory used by this process.")]
 421                 [ComVisible (false)]
 422                 public long PeakVirtualMemorySize64 {
 423                         get {
 424                                 int error;
 425                                 return GetProcessData (pid, 8, out error);
 426                         }
 427                 }
 428
 429                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 430                 [MonitoringDescription ("The maximum amount of system memory used by this process.")]
 431                 [ComVisible (false)]
 432                 public long PeakWorkingSet64 {
 433                         get {
 434                                 int error;
 435                                 return GetProcessData (pid, 5, out error);
 436                         }
 437                 }
 438
 439                 [MonoTODO]
 440                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 441                 [MonitoringDescription ("Process will be of higher priority while it is actively used.")]
 442                 public bool PriorityBoostEnabled {
 443                         get {
 444                                 return(false);
 445                         }
 446                         set {
 447                         }
 448                 }
 449
 450                 [MonoLimitation ("Under Unix, only root is allowed to raise the priority.")]
 451                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 452                 [MonitoringDescription ("The relative process priority.")]
 453                 public ProcessPriorityClass PriorityClass {
 454                         get {
 455                                 if (process_handle == IntPtr.Zero)
 456                                         throw new InvalidOperationException ("Process has not been started.");
 457
 458                                 int error;
 459                                 int prio = GetPriorityClass (process_handle, out error);
 460                                 if (prio == 0)
 461                                         throw new Win32Exception (error);
 462                                 return (ProcessPriorityClass) prio;
 463                         }
 464                         set {
 465                                 if (!Enum.IsDefined (typeof (ProcessPriorityClass), value))
 466                                         throw new InvalidEnumArgumentException (
 467                                                 "value", (int) value,
 468                                                 typeof (ProcessPriorityClass));
 469
 470                                 if (process_handle == IntPtr.Zero)
 471                                         throw new InvalidOperationException ("Process has not been started.");
 472
 473                                 int error;
 474                                 if (!SetPriorityClass (process_handle, (int) value, out error)) {
 475                                         CheckExited ();
 476                                         throw new Win32Exception (error);
 477                                 }
 478                         }
 479                 }
 480
 481                 void CheckExited () {
 482                         if (HasExited)
 483                                 throw new InvalidOperationException (String.Format ("Cannot process request because the process ({0}) has exited.", Id));
 484                 }
 485
 486                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 487                 static extern int GetPriorityClass (IntPtr handle, out int error);
 488
 489                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 490                 static extern bool SetPriorityClass (IntPtr handle, int priority, out int error);
 491
 492                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 493                 [MonitoringDescription ("The amount of memory exclusively used by this process.")]
 494                 [Obsolete ("Use PrivateMemorySize64")]
 495                 public int PrivateMemorySize {
 496                         get {
 497                                 int error;
 498                                 return (int)GetProcessData (pid, 6, out error);
 499                         }
 500                 }
 501
 502                 [MonoNotSupported ("")]
 503                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 504                 [MonitoringDescription ("The session ID for this process.")]
 505                 public int SessionId {
 506                         get { throw new NotImplementedException (); }
 507                 }
 508
 509                 /* the meaning of type is as follows: 0: user, 1: system, 2: total */
 510                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 511                 private extern static long Times (IntPtr handle, int type);
 512
 513                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 514                 [MonitoringDescription ("The amount of processing time spent in the OS core for this process.")]
 515                 public TimeSpan PrivilegedProcessorTime {
 516                         get {
 517                                 return new TimeSpan (Times (process_handle, 1));
 518                         }
 519                 }
 520
 521                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 522                 private extern static string ProcessName_internal(IntPtr handle);
 523
 524                 private string process_name=null;
 525
 526                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 527                 [MonitoringDescription ("The name of this process.")]
 528                 public string ProcessName {
 529                         get {
 530                                 if(process_name==null) {
 531
 532                                         if (process_handle == IntPtr.Zero)
 533                                                 throw new InvalidOperationException ("No process is associated with this object.");
 534
 535                                         process_name=ProcessName_internal(process_handle);
 536                                         /* If process_name is _still_
 537                                          * null, assume the process
 538                                          * has exited
 539                                          */
 540                                         if (process_name == null)
 541                                                 throw new InvalidOperationException ("Process has exited, so the requested information is not available.");
 542
 543                                         /* Strip the suffix (if it
 544                                          * exists) simplistically
 545                                          * instead of removing any
 546                                          * trailing \.???, so we dont
 547                                          * get stupid results on sane
 548                                          * systems
 549                                          */
 550                                         if(process_name.EndsWith(".exe") ||
 551                                            process_name.EndsWith(".bat") ||
 552                                            process_name.EndsWith(".com")) {
 553                                                 process_name=process_name.Substring(0, process_name.Length-4);
 554                                         }
 555                                 }
 556                                 return(process_name);
 557                         }
 558                 }
 559
 560                 [MonoTODO]
 561                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 562                 [MonitoringDescription ("Allowed processor that can be used by this process.")]
 563                 public IntPtr ProcessorAffinity {
 564                         get {
 565                                 return((IntPtr)0);
 566                         }
 567                         set {
 568                         }
 569                 }
 570
 571                 [MonoTODO]
 572                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 573                 [MonitoringDescription ("Is this process responsive.")]
 574                 public bool Responding {
 575                         get {
 576                                 return(false);
 577                         }
 578                 }
 579
 580                 private StreamReader error_stream=null;
 581                 bool error_stream_exposed;
 582
 583                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden), Browsable (false)]
 584                 [MonitoringDescription ("The standard error stream of this process.")]
