Revert "Revert "more thread syncs.""

This reverts commit 48a57a14f5.

include/tr/event_dispatcher.h

@@ -52,7 +52,8 @@ TR_CLASS(TR_EventDispatcher) {
 	TR_Queue               events;
 	pthread_mutex_t        events_lock;
 	pthread_cond_t         events_cond;
-	pthread_t              events_wait;
+	pthread_t              events_poll;
+	size_t                 events_handling;
 
 	TR_Hash                handler;
 	TR_EventHandler        default_handler;

include/tr/event_handler.h

@@ -24,6 +24,7 @@
 #define __TR_EVENT_HANDLER_H__
 
 #include <sys/types.h>
+#include <pthread.h>
 
 #include "trbase.h"
 #include "trdata.h"
@@ -68,6 +69,12 @@ void TR__eventHandlerClassCleanup(TR_class_ptr);
 					sizeof(TR_EventMethod_fptr)));                       \
 	} while(0)
 
+#define TR_INIT_HANDLER(cname)                                                      \
+	TR_INSTANCE(TR_Tree, cname##EventMethodsTree, NULL, PTHREAD_MUTEX_INITIALIZER); \
+	TR_INSTANCE(TR_Hash, cname##EventMethods, &(_##cname##EventMethodsTree.data), 0)
+
+#define TR_HANDLER_CVARS(cname) &(_##cname##EventMethods.data)
+
 #endif // __TR_EVENT_HANDLER_H__
 
 // vim: set ts=4 sw=4:

include/tr/event_subject.h

@@ -25,12 +25,14 @@
 
 #include <sys/types.h>
 #include <stdint.h>
+#include <pthread.h>
 
 #include "trbase.h"
 
 TR_CLASS(TR_EventSubject) {
-	int    fin;
-	size_t emitted;
+	int             fin;
+	size_t          emitted;
+	pthread_mutex_t lock;
 };
 TR_INSTANCE_INIT(TR_EventSubject);
 TR_CLASSVARS_DECL(TR_EventSubject) {
@@ -57,6 +59,16 @@ TR_CLASSVARS_DECL(TR_EventSubject) {
 intptr_t     TR__eventSubjectId(TR_class_ptr, size_t);
 TR_Event     TR_eventSubjectEmit(TR_EventSubject, int, void *);
 
+static
+inline
+void
+TR_eventSubjectAbsorb(TR_EventSubject this)
+{
+	pthread_mutex_lock(&this->lock);
+	this->emitted = this->emitted == 0 ? 0 : this->emitted - 1;
+	pthread_mutex_unlock(&this->lock);
+}
+
 #define TR_eventSubjectFinalize(es) ((es)->fin = TRUE)
 
 #endif // __TR_EVENT_SUBJECT_H__

include/tr/event_thread.h

@@ -29,8 +29,9 @@
 #include "event_dispatcher.h"
 
 TR_CLASS(TR_EventThread) {
-	TR_EventDispatcher dispatcher;
-	pthread_t          handle;
+	TR_EventDispatcher   dispatcher;
+	pthread_t            handle;
+	char               * name;
 };
 TR_INSTANCE_INIT(TR_EventThread);
 TR_CLASSVARS_DECL(TR_EventThread) {};

src/event.c

@@ -41,13 +41,13 @@ eventCtor(void * _this, va_list * params)
 	return 0;
 }
 
-static void eventDtor(void * _this)
+static
+void
+eventDtor(void * _this)
 {
 	TR_Event this = _this;
 
