/*
The return value is only valid until a matching mono_thread_info_resume is called
*/
static MonoThreadInfo*
suspend_sync (MonoNativeThreadId tid, gboolean interrupt_kernel)
{
MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
MonoThreadInfo *info = mono_thread_info_lookup (tid); /*info on HP1*/
if (!info)
return NULL;
switch (mono_threads_transition_request_async_suspension (info)) {
case AsyncSuspendAlreadySuspended:
mono_hazard_pointer_clear (hp, 1); //XXX this is questionable we got to clean the suspend/resume nonsense of critical sections
return info;
case AsyncSuspendWait:
mono_threads_add_to_pending_operation_set (info);
break;
case AsyncSuspendInitSuspend:
if (!begin_async_suspend (info, interrupt_kernel)) {
mono_hazard_pointer_clear (hp, 1);
return NULL;
}
}
//Wait for the pending suspend to finish
mono_threads_wait_pending_operations ();
if (!check_async_suspend (info)) {
mono_hazard_pointer_clear (hp, 1);
return NULL;
}
return info;
}
gboolean
mono_thread_info_begin_suspend (MonoThreadInfo *info, gboolean interrupt_kernel)
{
switch (mono_threads_transition_request_async_suspension (info)) {
case AsyncSuspendAlreadySuspended:
return TRUE;
case AsyncSuspendWait:
mono_threads_add_to_pending_operation_set (info);
return TRUE;
case AsyncSuspendInitSuspend:
return mono_threads_core_begin_async_suspend (info, interrupt_kernel);
default:
g_assert_not_reached ();
}
}
gboolean
mono_thread_info_begin_suspend (MonoThreadInfo *info)
{
switch (mono_threads_transition_request_async_suspension (info)) {
case AsyncSuspendAlreadySuspended:
case AsyncSuspendBlocking:
return TRUE;
case AsyncSuspendWait:
mono_threads_add_to_pending_operation_set (info);
return TRUE;
case AsyncSuspendInitSuspend:
return begin_async_suspend (info, FALSE);
default:
g_assert_not_reached ();
}
}
