use atomic operation on statistics update operations

accel-pptpd/ctrl/l2tp/l2tp.c

@@ -119,11 +119,11 @@ static void l2tp_disconnect(struct l2tp_conn_t *conn)
 		triton_timer_del(&conn->hello_timer);
 
 	if (conn->state == STATE_PPP) {
-		stat_active--;
+		__sync_sub_and_fetch(&stat_active, 1);
 		conn->state = STATE_FIN;
 		ppp_terminate(&conn->ppp, TERM_USER_REQUEST, 1);
 	} else if (conn->state != STATE_FIN)
-		stat_starting--;
+		__sync_sub_and_fetch(&stat_starting, 1);
 
 	pthread_mutex_lock(&l2tp_lock);
 	l2tp_conn[conn->tid] = NULL;
@@ -201,7 +201,7 @@ static void l2tp_ppp_finished(struct ppp_t *ppp)
 	log_ppp_debug("l2tp: ppp finished\n");
 
 	if (conn->state != STATE_FIN) {
-		stat_active--;
+		__sync_sub_and_fetch(&stat_active, 1);
 		if (l2tp_terminate(conn, 0, 0))
 			triton_context_call(&conn->ctx, (triton_event_func)l2tp_disconnect, conn);
 	}
@@ -212,7 +212,7 @@ static void l2tp_conn_close(struct triton_context_t *ctx)
 	struct l2tp_conn_t *conn = container_of(ctx, typeof(*conn), ctx);
 	
 	if (conn->state == STATE_PPP) {
-		stat_active--;
+		__sync_sub_and_fetch(&stat_active, 1);
 		conn->state = STATE_FIN;
 		ppp_terminate(&conn->ppp, TERM_ADMIN_RESET, 1);
 	}
@@ -357,7 +357,7 @@ static int l2tp_tunnel_alloc(struct l2tp_serv_t *serv, struct l2tp_packet_t *pac
 
 	triton_context_call(&conn->ctx, (triton_event_func)l2tp_send_SCCRP, conn);
 
-	stat_starting++;
+	__sync_add_and_fetch(&stat_starting, 1);
 
 	return 0;
 
@@ -419,8 +419,8 @@ static int l2tp_connect(struct l2tp_conn_t *conn)
 	if (establish_ppp(&conn->ppp))
 		return -1;
 
-	stat_starting--;
-	stat_active++;
+	__sync_sub_and_fetch(&stat_starting, 1);
+	__sync_add_and_fetch(&stat_active, 1);
 
 	conn->state = STATE_PPP;
 	
@@ -835,7 +835,7 @@ static int l2tp_recv_CDN(struct l2tp_conn_t *conn, struct l2tp_packet_t *pack)
 	}
 
 	if (conn->state == STATE_PPP) {
-		stat_active--;
+		__sync_sub_and_fetch(&stat_active, 1);
 		conn->state = STATE_FIN;
 		ppp_terminate(&conn->ppp, TERM_USER_REQUEST, 1);
 	}

accel-pptpd/ctrl/pppoe/pppoe.c

@@ -82,7 +82,7 @@ void pppoe_server_free(struct pppoe_serv_t *serv);
 static void disconnect(struct pppoe_conn_t *conn)
 {
 	if (conn->ppp_started) {
-		stat_active--;
+		__sync_sub_and_fetch(&stat_active, 1);
 		conn->ppp_started = 0;
 		ppp_terminate(&conn->ppp, TERM_USER_REQUEST, 1);
 	}
@@ -132,7 +132,7 @@ static void ppp_finished(struct ppp_t *ppp)
 	log_ppp_debug("pppoe: ppp finished\n");
 
 	if (conn->ppp_started) {
-		stat_active--;
+		__sync_sub_and_fetch(&stat_active, 1);
 		conn->ppp_started = 0;
 		triton_context_call(&conn->ctx, (triton_event_func)disconnect, conn);
 	}
@@ -546,7 +546,7 @@ static void free_delayed_pado(struct delayed_pado_t *pado)
 {
 	triton_timer_del(&pado->timer);
 
