mono/metadata/w32handle.h

   1 /**
   2  * \file
   3  */
   4
   5 #ifndef _MONO_METADATA_W32HANDLE_H_
   6 #define _MONO_METADATA_W32HANDLE_H_
   7
   8 #include <config.h>
   9 #include <glib.h>
  10
  11 #ifdef HOST_WIN32
  12 #include <windows.h>
  13 #endif
  14
  15 #ifndef INVALID_HANDLE_VALUE
  16 #define INVALID_HANDLE_VALUE (gpointer)-1
  17 #endif
  18
  19 #define MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS 64
  20
  21 #ifndef MONO_INFINITE_WAIT
  22 #define MONO_INFINITE_WAIT ((guint32) 0xFFFFFFFF)
  23 #endif
  24
  25 typedef enum {
  26         MONO_W32HANDLE_UNUSED = 0,
  27         MONO_W32HANDLE_FILE,
  28         MONO_W32HANDLE_CONSOLE,
  29         MONO_W32HANDLE_THREAD,
  30         MONO_W32HANDLE_SEM,
  31         MONO_W32HANDLE_MUTEX,
  32         MONO_W32HANDLE_EVENT,
  33         MONO_W32HANDLE_SOCKET,
  34         MONO_W32HANDLE_FIND,
  35         MONO_W32HANDLE_PROCESS,
  36         MONO_W32HANDLE_PIPE,
  37         MONO_W32HANDLE_NAMEDMUTEX,
  38         MONO_W32HANDLE_NAMEDSEM,
  39         MONO_W32HANDLE_NAMEDEVENT,
  40         MONO_W32HANDLE_COUNT
  41 } MonoW32HandleType;
  42
  43 typedef enum {
  44         MONO_W32HANDLE_WAIT_RET_SUCCESS_0   =  0,
  45         MONO_W32HANDLE_WAIT_RET_ABANDONED_0 =  MONO_W32HANDLE_WAIT_RET_SUCCESS_0 + MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS,
  46         MONO_W32HANDLE_WAIT_RET_ALERTED     = -1,
  47         MONO_W32HANDLE_WAIT_RET_TIMEOUT     = -2,
  48         MONO_W32HANDLE_WAIT_RET_FAILED      = -3,
  49 } MonoW32HandleWaitRet;
  50
  51 typedef struct
  52 {
  53         void (*close)(gpointer handle, gpointer data);
  54
  55         /* mono_w32handle_signal_and_wait */
  56         void (*signal)(gpointer signal, gpointer data);
  57
  58         /* Called by mono_w32handle_wait_one and mono_w32handle_wait_multiple,
  59          * with the handle locked (shared handles aren't locked.)
  60          * Returns TRUE if ownership was established, false otherwise.
  61          * If TRUE, *abandoned contains a status code such as
  62          * WAIT_OBJECT_0 or WAIT_ABANDONED_0.
  63          */
  64         gboolean (*own_handle)(gpointer handle, gboolean *abandoned);
  65
  66         /* Called by mono_w32handle_wait_one and mono_w32handle_wait_multiple, if the
  67          * handle in question is "ownable" (ie mutexes), to see if the current
  68          * thread already owns this handle
  69          */
  70         gboolean (*is_owned)(gpointer handle);
  71
  72         /* Called by mono_w32handle_wait_one and mono_w32handle_wait_multiple,
  73          * if the handle in question needs a special wait function
  74          * instead of using the normal handle signal mechanism.
  75          * Returns the mono_w32handle_wait_one return code.
  76          */
  77         MonoW32HandleWaitRet (*special_wait)(gpointer handle, guint32 timeout, gboolean *alerted);
  78
  79         /* Called by mono_w32handle_wait_one and mono_w32handle_wait_multiple,
  80          * if the handle in question needs some preprocessing before the
  81          * signal wait.
