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Added profiler event for triggering heap snapshots when using ts-perf

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This commit is contained in:
Ron Buckton 2016-05-31 12:06:51 -07:00
parent 49f3bbfb8e
commit 736f09d7b0
1 changed files with 20 additions and 1 deletions
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21
src/compiler/core.ts
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@ -1151,9 +1151,23 @@ namespace ts {
/** Performance measurements for the compiler. */
/*@internal*/
export namespace performance {
declare const onProfilerEvent: { (markName: string): void; profiler: boolean; };
let profilerEvent: (markName: string) => void;
let counters: Map<number>;
let measures: Map<number>;
/**
* Emit a performance event if ts-profiler is connected. This is primarily used
* to generate heap snapshots.
*
* @param eventName A name for the event.
*/
export function emit(eventName: string) {
if (profilerEvent) {
onProfilerEvent(eventName);
}
}
/**
* Increments a counter with the specified name.
*
@ -1189,7 +1203,7 @@ namespace ts {
*/
export function measure(measureName: string, marker: number) {
if (measures) {
measures[measureName] = (getProperty(measures, measureName) || 0) + (mark() - marker);
measures[measureName] = (getProperty(measures, measureName) || 0) + (Date.now() - marker);
}
}
@ -1216,12 +1230,17 @@ namespace ts {
commentTime: 0,
sourceMapTime: 0
};
profilerEvent = typeof onProfilerEvent === "function" && onProfilerEvent.profiler === true
? onProfilerEvent
: undefined;
}
/** Disables (and clears) performance measurements for the compiler. */
export function disable() {
counters = undefined;
measures = undefined;
profilerEvent = undefined;
}
}
}