static char *CtdlThreadStates[CTDL_THREAD_LAST_STATE];
double CtdlThreadLoadAvg = 0;
double CtdlThreadWorkerAvg = 0;
+pthread_key_t ThreadKey;
+
/*
* Pinched the following bits regarding signals from Kannel.org
*/
}
+
+/*
+ * A function to destroy the TSD
+ */
+static void ctdl_thread_internal_dest_tsd(void *arg)
+{
+ if (arg != NULL) {
+ check_handles(arg);
+ free(arg);
+ }
+}
+
+
+/*
+ * A function to initialise the thread TSD
+ */
+void ctdl_thread_internal_init_tsd(void)
+{
+ int ret;
+
+ if ((ret = pthread_key_create(&ThreadKey, ctdl_thread_internal_dest_tsd))) {
+ lprintf(CTDL_EMERG, "pthread_key_create: %s\n",
+ strerror(ret));
+ exit(CTDLEXIT_DB);
+ }
+}
+
+/*
+ * Ensure that we have a key for thread-specific data.
+ *
+ * This should be called immediately after startup by any thread
+ *
+ */
+void CtdlThreadAllocTSD(void)
+{
+ ThreadTSD *tsd;
+
+ if (pthread_getspecific(ThreadKey) != NULL)
+ return;
+
+ tsd = malloc(sizeof(ThreadTSD));
+
+ tsd->tid = NULL;
+
+ memset(tsd->cursors, 0, sizeof tsd->cursors);
+ tsd->self = NULL;
+
+ pthread_setspecific(ThreadKey, tsd);
+}
+
+
+void ctdl_thread_internal_free_tsd(void)
+{
+ ctdl_thread_internal_dest_tsd(pthread_getspecific(ThreadKey));
+ pthread_setspecific(ThreadKey, NULL);
+}
+
+
void ctdl_thread_internal_cleanup(void)
{
int i;
{
free (CtdlThreadStates[i]);
}
+ ctdl_thread_internal_free_tsd();
}
void ctdl_thread_internal_init(void)
this_thread->name = "Garbage Collection Thread";
this_thread->tid = GC_thread;
+ CT = this_thread;
num_threads++; // Increase the count of threads in the system.
return ret;
}
-/*
- * A function to find the thread structure for this thread
- */
-struct CtdlThreadNode *CtdlThreadSelf(void)
-{
- pthread_t self_tid;
- struct CtdlThreadNode *this_thread;
-
- self_tid = pthread_self();
-
- begin_critical_section(S_THREAD_LIST);
- this_thread = CtdlThreadList;
- while(this_thread)
- {
- pthread_mutex_lock(&this_thread->ThreadMutex);
- if (pthread_equal(self_tid, this_thread->tid))
- {
- pthread_mutex_unlock(&this_thread->ThreadMutex);
- end_critical_section(S_THREAD_LIST);
- return this_thread;
- }
- pthread_mutex_unlock(&this_thread->ThreadMutex);
- this_thread = this_thread->next;
- }
- end_critical_section(S_THREAD_LIST);
- return NULL;
-}
-
* A function to rename a thread
* Returns a const char *
*/
-const char *CtdlThreadName(struct CtdlThreadNode *thread, const char *name)
+const char *CtdlThreadName(const char *name)
{
- struct CtdlThreadNode *this_thread;
const char *old_name;
- if (!thread)
- this_thread = CtdlThreadSelf();
- else
- this_thread = thread;
- if (!this_thread)
+ if (!CT)
{
CtdlLogPrintf(CTDL_WARNING, "Thread system WARNING. Attempt to CtdlThreadRename() a non thread. %s\n", name);
return NULL;
}
-// begin_critical_section(S_THREAD_LIST);
- pthread_mutex_lock(&this_thread->ThreadMutex);
- old_name = this_thread->name;
+ pthread_mutex_lock(&CT->ThreadMutex);
+ old_name = CT->name;
if (name)
- this_thread->name = name;
- pthread_mutex_unlock(&this_thread->ThreadMutex);
-// end_critical_section (S_THREAD_LIST);
+ CT->name = name;
+ pthread_mutex_unlock(&CT->ThreadMutex);
return (old_name);
}
struct CtdlThreadNode *this_thread;
if (!thread)
- this_thread = CtdlThreadSelf();
+ this_thread = CT;
else
this_thread = thread;
if (!this_thread)
/*
* A function for a thread to check if it has been asked to stop
*/
-int CtdlThreadCheckStop(struct CtdlThreadNode *this_thread)
+int CtdlThreadCheckStop(void)
{
- if (!this_thread)
+ if (!CT)
{
CtdlLogPrintf(CTDL_EMERG, "Thread system PANIC, CtdlThreadCheckStop() called by a non thread.\n");
CtdlThreadStopAll();
return -1;
}
- pthread_mutex_lock(&this_thread->ThreadMutex);
- if(this_thread->state == CTDL_THREAD_STOP_REQ)
+ pthread_mutex_lock(&CT->ThreadMutex);
+ if(CT->state == CTDL_THREAD_STOP_REQ)
{
- this_thread->state = CTDL_THREAD_STOPPING;
- pthread_mutex_unlock(&this_thread->ThreadMutex);
+ CT->state = CTDL_THREAD_STOPPING;
+ pthread_mutex_unlock(&CT->ThreadMutex);
return -1;
}
- else if((this_thread->state < CTDL_THREAD_STOP_REQ) && (this_thread->state > CTDL_THREAD_CREATE))
+ else if((CT->state < CTDL_THREAD_STOP_REQ) && (CT->state > CTDL_THREAD_CREATE))
{
- pthread_mutex_unlock(&this_thread->ThreadMutex);
+ pthread_mutex_unlock(&CT->ThreadMutex);
return -1;
}
- pthread_mutex_unlock(&this_thread->ThreadMutex);
