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
90
91
92
93
94
95
96
97
98
99
100
101
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/BaseProfileJSONWriter.h"
namespace mozilla::baseprofiler {
UniqueJSONStrings::UniqueJSONStrings(FailureLatch& aFailureLatch)
: mStringTableWriter(aFailureLatch) {
mStringTableWriter.StartBareList();
if (const char* failure = mStringTableWriter.GetFailure(); failure) {
ClearAndSetFailure(failure);
return;
}
}
UniqueJSONStrings::UniqueJSONStrings(FailureLatch& aFailureLatch,
const UniqueJSONStrings& aOther,
ProgressLogger aProgressLogger)
: mStringTableWriter(aFailureLatch) {
using namespace mozilla::literals::ProportionValue_literals; // For `10_pc`.
if (mStringTableWriter.Failed()) {
return;
}
if (const char* failure = aOther.GetFailure(); failure) {
ClearAndSetFailure(failure);
return;
}
mStringTableWriter.StartBareList();
uint32_t count = aOther.mStringHashToIndexMap.count();
if (count != 0) {
if (!mStringHashToIndexMap.reserve(count)) {
ClearAndSetFailure("Cannot reserve UniqueJSONStrings map storage");
return;
}
auto iter = aOther.mStringHashToIndexMap.iter();
for (auto&& [unusedIndex, progressLogger] :
aProgressLogger.CreateLoopSubLoggersFromTo(
10_pc, 90_pc, count, "Copying unique strings...")) {
(void)unusedIndex;
if (iter.done()) {
break;
}
mStringHashToIndexMap.putNewInfallible(iter.get().key(),
iter.get().value());
iter.next();
}
aProgressLogger.SetLocalProgress(90_pc, "Copied unique strings");
mStringTableWriter.CopyAndSplice(
aOther.mStringTableWriter.ChunkedWriteFunc());
if (const char* failure = aOther.GetFailure(); failure) {
ClearAndSetFailure(failure);
}
aProgressLogger.SetLocalProgress(100_pc, "Spliced unique strings");
}
}
UniqueJSONStrings::~UniqueJSONStrings() = default;
void UniqueJSONStrings::SpliceStringTableElements(
SpliceableJSONWriter& aWriter) {
aWriter.TakeAndSplice(mStringTableWriter.TakeChunkedWriteFunc());
}
void UniqueJSONStrings::ClearAndSetFailure(std::string aFailure) {
mStringTableWriter.SetFailure(std::move(aFailure));
mStringHashToIndexMap.clear();
}
Maybe<uint32_t> UniqueJSONStrings::GetOrAddIndex(const Span<const char>& aStr) {
if (Failed()) {
return Nothing{};
}
uint32_t count = mStringHashToIndexMap.count();
HashNumber hash = HashString(aStr.data(), aStr.size());
auto entry = mStringHashToIndexMap.lookupForAdd(hash);
if (entry) {
MOZ_ASSERT(entry->value() < count);
return Some(entry->value());
}
if (!mStringHashToIndexMap.add(entry, hash, count)) {
ClearAndSetFailure("OOM in UniqueJSONStrings::GetOrAddIndex adding a map");
return Nothing{};
}
mStringTableWriter.StringElement(aStr);
if (const char* failure = mStringTableWriter.GetFailure(); failure) {
ClearAndSetFailure(failure);
return Nothing{};
}
return Some(count);
}
} // namespace mozilla::baseprofiler
|
