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boinc/lib/diagnostics.C

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// Berkeley Open Infrastructure for Network Computing
// http://boinc.berkeley.edu
// Copyright (C) 2005 University of California
//
// This is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation;
// either version 2.1 of the License, or (at your option) any later version.
//
// This software 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 Lesser General Public License for more details.
//
// To view the GNU Lesser General Public License visit
// http://www.gnu.org/copyleft/lesser.html
// or write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// Stuff related to stderr/stdout direction and exception handling;
// used by both core client and by apps
#if defined(_WIN32) && !defined(__STDWX_H__) && !defined(_BOINC_WIN_) && !defined(_AFX_STDAFX_H_)
#include "boinc_win.h"
#endif
#ifdef __EMX__
#include <sys/stat.h>
#endif
#ifndef _WIN32
#include "config.h"
#include <cstdio>
#include <cstdarg>
#include <cstdlib>
#include "config.h"
#endif
#if defined(_WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN32__)
#include "stackwalker_win.h"
#endif
#ifdef __APPLE__
#include "mac_backtrace.h"
#endif
#ifdef __GLIBC__
#include <execinfo.h>
#endif
#include "diagnostics.h"
#include "error_numbers.h"
#include "filesys.h"
#include "util.h"
#define MAX_STDERR_FILE_SIZE 2048*1024
#define MAX_STDOUT_FILE_SIZE 2048*1024
static int flags;
static char stdout_log[256];
static char stdout_archive[256];
static FILE* stdout_file;
static char stderr_log[256];
static char stderr_archive[256];
static FILE* stderr_file;
#ifdef _WIN32
static int aborted_via_gui;
// This structure is used to keep track of stuff nessassary
// to dump backtraces for all threads during an abort or
// crash. This is platform specific in nature since it
// depends on the OS datatypes.
typedef struct _BOINC_THREADLIST {
char name[256];
DWORD thread_id;
HANDLE thread_handle;
} BOINC_THREADLIST, *PBOINC_THREADLIST;
static BOINC_THREADLIST diagnostics_threads[BOINC_THREADTYPE_COUNT];
LONG CALLBACK boinc_catch_signal(EXCEPTION_POINTERS *ExceptionInfo);
int __cdecl boinc_message_reporting( int reportType, char *szMsg, int *retVal );
#else
static void boinc_catch_signal(int signal);
#endif
// stub function for initializing the diagnostics environment.
//
int boinc_init_diagnostics(int _flags) {
return diagnostics_init( _flags, BOINC_DIAG_STDOUT, BOINC_DIAG_STDERR );
}
// Used to cleanup the diagnostics environment.
//
int boinc_finish_diag() {
return BOINC_SUCCESS;
}
// to setup an unhandled exception filter on Windows
//
int boinc_install_signal_handlers() {
#ifdef _WIN32
SetUnhandledExceptionFilter( boinc_catch_signal );
#else //_WIN32
// register handlers for fatal internal signals
// so that they get reported in stderr.txt
// Do NOT catch SIGQUIT because core client uses that to kill app
//
boinc_set_signal_handler(SIGILL, boinc_catch_signal);
boinc_set_signal_handler(SIGABRT, boinc_catch_signal);
boinc_set_signal_handler(SIGBUS, boinc_catch_signal);
boinc_set_signal_handler(SIGSEGV, boinc_catch_signal);
boinc_set_signal_handler(SIGSYS, boinc_catch_signal);
boinc_set_signal_handler(SIGPIPE, boinc_catch_signal);
#endif //_WIN32
return 0;
}
// initialize the diagnostics environment.
