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compat/os2threads: support the return value of joined thread 

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
KO Myung-Hun 2016-02-15 00:20:34 +09:00 committed by Michael Niedermayer
parent 22a4046d66
commit 6bf5e7d3e7
1 changed files with 18 additions and 21 deletions
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39
compat/os2threads.h
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@ -35,9 +35,15 @@
#include <sys/builtin.h>
#include <sys/fmutex.h>
#include "libavutil/mem.h"
#include "libavutil/attributes.h"
typedef struct {
TID tid;
void *(*start_routine)(void *);
void *arg;
void *result;
} pthread_t;
typedef TID pthread_t;
typedef void pthread_attr_t;
typedef HMTX pthread_mutex_t;
@ -58,39 +64,30 @@ typedef struct {
#define PTHREAD_ONCE_INIT {0, _FMUTEX_INITIALIZER}
struct thread_arg {
void *(*start_routine)(void *);
void *arg;
};
static void thread_entry(void *arg)
{
struct thread_arg *thread_arg = arg;
pthread_t *thread = arg;
thread_arg->start_routine(thread_arg->arg);
av_free(thread_arg);
thread->result = thread->start_routine(thread->arg);
}
static av_always_inline int pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*start_routine)(void*), void *arg)
{
struct thread_arg *thread_arg;
thread->start_routine = start_routine;
thread->arg = arg;
thread->result = NULL;
thread_arg = av_mallocz(sizeof(struct thread_arg));
if (!thread_arg)
return ENOMEM;
thread_arg->start_routine = start_routine;
thread_arg->arg = arg;
*thread = _beginthread(thread_entry, NULL, 256 * 1024, thread_arg);
thread->tid = _beginthread(thread_entry, NULL, 1024 * 1024, thread);
return 0;
}
static av_always_inline int pthread_join(pthread_t thread, void **value_ptr)
{
DosWaitThread((PTID)&thread, DCWW_WAIT);
DosWaitThread(&thread.tid, DCWW_WAIT);
if (value_ptr)
*value_ptr = thread.result;
return 0;
}