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         gboolean res;
  53
  54         g_assert (info);
  55
  56         ret = thread_suspend (info->native_handle);
  57         if (ret != KERN_SUCCESS)
  58                 return FALSE;
  59         res = mono_threads_get_runtime_callbacks ()->
  60                 thread_state_init_from_handle (&info->suspend_state, mono_thread_info_get_tid (info), info->native_handle);
  61         if (!res)
  62                 thread_resume (info->native_handle);
  63         return res;
  64 }
  65
  66 gboolean
  67 mono_threads_core_resume (MonoThreadInfo *info)
  68 {
  69         kern_return_t ret;
  70
  71         if (info->async_target) {
  72                 MonoContext tmp = info->suspend_state.ctx;
  73                 mach_msg_type_number_t num_state;
  74                 thread_state_t state;
  75                 ucontext_t uctx;
  76                 mcontext_t mctx;
  77
  78                 mono_threads_get_runtime_callbacks ()->setup_async_callback (&tmp, info->async_target, info->user_data);
  79                 info->async_target = info->user_data = NULL;
  80
  81                 state = (thread_state_t) alloca (mono_mach_arch_get_thread_state_size ());
  82                 mctx = (mcontext_t) alloca (mono_mach_arch_get_mcontext_size ());
  83
  84                 ret = mono_mach_arch_get_thread_state (info->native_handle, state, &num_state);
  85                 if (ret != KERN_SUCCESS)
  86                         return FALSE;
  87
  88                 mono_mach_arch_thread_state_to_mcontext (state, mctx);
  89                 uctx.uc_mcontext = mctx;
  90                 mono_monoctx_to_sigctx (&tmp, &uctx);
  91
  92                 mono_mach_arch_mcontext_to_thread_state (mctx, state);
  93
  94                 ret = mono_mach_arch_set_thread_state (info->native_handle, state, num_state);
  95                 if (ret != KERN_SUCCESS)
  96                         return FALSE;
  97         }
  98
  99
 100         ret = thread_resume (info->native_handle);
 101         return ret == KERN_SUCCESS;
 102 }
 103
 104 void
 105 mono_threads_platform_register (MonoThreadInfo *info)
 106 {
 107         info->native_handle = mach_thread_self ();
 108 }
 109
 110 void
 111 mono_threads_platform_free (MonoThreadInfo *info)
 112 {
 113         mach_port_deallocate (current_task (), info->native_handle);
 114 }
 115
 116 MonoNativeThreadId
 117 mono_native_thread_id_get (void)
 118 {
 119         return pthread_self ();
 120 }
 121
 122 gboolean
 123 mono_native_thread_id_equals (MonoNativeThreadId id1, MonoNativeThreadId id2)
 124 {
 125         return pthread_equal (id1, id2);
 126 }
 127
 128 /*
 129  * mono_native_thread_create:
 130  *
 131  *   Low level thread creation function without any GC wrappers.
 132  */
 133 gboolean
 134 mono_native_thread_create (MonoNativeThreadId *tid, gpointer func, gpointer arg)
 135 {
 136         return pthread_create (tid, NULL, func, arg) == 0;
 137 }
 138
 139 #endif