//
int diagnostics_init(
int _flags, const char* stdout_prefix, const char* stderr_prefix
) {
flags = _flags;
snprintf(stdout_log, sizeof(stdout_log), "%s.txt", stdout_prefix);
snprintf(stdout_archive, sizeof(stdout_archive), "%s.old", stdout_prefix);
snprintf(stderr_log, sizeof(stderr_log), "%s.txt", stderr_prefix);
snprintf(stderr_archive, sizeof(stderr_archive), "%s.old", stderr_prefix);
// Check for invalid parameter combinations
if ( ( flags & BOINC_DIAG_REDIRECTSTDERR ) && ( flags & BOINC_DIAG_REDIRECTSTDERROVERWRITE ) ) {
return ERR_INVALID_PARAM;
}
if ( ( flags & BOINC_DIAG_REDIRECTSTDOUT ) && ( flags & BOINC_DIAG_REDIRECTSTDOUTOVERWRITE ) ) {
return ERR_INVALID_PARAM;
}
// Archive any old stderr.txt and stdout.txt files, if requested
if ( flags & BOINC_DIAG_ARCHIVESTDERR ) {
boinc_copy(stderr_log, stderr_archive);
}
if ( flags & BOINC_DIAG_ARCHIVESTDOUT) {
boinc_copy( stdout_log, stdout_archive );
}
// Redirect stderr and/or stdout streams, if requested
if (flags & BOINC_DIAG_REDIRECTSTDERR ) {
stderr_file = freopen(stderr_log, "a", stderr);
if ( NULL == stderr_file ) {
return ERR_FOPEN;
}
}
if (flags & BOINC_DIAG_REDIRECTSTDERROVERWRITE ) {
stderr_file = freopen(stderr_log, "w", stderr);
if ( NULL == stderr_file ) {
return ERR_FOPEN;
}
}
if (flags & BOINC_DIAG_REDIRECTSTDOUT ) {
stdout_file = freopen(stdout_log, "a", stdout);
if ( NULL == stdout_file ) {
return ERR_FOPEN;
}
}
if (flags & BOINC_DIAG_REDIRECTSTDOUTOVERWRITE ) {
stdout_file = freopen(stdout_log, "w", stdout);
if ( NULL == stdout_file ) {
return ERR_FOPEN;
}
}
#if defined(_WIN32)
// Initialize the thread list structure
// The data for this structure should be set by
// boinc_init or boinc_init_graphics.
int i;
for (i=0; i < BOINC_THREADTYPE_COUNT; i++) {
diagnostics_threads[i].thread_id = NULL;
diagnostics_threads[i].thread_handle = NULL;
}
strcpy(diagnostics_threads[BOINC_THREADTYPE_TIMER].name, "Timer");
strcpy(diagnostics_threads[BOINC_THREADTYPE_WORKER].name, "Worker");
strcpy(diagnostics_threads[BOINC_THREADTYPE_GRAPHICS].name, "Graphics");
#if defined(_DEBUG)
_CrtSetReportHook( boinc_message_reporting );
if (flags & BOINC_DIAG_MEMORYLEAKCHECKENABLED )
SET_CRT_DEBUG_FIELD( _CRTDBG_LEAK_CHECK_DF );
if (flags & BOINC_DIAG_HEAPCHECKENABLED )
if (flags & BOINC_DIAG_HEAPCHECKEVERYALLOC )
SET_CRT_DEBUG_FIELD( _CRTDBG_CHECK_ALWAYS_DF );
else
SET_CRT_DEBUG_FIELD( _CRTDBG_CHECK_EVERY_1024_DF );
#endif // defined(_DEBUG)
#endif // defined(_WIN32)
// Install unhandled exception filters and signal traps.
if ( BOINC_SUCCESS != boinc_install_signal_handlers() ) {
return ERR_SIGNAL_OP;
}
return BOINC_SUCCESS;
}
// Cycle the log files at regular events.
//
int diagnostics_cycle_logs() {
double f_size;
fflush(stdout);
fflush(stderr);
// If the stderr.txt or stdout.txt files are too big, cycle them
//
if (flags & BOINC_DIAG_REDIRECTSTDERR) {
#ifdef __EMX__
// OS/2 can't stat() open files!
struct stat sbuf;
fstat(fileno(stderr_file), &sbuf);
f_size = (double)sbuf.st_size;
#else
file_size(stderr_log, f_size);
#endif
if (MAX_STDERR_FILE_SIZE < f_size) {
fclose( stderr_file );
boinc_copy(stderr_log, stderr_archive);
stderr_file = freopen( stderr_log, "w", stderr );
if ( NULL == stderr_file ) return ERR_FOPEN;
}
}
if (flags & BOINC_DIAG_REDIRECTSTDOUT) {
#ifdef __EMX__
// OS/2 can't stat() open files!
