X-Git-Url: https://git.lttng.org/?p=lttngtop.git;a=blobdiff_plain;f=src%2Flttngtop.c;h=a33e1d828ceb57f3248b16a19b8d50366bfed227;hp=8a3416c8dd6bf41659b695a458d2bd52c0c50993;hb=2479719885485a6b991b47898d0c77a63f6b9513;hpb=ae9e85c7301dea169bc50c91d927eccd2c944e92

diff --git a/src/lttngtop.c b/src/lttngtop.c
index 8a3416c..a33e1d8 100644
--- a/src/lttngtop.c
+++ b/src/lttngtop.c
@@ -51,7 +51,8 @@
 #define DEFAULT_FILE_ARRAY_SIZE 1
 
 const char *opt_input_path;
-int opt_textdump;
+static int opt_textdump;
+static int opt_child;
 
 int quit = 0;
 
@@ -70,23 +71,31 @@ struct lttng_consumer_local_data *ctx = NULL;
 /* list of snapshots currently not consumed */
 GPtrArray *available_snapshots;
 sem_t metadata_available;
-FILE *metadata_fp;
-int trace_opened = 0;
-int metadata_ready = 0;
+int reload_trace = 0;
 
 enum {
 	OPT_NONE = 0,
 	OPT_HELP,
 	OPT_TEXTDUMP,
+	OPT_PID,
+	OPT_CHILD,
 };
 
 static struct poptOption long_options[] = {
 	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 	{ "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL },
 	{ "textdump", 't', POPT_ARG_NONE, NULL, OPT_TEXTDUMP, NULL, NULL },
+	{ "child", 'f', POPT_ARG_NONE, NULL, OPT_CHILD, NULL, NULL },
+	{ "pid", 'p', POPT_ARG_INT, &opt_pid, OPT_PID, NULL, NULL },
 	{ NULL, 0, 0, NULL, 0, NULL, NULL },
 };
 
+static void handle_textdump_sigterm(int signal)
+{
+	quit = 1;
+	lttng_destroy_session("test");
+}
+
 void *refresh_thread(void *p)
 {
 	struct mmap_stream *mmap_info;
@@ -95,11 +104,15 @@ void *refresh_thread(void *p)
 		if (quit) {
 			sem_post(&pause_sem);
 			sem_post(&timer);
+			sem_post(&end_trace_sem);
 			sem_post(&goodtodisplay);
+			sem_post(&goodtoupdate);
 			pthread_exit(0);
 		}
-		bt_list_for_each_entry(mmap_info, &mmap_list.head, list)
-			helper_kernctl_buffer_flush(mmap_info->fd);
+		if (!opt_input_path) {
+			bt_list_for_each_entry(mmap_info, &mmap_list.head, list)
+				helper_kernctl_buffer_flush(mmap_info->fd);
+		}
 		sem_wait(&pause_sem);
 		sem_post(&pause_sem);
 		sem_post(&timer);
@@ -124,11 +137,12 @@ void *ncurses_display(void *p)
 		sem_wait(&pause_sem);
 
 		if (quit) {
+			sem_post(&pause_sem);
+			sem_post(&timer);
 			reset_ncurses();
 			pthread_exit(0);
 		}
 
-
 		copy = g_ptr_array_index(copies, current_display_index);
 		assert(copy);
 		display(current_display_index++);
@@ -147,17 +161,39 @@ enum bt_cb_ret print_timestamp(struct bt_ctf_event *call_data, void *private_dat
 	unsigned long timestamp;
 	struct tm start;
 	uint64_t ts_nsec_start;
+	int pid;
+	int64_t syscall_ret;
+	const struct definition *scope;
 
 	timestamp = bt_ctf_get_timestamp(call_data);
 
 	start = format_timestamp(timestamp);
 	ts_nsec_start = timestamp % NSEC_PER_SEC;
 
