зеркало из https://github.com/mozilla/pjs.git
225 строки
8.6 KiB
Objective-C
225 строки
8.6 KiB
Objective-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.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Mozilla Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2008
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Josh Aas <josh@mozilla.com>
|
|
* Robert O'Callahan <robert@ocallahan.org>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either 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 NPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#ifndef nsObjCExceptions_h_
|
|
#define nsObjCExceptions_h_
|
|
|
|
#import <Foundation/Foundation.h>
|
|
|
|
#ifdef DEBUG
|
|
#import <ExceptionHandling/NSExceptionHandler.h>
|
|
#endif
|
|
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include "nsError.h"
|
|
|
|
// See Mozilla bug 163260.
|
|
// This file can only be included in an Objective-C context.
|
|
|
|
static void nsObjCExceptionLog(NSException* aException)
|
|
{
|
|
NSLog(@"Mozilla has caught an Obj-C exception [%@: %@]",
|
|
[aException name], [aException reason]);
|
|
|
|
#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
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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) { \
|
|
nsObjCExceptionLogAbort(_exn); \
|
|
}
|
|
|
|
#define NS_OBJC_TRY_EXPR_ABORT(_e) \
|
|
({ \
|
|
typeof(_e) _tmp; \
|
|
@try { _tmp = (_e); } \
|
|
@catch(NSException *_exn) { \
|
|
nsObjCExceptionLogAbort(_exn); \
|
|
} \
|
|
_tmp; \
|
|
})
|
|
|
|
// For wrapping blocks of Obj-C calls. Terminates app after logging.
|
|
#define NS_OBJC_BEGIN_TRY_ABORT_BLOCK @try {
|
|
#define NS_OBJC_END_TRY_ABORT_BLOCK } @catch(NSException *_exn) { \
|
|
nsObjCExceptionLogAbort(_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) { \
|
|
nsObjCExceptionLogAbort(_exn); \
|
|
} \
|
|
return nil;
|
|
|
|
#define NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSNULL @try {
|
|
#define NS_OBJC_END_TRY_ABORT_BLOCK_NSNULL } @catch(NSException *_exn) { \
|
|
nsObjCExceptionLogAbort(_exn); \
|
|
} \
|
|
return nsnull;
|
|
|
|
#define NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT @try {
|
|
#define NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT } @catch(NSException *_exn) { \
|
|
nsObjCExceptionLogAbort(_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) { \
|
|
nsObjCExceptionLogAbort(_exn);\
|
|
} \
|
|
return _rv;
|
|
|
|
#endif // nsObjCExceptions_h_
|