struct stat sbuf;
fstat(fileno(stdout_file), &sbuf);
f_size = (double)sbuf.st_size;
#else
file_size(stdout_log, f_size);
#endif
if (MAX_STDOUT_FILE_SIZE < f_size) {
fclose( stdout_file );
boinc_copy( stdout_log, stdout_archive );
stdout_file = freopen( stdout_log, "w", stdout );
if ( NULL == stdout_file ) return ERR_FOPEN;
}
}
return BOINC_SUCCESS;
}
#ifdef _WIN32
int diagnostics_set_aborted_via_gui_flag() {
aborted_via_gui = 1;
return 0;
}
int diagnostics_set_thread_info( int thread_type, DWORD thread_id, HANDLE thread_handle ) {
diagnostics_threads[thread_type].thread_id = thread_id;
diagnostics_threads[thread_type].thread_handle = thread_handle;
return 0;
}
int diagnostics_is_thread_type_initialized( int thread_type ) {
return (diagnostics_threads[thread_type].thread_id != NULL);
}
// Used to unwind the stack and spew the callstack to stderr. Terminate the
// process afterwards and return the exception code as the exit code.
//
LONG CALLBACK boinc_catch_signal(EXCEPTION_POINTERS *pExPtrs) {
// Removed due to a nested exception problem
// RTW: 09/30/2004
/*
// Snagged from the latest stackwalker code base. This allows us to grab
// callstacks even in a stack overflow scenario
if ( pExPtrs->ExceptionRecord->ExceptionCode == EXCEPTION_STACK_OVERFLOW )
{
static char MyStack[1024*128]; // be sure that we have enought space...
// it assumes that DS and SS are the same!!! (this is the case for Win32)
// change the stack only if the selectors are the same (this is the case for Win32)
//__asm push offset MyStack[1024*128];
//__asm pop esp;
__asm mov eax,offset MyStack[1024*128];
__asm mov esp,eax;
}
*/
#ifdef _DEBUG
if (flags & BOINC_DIAG_MEMORYLEAKCHECKENABLED )
CLEAR_CRT_DEBUG_FIELD( _CRTDBG_LEAK_CHECK_DF );
if (flags & BOINC_DIAG_HEAPCHECKENABLED )
CLEAR_CRT_DEBUG_FIELD( _CRTDBG_CHECK_EVERY_1024_DF );
#endif // _DEBUG
PVOID exceptionAddr = pExPtrs->ExceptionRecord->ExceptionAddress;
DWORD exceptionCode = pExPtrs->ExceptionRecord->ExceptionCode;
char status[256];
char substatus[256];
int i;
bool bDumpedException;
CONTEXT c;
static long lDetectNestedException = 0;
// If we've been in this procedure before, something went wrong so we immediately exit
if ( InterlockedIncrement(&lDetectNestedException) > 1 ) {
TerminateProcess( GetCurrentProcess(), (UINT)ERR_NESTED_UNHANDLED_EXCEPTION_DETECTED );
}
switch ( exceptionCode ) {
case EXCEPTION_ACCESS_VIOLATION:
strcpy( status, "Access Violation");
if ( pExPtrs->ExceptionRecord->NumberParameters == 2 ) {
switch( pExPtrs->ExceptionRecord->ExceptionInformation[0] ) {
case 0: // read attempt
sprintf( substatus, "read attempt to address 0x%8.8X", pExPtrs->ExceptionRecord->ExceptionInformation[1] );
break;
case 1: // write attempt
sprintf( substatus, "write attempt to address 0x%8.8X", pExPtrs->ExceptionRecord->ExceptionInformation[1] );
break;
}
}
break;
case EXCEPTION_DATATYPE_MISALIGNMENT:
strcpy( status, "Data Type Misalignment");
break;
case EXCEPTION_BREAKPOINT:
strcpy( status, "Breakpoint Encountered");
break;
case EXCEPTION_SINGLE_STEP:
strcpy( status, "Single Instruction Executed");
break;
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
strcpy( status, "Array Bounds Exceeded");
break;
