mono/io-layer/wapi-private.h

   1 /*
   2  * wapi-private.h:  internal definitions of handles and shared memory layout
   3  *
   4  * Author:
   5  *      Dick Porter (dick@ximian.com)
   6  *
   7  * (C) 2002-2006 Novell, Inc.
   8  */
   9
  10 #ifndef _WAPI_PRIVATE_H_
  11 #define _WAPI_PRIVATE_H_
  12
  13 #include <config.h>
  14 #include <glib.h>
  15 #include <sys/stat.h>
  16
  17 #include <mono/io-layer/wapi.h>
  18 #include <mono/io-layer/handles.h>
  19 #include <mono/io-layer/io.h>
  20
  21 #include <mono/utils/mono-os-mutex.h>
  22
  23 extern gboolean _wapi_has_shut_down;
  24
  25 typedef enum {
  26         WAPI_HANDLE_UNUSED=0,
  27         WAPI_HANDLE_FILE,
  28         WAPI_HANDLE_CONSOLE,
  29         WAPI_HANDLE_THREAD,
  30         WAPI_HANDLE_SEM,
  31         WAPI_HANDLE_MUTEX,
  32         WAPI_HANDLE_EVENT,
  33         WAPI_HANDLE_SOCKET,
  34         WAPI_HANDLE_FIND,
  35         WAPI_HANDLE_PROCESS,
  36         WAPI_HANDLE_PIPE,
  37         WAPI_HANDLE_NAMEDMUTEX,
  38         WAPI_HANDLE_NAMEDSEM,
  39         WAPI_HANDLE_NAMEDEVENT,
  40         WAPI_HANDLE_COUNT
  41 } WapiHandleType;
  42
  43 extern const char *_wapi_handle_typename[];
  44
  45 #define _WAPI_FD_HANDLE(type) (type == WAPI_HANDLE_FILE || \
  46                                type == WAPI_HANDLE_CONSOLE || \
  47                                type == WAPI_HANDLE_SOCKET || \
  48                                type == WAPI_HANDLE_PIPE)
  49
  50 #define _WAPI_SHARED_NAMESPACE(type) (type == WAPI_HANDLE_NAMEDMUTEX || \
  51                                       type == WAPI_HANDLE_NAMEDSEM || \
  52                                       type == WAPI_HANDLE_NAMEDEVENT)
  53
  54 typedef struct
  55 {
  56         gchar name[MAX_PATH + 1];
  57 } WapiSharedNamespace;
  58
  59 typedef enum {
  60         WAPI_HANDLE_CAP_WAIT=0x01,
  61         WAPI_HANDLE_CAP_SIGNAL=0x02,
  62         WAPI_HANDLE_CAP_OWN=0x04,
  63         WAPI_HANDLE_CAP_SPECIAL_WAIT=0x08
  64 } WapiHandleCapability;
  65
  66 struct _WapiHandleOps
  67 {
  68         void (*close)(gpointer handle, gpointer data);
  69
  70         /* SignalObjectAndWait */
  71         void (*signal)(gpointer signal);
  72
  73         /* Called by WaitForSingleObject and WaitForMultipleObjects,
  74          * with the handle locked (shared handles aren't locked.)
  75          * Returns TRUE if ownership was established, false otherwise.
  76          */
  77         gboolean (*own_handle)(gpointer handle);
  78
  79         /* Called by WaitForSingleObject and WaitForMultipleObjects, if the
  80          * handle in question is "ownable" (ie mutexes), to see if the current
  81          * thread already owns this handle
  82          */
  83         gboolean (*is_owned)(gpointer handle);
  84
  85         /* Called by WaitForSingleObject and WaitForMultipleObjects,
  86          * if the handle in question needs a special wait function
  87          * instead of using the normal handle signal mechanism.
  88          * Returns the WaitForSingleObject return code.
  89          */
  90         guint32 (*special_wait)(gpointer handle, guint32 timeout, gboolean alertable);
  91
  92         /* Called by WaitForSingleObject and WaitForMultipleObjects,
  93          * if the handle in question needs some preprocessing before the
  94          * signal wait.
  95          */
  96         void (*prewait)(gpointer handle);
  97
  98         /* Called when dumping the handles */
  99         void (*details)(gpointer data);
 100 };
 101
 102 #include <mono/io-layer/event-private.h>
 103 #include <mono/io-layer/io-private.h>
 104 #include <mono/io-layer/mutex-private.h>
 105 #include <mono/io-layer/semaphore-private.h>
 106 #include <mono/io-layer/socket-private.h>
 107 #include <mono/io-layer/thread-private.h>
 108 #include <mono/io-layer/process-private.h>
 109
 110 struct _WapiHandle_shared_ref
 111 {
 112         /* This will be split 16:16 with the shared file segment in
 113          * the top half, when I implement space increases
 114          */
 115         guint32 offset;
 116 };
 117
 118 #define _WAPI_SHARED_SEM_NAMESPACE 0
 119 /*#define _WAPI_SHARED_SEM_COLLECTION 1*/
 120 #define _WAPI_SHARED_SEM_FILESHARE 2
 121 #define _WAPI_SHARED_SEM_PROCESS_COUNT_LOCK 6
 122 #define _WAPI_SHARED_SEM_PROCESS_COUNT 7
 123 #define _WAPI_SHARED_SEM_COUNT 8        /* Leave some future expansion space */
 124
 125 struct _WapiFileShare
 126 {
 127 #ifdef WAPI_FILE_SHARE_PLATFORM_EXTRA_DATA
 128         WAPI_FILE_SHARE_PLATFORM_EXTRA_DATA
 129 #endif
 130         guint64 device;
 131         guint64 inode;
 132         pid_t opened_by_pid;
 133         guint32 sharemode;
 134         guint32 access;
 135         guint32 handle_refs;
 136         guint32 timestamp;
 137 };
 138
 139 typedef struct _WapiFileShare _WapiFileShare;
 140
 141 #define _WAPI_HANDLE_INVALID (gpointer)-1
 142
 143 pid_t
 144 _wapi_getpid (void);
 145
 146 #endif /* _WAPI_PRIVATE_H_ */