mono/utils/mono-threads-mach.c

   1 /*
   2  * mono-threads-mach.c: Low-level threading, mach version
   3  *
   4  * Author:
   5  *      Rodrigo Kumpera (kumpera@gmail.com)
   6  *
   7  * (C) 2011 Novell, Inc
   8  */
   9
  10 #include "config.h"
  11
  12 #if defined(__MACH__)
  13
  14 #include <mono/utils/mach-support.h>
  15 #include <mono/utils/mono-compiler.h>
  16 #include <mono/utils/mono-semaphore.h>
  17 #include <mono/utils/mono-threads.h>
  18 #include <mono/utils/hazard-pointer.h>
  19 #include <mono/metadata/gc-internal.h>
  20 #include <mono/metadata/appdomain.h>
  21 #include <mono/metadata/threads-types.h>
  22
  23 #include <pthread.h>
  24 #include <errno.h>
  25
  26 void
  27 mono_threads_init_platform (void)
  28 {
  29 }
  30
  31 void
  32 mono_threads_core_interrupt (MonoThreadInfo *info)
  33 {
  34         thread_abort (info->native_handle);
  35 }
  36
  37 void
  38 mono_threads_core_abort_syscall (MonoThreadInfo *info)
  39 {
  40 }
  41
  42 gboolean
  43 mono_threads_core_needs_abort_syscall (void)
  44 {
  45         return FALSE;
  46 }
  47
  48 gboolean
  49 mono_threads_core_suspend (MonoThreadInfo *info)
  50 {
  51         kern_return_t ret;
  52         g_assert (info);
  53
  54         ret = thread_suspend (info->native_handle);
  55         if (ret != KERN_SUCCESS)
  56                 return FALSE;
  57         return mono_threads_get_runtime_callbacks ()->
  58                 thread_state_init_from_handle (&info->suspend_state, mono_thread_info_get_tid (info), info->native_handle);
  59 }
  60
  61 gboolean
  62 mono_threads_core_resume (MonoThreadInfo *info)
  63 {
  64         kern_return_t ret;
  65
  66         if (info->async_target) {
  67                 MonoContext tmp = info->suspend_state.ctx;
  68                 mach_msg_type_number_t num_state;
  69                 thread_state_t state;
  70                 ucontext_t uctx;
  71                 mcontext_t mctx;
  72
  73                 mono_threads_get_runtime_callbacks ()->setup_async_callback (&tmp, info->async_target, info->user_data);
  74                 info->async_target = info->user_data = NULL;
  75
  76                 state = (thread_state_t) alloca (mono_mach_arch_get_thread_state_size ());
  77                 mctx = (mcontext_t) alloca (mono_mach_arch_get_mcontext_size ());
  78
  79                 ret = mono_mach_arch_get_thread_state (info->native_handle, state, &num_state);
  80                 if (ret != KERN_SUCCESS)
  81                         return FALSE;
  82
  83                 mono_mach_arch_thread_state_to_mcontext (state, mctx);
  84                 uctx.uc_mcontext = mctx;
  85                 mono_monoctx_to_sigctx (&tmp, &uctx);
  86
  87                 mono_mach_arch_mcontext_to_thread_state (mctx, state);
  88
  89                 ret = mono_mach_arch_set_thread_state (info->native_handle, state, num_state);
  90                 if (ret != KERN_SUCCESS)
  91                         return FALSE;
  92         }
  93
  94
  95         ret = thread_resume (info->native_handle);
  96         return ret == KERN_SUCCESS;
  97 }
  98
  99 void
 100 mono_threads_platform_register (MonoThreadInfo *info)
 101 {
 102         info->native_handle = mach_thread_self ();
 103 }
 104
 105 void
 106 mono_threads_platform_free (MonoThreadInfo *info)
 107 {
 108         mach_port_deallocate (current_task (), info->native_handle);
 109 }
 110
 111 MonoNativeThreadId
 112 mono_native_thread_id_get (void)
 113 {
 114         return pthread_self ();
 115 }
 116
 117 gboolean
 118 mono_native_thread_id_equals (MonoNativeThreadId id1, MonoNativeThreadId id2)
 119 {
 120         return pthread_equal (id1, id2);
 121 }
 122
 123 /*
 124  * mono_native_thread_create:
 125  *
 126  *   Low level thread creation function without any GC wrappers.
 127  */
 128 gboolean
 129 mono_native_thread_create (MonoNativeThreadId *tid, gpointer func, gpointer arg)
 130 {
 131         return pthread_create (tid, NULL, func, arg) == 0;
 132 }
 133
 134 #endif