-	stat_delayed_pado--;
+	__sync_sub_and_fetch(&stat_delayed_pado, 1);
 	list_del(&pado->entry);
 
 	if (pado->host_uniq)
@@ -655,7 +655,7 @@ static void pppoe_recv_PADI(struct pppoe_serv_t *serv, uint8_t *pack, int size)
 		triton_timer_add(&serv->ctx, &pado->timer, 0);
 
 		list_add_tail(&pado->entry, &serv->pado_list);
-		stat_delayed_pado++;
+		__sync_add_and_fetch(&stat_delayed_pado, 1);
 	} else
 		pppoe_send_PADO(serv, ethhdr->h_source, host_uniq_tag, relay_sid_tag, service_name_tag);
 }
@@ -756,7 +756,7 @@ static void pppoe_recv_PADR(struct pppoe_serv_t *serv, uint8_t *pack, int size)
 		if (connect_channel(conn))
 			disconnect(conn);
 		else {
-			stat_active++;
+			__sync_add_and_fetch(&stat_active, 1);
 			conn->ppp_started = 1;
 		}
 	}

accel-pptpd/ctrl/pptp/pptp.c

@@ -82,11 +82,11 @@ static void disconnect(struct pptp_conn_t *conn)
 		triton_timer_del(&conn->echo_timer);
 
 	if (conn->state == STATE_PPP) {
-		stat_active--;
+		__sync_sub_and_fetch(&stat_active, 1);
 		conn->state = STATE_CLOSE;
 		ppp_terminate(&conn->ppp, TERM_USER_REQUEST, 1);
 	} else if (conn->state != STATE_CLOSE)
-		stat_starting--;
+		__sync_sub_and_fetch(&stat_starting, 1);
 
 	triton_event_fire(EV_CTRL_FINISHED, &conn->ppp);
 	
@@ -329,8 +329,8 @@ static int pptp_out_call_rqst(struct pptp_conn_t *conn)
 		return -1;
 	}
 	conn->state = STATE_PPP;
-	stat_starting--;
-	stat_active++;
+	__sync_sub_and_fetch(&stat_starting, 1);
+	__sync_add_and_fetch(&stat_active, 1);
 	
 	if (conn->timeout_timer.tpd)
 		triton_timer_del(&conn->timeout_timer);
@@ -367,7 +367,7 @@ static int pptp_call_clear_rqst(struct pptp_conn_t *conn)
 		log_ppp_info("recv [PPTP Call-Clear-Request <Call-ID %x>]\n", ntohs(rqst->call_id));
 
 	if (conn->state == STATE_PPP) {
-		stat_active--;
+		__sync_sub_and_fetch(&stat_active, 1);
 		conn->state = STATE_CLOSE;
 		ppp_terminate(&conn->ppp, TERM_USER_REQUEST, 1);
 	}
@@ -549,7 +549,7 @@ static void pptp_close(struct triton_context_t *ctx)
 {
 	struct pptp_conn_t *conn = container_of(ctx, typeof(*conn), ctx);
 	if (conn->state == STATE_PPP) {
-		stat_active--;
+		__sync_sub_and_fetch(&stat_active, 1);
 		conn->state = STATE_CLOSE;
 		ppp_terminate(&conn->ppp, TERM_ADMIN_RESET, 1);
 		if (send_pptp_call_disconnect_notify(conn, 3)) {
@@ -579,7 +579,7 @@ static void ppp_finished(struct ppp_t *ppp)
 	if (conn->state != STATE_CLOSE) {
 		log_ppp_debug("pptp: ppp finished\n");
 		conn->state = STATE_CLOSE;
-		stat_active--;
+		__sync_sub_and_fetch(&stat_active, 1);
 
 		if (send_pptp_call_disconnect_notify(conn, 3))
 			triton_context_call(&conn->ctx, (void (*)(void*))disconnect, conn);
@@ -667,7 +667,7 @@ static int pptp_connect(struct triton_md_handler_t *h)
 
 		triton_event_fire(EV_CTRL_STARTING, &conn->ppp);
 
