#if defined(USE_WINDOWS_BACKEND)
#include <mono/utils/mono-compiler.h>
+#include <mono/utils/mono-threads-debug.h>
#include <limits.h>
}
CloseHandle (handle);
- return info->suspend_can_continue;
+ return TRUE;
}
gboolean
return info->suspend_can_continue;
}
+static void CALLBACK
+abort_apc (ULONG_PTR param)
+{
+ THREADS_INTERRUPT_DEBUG ("%06d - abort_apc () called", GetCurrentThreadId ());
+}
+
+void
+mono_threads_suspend_abort_syscall (MonoThreadInfo *info)
+{
+ DWORD id = mono_thread_info_get_tid (info);
+ HANDLE handle;
+
+ handle = OpenThread (THREAD_ALL_ACCESS, FALSE, id);
+ g_assert (handle);
+
+ THREADS_INTERRUPT_DEBUG ("%06d - Aborting syscall in thread %06d", GetCurrentThreadId (), id);
+ QueueUserAPC ((PAPCFUNC)abort_apc, handle, (ULONG_PTR)NULL);
+
+ CloseHandle (handle);
+}
+
gboolean
mono_threads_suspend_begin_async_resume (MonoThreadInfo *info)
{
{
}
-#endif
-
-#if defined (HOST_WIN32)
-
void
-mono_threads_platform_register (MonoThreadInfo *info)
+mono_threads_suspend_init_signals (void)
{
- HANDLE thread_handle;
+}
+
+gint
+mono_threads_suspend_search_alternative_signal (void)
+{
+ g_assert_not_reached ();
+}
- thread_handle = GetCurrentThread ();
- g_assert (thread_handle);
+gint
+mono_threads_suspend_get_suspend_signal (void)
+{
+ return -1;
+}
- /* The handle returned by GetCurrentThread () is a pseudo handle, so it can't
- * be used to refer to the thread from other threads for things like aborting. */
- DuplicateHandle (GetCurrentProcess (), thread_handle, GetCurrentProcess (), &thread_handle, THREAD_ALL_ACCESS, TRUE, 0);
+gint
+mono_threads_suspend_get_restart_signal (void)
+{
+ return -1;
+}
- g_assert (!info->handle);
- info->handle = thread_handle;
+gint
+mono_threads_suspend_get_abort_signal (void)
+{
+ return -1;
}
+#endif
+
+#if defined (HOST_WIN32)
+
int
mono_threads_platform_create_thread (MonoThreadStart thread_fn, gpointer thread_data, gsize* const stack_size, MonoNativeThreadId *out_tid)
{
}
+#if SIZEOF_VOID_P == 4 && G_HAVE_API_SUPPORT(HAVE_CLASSIC_WINAPI_SUPPORT)
+typedef BOOL (WINAPI *LPFN_ISWOW64PROCESS) (HANDLE, PBOOL);
+static gboolean is_wow64 = FALSE;
+#endif
+
+/* We do this at init time to avoid potential races with module opening */
+void
+mono_threads_platform_init (void)
+{
+#if SIZEOF_VOID_P == 4 && G_HAVE_API_SUPPORT(HAVE_CLASSIC_WINAPI_SUPPORT)
+ LPFN_ISWOW64PROCESS is_wow64_func = (LPFN_ISWOW64PROCESS) GetProcAddress (GetModuleHandle (TEXT ("kernel32")), "IsWow64Process");
+ if (is_wow64_func)
+ is_wow64_func (GetCurrentProcess (), &is_wow64);
+#endif
+}
+
+/*
+ * When running x86 process under x64 system syscalls are done through WoW64. This
+ * needs to do a transition from x86 mode to x64 so it can syscall into the x64 system.
+ * Apparently this transition invalidates the ESP that we would get from calling
+ * GetThreadContext, so we would fail to scan parts of the thread stack. We attempt
+ * to query whether the thread is in such a transition so we try to restart it later.
+ * We check CONTEXT_EXCEPTION_ACTIVE for this, which is highly undocumented.
+ */
+gboolean
+mono_threads_platform_in_critical_region (MonoNativeThreadId tid)
+{
+ gboolean ret = FALSE;
+#if SIZEOF_VOID_P == 4 && G_HAVE_API_SUPPORT(HAVE_CLASSIC_WINAPI_SUPPORT)
+/* FIXME On cygwin these are not defined */
+#if defined(CONTEXT_EXCEPTION_REQUEST) && defined(CONTEXT_EXCEPTION_REPORTING) && defined(CONTEXT_EXCEPTION_ACTIVE)
+ if (is_wow64) {
+ HANDLE handle = OpenThread (THREAD_ALL_ACCESS, FALSE, tid);
+ if (handle) {
+ CONTEXT context;
+ ZeroMemory (&context, sizeof (CONTEXT));
+ context.ContextFlags = CONTEXT_EXCEPTION_REQUEST;
+ if (GetThreadContext (handle, &context)) {
+ if ((context.ContextFlags & CONTEXT_EXCEPTION_REPORTING) &&
+ (context.ContextFlags & CONTEXT_EXCEPTION_ACTIVE))
+ ret = TRUE;
+ }
+ CloseHandle (handle);
+ }
+ }
+#endif
+#endif
+ return ret;
+}
+
gboolean
mono_threads_platform_yield (void)
{
}
void
-mono_threads_platform_exit (int exit_code)
+mono_threads_platform_exit (gsize exit_code)
{
- mono_thread_info_detach ();
ExitThread (exit_code);
}
-void
-mono_threads_platform_unregister (MonoThreadInfo *info)
-{
- g_assert (info->handle);
-
- CloseHandle (info->handle);
- info->handle = NULL;
-}
-
int
mono_threads_get_max_stack_size (void)
{
return INT_MAX;
}
-gpointer
-mono_threads_platform_duplicate_handle (MonoThreadInfo *info)
-{
- HANDLE thread_handle;
-
- g_assert (info->handle);
- DuplicateHandle (GetCurrentProcess (), info->handle, GetCurrentProcess (), &thread_handle, THREAD_ALL_ACCESS, TRUE, 0);
-
- return thread_handle;
-}
-
-HANDLE
-mono_threads_platform_open_thread_handle (HANDLE handle, MonoNativeThreadId tid)
-{
- return OpenThread (THREAD_ALL_ACCESS, TRUE, tid);
-}
-
-void
-mono_threads_platform_close_thread_handle (HANDLE handle)
-{
- CloseHandle (handle);
-}
-
#if defined(_MSC_VER)
const DWORD MS_VC_EXCEPTION=0x406D1388;
#pragma pack(push,8)
#endif
}
-void
-mono_threads_platform_set_exited (gpointer handle)
-{
-}
-
-void
-mono_threads_platform_init (void)
-{
-}
-
#endif
projects / mono.git / blobdiff