X-Git-Url: https://git.lttng.org/?p=lttngtop.git;a=blobdiff_plain;f=src%2Flttngtop.c;h=ae10e9fbe3ebd74480f7c6fd8a9eee1c765c462c;hp=a33e1d828ceb57f3248b16a19b8d50366bfed227;hb=246d59926e23f5cdf6f017ae7544f2582b666ef7;hpb=2479719885485a6b991b47898d0c77a63f6b9513

diff --git a/src/lttngtop.c b/src/lttngtop.c
index a33e1d8..ae10e9f 100644
--- a/src/lttngtop.c
+++ b/src/lttngtop.c
@@ -73,12 +73,15 @@ GPtrArray *available_snapshots;
 sem_t metadata_available;
 int reload_trace = 0;
 
+int last_textdump_print_newline = 1;
+
 enum {
 	OPT_NONE = 0,
 	OPT_HELP,
 	OPT_TEXTDUMP,
 	OPT_PID,
 	OPT_CHILD,
+	OPT_HOSTNAME,
 };
 
 static struct poptOption long_options[] = {
@@ -86,7 +89,8 @@ static struct poptOption long_options[] = {
 	{ "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 },
+	{ "pid", 'p', POPT_ARG_STRING, &opt_tid, OPT_PID, NULL, NULL },
+	{ "hostname", 'n', POPT_ARG_STRING, &opt_hostname, OPT_HOSTNAME, NULL, NULL },
 	{ NULL, 0, 0, NULL, 0, NULL, NULL },
 };
 
@@ -152,6 +156,37 @@ void *ncurses_display(void *p)
 	}
 }
 
+void print_fields(struct bt_ctf_event *event)
+{
+	unsigned int cnt, i;
+	const struct definition *const * list;
+	const struct definition *scope;
+	enum ctf_type_id type;
+	const char *str;
+
+	scope = bt_ctf_get_top_level_scope(event, BT_EVENT_FIELDS);
+
+	bt_ctf_get_field_list(event, scope, &list, &cnt);
+	for (i = 0; i < cnt; i++) {
+		if (i != 0)
+			printf(", ");
+		printf("%s = ", bt_ctf_field_name(list[i]));
+		type = bt_ctf_field_type(list[i]);
+		if (type == CTF_TYPE_INTEGER) {
+			if (bt_ctf_get_int_signedness(list[i]) == 0)
+				printf("%" PRIu64 "", bt_ctf_get_uint64(list[i]));
+			else
+				printf("%" PRId64 "", bt_ctf_get_int64(list[i]));
+		} else if (type == CTF_TYPE_STRING) {
+			printf("%s", bt_ctf_get_string(list[i]));
+		} else if (type == CTF_TYPE_ARRAY) {
+			str = bt_ctf_get_char_array(list[i]);
+			if (!bt_ctf_field_get_error() && str)
+				printf("%s", str);
+		}
+	}
+}
+
 /*
  * hook on each event to check the timestamp and refresh the display if
  * necessary
@@ -161,9 +196,10 @@ 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;
+	int pid, cpu_id;
 	int64_t syscall_ret;
 	const struct definition *scope;
+	const char *hostname, *procname;
 
 	timestamp = bt_ctf_get_timestamp(call_data);
 
@@ -171,23 +207,46 @@ enum bt_cb_ret print_timestamp(struct bt_ctf_event *call_data, void *private_dat
 	ts_nsec_start = timestamp % NSEC_PER_SEC;
 
 	pid = get_context_pid(call_data);
-	if (pid == -1ULL && opt_pid) {
+	if (pid == -1ULL && opt_tid) {
 		goto error;
 	}
 	
-	if (opt_pid && opt_pid != pid)
+	hostname = get_context_hostname(call_data);
+	if (!opt_tid && (opt_hostname && !lookup_hostname_list(hostname)))
+		goto end;
+	if (!opt_hostname && (opt_tid && !lookup_tid_list(pid)))
+		goto end;
+	if ((opt_tid && !lookup_tid_list(pid)) &&
+			(opt_hostname && !lookup_hostname_list(hostname)))
 		goto end;
 
-	if (strcmp(bt_ctf_event_name(call_data), "exit_syscall") == 0) {
+	cpu_id = get_cpu_id(call_data);
+	procname = get_context_comm(call_data);
+
+	if ((strcmp(bt_ctf_event_name(call_data), "exit_syscall") == 0) && !last_textdump_print_newline) {
 		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);
+		last_textdump_print_newline = 1;
 	} 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));
+		/* we might have lost the exit_syscall event, so need to
+		 * print the newline in this case */
+		if (last_textdump_print_newline == 0)
+			printf("\n");
+		printf("%02d:%02d:%02d.%09" PRIu64 " (%s) (cpu %d) [%s (%d)] %s (",
+				start.tm_hour, start.tm_min, start.tm_sec,
+				ts_nsec_start, hostname, cpu_id, procname, pid,
+				bt_ctf_event_name(call_data));
+		print_fields(call_data);
+		printf(") ");
+		if (strncmp(bt_ctf_event_name(call_data), "sys_", 4) != 0) {
+			printf("\n");
+			last_textdump_print_newline = 1;
+		} else {
+			last_textdump_print_newline = 0;
+		}
 	}
 