-	printf("%02d:%02d:%02d.%09" PRIu64 " %s\n", start.tm_hour,
-			start.tm_min, start.tm_sec, ts_nsec_start,
-			bt_ctf_event_name(call_data));
+	pid = get_context_pid(call_data);
+	if (pid == -1ULL && opt_pid) {
+		goto error;
+	}
+	
+	if (opt_pid && opt_pid != pid)
+		goto end;
+
+	if (strcmp(bt_ctf_event_name(call_data), "exit_syscall") == 0) {
+		scope = bt_ctf_get_top_level_scope(call_data,
+				BT_EVENT_FIELDS);
+		syscall_ret = bt_ctf_get_int64(bt_ctf_get_field(call_data,
+					scope, "_ret"));
+		printf("= %ld\n", syscall_ret);
+	} else {
+		printf("%02d:%02d:%02d.%09" PRIu64 " %d : %s ", start.tm_hour,
+				start.tm_min, start.tm_sec, ts_nsec_start,
+				pid, bt_ctf_event_name(call_data));
+	}
 
+end:
 	return BT_CB_OK;
+error:
+	return BT_CB_ERROR_STOP;
 }
 
 /*
@@ -294,7 +330,7 @@ void update_perf_counter(struct processtop *proc, const struct bt_ctf_event *eve
 enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
 		void *private_data)
 {
-	int pid, tid, ppid;
+	int pid, tid, ppid, vpid, vtid, vppid;
 	char *comm;
 	struct processtop *parent, *child;
 	unsigned long timestamp;
@@ -307,6 +343,7 @@ enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
 	if (pid == -1ULL) {
 		goto error;
 	}
+
 	tid = get_context_tid(call_data);
 	if (tid == -1ULL) {
 		goto error;
@@ -315,6 +352,18 @@ enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
 	if (ppid == -1ULL) {
 		goto error;
 	}
+	vpid = get_context_vpid(call_data);
+	if (pid == -1ULL) {
+		vpid = -1;
+	}
+	vtid = get_context_vtid(call_data);
+	if (tid == -1ULL) {
+		vtid = -1;
+	}
+	vppid = get_context_vppid(call_data);
+	if (ppid == -1ULL) {
+		vppid = -1;
+	}
 	comm = get_context_comm(call_data);
 	if (!comm) {
 		goto error;
@@ -324,14 +373,17 @@ enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
 	child = find_process_tid(&lttngtop, tid, comm);
 	if (!child)
 		child = add_proc(&lttngtop, tid, comm, timestamp);
-	update_proc(child, pid, tid, ppid, comm);
+	if (!child)
+		goto end;
+	update_proc(child, pid, tid, ppid, vpid, vtid, vppid, comm);
 
 	if (pid != tid) {
 		/* find or create the parent */
 		parent = find_process_tid(&lttngtop, pid, comm);
 		if (!parent) {
 			parent = add_proc(&lttngtop, pid, comm, timestamp);
-			parent->pid = pid;
+			if (parent)
+				parent->pid = pid;
 		}
 
 		/* attach the parent to the current process */
@@ -341,6 +393,7 @@ enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
 
 	update_perf_counter(child, call_data);
 
+end:
 	return BT_CB_OK;
 
 error:
@@ -397,7 +450,14 @@ static int parse_options(int argc, char **argv)
 				goto end;
 			case OPT_TEXTDUMP:
 				opt_textdump = 1;
-				goto end;
+				break;
+			case OPT_CHILD:
+				opt_textdump = 1;
+				opt_child = 1;
+				break;
+			case OPT_PID:
+				//opt_textdump = 1;
+				break;
 			default:
 				ret = -EINVAL;
 				goto end;
@@ -474,8 +534,8 @@ void iter_trace(struct bt_context *bt_ctx)
 				NULL, NULL, NULL);
 	}
 
-	while (((event = bt_ctf_iter_read_event(iter)) != NULL)) {
-		if (quit)
+	while ((event = bt_ctf_iter_read_event(iter, NULL)) != NULL) {
+		if (quit || reload_trace)
 			goto end_iter;
 		ret = bt_iter_next(bt_ctf_get_iter(iter));
 		if (ret < 0)
@@ -772,6 +832,8 @@ int on_recv_fd(struct lttng_consumer_stream *kconsumerd_fd)
 		ret = 0;
 	}
 
+	reload_trace = 1;
+
 end:
 	return ret;
 }
@@ -779,26 +841,21 @@ end:
 void live_consume(struct bt_context **bt_ctx)
 {
 	int ret;
+	FILE *metadata_fp;
 
