mono/io-layer/critical-sections.h

   1 /*
   2  * critical-sections.h:  Critical sections
   3  *
   4  * Author:
   5  *      Dick Porter (dick@ximian.com)
   6  *
   7  * (C) 2002 Ximian, Inc.
   8  */
   9
  10 #ifndef _WAPI_CRITICAL_SECTIONS_H_
  11 #define _WAPI_CRITICAL_SECTIONS_H_
  12
  13 #include <glib.h>
  14 #include <pthread.h>
  15
  16 #include "mono-mutex.h"
  17
  18 G_BEGIN_DECLS
  19
  20 typedef struct _WapiCriticalSection WapiCriticalSection;
  21
  22 struct _WapiCriticalSection
  23 {
  24         guint32 depth;
  25         mono_mutex_t mutex;
  26 };
  27
  28 extern void InitializeCriticalSection(WapiCriticalSection *section);
  29 extern gboolean InitializeCriticalSectionAndSpinCount(WapiCriticalSection *section, guint32 spincount);
  30 extern void DeleteCriticalSection(WapiCriticalSection *section);
  31 extern guint32 SetCriticalSectionSpinCount(WapiCriticalSection *section, guint32 spincount);
  32 extern gboolean TryEnterCriticalSection(WapiCriticalSection *section);
  33
  34 /* These two are perf critical so avoid the wrapper function */
  35
  36 #define EnterCriticalSection(section) do { \
  37         int ret = mono_mutex_lock(&(section)->mutex);    \
  38         if (ret != 0) \
  39                 g_warning ("Bad call to mono_mutex_lock result %d", ret); \
  40         g_assert (ret == 0);                             \
  41 } while (0)
  42
  43 #define LeaveCriticalSection(section) do { \
  44         int ret = mono_mutex_unlock(&(section)->mutex);      \
  45         if (ret != 0) \
  46                 g_warning ("Bad call to mono_mutex_unlock result %d", ret); \
  47         g_assert (ret == 0);    \
  48 } while (0)
  49
  50 G_END_DECLS
  51
  52 #endif /* _WAPI_CRITICAL_SECTIONS_H_ */