-		stat_starting++;
+		__sync_add_and_fetch(&stat_starting, 1);
 	}
 	return 0;
 }

accel-pptpd/log.c

@@ -260,7 +260,7 @@ static struct log_msg_t *clone_msg(struct _log_msg_t *msg)
 	m->timestamp = msg->timestamp;
 	m->level = msg->level;
 
-	msg->refs++;
+	__sync_add_and_fetch(&msg->refs, 1);
 
 	//printf("clone msg %p\n", m);
 	return m;

accel-pptpd/triton/md.c

@@ -86,6 +86,7 @@ static void *md_thread(void *arg)
 				if (!h->pending) {
 					list_add_tail(&h->entry2, &h->ctx->pending_handlers);
 					h->pending = 1;
+					__sync_add_and_fetch(&triton_stat.md_handler_pending, 1);
 					r = triton_queue_ctx(h->ctx);
 				} else
 					r = 0;

accel-pptpd/triton/mempool.c

@@ -84,7 +84,7 @@ void __export *mempool_alloc(mempool_t *pool)
 		list_del(&it->entry);
 		spin_unlock(&p->lock);
 		
-		triton_stat.mempool_available -= size;
+		__sync_sub_and_fetch(&triton_stat.mempool_available, size);
 		
 		it->magic1 = MAGIC1;
 
@@ -106,7 +106,7 @@ void __export *mempool_alloc(mempool_t *pool)
 	it->magic2 = p->magic;
 	*(uint64_t*)(it->data + p->size) = it->magic2;
 
-	triton_stat.mempool_allocated += size;
+	__sync_add_and_fetch(&triton_stat.mempool_allocated, size);
 
 	return it->ptr;
 }
@@ -128,7 +128,7 @@ void __export *mempool_alloc_md(mempool_t *pool, const char *fname, int line)
 		it->fname = fname;
 		it->line = line;
 		
-		triton_stat.mempool_available -= size;
+		__sync_sub_and_fetch(&triton_stat.mempool_available, size);
 		
 		it->magic1 = MAGIC1;
 
@@ -156,7 +156,7 @@ void __export *mempool_alloc_md(mempool_t *pool, const char *fname, int line)
 	list_add(&it->entry, &p->ditems);
 	spin_unlock(&p->lock);
 
-	triton_stat.mempool_allocated += size;
+	__sync_add_and_fetch(&triton_stat.mempool_allocated, size);
 
 	return it->ptr;
 }
@@ -202,7 +202,7 @@ void __export mempool_free(void *ptr)
 		_free(it);
 #endif
 
-	triton_stat.mempool_available += size;
+	__sync_add_and_fetch(&triton_stat.mempool_available, size);
 }
 
 void __export mempool_clean(mempool_t *pool)
@@ -219,8 +219,8 @@ void __export mempool_clean(mempool_t *pool)
 			munmap(it, size);
 		else
 			_free(it);
-		triton_stat.mempool_allocated -= size;
-		triton_stat.mempool_available -= size;
+		__sync_sub_and_fetch(&triton_stat.mempool_allocated, size);
+		__sync_sub_and_fetch(&triton_stat.mempool_available, size);
 	}
 	spin_unlock(&p->lock);
 }
@@ -257,8 +257,8 @@ void sigclean(int num)
 				munmap(it, size);
 			else
 				_free(it);
-			triton_stat.mempool_allocated -= size;
-			triton_stat.mempool_available -= size;
+			__sync_sub_and_fetch(&triton_stat.mempool_allocated, size);
+			__sync_sub_and_fetch(&triton_stat.mempool_available, size);
 		}
 		spin_unlock(&p->lock);
 	}

accel-pptpd/triton/timer.c

@@ -92,6 +92,7 @@ void *timer_thread(void *arg)
 				if (!t->pending) {
 					list_add_tail(&t->entry2, &t->ctx->pending_timers);
 					t->pending = 1;
+					__sync_add_and_fetch(&triton_stat.timer_pending, 1);
 					r = triton_queue_ctx(t->ctx);
 				} else
 					r = 0;

accel-pptpd/triton/triton.c

@@ -62,7 +62,7 @@ static void* triton_thread(struct _triton_thread_t *thread)
 			thread->ctx->thread = thread;
 			thread->ctx->queued = 0;
 			spin_unlock(&thread->ctx->lock);
-			triton_stat.context_pending--;
+			__sync_sub_and_fetch(&triton_stat.context_pending, 1);
 		} else {
 			log_debug2("thread: %p: sleeping\n", thread);
 			if (!terminate)
@@ -71,11 +71,11 @@ static void* triton_thread(struct _triton_thread_t *thread)
 			if (terminate)
 				return NULL;
 