 end:
@@ -196,6 +255,22 @@ error:
 	return BT_CB_ERROR_STOP;
 }
 
+enum bt_cb_ret handle_kprobes(struct bt_ctf_event *call_data, void *private_data)
+{
+	int i;
+	struct kprobes *kprobe;
+
+	/* for kprobes */
+	for (i = 0; i < lttngtop.kprobes_table->len; i++) {
+		kprobe = g_ptr_array_index(lttngtop.kprobes_table, i);
+		if (strcmp(bt_ctf_event_name(call_data), kprobe->probe_name) == 0) {
+			kprobe->count++;
+		}
+	}
+
+	return BT_CB_OK;
+}
+
 /*
  * hook on each event to check the timestamp and refresh the display if
  * necessary
@@ -331,7 +406,7 @@ enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
 		void *private_data)
 {
 	int pid, tid, ppid, vpid, vtid, vppid;
-	char *comm;
+	char *comm, *hostname;
 	struct processtop *parent, *child;
 	unsigned long timestamp;
 
@@ -368,6 +443,8 @@ enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
 	if (!comm) {
 		goto error;
 	}
+	/* optional */
+	hostname = get_context_hostname(call_data);
 
 	/* find or create the current process */
 	child = find_process_tid(&lttngtop, tid, comm);
@@ -375,7 +452,7 @@ enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
 		child = add_proc(&lttngtop, tid, comm, timestamp);
 	if (!child)
 		goto end;
-	update_proc(child, pid, tid, ppid, vpid, vtid, vppid, comm);
+	update_proc(child, pid, tid, ppid, vpid, vtid, vppid, comm, hostname);
 
 	if (pid != tid) {
 		/* find or create the parent */
@@ -422,12 +499,19 @@ void init_lttngtop()
 	lttngtop.process_table = g_ptr_array_new();
 	lttngtop.files_table = g_ptr_array_new();
 	lttngtop.cpu_table = g_ptr_array_new();
+	lttngtop.kprobes_table = g_ptr_array_new();
 }
 
 void usage(FILE *fp)
 {
 	fprintf(fp, "LTTngTop %s\n\n", VERSION);
-	fprintf(fp, "Usage : lttngtop /path/to/trace\n");
+	fprintf(fp, "Usage : lttngtop [OPTIONS] [TRACE]\n");
+	fprintf(fp, "  TRACE			Path to the trace to analyse (no trace path for live tracing)\n");
+	fprintf(fp, "  -h, --help               This help message\n");
+	fprintf(fp, "  -t, --textdump           Display live events in text-only\n");
+	fprintf(fp, "  -p, --pid                Comma-separated list of PIDs to display\n");
+	fprintf(fp, "  -f, --child              Follow threads associated with selected PIDs\n");
+	fprintf(fp, "  -n, --hostname           Comma-separated list of hostnames to display (require hostname context in trace)\n");
 }
 
 /*
@@ -438,6 +522,8 @@ static int parse_options(int argc, char **argv)
 {
 	poptContext pc;
 	int opt, ret = 0;
+	char *tmp_str;
+	int *tid;
 
 	pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0);
 	poptReadDefaultConfig(pc, 0);
@@ -456,7 +542,28 @@ static int parse_options(int argc, char **argv)
 				opt_child = 1;
 				break;
 			case OPT_PID:
-				//opt_textdump = 1;
+				tid_list = g_hash_table_new(g_str_hash,
+						g_str_equal);
+				tmp_str = strtok(opt_tid, ",");
+				while (tmp_str) {
+					tid = malloc(sizeof(int));
+					*tid = atoi(tmp_str);
+					g_hash_table_insert(tid_list,
+							(gpointer) tid, tid);
+					tmp_str = strtok(NULL, ",");
+				}
+				break;
+			case OPT_HOSTNAME:
+				hostname_list = g_hash_table_new(g_str_hash,
+						g_str_equal);
+				tmp_str = strtok(opt_hostname, ",");
+				while (tmp_str) {
+					char *new_str = strdup(tmp_str);
+					g_hash_table_insert(hostname_list,
+							(gpointer) new_str,
+							(gpointer) new_str);
+					tmp_str = strtok(NULL, ",");
+				}
 				break;
 			default:
 				ret = -EINVAL;
@@ -477,7 +584,9 @@ void iter_trace(struct bt_context *bt_ctx)
 {
 	struct bt_ctf_iter *iter;
 	struct bt_iter_pos begin_pos;
+	struct kprobes *kprobe;
 	const struct bt_ctf_event *event;
+	int i;
 	int ret = 0;
 
