RCTPerformanceLogger.m
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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import <QuartzCore/QuartzCore.h>
#import "RCTPerformanceLogger.h"
#import "RCTRootView.h"
#import "RCTLog.h"
#import "RCTProfile.h"
@interface RCTPerformanceLogger ()
{
int64_t _data[RCTPLSize][2];
NSUInteger _cookies[RCTPLSize];
}
@property (nonatomic, copy) NSArray<NSString *> *labelsForTags;
@end
@implementation RCTPerformanceLogger
- (instancetype)init
{
if (self = [super init]) {
_labelsForTags = @[
@"ScriptDownload",
@"ScriptExecution",
@"RAMBundleLoad",
@"RAMStartupCodeSize",
@"RAMStartupNativeRequires",
@"RAMStartupNativeRequiresCount",
@"RAMNativeRequires",
@"RAMNativeRequiresCount",
@"NativeModuleInit",
@"NativeModuleMainThread",
@"NativeModulePrepareConfig",
@"NativeModuleInjectConfig",
@"NativeModuleMainThreadUsesCount",
@"JSCWrapperOpenLibrary",
@"JSCExecutorSetup",
@"BridgeStartup",
@"RootViewTTI",
@"BundleSize",
];
}
return self;
}
- (void)markStartForTag:(RCTPLTag)tag
{
#if RCT_PROFILE
if (RCTProfileIsProfiling()) {
NSString *label = _labelsForTags[tag];
_cookies[tag] = RCTProfileBeginAsyncEvent(RCTProfileTagAlways, label, nil);
}
#endif
_data[tag][0] = CACurrentMediaTime() * 1000;
_data[tag][1] = 0;
}
- (void)markStopForTag:(RCTPLTag)tag
{
#if RCT_PROFILE
if (RCTProfileIsProfiling()) {
NSString *label =_labelsForTags[tag];
RCTProfileEndAsyncEvent(RCTProfileTagAlways, @"native", _cookies[tag], label, @"RCTPerformanceLogger");
}
#endif
if (_data[tag][0] != 0 && _data[tag][1] == 0) {
_data[tag][1] = CACurrentMediaTime() * 1000;
} else {
RCTLogInfo(@"Unbalanced calls start/end for tag %li", (unsigned long)tag);
}
}
- (void)setValue:(int64_t)value forTag:(RCTPLTag)tag
{
_data[tag][0] = 0;
_data[tag][1] = value;
}
- (void)addValue:(int64_t)value forTag:(RCTPLTag)tag
{
_data[tag][0] = 0;
_data[tag][1] += value;
}
- (void)appendStartForTag:(RCTPLTag)tag
{
_data[tag][0] = CACurrentMediaTime() * 1000;
}
- (void)appendStopForTag:(RCTPLTag)tag
{
if (_data[tag][0] != 0) {
_data[tag][1] += CACurrentMediaTime() * 1000 - _data[tag][0];
_data[tag][0] = 0;
} else {
RCTLogInfo(@"Unbalanced calls start/end for tag %li", (unsigned long)tag);
}
}
- (NSArray<NSNumber *> *)valuesForTags
{
NSMutableArray *result = [NSMutableArray array];
for (NSUInteger index = 0; index < RCTPLSize; index++) {
[result addObject:@(_data[index][0])];
[result addObject:@(_data[index][1])];
}
return result;
}
- (int64_t)durationForTag:(RCTPLTag)tag
{
return _data[tag][1] - _data[tag][0];
}
- (int64_t)valueForTag:(RCTPLTag)tag
{
return _data[tag][1];
}
@end