mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-30 13:45:27 +00:00
225 lines
8.5 KiB
Objective-C
225 lines
8.5 KiB
Objective-C
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef nsObjCExceptions_h_
|
|
#define nsObjCExceptions_h_
|
|
|
|
#import <Foundation/Foundation.h>
|
|
|
|
#ifdef DEBUG
|
|
#import <ExceptionHandling/NSExceptionHandler.h>
|
|
#endif
|
|
|
|
#if defined(MOZ_CRASHREPORTER) && defined(__cplusplus)
|
|
#include "nsICrashReporter.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsServiceManagerUtils.h"
|
|
#endif
|
|
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include "nsError.h"
|
|
|
|
/* NOTE: Macros that claim to abort no longer abort, see bug 486574.
|
|
* If you actually want to log and abort, call "nsObjCExceptionLogAbort"
|
|
* from an exception handler. At some point we will fix this by replacing
|
|
* all macros in the tree with appropriately-named macros.
|
|
*/
|
|
|
|
// See Mozilla bug 163260.
|
|
// This file can only be included in an Objective-C context.
|
|
|
|
__attribute__((unused))
|
|
static void nsObjCExceptionLog(NSException* aException)
|
|
{
|
|
NSLog(@"Mozilla has caught an Obj-C exception [%@: %@]",
|
|
[aException name], [aException reason]);
|
|
|
|
#if defined(MOZ_CRASHREPORTER) && defined(__cplusplus)
|
|
// Attach exception info to the crash report.
|
|
nsCOMPtr<nsICrashReporter> crashReporter =
|
|
do_GetService("@mozilla.org/toolkit/crash-reporter;1");
|
|
if (crashReporter)
|
|
crashReporter->AppendObjCExceptionInfoToAppNotes(static_cast<void*>(aException));
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
@try {
|
|
// Try to get stack information out of the exception. 10.5 returns the stack
|
|
// info with the callStackReturnAddresses selector.
|
|
NSArray *stackTrace = nil;
|
|
if ([aException respondsToSelector:@selector(callStackReturnAddresses)]) {
|
|
NSArray* addresses = (NSArray*)
|
|
[aException performSelector:@selector(callStackReturnAddresses)];
|
|
if ([addresses count])
|
|
stackTrace = addresses;
|
|
}
|
|
|
|
// 10.4 doesn't respond to callStackReturnAddresses so we'll try to pull the
|
|
// stack info out of the userInfo. It might not be there, sadly :(
|
|
if (!stackTrace)
|
|
stackTrace = [[aException userInfo] objectForKey:NSStackTraceKey];
|
|
|
|
if (stackTrace) {
|
|
// The command line should look like this:
|
|
// /usr/bin/atos -p <pid> -printHeader <stack frame addresses>
|
|
NSMutableArray *args =
|
|
[NSMutableArray arrayWithCapacity:[stackTrace count] + 3];
|
|
|
|
[args addObject:@"-p"];
|
|
int pid = [[NSProcessInfo processInfo] processIdentifier];
|
|
[args addObject:[NSString stringWithFormat:@"%d", pid]];
|
|
|
|
[args addObject:@"-printHeader"];
|
|
|
|
unsigned int stackCount = [stackTrace count];
|
|
unsigned int stackIndex = 0;
|
|
for (; stackIndex < stackCount; stackIndex++)
|
|
[args addObject:[[stackTrace objectAtIndex:stackIndex] stringValue]];
|
|
|
|
NSPipe *outPipe = [NSPipe pipe];
|
|
|
|
NSTask *task = [[NSTask alloc] init];
|
|
[task setLaunchPath:@"/usr/bin/atos"];
|
|
[task setArguments:args];
|
|
[task setStandardOutput:outPipe];
|
|
[task setStandardError:outPipe];
|
|
|
|
NSLog(@"Generating stack trace for Obj-C exception...");
|
|
|
|
// This will throw an exception if the atos tool cannot be found, and in
|
|
// that case we'll just hit our @catch block below.
|
|
[task launch];
|
|
|
|
[task waitUntilExit];
|
|
[task release];
|
|
|
|
NSData *outData =
|
|
[[outPipe fileHandleForReading] readDataToEndOfFile];
|
|
NSString *outString =
|
|
[[NSString alloc] initWithData:outData encoding:NSUTF8StringEncoding];
|
|
|
|
NSLog(@"Stack trace:\n%@", outString);
|
|
|
|
[outString release];
|
|
}
|
|
else {
|
|
NSLog(@"<No stack information available for Obj-C exception>");
|
|
}
|
|
}
|
|
@catch (NSException *exn) {
|
|
NSLog(@"Failed to generate stack trace for Obj-C exception [%@: %@]",
|
|
[exn name], [exn reason]);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
__attribute__((unused))
|
|
static void nsObjCExceptionAbort()
|
|
{
|
|
// We need to raise a mach-o signal here, the Mozilla crash reporter on
|
|
// Mac OS X does not respond to POSIX signals. Raising mach-o signals directly
|
|
// is tricky so we do it by just derefing a null pointer.