case EXCEPTION_FLT_DENORMAL_OPERAND:
strcpy( status, "Float Denormal Operand");
break;
case EXCEPTION_FLT_DIVIDE_BY_ZERO:
strcpy( status, "Divide by Zero");
break;
case EXCEPTION_FLT_INEXACT_RESULT:
strcpy( status, "Float Inexact Result");
break;
case EXCEPTION_FLT_INVALID_OPERATION:
strcpy( status, "Float Invalid Operation");
break;
case EXCEPTION_FLT_OVERFLOW:
strcpy( status, "Float Overflow");
break;
case EXCEPTION_FLT_STACK_CHECK:
strcpy( status, "Float Stack Check");
break;
case EXCEPTION_FLT_UNDERFLOW:
strcpy( status, "Float Underflow");
break;
case EXCEPTION_INT_DIVIDE_BY_ZERO:
strcpy( status, "Integer Divide by Zero");
break;
case EXCEPTION_INT_OVERFLOW:
strcpy( status, "Integer Overflow");
break;
case EXCEPTION_PRIV_INSTRUCTION:
strcpy( status, "Privileged Instruction");
break;
case EXCEPTION_IN_PAGE_ERROR:
strcpy( status, "In Page Error");
break;
case EXCEPTION_ILLEGAL_INSTRUCTION:
strcpy( status, "Illegal Instruction");
break;
case EXCEPTION_NONCONTINUABLE_EXCEPTION:
strcpy( status, "Noncontinuable Exception");
break;
case EXCEPTION_STACK_OVERFLOW:
strcpy( status, "Stack Overflow");
break;
case EXCEPTION_INVALID_DISPOSITION:
strcpy( status, "Invalid Disposition");
break;
case EXCEPTION_GUARD_PAGE:
strcpy( status, "Guard Page Violation");
break;
case EXCEPTION_INVALID_HANDLE:
strcpy( status, "Invalid Handle");
break;
case CONTROL_C_EXIT:
strcpy( status, "Ctrl+C Exit");
break;
default:
strcpy( status, "Unknown exception");
break;
}
fprintf( stderr, "\n***UNHANDLED EXCEPTION****\n" );
if ( EXCEPTION_ACCESS_VIOLATION == exceptionCode ) {
fprintf( stderr, "Reason: %s (0x%x) at address 0x%p %s\n\n", status, exceptionCode, exceptionAddr, substatus );
} else {
fprintf( stderr, "Reason: %s (0x%x) at address 0x%p\n\n", status, exceptionCode, exceptionAddr );
}
fflush( stderr );
#if !defined(__MINGW32__) && !defined(__CYGWIN32__)
// Unwind the stack and spew it to stderr
if (flags & BOINC_DIAG_DUMPCALLSTACKENABLED ) {
InitStackWalk();
fprintf( stderr, "\n" );
fflush( stderr );
// Suspend the other threads.
for (i=0; i < BOINC_THREADTYPE_COUNT; i++) {
if ((GetCurrentThreadId() != diagnostics_threads[i].thread_id) && diagnostics_threads[i].thread_id) {
// Suspend the thread before getting the threads context, otherwise
// it'll be junk.
SuspendThread(diagnostics_threads[i].thread_handle);
}
}
// Dump the offending thread's stack first.
bDumpedException = false;
for (i=0; i < BOINC_THREADTYPE_COUNT; i++) {
if (GetCurrentThreadId() == diagnostics_threads[i].thread_id) {
fprintf( stderr, "Dump of the %s(offending) thread:\n", diagnostics_threads[i].name );
StackwalkFilter( pExPtrs, EXCEPTION_EXECUTE_HANDLER, NULL );
fflush( stderr );
bDumpedException = true;
}
}
if (!bDumpedException) {
fprintf( stderr, "Dump of the (offending) thread:\n" );
StackwalkFilter( pExPtrs, EXCEPTION_EXECUTE_HANDLER, NULL );
fflush( stderr );
}
// Dump the other threads stack.
for (i=0; i < BOINC_THREADTYPE_COUNT; i++) {
if ((GetCurrentThreadId() != diagnostics_threads[i].thread_id) && diagnostics_threads[i].thread_id) {
// Get the thread context
memset(&c, 0, sizeof(CONTEXT));
c.ContextFlags = CONTEXT_FULL;
GetThreadContext(diagnostics_threads[i].thread_handle, &c);
// Dump the thread's stack.
