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https://github.com/varun-r-mallya/sysprof.git
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dff4affaab
2005-10-30 Soren Sandmann <sandmann@redhat.com> * Merge stackstash-reorg branch into HEAD
147 lines
3.1 KiB
C
147 lines
3.1 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 "stackstash.h"
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#include "module/sysprof-module.h"
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#include "profile.h"
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#include "process.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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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 = 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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fprintf (stderr, "%s: %s\n", app->outfile, err->message);
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exit (1);
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}
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}
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void
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signal_handler (int signo, 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_iteration (FALSE))
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;
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g_main_loop_quit (app->main_loop);
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}
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#define SYSPROF_FILE "/proc/sysprof-trace"
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static void
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no_module (void)
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{
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perror (SYSPROF_FILE);
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fprintf (stderr,
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"\n"
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"Can't open /proc/sysprof-trace. You need to insert "
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"the sysprof kernel module. Run\n"
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"\n"
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" modprobe sysprof-module\n"
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"\n"
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"as root.\n");
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}
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static void
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usage (const char *name)
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{
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fprintf (stderr,
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"\n"
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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) write the profile to <outfile>\n"
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"\n",
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name);
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}
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int
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main (int argc,
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char *argv[])
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{
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gboolean quit;
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Application *app = g_new0 (Application, 1);
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int fd;
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fd = open (SYSPROF_FILE, O_RDONLY);
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quit = FALSE;
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if (fd < 0)
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{
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no_module ();
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quit = TRUE;
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}
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if (argc < 2)
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{
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usage (argv[0]);
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quit = TRUE;
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}
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if (quit)
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return -1;
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app->collector = collector_new (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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/* FIXME: check the errors */
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signal_set_handler (SIGTERM, signal_handler, app, NULL);
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signal_set_handler (SIGINT, signal_handler, app, NULL);
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/* FIXME: check the error */
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collector_start (app->collector, NULL);
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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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