[FFmpeg-soc] [PATCH 1/9] Rename pthread.c to thread.c
Alexander Strange
astrange at ithinksw.com
Thu May 29 05:34:54 CEST 2008
I'll be merging {w32,os2,beos,p}thread.c into one file, since they all
use the same fork-join algorithm. I haven't settled on a lot of naming
issues in these yet, though, or whether framethread.c should also be
merged into there. For now, I'm only working with pthreads - they're
supposedly faster on Windows than w32threads, anyway.
From 7911f85af975c797b3d17e57e7405a36dc211977 Mon Sep 17 00:00:00 2001
From: Alexander Strange <astrange at ithinksw.com>
Date: Wed, 28 May 2008 22:40:30 -0400
Subject: [PATCH] Rename pthread.c to thread.c
The remaining *thread.c files will be merged into it later.
---
libavcodec/Makefile | 2 +-
libavcodec/pthread.c | 168
--------------------------------------------------
libavcodec/thread.c | 168 +++++++++++++++++++++++++++++++++++++++++
+++++++++
3 files changed, 169 insertions(+), 169 deletions(-)
delete mode 100644 libavcodec/pthread.c
create mode 100644 libavcodec/thread.c
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 237f2f8..c9b237f 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -364,7 +364,7 @@ OBJS-$(CONFIG_TEXT2MOVSUB_BSF) +=
movsub_bsf.o
OBJS-$(HAVE_BEOSTHREADS) += beosthread.o
OBJS-$(HAVE_OS2THREADS) += os2thread.o
-OBJS-$(HAVE_PTHREADS) += pthread.o
+OBJS-$(HAVE_PTHREADS) += thread.o
OBJS-$(HAVE_W32THREADS) += w32thread.o
OBJS-$(HAVE_XVMC) += xvmcvideo.o
diff --git a/libavcodec/pthread.c b/libavcodec/pthread.c
deleted file mode 100644
index 702adb5..0000000
--- a/libavcodec/pthread.c
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- * Copyright (c) 2004 Roman Shaposhnik.
- *
- * Many thanks to Steven M. Schultz for providing clever ideas and
- * to Michael Niedermayer <michaelni at gmx.at> for writing initial
- * implementation.
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg 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.
- *
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
- */
-#include <pthread.h>
-
-#include "avcodec.h"
-
-typedef int (action_t)(AVCodecContext *c, void *arg);
-
-typedef struct ThreadContext {
- pthread_t *workers;
- action_t *func;
- void **args;
- int *rets;
- int rets_count;
- int job_count;
-
- pthread_cond_t last_job_cond;
- pthread_cond_t current_job_cond;
- pthread_mutex_t current_job_lock;
- int current_job;
- int done;
-} ThreadContext;
-
-static void* attribute_align_arg worker(void *v)
-{
- AVCodecContext *avctx = v;
- ThreadContext *c = avctx->thread_opaque;
- int our_job = c->job_count;
- int thread_count = avctx->thread_count;
- int self_id;
-
- pthread_mutex_lock(&c->current_job_lock);
- self_id = c->current_job++;
- for (;;){
- while (our_job >= c->job_count) {
- if (c->current_job == thread_count + c->job_count)
- pthread_cond_signal(&c->last_job_cond);
-
- pthread_cond_wait(&c->current_job_cond, &c-
>current_job_lock);
- our_job = self_id;
-
