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* RCS: @(#) $Id: tclUnixThrd.c,v 1.58 2008/05/09 04:58:54 georgeps Exp $
*/
#include "tclInt.h"
#ifdef TCL_THREADS
#include "pthread.h"
#include <pthread.h>
typedef struct ThreadSpecificData {
char nabuf[16];
} ThreadSpecificData;
static Tcl_ThreadDataKey dataKey;
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* These are for the critical sections inside this file.
*/
#define MASTER_LOCK pthread_mutex_lock(&masterLock)
#define MASTER_UNLOCK pthread_mutex_unlock(&masterLock)
#endif /* TCL_THREADS */
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*
*----------------------------------------------------------------------
*/
int
TclpThreadCreate(
Tcl_ThreadId *idPtr, /* Return, the ID of the thread */
Tcl_ThreadCreateProc proc, /* Main() function of the thread */
Tcl_ThreadCreateProc *proc, /* Main() function of the thread */
ClientData clientData, /* The one argument to Main() */
int stackSize, /* Size of stack for the new thread */
int flags) /* Flags controlling behaviour of the new
* thread. */
{
#ifdef TCL_THREADS
pthread_attr_t attr;
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*
* This solution is not optimal, as we should allow the user to
* specify a size at runtime, but we don't want to slow this function
* down, and that would still leave the main thread at the default.
*/
size_t size;
result = pthread_attr_getstacksize(&attr, &size);
if (!result && (size < TCL_THREAD_STACK_MIN)) {
pthread_attr_setstacksize(&attr, (size_t) TCL_THREAD_STACK_MIN);
}
#endif
#endif /* TCL_THREAD_STACK_MIN */
}
#endif
#endif /* HAVE_PTHREAD_ATTR_SETSTACKSIZE */
if (! (flags & TCL_THREAD_JOINABLE)) {
pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
}
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*/
void
Tcl_MutexLock(
Tcl_Mutex *mutexPtr) /* Really (pthread_mutex_t **) */
{
pthread_mutex_t *pmutexPtr;
if (*mutexPtr == NULL) {
MASTER_LOCK;
if (*mutexPtr == NULL) {
/*
* Double inside master lock check to avoid a race condition.
*/
pmutexPtr = (pthread_mutex_t *)ckalloc(sizeof(pthread_mutex_t));
pmutexPtr = (pthread_mutex_t *) ckalloc(sizeof(pthread_mutex_t));
pthread_mutex_init(pmutexPtr, NULL);
*mutexPtr = (Tcl_Mutex)pmutexPtr;
TclRememberMutex(mutexPtr);
}
MASTER_UNLOCK;
}
pmutexPtr = *((pthread_mutex_t **)mutexPtr);
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*----------------------------------------------------------------------
*/
void
Tcl_MutexUnlock(
Tcl_Mutex *mutexPtr) /* Really (pthread_mutex_t **) */
{
pthread_mutex_t *pmutexPtr = *(pthread_mutex_t **)mutexPtr;
pthread_mutex_t *pmutexPtr = *(pthread_mutex_t **) mutexPtr;
pthread_mutex_unlock(pmutexPtr);
}
/*
*----------------------------------------------------------------------
*
* TclpFinalizeMutex --
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*----------------------------------------------------------------------
*/
void
TclpFinalizeMutex(
Tcl_Mutex *mutexPtr)
{
pthread_mutex_t *pmutexPtr = *(pthread_mutex_t **)mutexPtr;
pthread_mutex_t *pmutexPtr = *(pthread_mutex_t **) mutexPtr;
if (pmutexPtr != NULL) {
pthread_mutex_destroy(pmutexPtr);
ckfree((char *) pmutexPtr);
*mutexPtr = NULL;
}
}
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TclpSetAllocCache(
void *arg)
{
pthread_setspecific(key, arg);
}
#endif /* USE_THREAD_ALLOC */
void *
TclpThreadCreateKey(void)
{
void *TclpThreadCreateKey(void) {
pthread_key_t *key;
key = TclpSysAlloc(sizeof *key, 0);
if (NULL == key) {
ptkeyPtr = TclpSysAlloc(sizeof *ptkeyPtr, 0);
if (NULL == ptkeyPtr) {
Tcl_Panic("unable to allocate thread key!");
}
if (pthread_key_create(key, NULL)) {
if (pthread_key_create(ptkeyPtr, NULL)) {
Tcl_Panic("unable to create pthread key!");
}
return key;
return ptkeyPtr;
}
void
void TclpThreadDeleteKey(void *keyPtr) {
pthread_key_t *key = keyPtr;
if (pthread_key_delete(*key)) {
if (pthread_key_delete(*ptkeyPtr)) {
Tcl_Panic("unable to delete key!");
}
TclpSysFree(keyPtr);
}
void
void TclpThreadSetMasterTSD(void *tsdKeyPtr, void *ptr) {
pthread_key_t *key = tsdKeyPtr;
if (pthread_setspecific(*key, ptr)) {
if (pthread_setspecific(*ptkeyPtr, ptr)) {
Tcl_Panic("unable to set master TSD value");
}
}
void *
void *TclpThreadGetMasterTSD(void *tsdKeyPtr) {
pthread_key_t *key = tsdKeyPtr;
return pthread_getspecific(*key);
return pthread_getspecific(*ptkeyPtr);
}
#endif /* TCL_THREADS */
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/
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