-	this->subject->emitted =
-		this->subject->emitted == 0 
-		? 0 : this->subject->emitted - 1;
+	TR_eventSubjectAbsorb(this->subject);
 
 	if (0 == this->subject->emitted && this->subject->fin) {
 		TR_delete(this->subject);

src/event_dispatcher.c

@@ -57,6 +57,7 @@ init_signals(void)
     signal(SIGABRT, terminate);
     signal(SIGALRM, SIG_IGN);
     signal(SIGURG, SIG_IGN);
+    signal(SIGUSR1, SIG_IGN);
 
     signal(SIGPIPE, SIG_IGN);
 }

src/event_dispatcher_start.c

@@ -20,6 +20,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#define _GNU_SOURCE
+
 #include "trbase.h"
 #include "trdata.h"
 #include "trhash.h"
@@ -49,28 +51,39 @@ TR_eventDispatcherStart(TR_EventDispatcher this)
 					(TR_EventSubject)this,
 					TR_DISPATCHER_EVENT_HEARTBEAT,
 					NULL);
-		} else if (TR_queueEmpty(this->events)) {
-			if (! this->events_wait) {
+		} else {
+			event = TR_queueGet(this->events);
+
+			if (! (event || this->events_poll || this->events_handling)) {
 				int evtid = TR_EVD_CLIENT == this->mode
 					? TR_DISPATCHER_EVENT_USER_WAIT
 					: TR_DISPATCHER_EVENT_DATA_WAIT;
 
-				this->events_wait = pthread_self();
+				this->events_poll = pthread_self();
 				event = TR_eventSubjectEmit((TR_EventSubject)this, evtid, NULL);
-			} else {
-				pthread_cond_wait(&(this->events_cond), &(this->events_lock));
-				event = NULL;
 			}
-		} else {
-			event = TR_queueGet(this->events);
 		}
 
-		pthread_mutex_unlock(&(this->events_lock));
-
 		if (! event) {
+			char buffer[17];
+
+			pthread_getname_np(pthread_self(), buffer, 17);
+			TR_loggerLog(TR_logger, TR_LOGGER_DEBUG,
+					"[%s] - enter cond wait",
+					buffer);
+			pthread_cond_wait(&(this->events_cond), &(this->events_lock));
+			TR_loggerLog(TR_logger, TR_LOGGER_DEBUG,
+					"[%s] - leave cond wait",
+					buffer);
+			event = NULL;
+			pthread_mutex_unlock(&(this->events_lock));
 			continue;
+		} else {
+			this->events_handling++;
 		}
 
+		pthread_mutex_unlock(&(this->events_lock));
+
 		handler_queue_hv = TR_hashGetByVal(
 				this->handler,
 				TR_sdbm(
@@ -104,9 +117,12 @@ TR_eventDispatcherStart(TR_EventDispatcher this)
 			TR_delete(event);
 		}
 
-		if (pthread_equal(this->events_wait, pthread_self())) {
-			this->events_wait = FALSE;
+		pthread_mutex_lock(&(this->events_lock));
+		this->events_handling--;
+		if (pthread_equal(this->events_poll, pthread_self())) {
+			this->events_poll = FALSE;
 		}
+		pthread_mutex_unlock(&(this->events_lock));
 	}
 }
 

src/event_handler_handle_event.c

@@ -20,6 +20,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#define _GNU_SOURCE
+
 #include <stdio.h>
 
 #include "trbase.h"
@@ -32,7 +34,7 @@
 TR_EventDone
 TR_eventHandlerHandleEvent(TR_EventHandler this, TR_Event event)
 {
-	TR_EventDone        retval;
+	char                buffer[17];
 	TR_EventMethod_fptr event_func     = NULL;
 	TR_HashValue        handle_func_hv = TR_hashGetByVal(
 			TR_CLASSVARS(TR_EventHandler, TR_GET_CLASS(this))->event_methods,
@@ -44,17 +46,17 @@ TR_eventHandlerHandleEvent(TR_EventHandler this, TR_Event event)
 
 	event_func = *(TR_EventMethod_fptr *)handle_func_hv->value;
 
-	retval = event_func(this, event);
+	pthread_getname_np(pthread_self(), buffer, 17);
 
