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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include "opal/threads/threads.h"
#include "opal/constants.h"
static void opal_thread_construct(opal_thread_t *t);
OBJ_CLASS_INSTANCE(opal_thread_t,
opal_object_t,
opal_thread_construct, NULL);
/*
* Constructor
*/
static void opal_thread_construct(opal_thread_t *t)
{
t->t_run = 0;
#ifdef __WINDOWS__
t->t_handle = (HANDLE)NULL;
#elif OPAL_HAVE_POSIX_THREADS
t->t_handle = (pthread_t) -1;
#elif OPAL_HAVE_SOLARIS_THREADS
t->t_handle = (thread_t) -1;
#endif
}
#ifdef __WINDOWS__
/************************************************************************
* Windows threads
************************************************************************/
int opal_thread_start(opal_thread_t *t)
{
DWORD tid;
if (OPAL_ENABLE_DEBUG) {
if (NULL == t->t_run || t->t_handle != (HANDLE) -1L) {
return OPAL_ERR_BAD_PARAM;
}
}
t->t_handle = CreateThread(NULL, /* default security attributes */
0, /* default stack size */
(LPTHREAD_START_ROUTINE) t->t_run,
t, /* argument */
0, /* default creation flags */
&tid);
if (t->t_handle == NULL) {
return OPAL_ERROR;
}
return OPAL_SUCCESS;
}
int opal_thread_join(opal_thread_t *t, void **thr_return)
{
DWORD rc;
if (WaitForSingleObject(t->t_handle, INFINITE) != WAIT_OBJECT_0) {
return OPAL_ERROR;
}
if (!GetExitCodeThread(t->t_handle, &rc)) {
return OPAL_ERROR;
}
if( NULL != thr_return ) {
*thr_return = (void *)((intptr_t)rc);
}
return OPAL_SUCCESS;
}
bool opal_thread_self_compare(opal_thread_t *t)
{
HANDLE thread_handle;
thread_handle = GetCurrentThread();
return (thread_handle == t->t_handle ? true : false);
}
opal_thread_t *opal_thread_get_self(void)
{
opal_thread_t *t = OBJ_NEW(opal_thread_t);
t->t_handle = GetCurrentThread();
return t;
}
#elif OPAL_HAVE_POSIX_THREADS
/************************************************************************
* POSIX threads
************************************************************************/
int opal_thread_start(opal_thread_t *t)
{
int rc;
if (OPAL_ENABLE_DEBUG) {
if (NULL == t->t_run || t->t_handle != (pthread_t) -1) {
return OPAL_ERR_BAD_PARAM;
}
}
rc = pthread_create(&t->t_handle, NULL, (void*(*)(void*)) t->t_run, t);
return (rc == 0) ? OPAL_SUCCESS : OPAL_ERROR;
}
int opal_thread_join(opal_thread_t *t, void **thr_return)
{
int rc = pthread_join(t->t_handle, thr_return);
t->t_handle = (pthread_t) -1;
return (rc == 0) ? OPAL_SUCCESS : OPAL_ERROR;
}
bool opal_thread_self_compare(opal_thread_t *t)
{
return t->t_handle == pthread_self();
}
opal_thread_t *opal_thread_get_self(void)
{
opal_thread_t *t = OBJ_NEW(opal_thread_t);
t->t_handle = pthread_self();
return t;
}
#elif OPAL_HAVE_SOLARIS_THREADS
/************************************************************************
* Solaris threads
************************************************************************/
int opal_thread_start(opal_thread_t *t)
{
int rc;
if (OPAL_ENABLE_DEBUG) {
if (NULL == t->t_run || t->t_handle != (thread_t) -1) {
return OPAL_ERR_BAD_PARAM;
}
}
rc = thr_create(NULL, 0, (void*(*)(void*)) t->t_run, t, NULL,
&t->t_handle);
return (rc == 0) ? OPAL_SUCCESS : OPAL_ERROR;
}
int opal_thread_join(opal_thread_t *t, void **thr_return)
{
int rc = thr_join(t->t_handle, NULL, thr_return);
t->t_handle = (thread_t) -1;
return (rc == 0) ? OPAL_SUCCESS : OPAL_ERROR;
}
bool opal_thread_self_compare(opal_thread_t *t)
{
return t->t_handle == thr_self();
}
opal_thread_t *opal_thread_get_self(void)
{
opal_thread_t *t = OBJ_NEW(opal_thread_t);
t->t_handle = thr_self();
return t;
}
#else
/************************************************************************
* No thread support
************************************************************************/
int opal_thread_start(opal_thread_t *t)
{
return OPAL_ERROR;
}
int opal_thread_join(opal_thread_t *t, void **thr_return)
{
return OPAL_ERROR;
}
bool opal_thread_self_compare(opal_thread_t *t)
{
return true;
}
opal_thread_t *opal_thread_get_self(void)
{
return NULL;
}
#endif
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