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_safely (info->native_handle);
  35 }
  36
  37 gboolean
  38 mono_threads_core_suspend (MonoThreadInfo *info)
  39 {
  40         kern_return_t ret;
  41         g_assert (info);
  42
  43         ret = thread_suspend (info->native_handle);
  44         if (ret != KERN_SUCCESS)
  45                 return FALSE;
  46         return mono_threads_get_runtime_callbacks ()->
  47                 thread_state_init_from_handle (&info->suspend_state, mono_thread_info_get_tid (info), info->native_handle);
  48 }
  49
  50 gboolean
  51 mono_threads_core_resume (MonoThreadInfo *info)
  52 {
  53         kern_return_t ret;
  54
  55         if (info->async_target) {
  56                 MonoContext tmp = info->suspend_state.ctx;
  57                 mach_msg_type_number_t num_state;
  58                 thread_state_t state;
  59                 ucontext_t uctx;
  60                 mcontext_t mctx;
  61
  62                 mono_threads_get_runtime_callbacks ()->setup_async_callback (&tmp, info->async_target, info->user_data);
  63                 info->async_target = info->user_data = NULL;
  64
  65                 state = (thread_state_t) alloca (mono_mach_arch_get_thread_state_size ());
  66                 mctx = (mcontext_t) alloca (mono_mach_arch_get_mcontext_size ());
  67
  68                 ret = mono_mach_arch_get_thread_state (info->native_handle, state, &num_state);
  69                 if (ret != KERN_SUCCESS)
  70                         return FALSE;
  71
  72                 mono_mach_arch_thread_state_to_mcontext (state, mctx);
  73                 uctx.uc_mcontext = mctx;
  74                 mono_monoctx_to_sigctx (&tmp, &uctx);
  75
  76                 mono_mach_arch_mcontext_to_thread_state (mctx, state);
  77
  78                 ret = mono_mach_arch_set_thread_state (info->native_handle, state, num_state);
  79                 if (ret != KERN_SUCCESS)
  80                         return FALSE;
  81         }
  82
  83
  84         ret = thread_resume (info->native_handle);
  85         return ret == KERN_SUCCESS;
  86 }
  87
  88 void
  89 mono_threads_platform_register (MonoThreadInfo *info)
  90 {
  91         info->native_handle = mach_thread_self ();
  92 }
  93
  94 void
  95 mono_threads_platform_free (MonoThreadInfo *info)
  96 {
  97         mach_port_deallocate (current_task (), info->native_handle);
  98 }
  99
 100 MonoNativeThreadId
 101 mono_native_thread_id_get (void)
 102 {
 103         return pthread_self ();
 104 }
 105
 106 gboolean
 107 mono_native_thread_id_equals (MonoNativeThreadId id1, MonoNativeThreadId id2)
 108 {
 109         return pthread_equal (id1, id2);
 110 }
 111
 112 /*
 113  * mono_native_thread_create:
 114  *
 115  *   Low level thread creation function without any GC wrappers.
 116  */
 117 gboolean
 118 mono_native_thread_create (MonoNativeThreadId *tid, gpointer func, gpointer arg)
 119 {
 120         return pthread_create (tid, NULL, func, arg) == 0;
 121 }
 122
 123 #endif