 	TR_loggerLog(TR_logger, TR_LOGGER_DEBUG,
-			"[%ld] - HANDLE(%zd): %s event on %p with no. %d",
-			pthread_self(),
+			"[%s] - HANDLE(%zd): %s event on %p with no. %d",
+			buffer,
 			event->subject->emitted,
 			TR_getEventString(event),
 			event->subject,
 			event->serial);
 
-	return retval;
+	return event_func(this, event);
 }
 
 // vim: set ts=4 sw=4:

src/event_handler_issue_event.c

@@ -20,6 +20,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#define _GNU_SOURCE
+
 #include <stdio.h>
 #include <pthread.h>
 
@@ -32,12 +34,15 @@ int
 TR_eventHandlerIssueEvent(TR_EventHandler this, TR_Event event)
 {
 	if (event) {
-		int i;
+		int  i;
+		char buffer[17];
+
+		pthread_getname_np(pthread_self(), buffer, 17);
 
 		for (i=0; i<this->ndispatcher; i++) {
 			TR_loggerLog(TR_logger, TR_LOGGER_DEBUG,
-					"[%ld] - ISSUE(%zd): %s event on %p with no. %d",
-					pthread_self(),
+					"[%s] - ISSUE(%zd): %s event on %p with no. %d",
+					buffer,
 					event->subject->emitted,
 					TR_getEventString(event),
 					event->subject,

src/event_subject.c

@@ -27,8 +27,21 @@
 #include "tr/logger.h"
 #include "trbase.h"
 
-static int eventSubjectCtor(void * _this, va_list * params) { return 0; }
-static void eventSubjectDtor(void * _this) {}
+static
+int
+eventSubjectCtor(void * _this, va_list * params)
+{
+	pthread_mutex_init(&((TR_EventSubject)_this)->lock, NULL);
+
+	return 0;
+}
+
+static
+void
+eventSubjectDtor(void * _this)
+{
+	pthread_mutex_destroy(&((TR_EventSubject)_this)->lock);
+}
 
 TR_INIT_IFACE(TR_Class, eventSubjectCtor, eventSubjectDtor, NULL);
 TR_CREATE_CLASS(TR_EventSubject, NULL, NULL, TR_IF(TR_Class)) = {

src/event_subject_emit.c

@@ -22,6 +22,7 @@
 
 #include <stdio.h>
 #include <stdint.h>
+#include <pthread.h>
 
 #include "tr/event.h"
 #include "tr/event_subject.h"
@@ -37,7 +38,9 @@ TR_eventSubjectEmit(TR_EventSubject this, int idx, void * data)
 	if (id && ! this->fin) {
 		event = TR_new(TR_Event, id, this);
 		TR_eventSetData(event, data);
+		pthread_mutex_lock(&this->lock);
 		this->emitted++;
+		pthread_mutex_unlock(&this->lock);
 	}
 
 	return event;

src/event_thread.c

@@ -31,9 +31,13 @@ static
 int
 eventThreadCtor(void * _this, va_list * params)
 {
-	TR_EventThread this = _this;
+	TR_EventThread   this = _this;
+	char           * name;
 
 	this->dispatcher = va_arg(*params, TR_EventDispatcher);
+	name             = va_arg(*params, char *);
+
+	if (name) this->name = TR_strdup(name);
 
 	return 0;
 }
@@ -48,6 +52,8 @@ eventThreadDtor(void * _this)
 		pthread_cancel(this->handle);
 		pthread_join(this->handle, NULL);
 	}
+
+	TR_MEM_FREE(this->name);
 }
 
 TR_INIT_IFACE(TR_Class, eventThreadCtor, eventThreadDtor, NULL);

src/event_thread_start.c

@@ -20,6 +20,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#define _GNU_SOURCE
+
 #include <pthread.h>
 
 #include "trbase.h"
@@ -32,6 +34,7 @@ void *
 TR_eventStreadRun(void * message)
 {
 	TR_EventThread this = message;
+	if (this->name) pthread_setname_np(pthread_self(), this->name);
 	TR_eventDispatcherStart(this->dispatcher);
 	return NULL;
 }