 585                 public StreamReader StandardError {
 586                         get {
 587                                 if (error_stream == null)
 588                                         throw new InvalidOperationException("Standard error has not been redirected");
 589
 590                                 if ((async_mode & AsyncModes.AsyncError) != 0)
 591                                         throw new InvalidOperationException ("Cannot mix asynchronous and synchonous reads.");
 592
 593                                 async_mode |= AsyncModes.SyncError;
 594
 595                                 error_stream_exposed = true;
 596                                 return(error_stream);
 597                         }
 598                 }
 599
 600                 private StreamWriter input_stream=null;
 601                 bool input_stream_exposed;
 602
 603                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden), Browsable (false)]
 604                 [MonitoringDescription ("The standard input stream of this process.")]
 605                 public StreamWriter StandardInput {
 606                         get {
 607                                 if (input_stream == null)
 608                                         throw new InvalidOperationException("Standard input has not been redirected");
 609
 610                                 input_stream_exposed = true;
 611                                 return(input_stream);
 612                         }
 613                 }
 614
 615                 private StreamReader output_stream=null;
 616                 bool output_stream_exposed;
 617
 618                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden), Browsable (false)]
 619                 [MonitoringDescription ("The standard output stream of this process.")]
 620                 public StreamReader StandardOutput {
 621                         get {
 622                                 if (output_stream == null)
 623                                         throw new InvalidOperationException("Standard output has not been redirected");
 624
 625                                 if ((async_mode & AsyncModes.AsyncOutput) != 0)
 626                                         throw new InvalidOperationException ("Cannot mix asynchronous and synchonous reads.");
 627
 628                                 async_mode |= AsyncModes.SyncOutput;
 629
 630                                 output_stream_exposed = true;
 631                                 return(output_stream);
 632                         }
 633                 }
 634
 635                 private ProcessStartInfo start_info=null;
 636
 637                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content), Browsable (false)]
 638                 [MonitoringDescription ("Information for the start of this process.")]
 639                 public ProcessStartInfo StartInfo {
 640                         get {
 641                                 if (start_info == null)
 642                                         start_info = new ProcessStartInfo();
 643                                 return start_info;
 644                         }
 645                         set {
 646                                 if (value == null)
 647                                         throw new ArgumentNullException("value");
 648                                 start_info = value;
 649                         }
 650                 }
 651
 652                 /* Returns the process start time in Windows file
 653                  * times (ticks from DateTime(1/1/1601 00:00 GMT))
 654                  */
 655                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 656                 private extern static long StartTime_internal(IntPtr handle);
 657
 658                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 659                 [MonitoringDescription ("The time this process started.")]
 660                 public DateTime StartTime {
 661                         get {
 662                                 return(DateTime.FromFileTime(StartTime_internal(process_handle)));
 663                         }
 664                 }
 665
 666                 [DefaultValue (null), Browsable (false)]
 667                 [MonitoringDescription ("The object that is used to synchronize event handler calls for this process.")]
 668                 public ISynchronizeInvoke SynchronizingObject {
 669                         get { return synchronizingObject; }
 670                         set { synchronizingObject = value; }
 671                 }
 672
 673                 [MonoTODO]
 674                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 675                 [MonitoringDescription ("The number of threads of this process.")]
 676                 public ProcessThreadCollection Threads {
 677                         get {
 678                                 // This'll return a correctly-sized array of empty ProcessThreads for now.
 679                                 int error;
 680                                 return new ProcessThreadCollection(new ProcessThread[GetProcessData (pid, 0, out error)]);
 681                         }
 682                 }
 683
 684                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 685                 [MonitoringDescription ("The total CPU time spent for this process.")]
 686                 public TimeSpan TotalProcessorTime {
 687                         get {
 688                                 return new TimeSpan (Times (process_handle, 2));
 689                         }
 690                 }
 691
 692                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 693                 [MonitoringDescription ("The CPU time spent for this process in user mode.")]
 694                 public TimeSpan UserProcessorTime {
 695                         get {
 696                                 return new TimeSpan (Times (process_handle, 0));
 697                         }
 698                 }
 699
 700                 [Obsolete ("Use VirtualMemorySize64")]
 701                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 702                 [MonitoringDescription ("The amount of virtual memory currently used for this process.")]
 703                 public int VirtualMemorySize {
 704                         get {
 705                                 int error;
 706                                 return (int)GetProcessData (pid, 7, out error);
 707                         }
 708                 }
 709
 710                 [Obsolete ("Use WorkingSet64")]
 711                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 712                 [MonitoringDescription ("The amount of physical memory currently used for this process.")]
 713                 public int WorkingSet {
 714                         get {
 715                                 int error;
 716                                 return (int)GetProcessData (pid, 4, out error);
 717                         }
 718                 }
 719
 720                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 721                 [MonitoringDescription ("The amount of memory exclusively used by this process.")]
 722                 [ComVisible (false)]
 723                 public long PrivateMemorySize64 {
 724                         get {
 725                                 int error;
 726                                 return GetProcessData (pid, 6, out error);
 727                         }
 728                 }
 729
 730                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 731                 [MonitoringDescription ("The amount of virtual memory currently used for this process.")]
 732                 [ComVisible (false)]
 733                 public long VirtualMemorySize64 {
 734                         get {
 735                                 int error;
 736                                 return GetProcessData (pid, 7, out error);
 737                         }
 738                 }
 739
 740                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 741                 [MonitoringDescription ("The amount of physical memory currently used for this process.")]