- if (c->done) {
- pthread_mutex_unlock(&c->current_job_lock);
- return NULL;
- }
- }
- pthread_mutex_unlock(&c->current_job_lock);
-
- c->rets[our_job%c->rets_count] = c->func(avctx, c-
>args[our_job]);
-
- pthread_mutex_lock(&c->current_job_lock);
- our_job = c->current_job++;
- }
-}
-
-static av_always_inline void
avcodec_thread_park_workers(ThreadContext *c, int thread_count)
-{
- pthread_cond_wait(&c->last_job_cond, &c->current_job_lock);
- pthread_mutex_unlock(&c->current_job_lock);
-}
-
-void avcodec_thread_free(AVCodecContext *avctx)
-{
- ThreadContext *c = avctx->thread_opaque;
- int i;
-
- pthread_mutex_lock(&c->current_job_lock);
- c->done = 1;
- pthread_cond_broadcast(&c->current_job_cond);
- pthread_mutex_unlock(&c->current_job_lock);
-
- for (i=0; i<avctx->thread_count; i++)
- pthread_join(c->workers[i], NULL);
-
- pthread_mutex_destroy(&c->current_job_lock);
- pthread_cond_destroy(&c->current_job_cond);
- pthread_cond_destroy(&c->last_job_cond);
- av_free(c->workers);
- av_freep(&avctx->thread_opaque);
-}
-
-int avcodec_thread_execute(AVCodecContext *avctx, action_t* func,
void **arg, int *ret, int job_count)
-{
- ThreadContext *c= avctx->thread_opaque;
- int dummy_ret;
-
- if (job_count <= 0)
- return 0;
-
- pthread_mutex_lock(&c->current_job_lock);
-
- c->current_job = avctx->thread_count;
- c->job_count = job_count;
- c->args = arg;
- c->func = func;
- if (ret) {
- c->rets = ret;
- c->rets_count = job_count;
- } else {
- c->rets = &dummy_ret;
- c->rets_count = 1;
- }
- pthread_cond_broadcast(&c->current_job_cond);
-
- avcodec_thread_park_workers(c, avctx->thread_count);
-
- return 0;
-}
-
-int avcodec_thread_init(AVCodecContext *avctx, int thread_count)
-{
- int i;
- ThreadContext *c;
-
- c = av_mallocz(sizeof(ThreadContext));
- if (!c)
- return -1;
-
- c->workers = av_mallocz(sizeof(pthread_t)*thread_count);
- if (!c->workers) {
- av_free(c);
- return -1;
- }
-
- avctx->thread_opaque = c;
- avctx->thread_count = thread_count;
- c->current_job = 0;
- c->job_count = 0;
- c->done = 0;
- pthread_cond_init(&c->current_job_cond, NULL);
- pthread_cond_init(&c->last_job_cond, NULL);
- pthread_mutex_init(&c->current_job_lock, NULL);
- pthread_mutex_lock(&c->current_job_lock);
- for (i=0; i<thread_count; i++) {
- if(pthread_create(&c->workers[i], NULL, worker, avctx)) {
- avctx->thread_count = i;
- pthread_mutex_unlock(&c->current_job_lock);
- avcodec_thread_free(avctx);
- return -1;
- }
- }
-
- avcodec_thread_park_workers(c, thread_count);
-
- avctx->execute = avcodec_thread_execute;
- return 0;
-}
diff --git a/libavcodec/thread.c b/libavcodec/thread.c
new file mode 100644
index 0000000..702adb5
--- /dev/null
+++ b/libavcodec/thread.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright (c) 2004 Roman Shaposhnik.
+ *
+ * Many thanks to Steven M. Schultz for providing clever ideas and
+ * to Michael Niedermayer <michaelni at gmx.at> for writing initial
+ * implementation.
