react-native/React/Base/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"
static int64_t RCTPLData[RCTPLSize][2] = {};
void RCTPerformanceLoggerStart(RCTPLTag tag)
{
RCTPLData[tag][0] = CACurrentMediaTime() * 1000;
}
void RCTPerformanceLoggerEnd(RCTPLTag tag)
{
RCTPLData[tag][1] = CACurrentMediaTime() * 1000;
}
NSArray *RCTPerformanceLoggerOutput(void)
{
return @[
@(RCTPLData[0][0]),
@(RCTPLData[0][1]),
@(RCTPLData[1][0]),
@(RCTPLData[1][1]),
@(RCTPLData[2][0]),
@(RCTPLData[2][1]),
];
}
@interface RCTPerformanceLogger : NSObject <RCTBridgeModule>
@end
@implementation RCTPerformanceLogger
RCT_EXPORT_MODULE()
@synthesize bridge = _bridge;
- (instancetype)init
{
if ((self = [super init])) {
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(sendTimespans)
name:RCTContentDidAppearNotification
object:nil];
}
return self;
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)sendTimespans
{
[_bridge enqueueJSCall:@"PerformanceLogger.addTimespans" args:@[
RCTPerformanceLoggerOutput(),
@[
@"ScriptDownload",
@"ScriptExecution",
@"TTI",
],
]];
}
@end