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appleguy
465abb1ded
* [License] Simplify the Texture license to be pure Apache 2 (removing ASDK-Licenses)
With permission of the Facebook Open Source team, we are simplifying the Texture
license so that clients can rely on the Apache 2 terms that most of Texture is
already covered by. This means that code originally forked from AsyncDisplayKit
will be re-licensed from "BSD 3-clause + PATENTS v2" to Apache 2 without a
PATENTS file.
After getting confirmation that the updates to these core files look good, we'll
propagate this new license header to all files (in this same PR) and get sign-off
from all parties before landing.
* [License] Update all Texture source files to be pure Apache 2.
* Changelog entry for Apache 2 license update.
* Revert "[License] Update all Texture source files to be pure Apache 2."
This reverts commit ffa0fbbba9.
* [License] Update all Texture source files to be pure Apache 2, maintaining copyrights.
* [License] Update CONTRIBUTING, README, Podspec & Dangerfile.
68 lines
2.3 KiB
Objective-C
68 lines
2.3 KiB
Objective-C
//
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// ASTraceEvent.m
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// Texture
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//
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// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
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// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
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// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <AsyncDisplayKit/ASTraceEvent.h>
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#import <QuartzCore/QuartzCore.h>
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static NSString *const ASTraceEventThreadDescriptionKey = @"ASThreadTraceEventDescription";
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@interface ASTraceEvent ()
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@property (nonatomic, readonly) NSString *objectDescription;
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@property (nonatomic, readonly) NSString *threadDescription;
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@end
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@implementation ASTraceEvent
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- (instancetype)initWithBacktrace:(NSArray<NSString *> *)backtrace format:(NSString *)format arguments:(va_list)args
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{
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self = [super init];
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if (self != nil) {
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static NSTimeInterval refTime;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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refTime = CACurrentMediaTime();
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});
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// Create the format string passed to us.
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_message = [[NSString alloc] initWithFormat:format arguments:args];
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NSThread *thread = [NSThread currentThread];
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NSString *threadDescription = thread.name;
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if (threadDescription.length == 0) {
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if ([thread isMainThread]) {
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threadDescription = @"Main";
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} else {
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// If the bg thread has no name, we cache a 4-character ptr string to identify it by
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// inside the thread dictionary.
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NSMutableDictionary *threadDict = thread.threadDictionary;
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threadDescription = threadDict[ASTraceEventThreadDescriptionKey];
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if (threadDescription == nil) {
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// Want these to be 4-chars to line up with "Main". It's possible that a collision could happen
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// here but it's so unbelievably likely to impact development, the risk is acceptable.
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NSString *ptrString = [NSString stringWithFormat:@"%p", thread];
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threadDescription = [ptrString substringFromIndex:MAX(0, ptrString.length - 4)];
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threadDict[ASTraceEventThreadDescriptionKey] = threadDescription;
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}
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}
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}
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_threadDescription = threadDescription;
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_backtrace = backtrace;
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_timestamp = CACurrentMediaTime() - refTime;
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}
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return self;
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}
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- (NSString *)description
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{
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return [NSString stringWithFormat:@"<(%@) t=%7.3f: %@>", _threadDescription, _timestamp, _message];
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}
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@end
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