| /* GLIB - Library of useful routines for C programming |
| * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
| * |
| * Wine Gstramer integration |
| * Copyright 2010 Aric Stewart, CodeWeavers |
| * |
| * gthread.c: solaris thread system implementation |
| * Copyright 1998-2001 Sebastian Wilhelmi; University of Karlsruhe |
| * Copyright 2001 Hans Breuer |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| /* |
| * Modified by the GLib Team and others 1997-2000. See the AUTHORS |
| * file for a list of people on the GLib Team. See the ChangeLog |
| * files for a list of changes. These files are distributed with |
| * GLib at ftp://ftp.gtk.org/pub/gtk/. |
| */ |
| |
| #include "config.h" |
| |
| #ifdef HAVE_PTHREAD_H |
| #include <pthread.h> |
| #endif |
| |
| #include <glib.h> |
| |
| #include <errno.h> |
| #include <stdarg.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| |
| #include "windef.h" |
| #include "winbase.h" |
| #include "winnls.h" |
| #include "wine/debug.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(gstreamer); |
| |
| static gchar * |
| g_win32_error_message (gint error) |
| { |
| gchar *retval; |
| WCHAR *msg = NULL; |
| int nchars; |
| |
| FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER |
| |FORMAT_MESSAGE_IGNORE_INSERTS |
| |FORMAT_MESSAGE_FROM_SYSTEM, |
| NULL, error, 0, |
| (LPWSTR) &msg, 0, NULL); |
| if (msg != NULL) |
| { |
| nchars = WideCharToMultiByte(CP_UTF8, 0, msg, -1, NULL, 0, NULL, NULL); |
| |
| if (nchars > 2 && msg[nchars-1] == '\n' && msg[nchars-2] == '\r') |
| msg[nchars-2] = '\0'; |
| |
| retval = g_utf16_to_utf8 (msg, -1, NULL, NULL, NULL); |
| |
| LocalFree (msg); |
| } |
| else |
| retval = g_strdup (""); |
| |
| return retval; |
| } |
| |
| static gint g_thread_priority_map [G_THREAD_PRIORITY_URGENT + 1] = { |
| THREAD_PRIORITY_BELOW_NORMAL, |
| THREAD_PRIORITY_NORMAL, |
| THREAD_PRIORITY_ABOVE_NORMAL, |
| THREAD_PRIORITY_HIGHEST |
| }; |
| |
| static DWORD g_thread_self_tls; |
| |
| /* A "forward" declaration of this structure */ |
| static GThreadFunctions g_thread_functions_for_glib_use_default; |
| |
| typedef struct _GThreadData GThreadData; |
| struct _GThreadData |
| { |
| GThreadFunc func; |
| gpointer data; |
| HANDLE thread; |
| gboolean joinable; |
| }; |
| |
| static GMutex * |
| g_mutex_new_posix_impl (void) |
| { |
| GMutex *result = (GMutex *) g_new (pthread_mutex_t, 1); |
| pthread_mutex_init ((pthread_mutex_t *) result, NULL); |
| return result; |
| } |
| |
| static void |
| g_mutex_free_posix_impl (GMutex * mutex) |
| { |
| pthread_mutex_destroy ((pthread_mutex_t *) mutex); |
| g_free (mutex); |
| } |
| |
| /* NOTE: the functions g_mutex_lock and g_mutex_unlock may not use |
| functions from gmem.c and gmessages.c; */ |
| |
| /* pthread_mutex_lock, pthread_mutex_unlock can be taken directly, as |
| signature and semantic are right, but without error check then!!!!, |
| we might want to change this therefore. */ |
| |
| static gboolean |
| g_mutex_trylock_posix_impl (GMutex * mutex) |
| { |
| int result; |
| |
| result = pthread_mutex_trylock ((pthread_mutex_t *) mutex); |
| |
| if (result == EBUSY) |
| return FALSE; |
| |
| if (result) ERR("pthread_mutex_trylock %x\n",result); |
| return TRUE; |
| } |
