gecko/toolkit/xre/nsSigHandlers.cpp

292 lines
8.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Jerry.Kirk@Nexwarecorp.com
* Chris Seawood <cls@seawood.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* This module is supposed to abstract signal handling away from the other
* platforms that do not support it.
*/
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include "prthread.h"
#include "plstr.h"
#include "prenv.h"
#include "nsDebug.h"
#if defined(LINUX)
#include <sys/time.h>
#include <sys/resource.h>
#include <unistd.h>
#include <stdlib.h> // atoi
#endif
#if defined(SOLARIS)
#include <sys/resource.h>
#endif
#ifdef XP_BEOS
#include <be/app/Application.h>
#include <string.h>
#include "nsCOMPtr.h"
#include "nsIServiceManager.h"
#include "nsIAppStartup.h"
#include "nsXPFEComponentsCID.h"
#endif
#ifdef MOZ_WIDGET_PHOTON
#include <photon/PhProto.h>
#endif
static char _progname[1024] = "huh?";
static unsigned int _gdb_sleep_duration = 300;
#if defined(LINUX) && defined(DEBUG) && \
(defined(__i386) || defined(__x86_64) || defined(PPC))
#define CRAWL_STACK_ON_SIGSEGV
#endif
#ifdef MOZ_WIDGET_PHOTON
void abnormal_exit_handler(int signum)
{
/* Free any shared memory that has been allocated */
PgShmemCleanup();
#if defined(DEBUG)
if ( (signum == SIGSEGV)
|| (signum == SIGILL)
|| (signum == SIGABRT)
|| (signum == SIGFPE)
)
{
printf("prog = %s\npid = %d\nsignal = %s\n",
_progname, getpid(), strsignal(signum));
printf("Sleeping for %d seconds.\n",_gdb_sleep_duration);
printf("Type 'gdb %s %d' to attach your debugger to this thread.\n",
_progname, getpid());
sleep(_gdb_sleep_duration);
printf("Done sleeping...\n");
}
#endif
_exit(1);
}
#elif defined(CRAWL_STACK_ON_SIGSEGV)
#include <unistd.h>
#include "nsISupportsUtils.h"
#include "nsStackWalk.h"
extern "C" {
static void PrintStackFrame(void *aPC, void *aClosure)
{
char buf[1024];
nsCodeAddressDetails details;
NS_DescribeCodeAddress(aPC, &details);
NS_FormatCodeAddressDetails(aPC, &details, buf, sizeof(buf));
fputs(buf, stdout);
}
}
void
ah_crap_handler(int signum)
{
printf("\nProgram %s (pid = %d) received signal %d.\n",
_progname,
getpid(),
signum);
printf("Stack:\n");
NS_StackWalk(PrintStackFrame, 2, nsnull);
printf("Sleeping for %d seconds.\n",_gdb_sleep_duration);
printf("Type 'gdb %s %d' to attach your debugger to this thread.\n",
_progname,
getpid());
sleep(_gdb_sleep_duration);
printf("Done sleeping...\n");
_exit(signum);
}
#endif // CRAWL_STACK_ON_SIGSEGV
#ifdef XP_BEOS
void beos_signal_handler(int signum) {
#ifdef DEBUG
fprintf(stderr, "beos_signal_handler: %d\n", signum);
#endif
nsresult rv;
nsCOMPtr<nsIAppStartup> appStartup(do_GetService(NS_APPSTARTUP_CONTRACTID, &rv));
if (NS_FAILED(rv)) {
// Failed to get the appstartup service so shutdown the hard way
#ifdef DEBUG
fprintf(stderr, "beos_signal_handler: appShell->do_GetService() failed\n");
#endif
exit(13);
}
// Exit the appshell so that the app can shutdown normally
appStartup->Quit(nsIAppStartup::eAttemptQuit);
}
#endif
#ifdef MOZ_WIDGET_GTK2
// Need this include for version test below.
