+++ /dev/null
-/*
- * Copyright (c) 2011 David Goulet <david.goulet@polymtl.ca>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * as published by the Free Software Foundation; only version 2
- * of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#define _GNU_SOURCE
-#include <assert.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <time.h>
-
-#include <lttng/lttng.h>
-
-#include "../utils.h"
-
-int lttng_opt_quiet;
-
-int main(int argc, char **argv)
-{
- struct lttng_handle *handle = NULL;
- struct lttng_domain dom;
- struct lttng_channel channel;
- struct lttng_event sched_switch;
- struct lttng_event sched_process_exit;
- struct lttng_event sched_process_free;
- char *session_name = "kernel_event_basic";
- int ret = 0;
-
- memset(&dom, 0, sizeof(dom));
- memset(&channel, 0, sizeof(channel));
- memset(&sched_switch, 0, sizeof(sched_switch));
- memset(&sched_process_exit, 0, sizeof(sched_process_exit));
- memset(&sched_process_free, 0, sizeof(sched_process_free));
-
- dom.type = LTTNG_DOMAIN_KERNEL;
-
- strcpy(channel.name, "mychan");
- channel.attr.overwrite = 0;
- channel.attr.subbuf_size = 4096;
- channel.attr.num_subbuf = 8;
- channel.attr.switch_timer_interval = 0;
- channel.attr.read_timer_interval = 200;
- channel.attr.output = LTTNG_EVENT_SPLICE;
-
- strcpy(sched_switch.name, "sched_switch");
- sched_switch.type = LTTNG_EVENT_TRACEPOINT;
- sched_switch.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
-
- strcpy(sched_process_exit.name, "sched_process_exit");
- sched_process_exit.type = LTTNG_EVENT_TRACEPOINT;
- sched_process_exit.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
-
- strcpy(sched_process_free.name, "sched_process_free");
- sched_process_free.type = LTTNG_EVENT_TRACEPOINT;
- sched_process_free.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
-
- printf("\nTesting tracing kernel events:\n");
- printf("-----------\n");
- /* Check if root */
- if (getuid() != 0) {
- printf("Root access is needed.\nPlease run 'sudo make check' -- Aborting!\n");
- return 0;
- }
-
- if (argc < 2) {
- printf("Missing session trace path\n");
- return 1;
- }
-
- printf("Creating tracing session (%s): ", argv[1]);
- if ((ret = lttng_create_session(session_name, argv[1])) < 0) {
- printf("error creating the session : %s\n", lttng_strerror(ret));
- goto create_fail;
- }
- PRINT_OK();
-
- printf("Creating session handle: ");
- if ((handle = lttng_create_handle(session_name, &dom)) == NULL) {
- printf("error creating handle: %s\n", lttng_strerror(ret));
- goto handle_fail;
- }
- PRINT_OK();
-
- printf("Enabling %s kernel channel: ", channel.name);
- if ((ret = lttng_enable_channel(handle, &channel)) < 0) {
- printf("error enable channel: %s\n", lttng_strerror(ret));
- goto enable_fail;
- }
-
- printf("Enabling %s kernel event: ", sched_switch.name);
- if ((ret = lttng_enable_event(handle, &sched_switch, channel.name)) < 0) {
- printf("error enabling event: %s\n", lttng_strerror(ret));
- goto enable_fail;
- }
- PRINT_OK();
-
- printf("Enabling %s kernel event: ", sched_process_exit.name);
- if ((ret = lttng_enable_event(handle, &sched_process_exit, channel.name)) < 0) {
- printf("error enabling event: %s\n", lttng_strerror(ret));
- goto enable_fail;
- }
- PRINT_OK();
-
- printf("Enabling %s kernel event: ", sched_process_free.name);
- if ((ret = lttng_enable_event(handle, &sched_process_free, channel.name)) < 0) {
- printf("error enabling event: %s\n", lttng_strerror(ret));
- goto enable_fail;
- }
- PRINT_OK();
-
- printf("Disabling %s kernel event: ", sched_switch.name);
- if ((ret = lttng_disable_event(handle, sched_switch.name, channel.name)) < 0) {
- printf("error enabling event: %s\n", lttng_strerror(ret));
- goto enable_fail;
- }
- PRINT_OK();
-
- printf("Disabling %s kernel event: ", sched_process_free.name);
- if ((ret = lttng_disable_event(handle, sched_process_free.name, channel.name)) < 0) {
- printf("error enabling event: %s\n", lttng_strerror(ret));
- goto enable_fail;
- }
- PRINT_OK();
-
- printf("Renabling %s kernel event: ", sched_switch.name);
- if ((ret = lttng_enable_event(handle, &sched_switch, channel.name)) < 0) {
- printf("error enabling event: %s\n", lttng_strerror(ret));
- goto enable_fail;
- }
- PRINT_OK();
-
- printf("Renabling %s kernel event: ", sched_process_free.name);
- if ((ret = lttng_enable_event(handle, &sched_process_free, channel.name)) < 0) {
- printf("error enabling event: %s\n", lttng_strerror(ret));
- goto enable_fail;
- }
- PRINT_OK();
-
- printf("Start tracing: ");
- if ((ret = lttng_start_tracing(session_name)) < 0) {
- printf("error starting tracing: %s\n", lttng_strerror(ret));
- goto start_fail;
- }
- PRINT_OK();
-
- sleep(2);
-
- printf("Stop tracing: ");
- if ((ret = lttng_stop_tracing(session_name)) < 0) {
- printf("error stopping tracing: %s\n", lttng_strerror(ret));
- goto stop_fail;
- }
- PRINT_OK();
-
- printf("Destroy tracing session: ");
- if ((ret = lttng_destroy_session(session_name)) < 0) {
- printf("error destroying session: %s\n", lttng_strerror(ret));
- }
- PRINT_OK();
-
- return 0;
-
-create_fail:
- assert(ret != 0);
-handle_fail:
- assert(handle != NULL);
-
-stop_fail:
-start_fail:
-enable_fail:
- lttng_destroy_session(session_name);
- lttng_destroy_handle(handle);
-
- return 1;
-}
projects / lttng-tools.git / blobdiff