 742                 [ComVisible (false)]
 743                 public long WorkingSet64 {
 744                         get {
 745                                 int error;
 746                                 return GetProcessData (pid, 4, out error);
 747                         }
 748                 }
 749
 750                 public void Close()
 751                 {
 752                         Dispose (true);
 753                 }
 754
 755                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 756                 extern static bool Kill_internal (IntPtr handle, int signo);
 757
 758                 /* int kill -> 1 KILL, 2 CloseMainWindow */
 759                 bool Close (int signo)
 760                 {
 761                         if (process_handle == IntPtr.Zero)
 762                                 throw new SystemException ("No process to kill.");
 763
 764                         int exitcode = ExitCode_internal (process_handle);
 765                         if (exitcode != 259)
 766                                 throw new InvalidOperationException ("The process already finished.");
 767
 768                         return Kill_internal (process_handle, signo);
 769                 }
 770
 771                 public bool CloseMainWindow ()
 772                 {
 773                         return Close (2);
 774                 }
 775
 776                 [MonoTODO]
 777                 public static void EnterDebugMode() {
 778                 }
 779
 780                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 781                 private extern static IntPtr GetProcess_internal(int pid);
 782
 783                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 784                 private extern static int GetPid_internal();
 785
 786                 public static Process GetCurrentProcess()
 787                 {
 788                         int pid = GetPid_internal();
 789                         IntPtr proc = GetProcess_internal(pid);
 790
 791                         if (proc == IntPtr.Zero)
 792                                 throw new SystemException("Can't find current process");
 793
 794                         return (new Process (proc, pid));
 795                 }
 796
 797                 public static Process GetProcessById(int processId)
 798                 {
 799                         IntPtr proc = GetProcess_internal(processId);
 800
 801                         if (proc == IntPtr.Zero)
 802                                 throw new ArgumentException ("Can't find process with ID " + processId.ToString ());
 803
 804                         return (new Process (proc, processId));
 805                 }
 806
 807                 [MonoTODO ("There is no support for retrieving process information from a remote machine")]
 808                 public static Process GetProcessById(int processId, string machineName) {
 809                         if (machineName == null)
 810                                 throw new ArgumentNullException ("machineName");
 811
 812                         if (!IsLocalMachine (machineName))
 813                                 throw new NotImplementedException ();
 814
 815                         return GetProcessById (processId);
 816                 }
 817
 818                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 819                 private extern static int[] GetProcesses_internal();
 820
 821                 public static Process[] GetProcesses ()
 822                 {
 823                         int [] pids = GetProcesses_internal ();
 824                         if (pids == null)
 825                                 return new Process [0];
 826
 827                         var proclist = new List<Process> (pids.Length);
 828                         for (int i = 0; i < pids.Length; i++) {
 829                                 try {
 830                                         proclist.Add (GetProcessById (pids [i]));
 831                                 } catch (SystemException) {
 832                                         /* The process might exit
 833                                          * between
 834                                          * GetProcesses_internal and
 835                                          * GetProcessById
 836                                          */
 837                                 }
 838                         }
 839
 840                         return proclist.ToArray ();
 841                 }
 842
 843                 [MonoTODO ("There is no support for retrieving process information from a remote machine")]
 844                 public static Process[] GetProcesses(string machineName) {
 845                         if (machineName == null)
 846                                 throw new ArgumentNullException ("machineName");
 847
 848                         if (!IsLocalMachine (machineName))
 849                                 throw new NotImplementedException ();
 850
 851                         return GetProcesses ();
 852                 }
 853
 854                 public static Process[] GetProcessesByName(string processName)
 855                 {
 856                         int [] pids = GetProcesses_internal ();
 857                         if (pids == null)
 858                                 return new Process [0];
 859
 860                         var proclist = new List<Process> (pids.Length);
 861                         for (int i = 0; i < pids.Length; i++) {
 862                                 try {
 863                                         Process p = GetProcessById (pids [i]);
 864                                         if (String.Compare (processName, p.ProcessName, true) == 0)
 865                                                 proclist.Add (p);
 866                                 } catch (SystemException) {
 867                                         /* The process might exit
 868                                          * between
 869                                          * GetProcesses_internal and
 870                                          * GetProcessById
 871                                          */
 872                                 }
 873                         }
 874
 875                         return proclist.ToArray ();
 876                 }
 877
 878                 [MonoTODO]
 879                 public static Process[] GetProcessesByName(string processName, string machineName) {
 880                         throw new NotImplementedException();
 881                 }
 882
 883                 public void Kill ()
 884                 {
 885                         Close (1);
 886                 }
 887
 888                 [MonoTODO]
 889                 public static void LeaveDebugMode() {
 890                 }
 891
 892                 public void Refresh ()
 893                 {
 894                         // FIXME: should refresh any cached data we might have about
 895                         // the process (currently we have none).