-	if (!metadata_ready) {
-		sem_wait(&metadata_available);
-		if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) {
-			fprintf(stderr,"no metadata\n");
-			goto end;
-		}
-		metadata_ready = 1;
-		metadata_fp = fopen("/tmp/livesession/kernel/metadata", "r");
+	sem_wait(&metadata_available);
+	if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) {
+		fprintf(stderr,"no metadata\n");
+		goto end;
 	}
+	metadata_fp = fopen("/tmp/livesession/kernel/metadata", "r");
 
-	if (!trace_opened) {
-		*bt_ctx = bt_context_create();
-		ret = bt_context_add_trace(*bt_ctx, NULL, "ctf",
-				lttngtop_ctf_packet_seek, &mmap_list, metadata_fp);
-		if (ret < 0) {
-			printf("Error adding trace\n");
-			goto end;
-		}
-		trace_opened = 1;
+	*bt_ctx = bt_context_create();
+	ret = bt_context_add_trace(*bt_ctx, NULL, "ctf",
+			lttngtop_ctf_packet_seek, &mmap_list, metadata_fp);
+	if (ret < 0) {
+		printf("Error adding trace\n");
+		goto end;
 	}
 
 end:
@@ -838,7 +895,7 @@ end:
 	return ret;
 }
 
-void *setup_live_tracing()
+int setup_live_tracing()
 {
 	struct lttng_domain dom;
 	struct lttng_channel chan;
@@ -857,7 +914,7 @@ void *setup_live_tracing()
 
 	if ((ret = setup_consumer(command_sock_path, threads, ctx)) < 0) {
 		fprintf(stderr,"error setting up consumer\n");
-		goto end;
+		goto error;
 	}
 
 	available_snapshots = g_ptr_array_new();
@@ -871,25 +928,39 @@ void *setup_live_tracing()
 	if ((ret = lttng_create_session("test", "/tmp/livesession")) < 0) {
 		fprintf(stderr,"error creating the session : %s\n",
 				helper_lttcomm_get_readable_code(ret));
-		goto end;
+		goto error;
 	}
 
 	if ((handle = lttng_create_handle("test", &dom)) == NULL) {
 		fprintf(stderr,"error creating handle\n");
-		goto end;
+		goto error_session;
+	}
+
+	/*
+	 * FIXME : need to let the
+	 * helper_lttng_consumer_thread_receive_fds create the
+	 * socket.
+	 * Cleaner solution ?
+	 */
+	while (access(command_sock_path, F_OK)) {
+		sleep(0.1);
 	}
 
 	if ((ret = lttng_register_consumer(handle, command_sock_path)) < 0) {
 		fprintf(stderr,"error registering consumer : %s\n",
 				helper_lttcomm_get_readable_code(ret));
-		goto end;
+		goto error_session;
 	}
 
 	strcpy(chan.name, channel_name);
 	chan.attr.overwrite = 0;
-//	chan.attr.subbuf_size = 32768;
-	chan.attr.subbuf_size = 1048576; /* 1MB */
-	chan.attr.num_subbuf = 4;
+	if (opt_pid && opt_textdump) {
+		chan.attr.subbuf_size = 32768;
+		chan.attr.num_subbuf = 8;
+	} else {
+		chan.attr.subbuf_size = 1048576; /* 1MB */
+		chan.attr.num_subbuf = 4;
+	}
 	chan.attr.switch_timer_interval = 0;
 	chan.attr.read_timer_interval = 200;
 	chan.attr.output = LTTNG_EVENT_MMAP;
@@ -897,38 +968,46 @@ void *setup_live_tracing()
 	if ((ret = lttng_enable_channel(handle, &chan)) < 0) {
 		fprintf(stderr,"error creating channel : %s\n",
 				helper_lttcomm_get_readable_code(ret));
-		goto end;
+		goto error_session;
 	}
 
 	memset(&ev, '\0', sizeof(struct lttng_event));
 	//sprintf(ev.name, "sched_switch");
-	ev.type = LTTNG_EVENT_TRACEPOINT;
-	if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
-		fprintf(stderr,"error enabling event : %s\n",
-				helper_lttcomm_get_readable_code(ret));
-		goto end;
-	}
+//	if (!opt_pid) {
+		ev.type = LTTNG_EVENT_TRACEPOINT;
+		if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
+			fprintf(stderr,"error enabling event : %s\n",
+					helper_lttcomm_get_readable_code(ret));
+			goto error_session;
+		}
+//	}
 
