1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* Copyright (C) 2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
WI.HeapAllocationsInstrument = class HeapAllocationsInstrument extends WI.Instrument
{
constructor()
{
super();
this._snapshotIntervalIdentifier = undefined;
}
// Protected
get timelineRecordType()
{
return WI.TimelineRecord.Type.HeapAllocations;
}
startInstrumentation(initiatedByBackend)
{
// FIXME: Include a "track allocations" option for this instrument.
// FIXME: Include a periodic snapshot interval option for this instrument.
if (!initiatedByBackend) {
for (let target of WI.targets) {
if (target.type === WI.TargetType.Worker && !WI.settings.experimentalEnableWorkerTimelineRecording.value)
continue;
target.HeapAgent.startTracking();
}
}
// Periodic snapshots.
const snapshotInterval = 10_000;
this._snapshotIntervalIdentifier = setInterval(this._takeHeapSnapshot.bind(this), snapshotInterval);
}
stopInstrumentation(initiatedByBackend)
{
if (!initiatedByBackend) {
for (let target of WI.targets) {
if (target.type === WI.TargetType.Worker && !WI.settings.experimentalEnableWorkerTimelineRecording.value)
continue;
target.HeapAgent.stopTracking();
}
}
window.clearInterval(this._snapshotIntervalIdentifier);
this._snapshotIntervalIdentifier = undefined;
}
// Private
_takeHeapSnapshot()
{
for (let target of WI.targets) {
WI.heapManager.snapshot(target, (error, timestamp, snapshotStringData) => {
let workerProxy = WI.HeapSnapshotWorkerProxy.singleton();
workerProxy.createSnapshot(target.identifier, snapshotStringData, ({objectId, snapshot: serializedSnapshot}) => {
let snapshot = WI.HeapSnapshotProxy.deserialize(target, objectId, serializedSnapshot);
snapshot.snapshotStringData = snapshotStringData;
WI.timelineManager.heapSnapshotAdded(timestamp, snapshot);
});
});
}
}
};
|
