mono/utils/mono-threads-coop.h

   1 /*
   2  * mono-threads-coop.h: Cooperative suspend thread helpers
   3  *
   4  * Author:
   5  *      Rodrigo Kumpera (kumpera@gmail.com)
   6  *
   7  * (C) 2015 Xamarin
   8  */
   9
  10 #ifndef __MONO_THREADS_COOP_H__
  11 #define __MONO_THREADS_COOP_H__
  12
  13 #include <config.h>
  14 #include <glib.h>
  15
  16 #include "checked-build.h"
  17 #include "mono-threads.h"
  18 #include "mono-threads-api.h"
  19
  20 G_BEGIN_DECLS
  21
  22 /* JIT specific interface */
  23 extern volatile size_t mono_polling_required;
  24
  25 /* Runtime consumable API */
  26
  27 gboolean
  28 mono_threads_is_coop_enabled (void);
  29
  30 /* Internal API */
  31
  32 void
  33 mono_threads_state_poll (void);
  34
  35 static inline void
  36 mono_threads_safepoint (void)
  37 {
  38         if (G_UNLIKELY (mono_polling_required))
  39                 mono_threads_state_poll ();
  40 }
  41
  42 /*
  43  * The following are used when detaching a thread. We need to pass the MonoThreadInfo*
  44  * as a paramater as the thread info TLS key is being destructed, meaning that
  45  * mono_thread_info_current_unchecked will return NULL, which would lead to a
  46  * runtime assertion error when trying to switch the state of the current thread.
  47  */
  48
  49 gpointer
  50 mono_threads_enter_gc_safe_region_with_info (THREAD_INFO_TYPE *info, gpointer *stackdata);
  51
  52 #define MONO_ENTER_GC_SAFE_WITH_INFO(info)      \
  53         do {    \
  54                 gpointer __gc_safe_dummy;       \
  55                 gpointer __gc_safe_cookie = mono_threads_enter_gc_safe_region_with_info ((info), &__gc_safe_dummy)
  56
  57 #define MONO_EXIT_GC_SAFE_WITH_INFO     MONO_EXIT_GC_SAFE
  58
  59 gpointer
  60 mono_threads_enter_gc_unsafe_region_with_info (THREAD_INFO_TYPE *info, gpointer *stackdata);
  61
  62 #define MONO_ENTER_GC_UNSAFE_WITH_INFO(info)    \
  63         do {    \
  64                 gpointer __gc_unsafe_dummy;     \
  65                 gpointer __gc_unsafe_cookie = mono_threads_enter_gc_unsafe_region_with_info ((info), &__gc_unsafe_dummy)
  66
  67 #define MONO_EXIT_GC_UNSAFE_WITH_INFO   MONO_EXIT_GC_UNSAFE
  68
  69 gpointer
  70 mono_threads_enter_gc_unsafe_region_unbalanced_with_info (THREAD_INFO_TYPE *info, gpointer *stackdata);
  71
  72 G_END_DECLS
  73
  74 #endif