fprintf( stderr, "Dump of the %s thread:\n", diagnostics_threads[i].name, c.Ebp, c.Eip );
StackwalkThread( diagnostics_threads[i].thread_handle, &c, NULL );
fflush( stderr );
}
}
}
#endif
fprintf( stderr, "Exiting...\n" );
fflush( stderr );
// Force terminate the app letting BOINC know an exception has occurred.
if (aborted_via_gui) {
TerminateProcess( GetCurrentProcess(), ERR_ABORTED_VIA_GUI );
} else {
TerminateProcess( GetCurrentProcess(), pExPtrs->ExceptionRecord->ExceptionCode );
}
// We won't make it to this point, but make the compiler happy anyway.
return 1;
}
#ifdef _DEBUG
// Trap ASSERTs and TRACEs from the CRT and spew them to stderr.
//
int __cdecl boinc_message_reporting( int reportType, char *szMsg, int *retVal ){
(*retVal) = 0;
switch(reportType){
case _CRT_WARN:
case _CRT_ERROR:
OutputDebugString(szMsg); // Reports string to the debugger output window
if (flags & BOINC_DIAG_TRACETOSTDERR ) {
fprintf( stderr, szMsg );
fflush( stderr );
}
if (flags & BOINC_DIAG_TRACETOSTDOUT ) {
fprintf( stdout, szMsg );
fflush( stdout );
}
break;
case _CRT_ASSERT:
OutputDebugString("ASSERT: "); // Reports string to the debugger output window
OutputDebugString(szMsg); // Reports string to the debugger output window
OutputDebugString("\n"); // Reports string to the debugger output window
fprintf( stderr, "ASSERT: %s\n", szMsg );
fflush( stderr );
(*retVal) = 1;
break;
}
return(TRUE);
}
// Converts the BOINCTRACE macro into a single string and report it
// to the CRT so it can be reported via the normal means.
//
void boinc_trace(const char *pszFormat, ...) {
static char szBuffer[4096];
// Trace messages should only be reported if running as a standalone
// application or told too.
if ((flags & BOINC_DIAG_TRACETOSTDERR) ||
(flags & BOINC_DIAG_TRACETOSTDOUT) ) {
memset(szBuffer, 0, sizeof(szBuffer));
va_list ptr;
va_start(ptr, pszFormat);
vsnprintf(szBuffer, sizeof(szBuffer), pszFormat, ptr);
va_end(ptr);
_CrtDbgReport(_CRT_WARN, NULL, NULL, NULL, "TRACE: %s", szBuffer);
}
}
// Converts the BOINCINFO macro into a single string and report it
// to stderr so it can be reported via the normal means.
//
void boinc_info_debug(const char *pszFormat, ...){
static char szBuffer[4096];
memset(szBuffer, 0, sizeof(szBuffer));
va_list ptr;
va_start(ptr, pszFormat);
vsnprintf(szBuffer, sizeof(szBuffer), pszFormat, ptr);
va_end(ptr);
_CrtDbgReport(_CRT_WARN, NULL, NULL, NULL, "%s", szBuffer);
}
#else // _DEBUG
// Converts the BOINCINFO macro into a single string and report it
// to stderr so it can be reported via the normal means.
//
void boinc_info_release(const char *pszFormat, ...){
static char szBuffer[4096];
memset(szBuffer, 0, sizeof(szBuffer));
va_list ptr;
va_start(ptr, pszFormat);
vsnprintf(szBuffer, sizeof(szBuffer), pszFormat, ptr);
va_end(ptr);
fprintf( stderr, "%s", szBuffer );
fflush( stderr );
}
#endif // _DEBUG
#else // _WIN32
#ifdef _DEBUG
// Converts the BOINCTRACE macro into a single string and report it
// to the CRT so it can be reported via the normal means.
