mcs/class/Mono.Posix/Mono.Unix/UnixProcess.cs

   1 //
   2 // Mono.Unix/UnixProcess.cs
   3 //
   4 // Authors:
   5 //   Jonathan Pryor (jonpryor@vt.edu)
   6 //
   7 // (C) 2004 Jonathan Pryor
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using Mono.Unix;
  31
  32 namespace Mono.Unix {
  33
  34         public sealed class UnixProcess
  35         {
  36                 private int pid;
  37
  38                 internal UnixProcess (int pid)
  39                 {
  40                         this.pid = pid;
  41                 }
  42
  43                 public int Id {
  44                         get {return pid;}
  45                 }
  46
  47                 public bool HasExited {
  48                         get {
  49                                 int status = GetProcessStatus ();
  50                                 return Syscall.WIFEXITED (status);
  51                         }
  52                 }
  53
  54                 private int GetProcessStatus ()
  55                 {
  56                         int status;
  57                         int r = Syscall.waitpid (pid, out status,
  58                                         WaitOptions.WNOHANG | WaitOptions.WUNTRACED);
  59                         UnixMarshal.ThrowExceptionForLastErrorIf (r);
  60                         return r;
  61                 }
  62
  63                 public int ExitCode {
  64                         get {
  65                                 if (!HasExited)
  66                                         throw new InvalidOperationException (
  67                                                         Locale.GetText ("Process hasn't exited"));
  68                                 int status = GetProcessStatus ();
  69                                 return Syscall.WEXITSTATUS (status);
  70                         }
  71                 }
  72
  73                 public bool HasSignaled {
  74                         get {
  75                                 int status = GetProcessStatus ();
  76                                 return Syscall.WIFSIGNALED (status);
  77                         }
  78                 }
  79
  80                 [CLSCompliant (false)]
  81                 [Obsolete ("The type of this property will change in the next release.")]
  82                 public Signum TerminationSignal {
  83                         get {
  84                                 if (!HasSignaled)
  85                                         throw new InvalidOperationException (
  86                                                         Locale.GetText ("Process wasn't terminated by a signal"));
  87                                 int status = GetProcessStatus ();
  88                                 return Syscall.WTERMSIG (status);
  89                         }
  90                 }
  91
  92                 public bool HasStopped {
  93                         get {
  94                                 int status = GetProcessStatus ();
  95                                 return Syscall.WIFSTOPPED (status);
  96                         }
  97                 }
  98
  99                 [CLSCompliant (false)]
 100                 [Obsolete ("The type of this property will change in the next release.")]
 101                 public Signum StopSignal {
 102                         get {
 103                                 if (!HasStopped)
 104                                         throw new InvalidOperationException (
 105                                                         Locale.GetText ("Process isn't stopped"));
 106                                 int status = GetProcessStatus ();
 107                                 return Syscall.WSTOPSIG (status);
 108                         }
 109                 }
 110
 111                 public int ProcessGroupId {
 112                         get {return Syscall.getpgid (pid);}
 113                         set {
 114                                 int r = Syscall.setpgid (pid, value);
 115                                 UnixMarshal.ThrowExceptionForLastErrorIf (r);
 116                         }
 117                 }
 118
 119                 public int SessionId {
 120                         get {
 121                                 int r = Syscall.getsid (pid);
 122                                 UnixMarshal.ThrowExceptionForLastErrorIf (r);
 123                                 return r;
 124                         }
 125                 }
 126
 127                 public static UnixProcess GetCurrentProcess ()
 128                 {
 129                         return new UnixProcess (GetCurrentProcessId ());
 130                 }
 131
 132                 public static int GetCurrentProcessId ()
 133                 {
 134                         return Syscall.getpid ();
 135                 }
 136
 137                 public void Kill ()
 138                 {
 139                         Signal (Signum.SIGKILL);
 140                 }
 141
 142                 [CLSCompliant (false)]
 143                 [Obsolete ("Use Signal (Mono.Unix.Native.Signum)")]
 144                 public void Signal (Signum signal)
 145                 {
 146                         int r = Syscall.kill (pid, signal);
 147                         UnixMarshal.ThrowExceptionForLastErrorIf (r);
 148                 }
 149
 150                 [CLSCompliant (false)]
 151                 public void Signal (Native.Signum signal)
 152                 {
 153                         int r = Native.Syscall.kill (pid, signal);
 154                         UnixMarshal.ThrowExceptionForLastErrorIf (r);
 155                 }
 156
 157                 public void WaitForExit ()
 158                 {
 159                         int status;
 160                         int r;
 161                         do {
 162                                 r = Syscall.waitpid (pid, out status, (WaitOptions) 0);
 163                         } while (UnixMarshal.ShouldRetrySyscall (r));
 164                         UnixMarshal.ThrowExceptionForLastErrorIf (r);
 165                 }
 166         }
 167 }
 168
 169 // vim: noexpandtab