 896                 }
 897
 898                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 899                 private extern static bool ShellExecuteEx_internal(ProcessStartInfo startInfo,
 900                                                                    ref ProcInfo proc_info);
 901
 902                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 903                 private extern static bool CreateProcess_internal(ProcessStartInfo startInfo,
 904                                                                   IntPtr stdin,
 905                                                                   IntPtr stdout,
 906                                                                   IntPtr stderr,
 907                                                                   ref ProcInfo proc_info);
 908
 909                 private static bool Start_shell (ProcessStartInfo startInfo, Process process)
 910                 {
 911                         ProcInfo proc_info=new ProcInfo();
 912                         bool ret;
 913
 914                         if (startInfo.RedirectStandardInput ||
 915                             startInfo.RedirectStandardOutput ||
 916                             startInfo.RedirectStandardError) {
 917                                 throw new InvalidOperationException ("UseShellExecute must be false when redirecting I/O.");
 918                         }
 919
 920                         if (startInfo.HaveEnvVars)
 921                                 throw new InvalidOperationException ("UseShellExecute must be false in order to use environment variables.");
 922
 923                         FillUserInfo (startInfo, ref proc_info);
 924                         try {
 925                                 ret = ShellExecuteEx_internal (startInfo,
 926                                                                ref proc_info);
 927                         } finally {
 928                                 if (proc_info.Password != IntPtr.Zero)
 929                                         Marshal.ZeroFreeBSTR (proc_info.Password);
 930                                 proc_info.Password = IntPtr.Zero;
 931                         }
 932                         if (!ret) {
 933                                 throw new Win32Exception (-proc_info.pid);
 934                         }
 935
 936                         process.process_handle = proc_info.process_handle;
 937                         process.pid = proc_info.pid;
 938                         process.StartBackgroundWaitForExit ();
 939                         return(ret);
 940                 }
 941
 942                 //
 943                 // Creates a pipe with read and write descriptors
 944                 //
 945                 static void CreatePipe (out IntPtr read, out IntPtr write, bool writeDirection)
 946                 {
 947                         MonoIOError error;
 948
 949                         //
 950                         // Creates read/write pipe from parent -> child perspective
 951                         // a child process uses same descriptors after fork. That's
 952                         // 4 descriptors in total where only 2. One in child, one in parent
 953                         // should be active and the other 2 closed. Which ones depends on
 954                         // comunication direction
 955                         //
 956                         // parent  -------->  child   (parent can write, child can read)
 957                         //
 958                         // read: closed       read: used
 959                         // write: used        write: closed
 960                         //
 961                         //
 962                         // parent  <--------  child   (parent can read, child can write)
 963                         //
 964                         // read: used         read: closed
 965                         // write: closed      write: used
 966                         //
 967                         // It can still be tricky for predefined descriptiors http://unixwiz.net/techtips/remap-pipe-fds.html
 968                         //
 969                         if (!MonoIO.CreatePipe (out read, out write, out error))
 970                                 throw MonoIO.GetException (error);
 971
 972                         if (IsWindows) {
 973                                 const int DUPLICATE_SAME_ACCESS = 0x00000002;
 974                                 var tmp = writeDirection ? write : read;
 975
 976                                 if (!MonoIO.DuplicateHandle (Process.GetCurrentProcess ().Handle, tmp, Process.GetCurrentProcess ().Handle, out tmp, 0, 0, DUPLICATE_SAME_ACCESS, out error))
 977                                         throw MonoIO.GetException (error);
 978
 979                                 if (writeDirection) {
 980                                         if (!MonoIO.Close (write, out error))
 981                                                 throw MonoIO.GetException (error);
 982                                         write = tmp;
 983                                 } else {
 984                                         if (!MonoIO.Close (read, out error))
 985                                                 throw MonoIO.GetException (error);
 986                                         read = tmp;
 987                                 }
 988                         }
 989                 }
 990
 991                 static bool Start_noshell (ProcessStartInfo startInfo, Process process)
 992                 {
 993                         var proc_info = new ProcInfo ();
 994
 995                         if (startInfo.HaveEnvVars) {
 996                                 string [] strs = new string [startInfo.EnvironmentVariables.Count];
 997                                 startInfo.EnvironmentVariables.Keys.CopyTo (strs, 0);
 998                                 proc_info.envKeys = strs;
 999
1000                                 strs = new string [startInfo.EnvironmentVariables.Count];
1001                                 startInfo.EnvironmentVariables.Values.CopyTo (strs, 0);
1002                                 proc_info.envValues = strs;
1003                         }
1004
1005                         MonoIOError error;
1006                         IntPtr stdin_read = IntPtr.Zero, stdin_write = IntPtr.Zero;
1007                         IntPtr stdout_read = IntPtr.Zero, stdout_write = IntPtr.Zero;
1008                         IntPtr stderr_read = IntPtr.Zero, stderr_write = IntPtr.Zero;
1009
1010                         try {
1011                                 if (startInfo.RedirectStandardInput) {
1012                                         CreatePipe (out stdin_read, out stdin_write, true);
1013                                 } else {
1014                                         stdin_read = MonoIO.ConsoleInput;
1015                                         stdin_write = IntPtr.Zero;
1016                                 }
1017
1018                                 if (startInfo.RedirectStandardOutput) {
1019                                         CreatePipe (out stdout_read, out stdout_write, false);
1020                                 } else {
1021                                         stdout_read = IntPtr.Zero;
1022                                         stdout_write = MonoIO.ConsoleOutput;
1023                                 }
1024
1025                                 if (startInfo.RedirectStandardError) {
1026                                         CreatePipe (out stderr_read, out stderr_write, false);
1027                                 } else {
1028                                         stderr_read = IntPtr.Zero;
1029                                         stderr_write = MonoIO.ConsoleError;
1030                                 }
1031
1032                                 FillUserInfo (startInfo, ref proc_info);
1033
1034                                 //
1035                                 // FIXME: For redirected pipes we need to send descriptors of
1036                                 // stdin_write, stdout_read, stderr_read to child process and