-			triton_stat.thread_active--;
+			__sync_sub_and_fetch(&triton_stat.thread_active, 1);
 			//printf("thread %p: enter sigwait\n", thread);
 			sigwait(&set, &sig);
 			//printf("thread %p: exit sigwait\n", thread);
-			triton_stat.thread_active++;
+			__sync_add_and_fetch(&triton_stat.thread_active, 1);
 
 			if (!thread->ctx)
 				continue;
@@ -141,6 +141,7 @@ static void ctx_thread(struct _triton_context_t *ctx)
 				list_del(&t->entry2);
 				t->pending = 0;
 				spin_unlock(&ctx->lock);
+				__sync_sub_and_fetch(&triton_stat.timer_pending, 1);
 				read(t->fd, &tt, sizeof(tt));
 				t->ud->expire(t->ud);
 				continue;
@@ -150,6 +151,7 @@ static void ctx_thread(struct _triton_context_t *ctx)
 				list_del(&h->entry2);
 				h->pending = 0;
 				spin_unlock(&ctx->lock);
+				__sync_sub_and_fetch(&triton_stat.md_handler_pending, 1);
 				if (h->trig_epoll_events & (EPOLLIN | EPOLLERR | EPOLLHUP))
 					if (h->ud && h->ud->read)
 						if (h->ud->read(h->ud))
@@ -197,8 +199,8 @@ struct _triton_thread_t *create_thread()
 		return NULL;
 	}
 
-	triton_stat.thread_count++;
-	triton_stat.thread_active++;
+	__sync_add_and_fetch(&triton_stat.thread_count, 1);
+	__sync_add_and_fetch(&triton_stat.thread_active, 1);
 
 	return thread;
 }
@@ -218,7 +220,7 @@ int triton_queue_ctx(struct _triton_context_t *ctx)
 		spin_unlock(&threads_lock);
 		ctx->queued = 1;
 		log_debug2("ctx %p: queued\n", ctx);
-		triton_stat.context_pending++;
+		__sync_add_and_fetch(&triton_stat.context_pending, 1);
 		return 0;
 	}
 
@@ -272,8 +274,8 @@ int __export triton_context_register(struct triton_context_t *ud, void *bf_arg)
 	list_add_tail(&ctx->entry, &ctx_list);
 	spin_unlock(&ctx_list_lock);
 
-	triton_stat.context_sleeping++;
-	triton_stat.context_count++;
+	__sync_add_and_fetch(&triton_stat.context_sleeping, 1);
+	__sync_add_and_fetch(&triton_stat.context_count, 1);
 
 	return 0;
 }
@@ -322,7 +324,7 @@ void __export triton_context_unregister(struct triton_context_t *ud)
 		terminate = 1;
 	spin_unlock(&ctx_list_lock);
 	
-	triton_stat.context_count--;
+	__sync_sub_and_fetch(&triton_stat.context_count, 1);
 
 	if (terminate) {
 		list_for_each_entry(t, &threads, entry)
@@ -352,7 +354,7 @@ void __export triton_context_schedule(struct triton_context_t *ud)
 	ctx->thread = NULL;
 	spin_unlock(&ctx->lock);
 
-	triton_stat.context_sleeping++;
+	__sync_add_and_fetch(&triton_stat.context_sleeping, 1);
 
 	log_debug2("ctx %p: enter schedule\n", ctx);
 	if (swapcontext(&ctx->uctx, uctx))
@@ -388,7 +390,7 @@ int __export triton_context_wakeup(struct triton_context_t *ud)
 	if (r)
 		triton_thread_wakeup(ctx->thread);
 	
-	triton_stat.context_sleeping--;
+	__sync_sub_and_fetch(&triton_stat.context_sleeping, 1);
 
 	return 0;
 }