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
+ */
+#include <pthread.h>
+
+#include "avcodec.h"
+
+typedef int (action_t)(AVCodecContext *c, void *arg);
+
+typedef struct ThreadContext {
+ pthread_t *workers;
+ action_t *func;
+ void **args;
+ int *rets;
+ int rets_count;
+ int job_count;
+
+ pthread_cond_t last_job_cond;
+ pthread_cond_t current_job_cond;
+ pthread_mutex_t current_job_lock;
+ int current_job;
+ int done;
+} ThreadContext;
+
+static void* attribute_align_arg worker(void *v)
+{
+ AVCodecContext *avctx = v;
+ ThreadContext *c = avctx->thread_opaque;
+ int our_job = c->job_count;
+ int thread_count = avctx->thread_count;
+ int self_id;
+
+ pthread_mutex_lock(&c->current_job_lock);
+ self_id = c->current_job++;
+ for (;;){
+ while (our_job >= c->job_count) {
+ if (c->current_job == thread_count + c->job_count)
+ pthread_cond_signal(&c->last_job_cond);
+
+ pthread_cond_wait(&c->current_job_cond, &c-
>current_job_lock);
+ our_job = self_id;
+
+ if (c->done) {
+ pthread_mutex_unlock(&c->current_job_lock);
+ return NULL;
+ }
+ }
+ pthread_mutex_unlock(&c->current_job_lock);
+
+ c->rets[our_job%c->rets_count] = c->func(avctx, c-
>args[our_job]);
+
+ pthread_mutex_lock(&c->current_job_lock);
+ our_job = c->current_job++;
+ }
+}
+
+static av_always_inline void
avcodec_thread_park_workers(ThreadContext *c, int thread_count)
+{
+ pthread_cond_wait(&c->last_job_cond, &c->current_job_lock);
+ pthread_mutex_unlock(&c->current_job_lock);
+}
+
+void avcodec_thread_free(AVCodecContext *avctx)
+{
+ ThreadContext *c = avctx->thread_opaque;
+ int i;
+
+ pthread_mutex_lock(&c->current_job_lock);
+ c->done = 1;
+ pthread_cond_broadcast(&c->current_job_cond);
+ pthread_mutex_unlock(&c->current_job_lock);
+
+ for (i=0; i<avctx->thread_count; i++)
+ pthread_join(c->workers[i], NULL);
+
+ pthread_mutex_destroy(&c->current_job_lock);
+ pthread_cond_destroy(&c->current_job_cond);
+ pthread_cond_destroy(&c->last_job_cond);
+ av_free(c->workers);
+ av_freep(&avctx->thread_opaque);
+}
+
+int avcodec_thread_execute(AVCodecContext *avctx, action_t* func,
void **arg, int *ret, int job_count)
+{
+ ThreadContext *c= avctx->thread_opaque;
+ int dummy_ret;
+
+ if (job_count <= 0)
+ return 0;
+
+ pthread_mutex_lock(&c->current_job_lock);
+
+ c->current_job = avctx->thread_count;
+ c->job_count = job_count;
+ c->args = arg;
+ c->func = func;
+ if (ret) {
+ c->rets = ret;
+ c->rets_count = job_count;
+ } else {
+ c->rets = &dummy_ret;
+ c->rets_count = 1;
+ }
+ pthread_cond_broadcast(&c->current_job_cond);
+
+ avcodec_thread_park_workers(c, avctx->thread_count);
+
+ return 0;
+}
+
+int avcodec_thread_init(AVCodecContext *avctx, int thread_count)
+{
+ int i;
+ ThreadContext *c;
+
+ c = av_mallocz(sizeof(ThreadContext));
+ if (!c)
+ return -1;
+
+ c->workers = av_mallocz(sizeof(pthread_t)*thread_count);
+ if (!c->workers) {
+ av_free(c);
+ return -1;
+ }
+
+ avctx->thread_opaque = c;
+ avctx->thread_count = thread_count;
+ c->current_job = 0;
+ c->job_count = 0;
+ c->done = 0;
+ pthread_cond_init(&c->current_job_cond, NULL);
+ pthread_cond_init(&c->last_job_cond, NULL);
+ pthread_mutex_init(&c->current_job_lock, NULL);
+ pthread_mutex_lock(&c->current_job_lock);
+ for (i=0; i<thread_count; i++) {
+ if(pthread_create(&c->workers[i], NULL, worker, avctx)) {
+ avctx->thread_count = i;
+ pthread_mutex_unlock(&c->current_job_lock);
+ avcodec_thread_free(avctx);
+ return -1;
+ }
+ }
+
+ avcodec_thread_park_workers(c, thread_count);
+
+ avctx->execute = avcodec_thread_execute;
+ return 0;
+}
--
1.5.5.1
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