//
void boinc_trace(const char *pszFormat, ...) {
static char szBuffer[4096];
// Trace messages should only be reported if running as a standalone
// application or told too.
if ((flags & BOINC_DIAG_TRACETOSTDERR) ||
(flags & BOINC_DIAG_TRACETOSTDOUT) ) {
memset(szBuffer, 0, sizeof(szBuffer));
va_list ptr;
va_start(ptr, pszFormat);
vsnprintf(szBuffer, sizeof(szBuffer), pszFormat, ptr);
va_end(ptr);
if (flags & BOINC_DIAG_TRACETOSTDERR ) {
fprintf( stderr, "TRACE: %s", szBuffer );
fflush( stderr );
}
if (flags & BOINC_DIAG_TRACETOSTDOUT ) {
fprintf( stdout, "TRACE: %s", szBuffer );
fflush( stdout );
}
}
}
// Converts the BOINCINFO macro into a single string and report it
// to stderr so it can be reported via the normal means.
//
void boinc_info_debug(const char *pszFormat, ...){
static char szBuffer[4096];
memset(szBuffer, 0, sizeof(szBuffer));
va_list ptr;
va_start(ptr, pszFormat);
vsnprintf(szBuffer, sizeof(szBuffer), pszFormat, ptr);
va_end(ptr);
fprintf( stderr, "%s", szBuffer );
fflush( stderr );
}
#else // _DEBUG
// Converts the BOINCINFO macro into a single string and report it
// to stderr so it can be reported via the normal means.
//
void boinc_info_release(const char *pszFormat, ...){
static char szBuffer[4096];
memset(szBuffer, 0, sizeof(szBuffer));
va_list ptr;
va_start(ptr, pszFormat);
vsnprintf(szBuffer, sizeof(szBuffer), pszFormat, ptr);
va_end(ptr);
fprintf( stderr, "%s", szBuffer );
fflush( stderr );
}
#endif // _DEBUG
#endif // _WIN32
// Diagnostics for POSIX Compatible systems.
//
#ifdef HAVE_SIGNAL_H
// Set a signal handler only if it is not currently ignored
//
void boinc_set_signal_handler(int sig, void(*handler)(int)) {
#ifdef HAVE_SIGACTION
struct sigaction temp;
sigaction(sig, NULL, &temp);
if (temp.sa_handler != SIG_IGN) {
temp.sa_handler = handler;
// sigemptyset(&temp.sa_mask);
sigaction(sig, &temp, NULL);
}
#else
void (*temp)(int);
temp = signal(sig, boinc_catch_signal);
if (temp == SIG_IGN) {
signal(sig, SIG_IGN);
}
#endif /* HAVE_SIGACTION */
}
// Set a signal handler even if it is currently ignored
//
void boinc_set_signal_handler_force(int sig, void(*handler)(int)) {
#ifdef HAVE_SIGACTION
struct sigaction temp;
sigaction(sig, NULL, &temp);
temp.sa_handler = handler;
// sigemptyset(&temp.sa_mask);
sigaction(sig, &temp, NULL);
#else
void (*temp)(int);
temp = signal(sig, boinc_catch_signal);
signal(sig, SIG_IGN);
#endif /* HAVE_SIGACTION */
}
void boinc_catch_signal(int signal) {
switch(signal) {
case SIGHUP: fprintf(stderr, "SIGHUP: terminal line hangup");
return;
case SIGINT: fprintf(stderr, "SIGINT: interrupt program"); break;
case SIGILL: fprintf(stderr, "SIGILL: illegal instruction"); break;
case SIGABRT: fprintf(stderr, "SIGABRT: abort called"); break;
case SIGBUS: fprintf(stderr, "SIGBUS: bus error"); break;
case SIGSEGV: fprintf(stderr, "SIGSEGV: segmentation violation"); break;
case SIGSYS: fprintf(stderr, "SIGSYS: system call given invalid argument"); break;
case SIGPIPE: fprintf(stderr, "SIGPIPE: write on a pipe with no reader");
return;
default: fprintf(stderr, "unknown signal %d", signal); break;
}
#ifdef __GLIBC__
void *array[64];
size_t size;
size = backtrace (array, 64);
fprintf(stderr, "Stack trace (%d frames):\n", size);
backtrace_symbols_fd(array, size, fileno(stderr));
#endif
#ifdef __APPLE__
PrintBacktrace();
#endif
fprintf(stderr, "\nExiting...\n");
exit(ERR_SIGNAL_CATCH);
}
#endif
const char *BOINC_RCSID_4967ad204c = "$Id$";
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