mono/utils/mono-threads-coop.h

   1 /**
   2  * \file
   3  * Cooperative suspend thread helpers
   4  *
   5  * Author:
   6  *      Rodrigo Kumpera (kumpera@gmail.com)
   7  *
   8  * (C) 2015 Xamarin
   9  */
  10
  11 #ifndef __MONO_THREADS_COOP_H__
  12 #define __MONO_THREADS_COOP_H__
  13
  14 #include <config.h>
  15 #include <glib.h>
  16
  17 #include "checked-build.h"
  18 #include "mono-threads.h"
  19 #include "mono-threads-api.h"
  20
  21 G_BEGIN_DECLS
  22
  23 /* JIT specific interface */
  24 extern volatile size_t mono_polling_required;
  25
  26 /* Runtime consumable API */
  27
  28 gboolean
  29 mono_threads_is_coop_enabled (void);
  30
  31 gboolean
  32 mono_threads_is_blocking_transition_enabled (void);
  33
  34 /* Internal API */
  35
  36 void
  37 mono_threads_state_poll (void);
  38
  39 static inline void
  40 mono_threads_safepoint (void)
  41 {
  42         if (G_UNLIKELY (mono_polling_required))
  43                 mono_threads_state_poll ();
  44 }
  45
  46 /*
  47  * The following are used when detaching a thread. We need to pass the MonoThreadInfo*
  48  * as a paramater as the thread info TLS key is being destructed, meaning that
  49  * mono_thread_info_current_unchecked will return NULL, which would lead to a
  50  * runtime assertion error when trying to switch the state of the current thread.
  51  */
  52
  53 gpointer
  54 mono_threads_enter_gc_safe_region_with_info (THREAD_INFO_TYPE *info, gpointer *stackdata);
  55
  56 #define MONO_ENTER_GC_SAFE_WITH_INFO(info)      \
  57         do {    \
  58                 gpointer __gc_safe_dummy;       \
  59                 gpointer __gc_safe_cookie = mono_threads_enter_gc_safe_region_with_info ((info), &__gc_safe_dummy)
  60
  61 #define MONO_EXIT_GC_SAFE_WITH_INFO     MONO_EXIT_GC_SAFE
  62
  63 gpointer
  64 mono_threads_enter_gc_unsafe_region_with_info (THREAD_INFO_TYPE *info, gpointer *stackdata);
  65
  66 #define MONO_ENTER_GC_UNSAFE_WITH_INFO(info)    \
  67         do {    \
  68                 gpointer __gc_unsafe_dummy;     \
  69                 gpointer __gc_unsafe_cookie = mono_threads_enter_gc_unsafe_region_with_info ((info), &__gc_unsafe_dummy)
  70
  71 #define MONO_EXIT_GC_UNSAFE_WITH_INFO   MONO_EXIT_GC_UNSAFE
  72
  73 gpointer
  74 mono_threads_enter_gc_unsafe_region_unbalanced_with_info (THREAD_INFO_TYPE *info, gpointer *stackdata);
  75
  76 G_END_DECLS
  77
  78 #endif