|
|
int* foo = NULL;
|
|
*foo = 1;
|
|
}
|
|
|
|
__attribute__((unused))
|
|
static void nsObjCExceptionLogAbort(NSException *e)
|
|
{
|
|
nsObjCExceptionLog(e);
|
|
nsObjCExceptionAbort();
|
|
}
|
|
|
|
#define NS_OBJC_TRY(_e, _fail) \
|
|
@try { _e; } \
|
|
@catch(NSException *_exn) { \
|
|
nsObjCExceptionLog(_exn); \
|
|
_fail; \
|
|
}
|
|
|
|
#define NS_OBJC_TRY_EXPR(_e, _fail) \
|
|
({ \
|
|
typeof(_e) _tmp; \
|
|
@try { _tmp = (_e); } \
|
|
@catch(NSException *_exn) { \
|
|
nsObjCExceptionLog(_exn); \
|
|
_fail; \
|
|
} \
|
|
_tmp; \
|
|
})
|
|
|
|
#define NS_OBJC_TRY_EXPR_NULL(_e) \
|
|
NS_OBJC_TRY_EXPR(_e, 0)
|
|
|
|
#define NS_OBJC_TRY_IGNORE(_e) \
|
|
NS_OBJC_TRY(_e, )
|
|
|
|
// To reduce code size the abort versions do not reuse above macros. This allows
|
|
// catch blocks to only contain one call.
|
|
|
|
#define NS_OBJC_TRY_ABORT(_e) \
|
|
@try { _e; } \
|
|
@catch(NSException *_exn) { \
|
|
nsObjCExceptionLog(_exn); \
|
|
}
|
|
|
|
#define NS_OBJC_TRY_EXPR_ABORT(_e) \
|
|
({ \
|
|
typeof(_e) _tmp; \
|
|
@try { _tmp = (_e); } \
|
|
@catch(NSException *_exn) { \
|
|
nsObjCExceptionLog(_exn); \
|
|
} \
|
|
_tmp; \
|
|
})
|
|
|
|
// For wrapping blocks of Obj-C calls. Does not actually terminate.
|
|
#define NS_OBJC_BEGIN_TRY_ABORT_BLOCK @try {
|
|
#define NS_OBJC_END_TRY_ABORT_BLOCK } @catch(NSException *_exn) { \
|
|
nsObjCExceptionLog(_exn); \
|
|
}
|
|
|
|
// Same as above ABORT_BLOCK but returns a value after the try/catch block to
|
|
// suppress compiler warnings. This allows us to avoid having to refactor code
|
|
// to get scoping right when wrapping an entire method.
|
|
|
|
#define NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL @try {
|
|
#define NS_OBJC_END_TRY_ABORT_BLOCK_NIL } @catch(NSException *_exn) { \
|
|
nsObjCExceptionLog(_exn); \
|
|
} \
|
|
return nil;
|
|
|
|
#define NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSNULL @try {
|
|
#define NS_OBJC_END_TRY_ABORT_BLOCK_NSNULL } @catch(NSException *_exn) { \
|
|
nsObjCExceptionLog(_exn); \
|
|
} \
|
|
return nullptr;
|
|
|
|
#define NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT @try {
|
|
#define NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT } @catch(NSException *_exn) { \
|
|
nsObjCExceptionLog(_exn); \
|
|
} \
|
|
return NS_ERROR_FAILURE;
|
|
|
|
#define NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN @try {
|
|
#define NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(_rv) } @catch(NSException *_exn) { \
|
|
nsObjCExceptionLog(_exn);\
|
|
} \
|
|
return _rv;
|
|
|
|
#define NS_OBJC_BEGIN_TRY_LOGONLY_BLOCK @try {
|
|
#define NS_OBJC_END_TRY_LOGONLY_BLOCK } @catch(NSException *_exn) { \
|
|
nsObjCExceptionLog(_exn); \
|
|
}
|
|
|
|
#define NS_OBJC_BEGIN_TRY_LOGONLY_BLOCK_RETURN @try {
|
|
#define NS_OBJC_END_TRY_LOGONLY_BLOCK_RETURN(_rv) } @catch(NSException *_exn) { \
|
|
nsObjCExceptionLog(_exn); \
|
|
} \
|
|
return _rv;
|
|
|
|
#endif // nsObjCExceptions_h_
|