1037                                 // close them there (fork makes exact copy of parent's descriptors)
1038                                 //
1039                                 if (!CreateProcess_internal (startInfo, stdin_read, stdout_write, stderr_write, ref proc_info)) {
1040                                         throw new Win32Exception (-proc_info.pid,
1041                                         "ApplicationName='" + startInfo.FileName +
1042                                         "', CommandLine='" + startInfo.Arguments +
1043                                         "', CurrentDirectory='" + startInfo.WorkingDirectory +
1044                                         "', Native error= " + Win32Exception.W32ErrorMessage (-proc_info.pid));
1045                                 }
1046                         } catch {
1047                                 if (startInfo.RedirectStandardInput) {
1048                                         if (stdin_read != IntPtr.Zero)
1049                                                 MonoIO.Close (stdin_read, out error);
1050                                         if (stdin_write != IntPtr.Zero)
1051                                                 MonoIO.Close (stdin_write, out error);
1052                                 }
1053
1054                                 if (startInfo.RedirectStandardOutput) {
1055                                         if (stdout_read != IntPtr.Zero)
1056                                                 MonoIO.Close (stdout_read, out error);
1057                                         if (stdout_write != IntPtr.Zero)
1058                                                 MonoIO.Close (stdout_write, out error);
1059                                 }
1060
1061                                 if (startInfo.RedirectStandardError) {
1062                                         if (stderr_read != IntPtr.Zero)
1063                                                 MonoIO.Close (stderr_read, out error);
1064                                         if (stderr_write != IntPtr.Zero)
1065                                                 MonoIO.Close (stderr_write, out error);
1066                                 }
1067
1068                                 throw;
1069                         } finally {
1070                                 if (proc_info.Password != IntPtr.Zero) {
1071                                         Marshal.ZeroFreeBSTR (proc_info.Password);
1072                                         proc_info.Password = IntPtr.Zero;
1073                                 }
1074                         }
1075
1076                         process.process_handle = proc_info.process_handle;
1077                         process.pid = proc_info.pid;
1078
1079                         if (startInfo.RedirectStandardInput) {
1080                                 //
1081                                 // FIXME: The descriptor needs to be closed but due to wapi io-layer
1082                                 // not coping with duplicated descriptors any StandardInput write fails
1083                                 //
1084                                 // MonoIO.Close (stdin_read, out error);
1085
1086 #if MOBILE
1087                                 var stdinEncoding = Encoding.Default;
1088 #else
1089                                 var stdinEncoding = Console.InputEncoding;
1090 #endif
1091                                 process.input_stream = new StreamWriter (new FileStream (stdin_write, FileAccess.Write, true, 8192), stdinEncoding) {
1092                                         AutoFlush = true
1093                                 };
1094                         }
1095
1096                         if (startInfo.RedirectStandardOutput) {
1097                                 MonoIO.Close (stdout_write, out error);
1098
1099                                 Encoding stdoutEncoding = startInfo.StandardOutputEncoding ?? Console.Out.Encoding;
1100
1101                                 process.output_stream = new StreamReader (new FileStream (stdout_read, FileAccess.Read, true, 8192), stdoutEncoding, true);
1102                         }
1103
1104                         if (startInfo.RedirectStandardError) {
1105                                 MonoIO.Close (stderr_write, out error);
1106
1107                                 Encoding stderrEncoding = startInfo.StandardErrorEncoding ?? Console.Out.Encoding;
1108
1109                                 process.error_stream = new StreamReader (new FileStream (stderr_read, FileAccess.Read, true, 8192), stderrEncoding, true);
1110                         }
1111
1112                         process.StartBackgroundWaitForExit ();
1113
1114                         return true;
1115                 }
1116
1117                 // Note that ProcInfo.Password must be freed.
1118                 private static void FillUserInfo (ProcessStartInfo startInfo, ref ProcInfo proc_info)
1119                 {
1120                         if (startInfo.UserName.Length != 0) {
1121                                 proc_info.UserName = startInfo.UserName;
1122                                 proc_info.Domain = startInfo.Domain;
1123                                 if (startInfo.Password != null)
1124                                         proc_info.Password = Marshal.SecureStringToBSTR (startInfo.Password);
1125                                 else
1126                                         proc_info.Password = IntPtr.Zero;
1127                                 proc_info.LoadUserProfile = startInfo.LoadUserProfile;
1128                         }
1129                 }
1130
1131                 private static bool Start_common (ProcessStartInfo startInfo,
1132                                                   Process process)
1133                 {
1134                         if (startInfo.FileName.Length == 0)
1135                                 throw new InvalidOperationException("File name has not been set");
1136
1137                         if (startInfo.StandardErrorEncoding != null && !startInfo.RedirectStandardError)
1138                                 throw new InvalidOperationException ("StandardErrorEncoding is only supported when standard error is redirected");
1139                         if (startInfo.StandardOutputEncoding != null && !startInfo.RedirectStandardOutput)
1140                                 throw new InvalidOperationException ("StandardOutputEncoding is only supported when standard output is redirected");
1141
1142                         if (startInfo.UseShellExecute) {
1143                                 if (startInfo.UserName.Length != 0)
1144                                         throw new InvalidOperationException ("UseShellExecute must be false if an explicit UserName is specified when starting a process");
1145                                 return (Start_shell (startInfo, process));
1146                         } else {
1147                                 return (Start_noshell (startInfo, process));
1148                         }
1149                 }
1150
1151                 public bool Start ()
1152                 {
1153                         if (process_handle != IntPtr.Zero) {
1154                                 Process_free_internal (process_handle);
1155                                 process_handle = IntPtr.Zero;
1156                         }
1157                         return Start_common(start_info, this);
1158                 }
1159
1160                 public static Process Start (ProcessStartInfo startInfo)
1161                 {
1162                         if (startInfo == null)
1163                                 throw new ArgumentNullException ("startInfo");
1164
1165                         Process process = new Process();
1166                         process.StartInfo = startInfo;
1167                         if (Start_common(startInfo, process) && process.process_handle != IntPtr.Zero)
1168                                 return process;
1169                         return null;
1170                 }
1171
1172                 public static Process Start (string fileName)
1173                 {
1174                         return Start (new ProcessStartInfo (fileName));
1175                 }
1176