 	begin_pos.type = BT_SEEK_BEGIN;
@@ -532,9 +641,19 @@ void iter_trace(struct bt_context *bt_ctx)
 					"lttng_statedump_file_descriptor"),
 				NULL, 0, handle_statedump_file_descriptor,
 				NULL, NULL, NULL);
+
+		/* for kprobes */
+		for (i = 0; i < lttngtop.kprobes_table->len; i++) {
+			kprobe = g_ptr_array_index(lttngtop.kprobes_table, i);
+			bt_ctf_iter_add_callback(iter,
+					g_quark_from_static_string(
+						kprobe->probe_name),
+					NULL, 0, handle_kprobes,
+					NULL, NULL, NULL);
+		}
 	}
 
-	while ((event = bt_ctf_iter_read_event(iter, NULL)) != NULL) {
+	while ((event = bt_ctf_iter_read_event(iter)) != NULL) {
 		if (quit || reload_trace)
 			goto end_iter;
 		ret = bt_iter_next(bt_ctf_get_iter(iter));
@@ -895,6 +1014,49 @@ end:
 	return ret;
 }
 
+int enable_kprobes(struct lttng_handle *handle, char *channel_name)
+{
+	struct lttng_event ev;
+	struct kprobes *kprobe;
+	int ret = 0;
+	int i;
+
+	/*
+	kprobe = g_new0(struct kprobes, 1);
+	kprobe->probe_addr = 0;
+	kprobe->probe_offset = 0;
+	asprintf(&kprobe->probe_name, "probe_sys_open");
+	asprintf(&kprobe->symbol_name, "sys_open");
+	g_ptr_array_add(lttngtop.kprobes_table, kprobe);
+
+	kprobe = g_new0(struct kprobes, 1);
+	kprobe->probe_addr = 0;
+	kprobe->probe_offset = 0;
+	asprintf(&kprobe->probe_name, "probe_sys_close");
+	asprintf(&kprobe->symbol_name, "sys_close");
+	g_ptr_array_add(lttngtop.kprobes_table, kprobe);
+	*/
+
+	for (i = 0; i < lttngtop.kprobes_table->len; i++) {
+		kprobe = g_ptr_array_index(lttngtop.kprobes_table, i);
+
+		memset(&ev, '\0', sizeof(struct lttng_event));
+		ev.type = LTTNG_EVENT_PROBE;
+		sprintf(ev.attr.probe.symbol_name, "%s", kprobe->symbol_name);
+		sprintf(ev.name, "%s", kprobe->probe_name);
+		ev.attr.probe.addr = kprobe->probe_addr;
+		ev.attr.probe.offset = kprobe->probe_offset;
+		if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
+			fprintf(stderr,"error enabling kprobes : %s\n",
+					helper_lttcomm_get_readable_code(ret));
+			goto end;
+		}
+	}
+
+end:
+	return ret;
+}
+
 int setup_live_tracing()
 {
 	struct lttng_domain dom;
@@ -954,7 +1116,7 @@ int setup_live_tracing()
 
 	strcpy(chan.name, channel_name);
 	chan.attr.overwrite = 0;
-	if (opt_pid && opt_textdump) {
+	if (opt_tid && opt_textdump) {
 		chan.attr.subbuf_size = 32768;
 		chan.attr.num_subbuf = 8;
 	} else {
@@ -973,15 +1135,14 @@ int setup_live_tracing()
 
 	memset(&ev, '\0', sizeof(struct lttng_event));
 	//sprintf(ev.name, "sched_switch");
-//	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_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;
+	}
 
+	memset(&ev, '\0', sizeof(struct lttng_event));
 	ev.type = LTTNG_EVENT_SYSCALL;
 	if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
 		fprintf(stderr,"error enabling syscalls : %s\n",
@@ -989,20 +1150,25 @@ int setup_live_tracing()
 		goto error_session;
 	}
 
+	ret = enable_kprobes(handle, channel_name);
+	if (ret < 0) {
+		goto error_session;
+	}
+
 	kctxpid.ctx = LTTNG_EVENT_CONTEXT_PID;
 	lttng_add_context(handle, &kctxpid, 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);
-//	}
+	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);
+	kctxtid.ctx = LTTNG_EVENT_CONTEXT_HOSTNAME;
+	lttng_add_context(handle, &kctxtid, NULL, NULL);
 
 	if ((ret = lttng_start_tracing("test")) < 0) {
 		fprintf(stderr,"error starting tracing : %s\n",
@@ -1044,11 +1210,11 @@ int main(int argc, char **argv)
 			signal(SIGTERM, handle_textdump_sigterm);
 			signal(SIGINT, handle_textdump_sigterm);
 		}
+		init_lttngtop();
 		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);