| |
| static GCond * |
| g_cond_new_posix_impl (void) |
| { |
| GCond *result = (GCond *) g_new (pthread_cond_t, 1); |
| pthread_cond_init ((pthread_cond_t *) result, NULL); |
| return result; |
| } |
| |
| /* pthread_cond_signal, pthread_cond_broadcast and pthread_cond_wait |
| can be taken directly, as signature and semantic are right, but |
| without error check then!!!!, we might want to change this |
| therefore. */ |
| |
| #define G_NSEC_PER_SEC 1000000000 |
| |
| static gboolean |
| g_cond_timed_wait_posix_impl (GCond * cond, |
| GMutex * entered_mutex, |
| GTimeVal * abs_time) |
| { |
| int result; |
| struct timespec end_time; |
| gboolean timed_out; |
| |
| g_return_val_if_fail (cond != NULL, FALSE); |
| g_return_val_if_fail (entered_mutex != NULL, FALSE); |
| |
| if (!abs_time) |
| { |
| result = pthread_cond_wait ((pthread_cond_t *)cond, |
| (pthread_mutex_t *) entered_mutex); |
| timed_out = FALSE; |
| } |
| else |
| { |
| end_time.tv_sec = abs_time->tv_sec; |
| end_time.tv_nsec = abs_time->tv_usec * (G_NSEC_PER_SEC / G_USEC_PER_SEC); |
| |
| g_return_val_if_fail (end_time.tv_nsec < G_NSEC_PER_SEC, TRUE); |
| |
| result = pthread_cond_timedwait ((pthread_cond_t *) cond, |
| (pthread_mutex_t *) entered_mutex, |
| &end_time); |
| timed_out = (result == ETIMEDOUT); |
| } |
| |
| if (!timed_out) |
| if (result) ERR("pthread_cond_timedwait %x\n",result); |
| |
| return !timed_out; |
| } |
| |
| static void |
| g_cond_free_posix_impl (GCond * cond) |
| { |
| pthread_cond_destroy ((pthread_cond_t *) cond); |
| g_free (cond); |
| } |
| |
| static GPrivate * |
| g_private_new_posix_impl (GDestroyNotify destructor) |
| { |
| GPrivate *result = (GPrivate *) g_new (pthread_key_t, 1); |
| pthread_key_create ((pthread_key_t *) result, destructor); |
| return result; |
| } |
| |
| /* NOTE: the functions g_private_get and g_private_set may not use |
| functions from gmem.c and gmessages.c */ |
| |
| static void |
| g_private_set_posix_impl (GPrivate * private_key, gpointer value) |
| { |
| if (!private_key) |
| return; |
| pthread_setspecific (*(pthread_key_t *) private_key, value); |
| } |
| |
| static gpointer |
| g_private_get_posix_impl (GPrivate * private_key) |
| { |
| if (!private_key) |
| return NULL; |
| return pthread_getspecific (*(pthread_key_t *) private_key); |
| } |
| |
| static void |
| g_thread_set_priority_win32_impl (gpointer thread, GThreadPriority priority) |
| { |
| GThreadData *target = *(GThreadData **)thread; |
| |
| g_return_if_fail ((int)priority >= G_THREAD_PRIORITY_LOW); |
| g_return_if_fail ((int)priority <= G_THREAD_PRIORITY_URGENT); |
| |
| SetThreadPriority (target->thread, g_thread_priority_map [priority]); |
| } |
| |
| static void |
| g_thread_self_win32_impl (gpointer thread) |
| { |
| GThreadData *self = TlsGetValue (g_thread_self_tls); |
| |
| if (!self) |
| { |
| /* This should only happen for the main thread! */ |
| HANDLE handle = GetCurrentThread (); |
| HANDLE process = GetCurrentProcess (); |
| self = g_new (GThreadData, 1); |
| DuplicateHandle (process, handle, process, &self->thread, 0, FALSE, |
| DUPLICATE_SAME_ACCESS); |
| TlsSetValue (g_thread_self_tls, self); |
| self->func = NULL; |
| self->data = NULL; |
| self->joinable = FALSE; |
| } |