1177                 public static Process Start(string fileName, string arguments)
1178                 {
1179                         return Start (new ProcessStartInfo (fileName, arguments));
1180                 }
1181
1182                 public static Process Start(string fileName, string username, SecureString password, string domain) {
1183                         return Start(fileName, null, username, password, domain);
1184                 }
1185
1186                 public static Process Start(string fileName, string arguments, string username, SecureString password, string domain) {
1187                         ProcessStartInfo psi = new ProcessStartInfo(fileName, arguments);
1188                         psi.UserName = username;
1189                         psi.Password = password;
1190                         psi.Domain = domain;
1191                         psi.UseShellExecute = false;
1192                         return Start(psi);
1193                 }
1194
1195                 public override string ToString()
1196                 {
1197                         return(base.ToString() + " (" + this.ProcessName + ")");
1198                 }
1199
1200                 /* Waits up to ms milliseconds for process 'handle' to
1201                  * exit.  ms can be <0 to mean wait forever.
1202                  */
1203                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1204                 private extern bool WaitForExit_internal(IntPtr handle, int ms);
1205
1206                 public void WaitForExit ()
1207                 {
1208                         WaitForExit (-1);
1209                 }
1210
1211                 public bool WaitForExit(int milliseconds) {
1212                         int ms = milliseconds;
1213                         if (ms == int.MaxValue)
1214                                 ms = -1;
1215
1216                         if (process_handle == IntPtr.Zero)
1217                                 throw new InvalidOperationException ("No process is associated with this object.");
1218
1219                         if (!WaitForExit_internal (process_handle, ms))
1220                                 return false;
1221
1222                         if (async_output != null && !async_output.IsCompleted)
1223                                 async_output.AsyncWaitHandle.WaitOne ();
1224
1225                         if (async_error != null && !async_error.IsCompleted)
1226                                 async_error.AsyncWaitHandle.WaitOne ();
1227
1228                         OnExited ();
1229
1230                         return true;
1231                 }
1232
1233                 /* Waits up to ms milliseconds for process 'handle' to
1234                  * wait for input.  ms can be <0 to mean wait forever.
1235                  */
1236                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1237                 private extern bool WaitForInputIdle_internal(IntPtr handle, int ms);
1238
1239                 // The internal call is only implemented properly on Windows.
1240                 [MonoTODO]
1241                 public bool WaitForInputIdle() {
1242                         return WaitForInputIdle (-1);
1243                 }
1244
1245                 // The internal call is only implemented properly on Windows.
1246                 [MonoTODO]
1247                 public bool WaitForInputIdle(int milliseconds) {
1248                         return WaitForInputIdle_internal (process_handle, milliseconds);
1249                 }
1250
1251                 private static bool IsLocalMachine (string machineName)
1252                 {
1253                         if (machineName == "." || machineName.Length == 0)
1254                                 return true;
1255
1256                         return (string.Compare (machineName, Environment.MachineName, true) == 0);
1257                 }
1258
1259                 [Browsable (true)]
1260                 [MonitoringDescription ("Raised when it receives output data")]
1261                 public event DataReceivedEventHandler OutputDataReceived;
1262                 [Browsable (true)]
1263                 [MonitoringDescription ("Raised when it receives error data")]
1264                 public event DataReceivedEventHandler ErrorDataReceived;
1265
1266                 void OnOutputDataReceived (string str)
1267                 {
1268                         DataReceivedEventHandler cb = OutputDataReceived;
1269                         if (cb != null)
1270                                 cb (this, new DataReceivedEventArgs (str));
1271                 }
1272
1273                 void OnErrorDataReceived (string str)
1274                 {
1275                         DataReceivedEventHandler cb = ErrorDataReceived;
1276                         if (cb != null)
1277                                 cb (this, new DataReceivedEventArgs (str));
1278                 }
1279
1280                 [Flags]
1281                 enum AsyncModes {
1282                         NoneYet = 0,
1283                         SyncOutput = 1,
1284                         SyncError = 1 << 1,
1285                         AsyncOutput = 1 << 2,
1286                         AsyncError = 1 << 3
1287                 }
1288
1289                 [StructLayout (LayoutKind.Sequential)]
1290                 sealed class ProcessAsyncReader : IOAsyncResult
1291                 {
1292                         Process process;
1293                         IntPtr handle;
1294                         Stream stream;
1295                         bool err_out;
1296
1297                         StringBuilder sb = new StringBuilder ();
1298                         byte[] buffer = new byte [4096];
1299
1300                         const int ERROR_INVALID_HANDLE = 6;
1301
1302                         public ProcessAsyncReader (Process process, FileStream stream, bool err_out)
1303                                 : base (null, null)
1304                         {
1305                                 this.process = process;
1306                                 this.handle = stream.SafeFileHandle.DangerousGetHandle ();
1307                                 this.stream = stream;
1308                                 this.err_out = err_out;
1309                         }
1310
1311                         public void BeginReadLine ()
1312                         {
1313                                 IOSelector.Add (this.handle, new IOSelectorJob (IOOperation.Read, _ => Read (), null));
1314                         }
1315
1316                         void Read ()
1317                         {
1318                                 int nread = 0;
1319
1320                                 try {
1321                                         nread = stream.Read (buffer, 0, buffer.Length);
1322                                 } catch (ObjectDisposedException) {
1323                                 } catch (IOException ex) {
1324                                         if (ex.HResult != (unchecked((int) 0x80070000) | (int) ERROR_INVALID_HANDLE))
1325                                                 throw;
1326                                 } catch (NotSupportedException) {
1327                                         if (stream.CanRead)
1328                                                 throw;
1329                                 }
1330
1331                                 if (nread == 0) {
1332                                         Flush (true);
1333
1334                                         if (err_out)
1335                                                 process.OnOutputDataReceived (null);
1336                                         else
1337                                                 process.OnErrorDataReceived (null);
1338
1339                                         IsCompleted = true;
1340
1341                                         return;
1342                                 }
1343
1344                                 try {
1345                                         sb.Append (Encoding.Default.GetString (buffer, 0, nread));
1346                                 } catch {
1347                                         // Just in case the encoding fails...
