Created
February 12, 2013 20:51
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Test app for whether or not -[NSFileManager defaultManager] returns the same instance on different thread (it does)
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| // | |
| // main.m | |
| // Threading | |
| // | |
| // Created by Patrick Robertson on 12/02/2013. | |
| // Copyright (c) 2013 Patrick Robertson. All rights reserved. | |
| // | |
| #import <Foundation/Foundation.h> | |
| int main(int argc, const char * argv[]) | |
| { | |
| @autoreleasepool { | |
| NSFileManager *fm1 = [NSFileManager defaultManager]; | |
| NSLog(@"thread %@: %p",[NSString stringWithUTF8String:dispatch_queue_get_label(dispatch_get_current_queue())],fm1); | |
| dispatch_sync(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ | |
| NSFileManager *fm2 = [NSFileManager defaultManager]; | |
| NSLog(@"thread %@: %p",[NSString stringWithUTF8String:dispatch_queue_get_label(dispatch_get_current_queue())],fm2); | |
| }); | |
| dispatch_sync(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^{ | |
| NSFileManager *fm3 = [NSFileManager defaultManager]; | |
| NSLog(@"thread %@: %p",[NSString stringWithUTF8String:dispatch_queue_get_label(dispatch_get_current_queue())],fm3); | |
| }); | |
| dispatch_queue_t concurrent_queue = dispatch_queue_create("concurrent queue", DISPATCH_QUEUE_CONCURRENT); | |
| dispatch_sync(concurrent_queue, ^{ | |
| NSFileManager *fm4 = [NSFileManager defaultManager]; | |
| NSLog(@"thread %@: %p",[NSString stringWithUTF8String:dispatch_queue_get_label(dispatch_get_current_queue())],fm4); | |
| }); | |
| dispatch_queue_t serial_queue = dispatch_queue_create("serial queue", DISPATCH_QUEUE_SERIAL); | |
| dispatch_sync(serial_queue, ^{ | |
| NSFileManager *fm5 = [NSFileManager defaultManager]; | |
| NSLog(@"thread %@: %p",[NSString stringWithUTF8String:dispatch_queue_get_label(dispatch_get_current_queue())],fm5); | |
| }); | |
| } | |
| return 0; | |
| } | |
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2013-02-12 20:48:49.484 Threading[12943:303] thread com.apple.main-thread: 0x1001081b0
2013-02-12 20:48:49.486 Threading[12943:303] thread com.apple.root.default-priority: 0x1001081b0
2013-02-12 20:48:49.488 Threading[12943:303] thread com.apple.root.background-priority: 0x1001081b0
2013-02-12 20:48:49.488 Threading[12943:303] thread conc: 0x1001081b0
2013-02-12 20:48:49.489 Threading[12943:303] thread serial: 0x1001081b0