129 lines
2.8 KiB
Objective-C
129 lines
2.8 KiB
Objective-C
#import "NSObject+SPInvocationGrabbing.h"
|
|
#import <execinfo.h>
|
|
|
|
#pragma mark Invocation grabbing
|
|
@interface SPInvocationGrabber ()
|
|
@property (readwrite, retain, nonatomic) id object;
|
|
@property (readwrite, retain, nonatomic) NSInvocation *invocation;
|
|
|
|
@end
|
|
|
|
@implementation SPInvocationGrabber
|
|
- (id)initWithObject:(id)obj;
|
|
{
|
|
return [self initWithObject:obj stacktraceSaving:YES];
|
|
}
|
|
|
|
-(id)initWithObject:(id)obj stacktraceSaving:(BOOL)saveStack;
|
|
{
|
|
self.object = obj;
|
|
|
|
if(saveStack)
|
|
[self saveBacktrace];
|
|
|
|
return self;
|
|
}
|
|
-(void)dealloc;
|
|
{
|
|
free(frameStrings);
|
|
self.object = nil;
|
|
self.invocation = nil;
|
|
[super dealloc];
|
|
}
|
|
@synthesize invocation = _invocation, object = _object;
|
|
|
|
@synthesize backgroundAfterForward, onMainAfterForward, waitUntilDone;
|
|
- (void)runInBackground;
|
|
{
|
|
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
|
|
@try {
|
|
[self invoke];
|
|
}
|
|
@finally {
|
|
[pool drain];
|
|
}
|
|
}
|
|
|
|
|
|
- (void)forwardInvocation:(NSInvocation *)anInvocation {
|
|
[anInvocation retainArguments];
|
|
anInvocation.target = _object;
|
|
self.invocation = anInvocation;
|
|
|
|
if(backgroundAfterForward)
|
|
[NSThread detachNewThreadSelector:@selector(runInBackground) toTarget:self withObject:nil];
|
|
else if(onMainAfterForward)
|
|
[self performSelectorOnMainThread:@selector(invoke) withObject:nil waitUntilDone:waitUntilDone];
|
|
}
|
|
- (NSMethodSignature *)methodSignatureForSelector:(SEL)inSelector {
|
|
NSMethodSignature *signature = [super methodSignatureForSelector:inSelector];
|
|
if (signature == NULL)
|
|
signature = [_object methodSignatureForSelector:inSelector];
|
|
|
|
return signature;
|
|
}
|
|
|
|
- (void)invoke;
|
|
{
|
|
|
|
@try {
|
|
[_invocation invoke];
|
|
}
|
|
@catch (NSException * e) {
|
|
NSLog(@"SPInvocationGrabber's target raised %@:\n\t%@\nInvocation was originally scheduled at:", e.name, e);
|
|
[self printBacktrace];
|
|
printf("\n");
|
|
[e raise];
|
|
}
|
|
|
|
self.invocation = nil;
|
|
self.object = nil;
|
|
}
|
|
|
|
-(void)saveBacktrace;
|
|
{
|
|
void *backtraceFrames[128];
|
|
frameCount = backtrace(&backtraceFrames[0], 128);
|
|
frameStrings = backtrace_symbols(&backtraceFrames[0], frameCount);
|
|
}
|
|
-(void)printBacktrace;
|
|
{
|
|
int x;
|
|
for(x = 3; x < frameCount; x++) {
|
|
if(frameStrings[x] == NULL) { break; }
|
|
printf("%s\n", frameStrings[x]);
|
|
}
|
|
}
|
|
@end
|
|
|
|
@implementation NSObject (SPInvocationGrabbing)
|
|
-(id)grab;
|
|
{
|
|
return [[[SPInvocationGrabber alloc] initWithObject:self] autorelease];
|
|
}
|
|
-(id)invokeAfter:(NSTimeInterval)delta;
|
|
{
|
|
id grabber = [self grab];
|
|
[NSTimer scheduledTimerWithTimeInterval:delta target:grabber selector:@selector(invoke) userInfo:nil repeats:NO];
|
|
return grabber;
|
|
}
|
|
- (id)nextRunloop;
|
|
{
|
|
return [self invokeAfter:0];
|
|
}
|
|
-(id)inBackground;
|
|
{
|
|
SPInvocationGrabber *grabber = [self grab];
|
|
grabber.backgroundAfterForward = YES;
|
|
return grabber;
|
|
}
|
|
-(id)onMainAsync:(BOOL)async;
|
|
{
|
|
SPInvocationGrabber *grabber = [self grab];
|
|
grabber.onMainAfterForward = YES;
|
|
grabber.waitUntilDone = !async;
|
|
return grabber;
|
|
}
|
|
|
|
@end
|