X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=ltt-sessiond%2Fmain.c;h=16067d354b7581d408b2bc2b9f08f804ed3911ee;hb=42b06fc206202e96e260f2870ccc12eeefaac7b1;hp=825fa4371cb67b0316fcf9ce8b6e677dd1f0f115;hpb=44d3bd014f6ad217cff7e7c3dfaad76b1927c37b;p=lttng-tools.git

diff --git a/ltt-sessiond/main.c b/ltt-sessiond/main.c
index 825fa4371..16067d354 100644
--- a/ltt-sessiond/main.c
+++ b/ltt-sessiond/main.c
@@ -55,6 +55,8 @@
 #include "utils.h"
 #include "ust-ctl.h"
 
+#include "benchmark.h"
+
 /* Const values */
 const char default_home_dir[] = DEFAULT_HOME_DIR;
 const char default_tracing_group[] = LTTNG_DEFAULT_TRACING_GROUP;
@@ -358,6 +360,24 @@ static void cleanup(void)
 
 	close(thread_quit_pipe[0]);
 	close(thread_quit_pipe[1]);
+
+	/* OUTPUT BENCHMARK RESULTS */
+	bench_init();
+
+	if (getenv("BENCH_UST_NOTIFY")) {
+		bench_print_ust_notification();
+	}
+
+	if (getenv("BENCH_UST_REGISTER")) {
+		bench_print_ust_register();
+	}
+
+	if (getenv("BENCH_BOOT_PROCESS")) {
+		bench_print_boot_process();
+	}
+
+	bench_close();
+	/* END BENCHMARK */
 }
 
 /*
@@ -522,6 +542,8 @@ static int notify_ust_apps(int active)
 
 	DBG("Notifying applications of session daemon state: %d", active);
 
+	tracepoint(ust_notify_apps_start);
+
 	/* See shm.c for this call implying mmap, shm and futex calls */
 	wait_shm_mmap = shm_ust_get_mmap(wait_shm_path, is_root);
 	if (wait_shm_mmap == NULL) {
@@ -531,6 +553,8 @@ static int notify_ust_apps(int active)
 	/* Wake waiting process */
 	futex_wait_update((int32_t *) wait_shm_mmap, active);
 
+	tracepoint(ust_notify_apps_stop);
+
 	/* Apps notified successfully */
 	return 0;
 
@@ -687,6 +711,8 @@ static void *thread_manage_kernel(void *data)
 	char tmp;
 	struct lttng_poll_event events;
 
+	tracepoint(sessiond_th_kern_start);
+
 	DBG("Thread manage kernel started");
 
 	ret = create_thread_poll_set(&events, 2);
@@ -715,6 +741,8 @@ static void *thread_manage_kernel(void *data)
 		/* Zeroed the poll events */
 		lttng_poll_reset(&events);
 
+		tracepoint(sessiond_th_kern_poll);
+
 		/* Poll infinite value of time */
 		ret = lttng_poll_wait(&events, -1);
 		if (ret < 0) {
@@ -782,6 +810,8 @@ static void *thread_manage_kconsumerd(void *data)
 	enum lttcomm_return_code code;
 	struct lttng_poll_event events;
 
+	tracepoint(sessiond_th_kcon_start);
+
 	DBG("[thread] Manage kconsumerd started");
 
 	ret = lttcomm_listen_unix_sock(kconsumerd_err_sock);
@@ -805,6 +835,8 @@ static void *thread_manage_kconsumerd(void *data)
 
 	nb_fd = LTTNG_POLL_GETNB(&events);
 
+	tracepoint(sessiond_th_kcon_poll);
+
 	/* Inifinite blocking call, waiting for transmission */
 	ret = lttng_poll_wait(&events, -1);
 	if (ret < 0) {
@@ -935,6 +967,8 @@ static void *thread_manage_apps(void *data)
 	struct ust_command ust_cmd;
 	struct lttng_poll_event events;
 
+	tracepoint(sessiond_th_apps_start);
+
 	DBG("[thread] Manage application started");
 
 	ret = create_thread_poll_set(&events, 2);
@@ -955,6 +989,8 @@ static void *thread_manage_apps(void *data)
 
 		DBG("Apps thread polling on %d fds", nb_fd);
 
+		tracepoint(sessiond_th_apps_poll);
+
 		/* Inifinite blocking call, waiting for transmission */
 		ret = lttng_poll_wait(&events, -1);
 		if (ret < 0) {
@@ -978,13 +1014,16 @@ static void *thread_manage_apps(void *data)
 					ERR("Apps command pipe error");
 					goto error;
 				} else if (revents & LPOLLIN) {
+					tracepoint(ust_register_read_start);
 					/* Empty pipe */
 					ret = read(apps_cmd_pipe[0], &ust_cmd, sizeof(ust_cmd));
 					if (ret < 0 || ret < sizeof(ust_cmd)) {
 						perror("read apps cmd pipe");
 						goto error;
 					}
+					tracepoint(ust_register_read_stop);
 
+					tracepoint(ust_register_add_start);
 					/* Register applicaton to the session daemon */
 					ret = register_traceable_app(&ust_cmd.reg_msg,
 							ust_cmd.sock);
@@ -992,7 +1031,9 @@ static void *thread_manage_apps(void *data)
 						/* Only critical ENOMEM error can be returned here */
 						goto error;
 					}
+					tracepoint(ust_register_add_stop);
 
