mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-06-01 19:41:28 +00:00
69b7a292d6
Original commit message from CVS: Added a runtime option to use a dummy threading implementation that uses NOPs for all synchronisation and threading operations.
153 lines
3.6 KiB
C
153 lines
3.6 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <sys/time.h>
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#include <glib.h>
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#include "gstlog.h"
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static GMutex *mutex = NULL;
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static GCond *cond = NULL;
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static GMutex*
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gst_mutex_new_dummy_impl (void)
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{
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if (!mutex)
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mutex = g_malloc (8);
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return mutex;
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}
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static void gst_mutex_dummy_impl (GMutex *mutex) { /* NOP */ }
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static gboolean
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gst_mutex_trylock_dummy_impl (GMutex *mutex)
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{
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return TRUE;
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}
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static GCond*
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gst_cond_new_dummy_impl (void)
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{
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if (!cond)
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cond = g_malloc (8);
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return cond;
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}
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static void
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gst_cond_dummy_impl (GCond *cond) { /* NOP */ }
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static gboolean
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gst_cond_timed_wait_dummy_impl (GCond *cond, GMutex *mutex, GTimeVal *end_time)
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{
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struct timeval tvtarget;
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GTimeVal tvnow;
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guint64 now, target;
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gint64 diff;
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target = end_time->tv_sec * 1000000 + end_time->tv_usec;
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g_get_current_time (&tvnow);
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now = tvnow.tv_sec * 1000000 + tvnow.tv_usec;
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diff = target - now;
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if (diff > 1000) {
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tvtarget.tv_usec = diff % 1000000;
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tvtarget.tv_sec = diff / 1000000;
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select(0, NULL, NULL, NULL, &tvtarget);
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}
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return TRUE;
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}
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static GPrivate*
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gst_private_new_dummy_impl (GDestroyNotify destructor)
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{
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gpointer data;
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data = g_new0 (gpointer, 1);
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return (GPrivate *) data;
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}
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static gpointer
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gst_private_get_dummy_impl (GPrivate *private_key)
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{
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gpointer *data = (gpointer) private_key;
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return *data;
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}
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static void
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gst_private_set_dummy_impl (GPrivate *private_key, gpointer data)
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{
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*((gpointer*)private_key) = data;
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}
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static void
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gst_thread_create_dummy_impl (GThreadFunc func, gpointer data, gulong stack_size,
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gboolean joinable, gboolean bound, GThreadPriority priority,
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gpointer thread, GError **error)
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{
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g_warning ("GStreamer configured to not use threads");
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}
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static void
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gst_thread_dummy_impl (void) { /* NOP */ }
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static void
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gst_thread_dummy_impl_1 (gpointer thread) { /* NOP */ }
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static void
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gst_thread_set_priority_dummy_impl (gpointer thread, GThreadPriority priority) { /* NOP */ }
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static gboolean
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gst_thread_equal_dummy_impl (gpointer thread1, gpointer thread2)
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{
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return (thread1 == thread2);
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}
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GThreadFunctions
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gst_thread_dummy_functions =
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{
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gst_mutex_new_dummy_impl,
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(void (*)(GMutex *)) gst_mutex_dummy_impl,
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gst_mutex_trylock_dummy_impl,
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(void (*)(GMutex *)) gst_mutex_dummy_impl,
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gst_mutex_dummy_impl,
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gst_cond_new_dummy_impl,
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(void (*)(GCond *)) gst_cond_dummy_impl,
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(void (*)(GCond *)) gst_cond_dummy_impl,
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(void (*)(GCond *, GMutex *)) gst_cond_dummy_impl,
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gst_cond_timed_wait_dummy_impl,
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gst_cond_dummy_impl,
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gst_private_new_dummy_impl,
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gst_private_get_dummy_impl,
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gst_private_set_dummy_impl,
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gst_thread_create_dummy_impl,
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gst_thread_dummy_impl,
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gst_thread_dummy_impl_1,
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gst_thread_dummy_impl,
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gst_thread_set_priority_dummy_impl,
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gst_thread_dummy_impl_1,
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gst_thread_equal_dummy_impl
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};
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