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-api.h"
  18
  19 G_BEGIN_DECLS
  20
  21 /* JIT specific interface */
  22 extern volatile size_t mono_polling_required;
  23
  24 /* Runtime consumable API */
  25
  26 gboolean
  27 mono_threads_is_coop_enabled (void);
  28
  29 /* Internal API */
  30
  31 void
  32 mono_threads_state_poll (void);
  33
  34 static inline void
  35 mono_threads_safepoint (void)
  36 {
  37         if (G_UNLIKELY (mono_polling_required))
  38                 mono_threads_state_poll ();
  39 }
  40
  41 /*
  42  * The following are used for wrappers and trampolines as their
  43  * calls might be unbalanced, due to exception unwinding.
  44  */
  45
  46 gpointer
  47 mono_threads_enter_gc_safe_region_unbalanced (gpointer *stackdata);
  48
  49 void
  50 mono_threads_exit_gc_safe_region_unbalanced (gpointer cookie, gpointer *stackdata);
  51
  52 gpointer
  53 mono_threads_enter_gc_unsafe_region_unbalanced (gpointer *stackdata);
  54
  55 void
  56 mono_threads_exit_gc_unsafe_region_unbalanced (gpointer cookie, gpointer *stackdata);
  57
  58 #define MONO_ENTER_GC_UNSAFE_UNBALANCED \
  59         do {    \
  60                 gpointer __dummy;       \
  61                 gpointer __reset_cookie = mono_threads_enter_gc_unsafe_region_unbalanced (&__dummy)
  62
  63 #define MONO_EXIT_GC_UNSAFE_UNBALANCED  \
  64                 mono_threads_exit_gc_unsafe_region_unbalanced (__reset_cookie, &__dummy);       \
  65         } while (0)
  66
  67 G_END_DECLS
  68
  69 #endif