+					tracepoint(ust_register_done_start);
 					ret = ustctl_register_done(ust_cmd.sock);
 					if (ret < 0) {
 						/*
@@ -1013,6 +1054,7 @@ static void *thread_manage_apps(void *data)
 						DBG("Apps with sock %d added to poll set",
 								ust_cmd.sock);
 					}
+					tracepoint(ust_register_done_stop);
 					break;
 				}
 			} else {
@@ -1055,6 +1097,8 @@ static void *thread_dispatch_ust_registration(void *data)
 	struct cds_wfq_node *node;
 	struct ust_command *ust_cmd = NULL;
 
+	tracepoint(sessiond_th_dispatch_start);
+
 	DBG("[thread] Dispatch UST command started");
 
 	while (!dispatch_thread_exit) {
@@ -1062,6 +1106,8 @@ static void *thread_dispatch_ust_registration(void *data)
 		futex_nto1_prepare(&ust_cmd_queue.futex);
 
 		do {
+			tracepoint(sessiond_th_dispatch_block);
+
 			/* Dequeue command for registration */
 			node = cds_wfq_dequeue_blocking(&ust_cmd_queue.queue);
 			if (node == NULL) {
@@ -1070,6 +1116,8 @@ static void *thread_dispatch_ust_registration(void *data)
 				break;
 			}
 
+			tracepoint(ust_dispatch_register_start);
+
 			ust_cmd = caa_container_of(node, struct ust_command, node);
 
 			DBG("Dispatching UST registration pid:%d ppid:%d uid:%d"
@@ -1100,6 +1148,8 @@ static void *thread_dispatch_ust_registration(void *data)
 			free(ust_cmd);
 		} while (node != NULL);
 
+		tracepoint(ust_dispatch_register_stop);
+
 		/* Futex wait on queue. Blocking call on futex() */
 		futex_nto1_wait(&ust_cmd_queue.futex);
 	}
@@ -1123,6 +1173,8 @@ static void *thread_registration_apps(void *data)
 	 */
 	struct ust_command *ust_cmd = NULL;
 
+	tracepoint(sessiond_th_reg_start);
+
 	DBG("[thread] Manage application registration started");
 
 	ret = lttcomm_listen_unix_sock(apps_sock);
@@ -1156,6 +1208,8 @@ static void *thread_registration_apps(void *data)
 	while (1) {
 		DBG("Accepting application registration");
 
+		tracepoint(sessiond_th_reg_poll);
+
 		nb_fd = LTTNG_POLL_GETNB(&events);
 
 		/* Inifinite blocking call, waiting for transmission */
@@ -1181,6 +1235,9 @@ static void *thread_registration_apps(void *data)
 					ERR("Register apps socket poll error");
 					goto error;
 				} else if (revents & LPOLLIN) {
+					/* Registration starts here. Recording cycles */
+					tracepoint(ust_register_start);
+
 					sock = lttcomm_accept_unix_sock(apps_sock);
 					if (sock < 0) {
 						goto error;
@@ -1230,6 +1287,8 @@ static void *thread_registration_apps(void *data)
 					 * barrier with the exchange in cds_wfq_enqueue.
 					 */
 					futex_nto1_wake(&ust_cmd_queue.futex);
+
+					tracepoint(ust_register_stop);
 				}
 			}
 		}
@@ -2668,14 +2727,18 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
 	}
 	case LTTNG_CREATE_SESSION:
 	{
+		tracepoint(create_session_start);
 		ret = cmd_create_session(cmd_ctx->lsm->session.name,
 				cmd_ctx->lsm->session.path);
+		tracepoint(create_session_end);
 		break;
 	}
 	case LTTNG_DESTROY_SESSION:
 	{
+		tracepoint(destroy_session_start);
 		ret = cmd_destroy_session(cmd_ctx->session,
 				cmd_ctx->lsm->session.name);
+		tracepoint(destroy_session_end);
 		break;
 	}
 	case LTTNG_LIST_DOMAINS:
@@ -2824,6 +2887,8 @@ static void *thread_manage_clients(void *data)
 	struct command_ctx *cmd_ctx = NULL;
 	struct lttng_poll_event events;
 
+	tracepoint(sessiond_th_cli_start);
+
 	DBG("[thread] Manage client started");
 
 	ret = lttcomm_listen_unix_sock(client_sock);
@@ -2856,6 +2921,8 @@ static void *thread_manage_clients(void *data)
 	while (1) {
 		DBG("Accepting client command ...");
 
+		tracepoint(sessiond_th_cli_poll);
+
 		nb_fd = LTTNG_POLL_GETNB(&events);
 
 		/* Inifinite blocking call, waiting for transmission */
@@ -3370,6 +3437,8 @@ int main(int argc, char **argv)
 	void *status;
 	const char *home_path;
 
+	tracepoint(sessiond_boot_start);
+
 	/* Create thread quit pipe */
 	if ((ret = init_thread_quit_pipe()) < 0) {
 		goto error;
@@ -3558,6 +3627,8 @@ int main(int argc, char **argv)
 		goto exit_kernel;
 	}
 
+	tracepoint(sessiond_boot_end);
+
 	ret = pthread_join(kernel_thread, &status);
 	if (ret != 0) {
 		perror("pthread_join");