mirror of
https://github.com/varun-r-mallya/sysprof.git
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152 lines
3.3 KiB
C
152 lines
3.3 KiB
C
/* Sysprof -- Sampling, systemwide CPU profiler
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* Copyright 2005, Lorenzo Colitti
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* Copyright 2005, Soren Sandmann
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <glib.h>
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#include <stdio.h>
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#include "stackstash.h"
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#include "profile.h"
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#include "watch.h"
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#include "signal-handler.h"
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#include "collector.h"
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typedef struct Application Application;
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struct Application
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{
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Collector * collector;
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char * outfile;
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GMainLoop * main_loop;
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};
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static void
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dump_data (Application *app)
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{
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GError *err = NULL;
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Profile *profile;
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printf ("Saving profile (%d samples) in %s ... ",
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collector_get_n_samples (app->collector),
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app->outfile);
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fflush (stdout);
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collector_stop (app->collector);
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profile = collector_create_profile (app->collector);
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profile_save (profile, app->outfile, &err);
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if (err)
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{
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printf ("failed\n");
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fprintf (stderr, "Error saving %s: %s\n", app->outfile, err->message);
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exit (1);
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}
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else
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{
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printf ("done\n\n");
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}
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}
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static void
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signal_handler (int signo,
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gpointer data)
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{
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Application *app = data;
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dump_data (app);
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while (g_main_context_iteration (NULL, FALSE))
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;
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g_main_loop_quit (app->main_loop);
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}
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static char *
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usage_msg (const char *name)
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{
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return g_strdup_printf (
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"Usage: \n"
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" %s <outfile>\n"
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"\n"
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"On SIGTERM or SIGINT (Ctrl-C) the profile will be written to <outfile>",
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name);
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}
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static gboolean
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file_exists_and_is_dir (const char *name)
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{
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return
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g_file_test (name, G_FILE_TEST_EXISTS) &&
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g_file_test (name, G_FILE_TEST_IS_DIR);
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}
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static void
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die (const char *err_msg)
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{
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if (err_msg)
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fprintf (stderr, "\n%s\n\n", err_msg);
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exit (-1);
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}
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int
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main (int argc, char *argv[])
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{
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Application *app = g_new0 (Application, 1);
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GError *err;
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app->collector = collector_new (FALSE, NULL, NULL);
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app->outfile = g_strdup (argv[1]);
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app->main_loop = g_main_loop_new (NULL, 0);
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err = NULL;
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if (!collector_start (app->collector, &err))
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die (err->message);
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if (argc < 2)
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die (usage_msg (argv[0]));
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if (!signal_set_handler (SIGTERM, signal_handler, app, &err))
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die (err->message);
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if (!signal_set_handler (SIGINT, signal_handler, app, &err))
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die (err->message);
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if (file_exists_and_is_dir (app->outfile))
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{
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char *msg = g_strdup_printf ("Can't write to %s: is a directory\n",
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app->outfile);
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die (msg);
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}
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g_main_loop_run (app->main_loop);
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signal_unset_handler (SIGTERM);
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signal_unset_handler (SIGINT);
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return 0;
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}
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