| |
| *(GThreadData **)thread = self; |
| } |
| |
| static void |
| g_thread_exit_win32_impl (void) |
| { |
| GThreadData *self = TlsGetValue (g_thread_self_tls); |
| |
| if (self) |
| { |
| if (!self->joinable) |
| { |
| CloseHandle (self->thread); |
| g_free (self); |
| } |
| TlsSetValue (g_thread_self_tls, NULL); |
| } |
| |
| ExitThread (0); |
| } |
| |
| static guint __stdcall |
| g_thread_proxy (gpointer data) |
| { |
| GThreadData *self = (GThreadData*) data; |
| |
| TlsSetValue (g_thread_self_tls, self); |
| |
| self->func (self->data); |
| |
| g_thread_exit_win32_impl (); |
| |
| g_assert_not_reached (); |
| |
| return 0; |
| } |
| |
| static void |
| g_thread_create_win32_impl (GThreadFunc func, |
| gpointer data, |
| gulong stack_size, |
| gboolean joinable, |
| gboolean bound, |
| GThreadPriority priority, |
| gpointer thread, |
| GError **error) |
| { |
| guint ignore; |
| GThreadData *retval; |
| |
| g_return_if_fail (func); |
| g_return_if_fail ((int)priority >= G_THREAD_PRIORITY_LOW); |
| g_return_if_fail ((int)priority <= G_THREAD_PRIORITY_URGENT); |
| |
| retval = g_new(GThreadData, 1); |
| retval->func = func; |
| retval->data = data; |
| |
| retval->joinable = joinable; |
| |
| retval->thread = (HANDLE) CreateThread (NULL, stack_size, g_thread_proxy, |
| retval, 0, &ignore); |
| |
| if (retval->thread == NULL) |
| { |
| gchar *win_error = g_win32_error_message (GetLastError ()); |
| g_set_error (error, G_THREAD_ERROR, G_THREAD_ERROR_AGAIN, |
| "Error creating thread: %s", win_error); |
| g_free (retval); |
| g_free (win_error); |
| return; |
| } |
| |
| *(GThreadData **)thread = retval; |
| |
| g_thread_set_priority_win32_impl (thread, priority); |
| } |
| |
| static void |
| g_thread_yield_win32_impl (void) |
| { |
| Sleep(0); |
| } |
| |
| static void |
| g_thread_join_win32_impl (gpointer thread) |
| { |
| GThreadData *target = *(GThreadData **)thread; |
| |
| g_return_if_fail (target->joinable); |
| |
| WaitForSingleObject (target->thread, INFINITE); |
| |
| CloseHandle (target->thread); |
| g_free (target); |
| } |
| |
| static GThreadFunctions g_thread_functions_for_glib_use_default = |
| { |
| /* Posix functions here for speed */ |
| g_mutex_new_posix_impl, |
| (void (*)(GMutex *)) pthread_mutex_lock, |
| g_mutex_trylock_posix_impl, |
| (void (*)(GMutex *)) pthread_mutex_unlock, |
| g_mutex_free_posix_impl, |
| g_cond_new_posix_impl, |
| (void (*)(GCond *)) pthread_cond_signal, |
| (void (*)(GCond *)) pthread_cond_broadcast, |
| (void (*)(GCond *, GMutex *)) pthread_cond_wait, |
| g_cond_timed_wait_posix_impl, |
| g_cond_free_posix_impl, |
| g_private_new_posix_impl, |
| g_private_get_posix_impl, |
| g_private_set_posix_impl, |
| /* win32 function required here */ |
| g_thread_create_win32_impl, /* thread */ |
| g_thread_yield_win32_impl, |
| g_thread_join_win32_impl, |
| g_thread_exit_win32_impl, |
| g_thread_set_priority_win32_impl, |
| g_thread_self_win32_impl, |
| NULL /* no equal function necessary */ |
| }; |
| |
| void g_thread_impl_init (void) |
| { |
| static gboolean beenhere = FALSE; |
| |
| if (beenhere) |
| return; |
| |
| beenhere = TRUE; |
| |
| g_thread_self_tls = TlsAlloc (); |
| g_thread_init(&g_thread_functions_for_glib_use_default); |
| } |