1348                                         for (int i = 0; i < nread; i++) {
1349                                                 sb.Append ((char) buffer [i]);
1350                                         }
1351                                 }
1352
1353                                 Flush (false);
1354
1355                                 IOSelector.Add (this.handle, new IOSelectorJob (IOOperation.Read, _ => Read (), null));
1356                         }
1357
1358                         void Flush (bool last)
1359                         {
1360                                 if (sb.Length == 0 || (err_out && process.output_canceled) || (!err_out && process.error_canceled))
1361                                         return;
1362
1363                                 string[] strs = sb.ToString ().Split ('\n');
1364
1365                                 sb.Length = 0;
1366
1367                                 if (strs.Length == 0)
1368                                         return;
1369
1370                                 for (int i = 0; i < strs.Length - 1; i++) {
1371                                         if (err_out)
1372                                                 process.OnOutputDataReceived (strs [i]);
1373                                         else
1374                                                 process.OnErrorDataReceived (strs [i]);
1375                                 }
1376
1377                                 string end = strs [strs.Length - 1];
1378                                 if (last || (strs.Length == 1 && end == "")) {
1379                                         if (err_out)
1380                                                 process.OnOutputDataReceived (end);
1381                                         else
1382                                                 process.OnErrorDataReceived (end);
1383                                 } else {
1384                                         sb.Append (end);
1385                                 }
1386                         }
1387
1388                         public void Close ()
1389                         {
1390                                 IOSelector.Remove (handle);
1391                         }
1392
1393                         internal override void CompleteDisposed ()
1394                         {
1395                                 throw new NotSupportedException ();
1396                         }
1397                 }
1398
1399                 AsyncModes async_mode;
1400                 bool output_canceled;
1401                 bool error_canceled;
1402                 ProcessAsyncReader async_output;
1403                 ProcessAsyncReader async_error;
1404
1405                 [ComVisibleAttribute(false)]
1406                 public void BeginOutputReadLine ()
1407                 {
1408                         if (process_handle == IntPtr.Zero || output_stream == null || StartInfo.RedirectStandardOutput == false)
1409                                 throw new InvalidOperationException ("Standard output has not been redirected or process has not been started.");
1410
1411                         if ((async_mode & AsyncModes.SyncOutput) != 0)
1412                                 throw new InvalidOperationException ("Cannot mix asynchronous and synchonous reads.");
1413
1414                         async_mode |= AsyncModes.AsyncOutput;
1415                         output_canceled = false;
1416                         if (async_output == null) {
1417                                 async_output = new ProcessAsyncReader (this, (FileStream) output_stream.BaseStream, true);
1418                                 async_output.BeginReadLine ();
1419                         }
1420                 }
1421
1422                 [ComVisibleAttribute(false)]
1423                 public void CancelOutputRead ()
1424                 {
1425                         if (process_handle == IntPtr.Zero || output_stream == null || StartInfo.RedirectStandardOutput == false)
1426                                 throw new InvalidOperationException ("Standard output has not been redirected or process has not been started.");
1427
1428                         if ((async_mode & AsyncModes.SyncOutput) != 0)
1429                                 throw new InvalidOperationException ("OutputStream is not enabled for asynchronous read operations.");
1430
1431                         if (async_output == null)
1432                                 throw new InvalidOperationException ("No async operation in progress.");
1433
1434                         output_canceled = true;
1435                 }
1436
1437                 [ComVisibleAttribute(false)]
1438                 public void BeginErrorReadLine ()
1439                 {
1440                         if (process_handle == IntPtr.Zero || error_stream == null || StartInfo.RedirectStandardError == false)
1441                                 throw new InvalidOperationException ("Standard error has not been redirected or process has not been started.");
1442
1443                         if ((async_mode & AsyncModes.SyncError) != 0)
1444                                 throw new InvalidOperationException ("Cannot mix asynchronous and synchonous reads.");
1445
1446                         async_mode |= AsyncModes.AsyncError;
1447                         error_canceled = false;
1448                         if (async_error == null) {
1449                                 async_error = new ProcessAsyncReader (this, (FileStream) error_stream.BaseStream, false);
1450                                 async_error.BeginReadLine ();
1451                         }
1452                 }
1453
1454                 [ComVisibleAttribute(false)]
1455                 public void CancelErrorRead ()
1456                 {
1457                         if (process_handle == IntPtr.Zero || error_stream == null || StartInfo.RedirectStandardError == false)
1458                                 throw new InvalidOperationException ("Standard error has not been redirected or process has not been started.");
1459
1460                         if ((async_mode & AsyncModes.SyncOutput) != 0)
1461                                 throw new InvalidOperationException ("OutputStream is not enabled for asynchronous read operations.");
1462
1463                         if (async_error == null)
1464                                 throw new InvalidOperationException ("No async operation in progress.");
1465
1466                         error_canceled = true;
1467                 }
1468
1469                 [Category ("Behavior")]
1470                 [MonitoringDescription ("Raised when this process exits.")]