  82          */
  83         void (*prewait)(gpointer handle);
  84
  85         /* Called when dumping the handles */
  86         void (*details)(gpointer data);
  87
  88         /* Called to get the name of the handle type */
  89         const gchar* (*typename) (void);
  90
  91         /* Called to get the size of the handle type */
  92         gsize (*typesize) (void);
  93 } MonoW32HandleOps;
  94
  95 typedef enum {
  96         MONO_W32HANDLE_CAP_WAIT         = 0x01,
  97         MONO_W32HANDLE_CAP_SIGNAL       = 0x02,
  98         MONO_W32HANDLE_CAP_OWN          = 0x04,
  99         MONO_W32HANDLE_CAP_SPECIAL_WAIT = 0x08,
 100 } MonoW32HandleCapability;
 101
 102 extern guint32 mono_w32handle_fd_reserve;
 103
 104 void
 105 mono_w32handle_init (void);
 106
 107 void
 108 mono_w32handle_cleanup (void);
 109
 110 void
 111 mono_w32handle_register_ops (MonoW32HandleType type, MonoW32HandleOps *ops);
 112
 113 gpointer
 114 mono_w32handle_new (MonoW32HandleType type, gpointer handle_specific);
 115
 116 gpointer
 117 mono_w32handle_new_fd (MonoW32HandleType type, int fd, gpointer handle_specific);
 118
 119 gpointer
 120 mono_w32handle_duplicate (gpointer handle);
 121
 122 gboolean
 123 mono_w32handle_close (gpointer handle);
 124
 125 MonoW32HandleType
 126 mono_w32handle_get_type (gpointer handle);
 127
 128 const gchar*
 129 mono_w32handle_get_typename (MonoW32HandleType type);
 130
 131 gboolean
 132 mono_w32handle_lookup (gpointer handle, MonoW32HandleType type, gpointer *handle_specific);
 133
 134 void
 135 mono_w32handle_foreach (gboolean (*on_each)(gpointer handle, gpointer data, gpointer user_data), gpointer user_data);
 136
 137 void
 138 mono_w32handle_dump (void);
 139
 140 void
 141 mono_w32handle_register_capabilities (MonoW32HandleType type, MonoW32HandleCapability caps);
 142
 143 gboolean
 144 mono_w32handle_test_capabilities (gpointer handle, MonoW32HandleCapability caps);
 145
 146 void
 147 mono_w32handle_force_close (gpointer handle, gpointer data);
 148
 149 void
 150 mono_w32handle_set_signal_state (gpointer handle, gboolean state, gboolean broadcast);
 151
 152 gboolean
 153 mono_w32handle_issignalled (gpointer handle);
 154
 155 void
 156 mono_w32handle_lock_handle (gpointer handle);
 157
 158 gboolean
 159 mono_w32handle_trylock_handle (gpointer handle);
 160
 161 void
 162 mono_w32handle_unlock_handle (gpointer handle);
 163
 164 MonoW32HandleWaitRet
 165 mono_w32handle_wait_one (gpointer handle, guint32 timeout, gboolean alertable);
 166
 167 MonoW32HandleWaitRet
 168 mono_w32handle_wait_multiple (gpointer *handles, gsize nhandles, gboolean waitall, guint32 timeout, gboolean alertable);
 169
 170 MonoW32HandleWaitRet
 171 mono_w32handle_signal_and_wait (gpointer signal_handle, gpointer wait_handle, guint32 timeout, gboolean alertable);
 172
 173 #ifdef HOST_WIN32
 174 static inline MonoW32HandleWaitRet
 175 mono_w32handle_convert_wait_ret (guint32 res, guint32 numobjects)
 176 {
 177         if (res >= WAIT_OBJECT_0 && res <= WAIT_OBJECT_0 + numobjects - 1)
 178                 return MONO_W32HANDLE_WAIT_RET_SUCCESS_0 + (res - WAIT_OBJECT_0);
 179         else if (res >= WAIT_ABANDONED_0 && res <= WAIT_ABANDONED_0 + numobjects - 1)
 180                 return MONO_W32HANDLE_WAIT_RET_ABANDONED_0 + (res - WAIT_ABANDONED_0);
 181         else if (res == WAIT_IO_COMPLETION)
 182                 return MONO_W32HANDLE_WAIT_RET_ALERTED;
 183         else if (res == WAIT_TIMEOUT)
 184                 return MONO_W32HANDLE_WAIT_RET_TIMEOUT;
 185         else if (res == WAIT_FAILED)
 186                 return MONO_W32HANDLE_WAIT_RET_FAILED;
 187         else
 188                 g_error ("%s: unknown res value %d", __func__, res);
 189 }
 190 #endif
 191
 192
 193 #endif /* _MONO_METADATA_W32HANDLE_H_ */