 	ev.type = LTTNG_EVENT_SYSCALL;
 	if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
 		fprintf(stderr,"error enabling syscalls : %s\n",
 				helper_lttcomm_get_readable_code(ret));
-		goto end;
+		goto error_session;
 	}
 
 	kctxpid.ctx = LTTNG_EVENT_CONTEXT_PID;
 	lttng_add_context(handle, &kctxpid, NULL, NULL);
-	kctxppid.ctx = LTTNG_EVENT_CONTEXT_PPID;
-	lttng_add_context(handle, &kctxppid, NULL, NULL);
-	kctxcomm.ctx = LTTNG_EVENT_CONTEXT_PROCNAME;
-	lttng_add_context(handle, &kctxcomm, NULL, NULL);
 	kctxtid.ctx = LTTNG_EVENT_CONTEXT_TID;
 	lttng_add_context(handle, &kctxtid, NULL, NULL);
+//	if (!opt_pid) {
+		kctxppid.ctx = LTTNG_EVENT_CONTEXT_PPID;
+		lttng_add_context(handle, &kctxppid, NULL, NULL);
+		kctxcomm.ctx = LTTNG_EVENT_CONTEXT_PROCNAME;
+		lttng_add_context(handle, &kctxcomm, NULL, NULL);
+		kctxpid.ctx = LTTNG_EVENT_CONTEXT_VPID;
+		lttng_add_context(handle, &kctxpid, NULL, NULL);
+		kctxtid.ctx = LTTNG_EVENT_CONTEXT_VTID;
+		lttng_add_context(handle, &kctxtid, NULL, NULL);
+//	}
 
 	if ((ret = lttng_start_tracing("test")) < 0) {
 		fprintf(stderr,"error starting tracing : %s\n",
 				helper_lttcomm_get_readable_code(ret));
-		goto end;
+		goto error_session;
 	}
 
 	helper_kernctl_buffer_flush(consumerd_metadata);
@@ -936,14 +1015,20 @@ void *setup_live_tracing()
 	/* block until metadata is ready */
 	sem_init(&metadata_available, 0, 0);
 
-end:
-	return NULL;
+	return 0;
+
+error_session:
+	lttng_destroy_session("test");
+error:
+	return -1;
 }
 
 int main(int argc, char **argv)
 {
 	int ret;
 	struct bt_context *bt_ctx = NULL;
+	struct mmap_stream *mmap_info;
+	unsigned long mmap_len;
 
 	ret = parse_options(argc, argv);
 	if (ret < 0) {
@@ -955,14 +1040,45 @@ int main(int argc, char **argv)
 	}
 
 	if (!opt_input_path) {
-		setup_live_tracing();
+		if (opt_textdump) {
+			signal(SIGTERM, handle_textdump_sigterm);
+			signal(SIGINT, handle_textdump_sigterm);
+		}
+		ret = setup_live_tracing();
+		if (ret < 0) {
+			goto end;
+		}
 		init_lttngtop();
 		if (!opt_textdump) {
 			pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL);
 			pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL);
 		}
-		live_consume(&bt_ctx);
-		iter_trace(bt_ctx);
+		while (!quit) {
+			reload_trace = 0;
+			live_consume(&bt_ctx);
+			iter_trace(bt_ctx);
+			ret = bt_context_remove_trace(bt_ctx, 0);
+			if (ret != 0)
+				fprintf(stderr, "error removing trace\n");
+			if (bt_ctx) {
+				bt_context_put(bt_ctx);
+			}
+
+			/*
+			 * since we receive all FDs every time there is an
+			 * update and the FD number is different every time,
+			 * we don't know which one are valid.
+			 * so we check if all FDs are usable with a simple
+			 * ioctl call.
+			 */
+			bt_list_for_each_entry(mmap_info, &mmap_list.head, list) {
+				ret = helper_kernctl_get_mmap_len(mmap_info->fd, &mmap_len);
+				if (ret != 0) {
+					bt_list_del(&mmap_info->list);
+				}
+			}
+			sem_post(&metadata_available);
+		}
 
 		pthread_join(timer_thread, NULL);
 		quit = 1;