1471                 public event EventHandler Exited {
1472                         add {
1473                                 if (process_handle != IntPtr.Zero && HasExited) {
1474                                         value.BeginInvoke (null, null, null, null);
1475                                 } else {
1476                                         exited_event += value;
1477                                         if (exited_event != null)
1478                                                 StartBackgroundWaitForExit ();
1479                                 }
1480                         }
1481                         remove {
1482                                 exited_event -= value;
1483                         }
1484                 }
1485
1486                 // Closes the system process handle
1487                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1488                 private extern void Process_free_internal(IntPtr handle);
1489
1490                 int disposed;
1491
1492                 protected override void Dispose(bool disposing) {
1493                         // Check to see if Dispose has already been called.
1494                         if (disposed != 0 || Interlocked.CompareExchange (ref disposed, 1, 0) != 0)
1495                                 return;
1496
1497                         // If this is a call to Dispose,
1498                         // dispose all managed resources.
1499                         if (disposing) {
1500                                 /* These have open FileStreams on the pipes we are about to close */
1501                                 if (async_output != null)
1502                                         async_output.Close ();
1503                                 if (async_error != null)
1504                                         async_error.Close ();
1505
1506                                 if (input_stream != null) {
1507                                         if (!input_stream_exposed)
1508                                                 input_stream.Close ();
1509                                         input_stream = null;
1510                                 }
1511                                 if (output_stream != null) {
1512                                         if (!output_stream_exposed)
1513                                                 output_stream.Close ();
1514                                         output_stream = null;
1515                                 }
1516                                 if (error_stream != null) {
1517                                         if (!error_stream_exposed)
1518                                                 error_stream.Close ();
1519                                         error_stream = null;
1520                                 }
1521                         }
1522
1523                         // Release unmanaged resources
1524
1525                         if (process_handle!=IntPtr.Zero) {
1526                                 Process_free_internal (process_handle);
1527                                 process_handle = IntPtr.Zero;
1528                         }
1529
1530                         base.Dispose (disposing);
1531                 }
1532
1533                 ~Process ()
1534                 {
1535                         Dispose (false);
1536                 }
1537
1538                 int on_exited_called = 0;
1539
1540                 protected void OnExited()
1541                 {
1542                         if (on_exited_called != 0 || Interlocked.CompareExchange (ref on_exited_called, 1, 0) != 0)
1543                                 return;
1544
1545                         var cb = exited_event;
1546                         if (cb == null)
1547                                 return;
1548
1549                         if (synchronizingObject != null) {
1550                                 synchronizingObject.BeginInvoke (cb, new object [] { this, EventArgs.Empty });
1551                         } else {
1552                                 foreach (EventHandler d in cb.GetInvocationList ()) {
1553                                         try {
1554                                                 d (this, EventArgs.Empty);
1555                                         } catch {
1556                                         }
1557                                 }
1558                         }
1559                 }
1560
1561                 static bool IsWindows
1562                 {
1563                         get
1564                         {
1565                                 PlatformID platform = Environment.OSVersion.Platform;
1566                                 if (platform == PlatformID.Win32S ||
1567                                         platform == PlatformID.Win32Windows ||
1568                                         platform == PlatformID.Win32NT ||
1569                                         platform == PlatformID.WinCE) {
1570                                         return true;
1571                                 }
1572                                 return false;
1573                         }
1574                 }
1575
1576                 void StartBackgroundWaitForExit ()
1577                 {
1578                         if (enable_raising_events == 0)
1579                                 return;
1580                         if (exited_event == null)
1581                                 return;
1582                         if (process_handle == IntPtr.Zero)
1583                                 return;
1584                         if (background_wait_for_exit_thread != null)
1585                                 return;
1586
1587                         Thread t = new Thread (_ => WaitForExit ()) { IsBackground = true };
1588
1589                         if (Interlocked.CompareExchange (ref background_wait_for_exit_thread, t, null) == null)
1590                                 t.Start ();
1591                 }
1592
1593                 class ProcessWaitHandle : WaitHandle
1594                 {
1595                         [MethodImplAttribute (MethodImplOptions.InternalCall)]
1596                         private extern static IntPtr ProcessHandle_duplicate (IntPtr handle);
1597
1598                         public ProcessWaitHandle (IntPtr handle)
1599                         {
1600                                 // Need to keep a reference to this handle,
1601                                 // in case the Process object is collected
1602                                 Handle = ProcessHandle_duplicate (handle);
1603
1604                                 // When the wait handle is disposed, the duplicated handle will be
1605                                 // closed, so no need to override dispose (bug #464628).
1606                         }
1607                 }
1608         }
1609 }
1610