+ pthread_mutex_unlock(&CT->ThreadMutex);
return 0;
}
struct CtdlThreadNode *this_thread;
if (!thread)
- this_thread = CtdlThreadSelf();
+ this_thread = CT;
else
this_thread = thread;
if (!this_thread)
{
struct timespec wake_time;
struct timeval time_now;
- struct CtdlThreadNode *self;
- self = CtdlThreadSelf();
- if (!self)
+ if (!CT)
{
CtdlLogPrintf(CTDL_WARNING, "CtdlThreadSleep() called by something that is not a thread. Should we die?\n");
return;
wake_time.tv_nsec = time_now.tv_usec * 10;
// begin_critical_section(S_THREAD_LIST);
- ctdl_thread_internal_change_state (self, CTDL_THREAD_SLEEPING);
+ ctdl_thread_internal_change_state (CT, CTDL_THREAD_SLEEPING);
// end_critical_section(S_THREAD_LIST);
// pthread_mutex_lock(&self->SleepMutex); /* Prevent something asking us to awaken before we've gone to sleep */
- pthread_mutex_lock(&self->ThreadMutex); /* Prevent something asking us to awaken before we've gone to sleep */
- pthread_cond_timedwait(&self->SleepCond, &self->ThreadMutex, &wake_time);
- pthread_mutex_unlock(&self->ThreadMutex);
+ pthread_mutex_lock(&CT->ThreadMutex); /* Prevent something asking us to awaken before we've gone to sleep */
+ pthread_cond_timedwait(&CT->SleepCond, &CT->ThreadMutex, &wake_time);
+ pthread_mutex_unlock(&CT->ThreadMutex);
// pthread_mutex_unlock(&self->SleepMutex);
// begin_critical_section(S_THREAD_LIST);
- ctdl_thread_internal_change_state (self, CTDL_THREAD_RUNNING);
+ ctdl_thread_internal_change_state (CT, CTDL_THREAD_RUNNING);
// end_critical_section(S_THREAD_LIST);
}
*/
static void ctdl_internal_thread_cleanup(void *arg)
{
- struct CtdlThreadNode *this_thread;
- this_thread = CtdlThreadSelf();
/*
* In here we were called by the current thread because it is exiting
* NB. WE ARE THE CURRENT THREAD
*/
- CtdlLogPrintf(CTDL_NOTICE, "Thread \"%s\" (%ld) exited.\n", this_thread->name, this_thread->tid);
+ CtdlLogPrintf(CTDL_NOTICE, "Thread \"%s\" (%ld) exited.\n", CT->name, CT->tid);
// begin_critical_section(S_THREAD_LIST);
#ifdef HAVE_BACKTRACE
eCrash_UnregisterThread();
#endif
- pthread_mutex_lock(&this_thread->ThreadMutex);
- this_thread->state = CTDL_THREAD_EXITED; // needs to be last thing else house keeping will unlink us too early
- pthread_mutex_unlock(&this_thread->ThreadMutex);
+ pthread_mutex_lock(&CT->ThreadMutex);
+ CT->state = CTDL_THREAD_EXITED; // needs to be last thing else house keeping will unlink us too early
+ pthread_mutex_unlock(&CT->ThreadMutex);
// end_critical_section(S_THREAD_LIST);
// CtdlThreadGC();
}
// Register the cleanup function to take care of when we exit.
pthread_cleanup_push(ctdl_internal_thread_cleanup, NULL);
// Get our thread data structure
+ CtdlThreadAllocTSD();
+ CT = this_thread;
this_thread->pid = getpid();
memcpy(&this_thread->last_state_change, &this_thread->start_time, sizeof (struct timeval)); /* Changed state so mark it. */
/* Only change to running state if we weren't asked to stop during the create cycle
*/
pthread_mutex_unlock(&this_thread->ThreadMutex);
- if (!CtdlThreadCheckStop(this_thread))
+ if (!CtdlThreadCheckStop())
{
pthread_mutex_lock(&this_thread->ThreadMutex);
this_thread->state = CTDL_THREAD_RUNNING;
/*
* run the thread to do the work but only if we haven't been asked to stop
*/
- if (!CtdlThreadCheckStop(this_thread))
+ if (!CtdlThreadCheckStop())
ret = (this_thread->thread_func)(this_thread->user_args);
/*
int force_purge = 0;
int m;
- CT_PUSH();
-
- cdb_allocate_tsd();
- while (!CtdlThreadCheckStop(CT)) {
+ while (!CtdlThreadCheckStop()) {
/* make doubly sure we're not holding any stale db handles
* which might cause a deadlock.
}
}
- if (!CtdlThreadCheckStop(CT)) {
+ if (!CtdlThreadCheckStop()) {
tv.tv_sec = 1; /* wake up every second if no input */
tv.tv_usec = 0;
retval = CtdlThreadSelect(highest + 1, &readfds, NULL, NULL, &tv, CT);
}
- if (CtdlThreadCheckStop(CT)) return(NULL);
+ if (CtdlThreadCheckStop()) return(NULL);
/* Now figure out who made this select() unblock.
* First, check for an error or exit condition.
if (errno != EINTR) {
CtdlLogPrintf(CTDL_EMERG, "Exiting (%s)\n", strerror(errno));
CtdlThreadStopAll();
- } else if (!CtdlThreadCheckStop(CT)) {
+ } else if (!CtdlThreadCheckStop()) {
CtdlLogPrintf(CTDL_DEBUG, "Un handled select failure.\n");
goto do_select;
}
projects / citadel.git / blobdiff