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Merge pull request #2123 from chinmaygarde/master

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Add a counter to trace VSync events from the platform
This commit is contained in:
Chinmay Garde 2015-12-02 11:05:59 -08:00
commit 6fe302f3bb
1 changed files with 3 additions and 0 deletions
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3
sky/services/vsync/ios/vsync_provider_impl.mm
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@ -3,6 +3,7 @@
// found in the LICENSE file.
#include "sky/services/vsync/ios/vsync_provider_impl.h"
#include "base/trace_event/trace_event.h"
#include <Foundation/Foundation.h>
#include <QuartzCore/CADisplayLink.h>
@ -25,6 +26,7 @@ static inline uint64_t CurrentTimeMicrosSeconds() {
@implementation VSyncClient {
CADisplayLink* _displayLink;
::vsync::VSyncProvider::AwaitVSyncCallback _pendingCallback;
BOOL _traceLevel;
}
- (instancetype)init {
@ -48,6 +50,7 @@ static inline uint64_t CurrentTimeMicrosSeconds() {
}
- (void)onDisplayLink:(CADisplayLink*)link {
TRACE_COUNTER1("vsync", "PlatformVSync", _traceLevel = !_traceLevel);
_displayLink.paused = YES;
_pendingCallback.Run(CurrentTimeMicrosSeconds());
}