#include <glib.h>
#endif
#if defined(MOZ_WIDGET_GTK2) && (GLIB_MAJOR_VERSION > 2 || (GLIB_MAJOR_VERSION == 2 && GLIB_MINOR_VERSION >= 6))
static GLogFunc orig_log_func = NULL;
extern "C" {
static void
my_glib_log_func(const gchar *log_domain, GLogLevelFlags log_level,
const gchar *message, gpointer user_data);
}
/* static */ void
my_glib_log_func(const gchar *log_domain, GLogLevelFlags log_level,
const gchar *message, gpointer user_data)
{
if (log_level & (G_LOG_LEVEL_ERROR | G_LOG_FLAG_FATAL | G_LOG_FLAG_RECURSION)) {
NS_DebugBreak(NS_DEBUG_ASSERTION, message, "glib assertion", __FILE__, __LINE__);
} else if (log_level & (G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING)) {
NS_DebugBreak(NS_DEBUG_WARNING, message, "glib warning", __FILE__, __LINE__);
}
orig_log_func(log_domain, log_level, message, NULL);
}
#endif
void InstallUnixSignalHandlers(const char *ProgramName)
{
PL_strncpy(_progname,ProgramName, (sizeof(_progname)-1) );
const char *gdbSleep = PR_GetEnv("MOZ_GDB_SLEEP");
if (gdbSleep && *gdbSleep)
{
unsigned int s;
if (1 == sscanf(gdbSleep, "%u", &s)) {
_gdb_sleep_duration = s;
}
}
#if defined(MOZ_WIDGET_PHOTON)
/* Neutrino need this to free shared memory in case of a crash */
signal(SIGTERM, abnormal_exit_handler);
signal(SIGQUIT, abnormal_exit_handler);
signal(SIGINT, abnormal_exit_handler);
signal(SIGHUP, abnormal_exit_handler);
signal(SIGSEGV, abnormal_exit_handler);
signal(SIGILL, abnormal_exit_handler);
signal(SIGABRT, abnormal_exit_handler);
signal(SIGFPE, abnormal_exit_handler);
#elif defined(CRAWL_STACK_ON_SIGSEGV)
signal(SIGSEGV, ah_crap_handler);
signal(SIGILL, ah_crap_handler);
signal(SIGABRT, ah_crap_handler);
signal(SIGFPE, ah_crap_handler);
#endif // CRAWL_STACK_ON_SIGSEGV
#if defined(DEBUG) && defined(LINUX)
const char *memLimit = PR_GetEnv("MOZ_MEM_LIMIT");
if (memLimit && *memLimit)
{
long m = atoi(memLimit);
m *= (1024*1024);
struct rlimit r;
r.rlim_cur = m;
r.rlim_max = m;
setrlimit(RLIMIT_AS, &r);
}
#endif
#if defined(SOLARIS)
#define NOFILES 512
// Boost Solaris file descriptors
{
struct rlimit rl;
if (getrlimit(RLIMIT_NOFILE, &rl) == 0)
if (rl.rlim_cur < NOFILES) {
rl.rlim_cur = NOFILES;
if (setrlimit(RLIMIT_NOFILE, &rl) < 0) {
perror("setrlimit(RLIMIT_NOFILE)");
fprintf(stderr, "Cannot exceed hard limit for open files");
}
#if defined(DEBUG)
if (getrlimit(RLIMIT_NOFILE, &rl) == 0)
printf("File descriptors set to %d\n", rl.rlim_cur);
#endif //DEBUG
}
}
#endif //SOLARIS
#ifdef XP_BEOS
signal(SIGTERM, beos_signal_handler);
#endif
#if defined(MOZ_WIDGET_GTK2) && (GLIB_MAJOR_VERSION > 2 || (GLIB_MAJOR_VERSION == 2 && GLIB_MINOR_VERSION >= 6))
const char *assertString = PR_GetEnv("XPCOM_DEBUG_BREAK");
if (assertString &&
(!strcmp(assertString, "suspend") ||
!strcmp(assertString, "stack") ||
!strcmp(assertString, "abort") ||
!strcmp(assertString, "trap") ||
!strcmp(assertString, "break"))) {
// Override the default glib logging function so we get stacks for it too.
orig_log_func = g_log_set_default_handler(my_glib_log_func, NULL);
}
#endif
}