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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/* -*- Mode: C++; tab-width: 8; 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 "TimeoutHandler.h"
#include "mozilla/Assertions.h"
#include "mozilla/HoldDropJSObjects.h"
namespace mozilla::dom {
//-----------------------------------------------------------------------------
// TimeoutHandler
//-----------------------------------------------------------------------------
bool TimeoutHandler::Call(const char* /* unused */) { return false; }
void TimeoutHandler::GetDescription(nsACString& aOutString) {
aOutString.AppendPrintf("<generic handler> (%s:%d:%d)",
mCaller.FileName().get(), mCaller.mLine,
mCaller.mColumn);
}
//-----------------------------------------------------------------------------
// ScriptTimeoutHandler
//-----------------------------------------------------------------------------
ScriptTimeoutHandler::ScriptTimeoutHandler(JSContext* aCx,
nsIGlobalObject* aGlobal,
const nsAString& aExpression)
: TimeoutHandler(aCx), mGlobal(aGlobal), mExpr(aExpression) {}
NS_IMPL_CYCLE_COLLECTION_CLASS(ScriptTimeoutHandler)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(ScriptTimeoutHandler)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mGlobal)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(ScriptTimeoutHandler)
if (MOZ_UNLIKELY(cb.WantDebugInfo())) {
nsAutoCString name("ScriptTimeoutHandler");
name.AppendLiteral(" [");
name.Append(tmp->mCaller.FileName());
name.Append(':');
name.AppendInt(tmp->mCaller.mLine);
name.Append(':');
name.AppendInt(tmp->mCaller.mColumn);
name.Append(']');
cb.DescribeRefCountedNode(tmp->mRefCnt.get(), name.get());
} else {
NS_IMPL_CYCLE_COLLECTION_DESCRIBE(ScriptTimeoutHandler, tmp->mRefCnt.get())
}
// If we need to make TimeoutHandler CCed, don't call its Traverse method
// here, otherwise we ends up report same object twice if logging is on. See
// https://bugzilla.mozilla.org/show_bug.cgi?id=1588208.
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ScriptTimeoutHandler)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(ScriptTimeoutHandler)
NS_IMPL_CYCLE_COLLECTING_RELEASE(ScriptTimeoutHandler)
void ScriptTimeoutHandler::GetDescription(nsACString& aOutString) {
if (mExpr.Length() > 15) {
aOutString.AppendPrintf(
"<string handler (truncated): \"%s...\"> (%s:%d:%d)",
NS_ConvertUTF16toUTF8(Substring(mExpr, 0, 13)).get(),
mCaller.FileName().get(), mCaller.mLine, mCaller.mColumn);
} else {
aOutString.AppendPrintf("<string handler: \"%s\"> (%s:%d:%d)",
NS_ConvertUTF16toUTF8(mExpr).get(),
mCaller.FileName().get(), mCaller.mLine,
mCaller.mColumn);
}
}
//-----------------------------------------------------------------------------
// CallbackTimeoutHandler
//-----------------------------------------------------------------------------
CallbackTimeoutHandler::CallbackTimeoutHandler(
JSContext* aCx, nsIGlobalObject* aGlobal, Function* aFunction,
nsTArray<JS::Heap<JS::Value>>&& aArguments)
: TimeoutHandler(aCx), mGlobal(aGlobal), mFunction(aFunction) {
mozilla::HoldJSObjectsWithKey(this);
mArgs = std::move(aArguments);
}
NS_IMPL_CYCLE_COLLECTION_CLASS(CallbackTimeoutHandler)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(CallbackTimeoutHandler)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mGlobal)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mFunction)
tmp->ReleaseJSObjects();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(CallbackTimeoutHandler)
if (MOZ_UNLIKELY(cb.WantDebugInfo())) {
nsAutoCString name("CallbackTimeoutHandler");
JSObject* obj = tmp->mFunction->CallablePreserveColor();
JSFunction* fun =
JS_GetObjectFunction(js::UncheckedUnwrapWithoutExpose(obj));
if (fun && JS_GetMaybePartialFunctionId(fun)) {
JSLinearString* funId =
JS_ASSERT_STRING_IS_LINEAR(JS_GetMaybePartialFunctionId(fun));
size_t size = 1 + JS_PutEscapedLinearString(nullptr, 0, funId, 0);
char* funIdName = new char[size];
if (funIdName) {
JS_PutEscapedLinearString(funIdName, size, funId, 0);
name.AppendLiteral(" [");
name.Append(funIdName);
delete[] funIdName;
name.Append(']');
}
}
cb.DescribeRefCountedNode(tmp->mRefCnt.get(), name.get());
} else {
NS_IMPL_CYCLE_COLLECTION_DESCRIBE(CallbackTimeoutHandler,
tmp->mRefCnt.get())
}
// If we need to make TimeoutHandler CCed, don't call its Traverse method
// here, otherwise we ends up report same object twice if logging is on. See
// https://bugzilla.mozilla.org/show_bug.cgi?id=1588208.
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFunction)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(CallbackTimeoutHandler)
for (size_t i = 0; i < tmp->mArgs.Length(); ++i) {
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mArgs[i])
}
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CallbackTimeoutHandler)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(CallbackTimeoutHandler)
NS_IMPL_CYCLE_COLLECTING_RELEASE(CallbackTimeoutHandler)
void CallbackTimeoutHandler::ReleaseJSObjects() {
mArgs.Clear();
mozilla::DropJSObjectsWithKey(this);
}
bool CallbackTimeoutHandler::Call(const char* aExecutionReason) {
IgnoredErrorResult rv;
JS::Rooted<JS::Value> ignoredVal(RootingCx());
MOZ_KnownLive(mFunction)->Call(MOZ_KnownLive(mGlobal), mArgs, &ignoredVal, rv,
aExecutionReason);
return !rv.IsUncatchableException();
}
void CallbackTimeoutHandler::MarkForCC() { mFunction->MarkForCC(); }
void CallbackTimeoutHandler::GetDescription(nsACString& aOutString) {
mFunction->GetDescription(aOutString);
}
//-----------------------------------------------------------------------------
// DelayedJSDispatchableHandler
//-----------------------------------------------------------------------------
MOZ_CAN_RUN_SCRIPT bool DelayedJSDispatchableHandler::Call(
const char* /* unused */) {
MOZ_ASSERT(mDispatchable);
// We get the cx in whatever state, as if we have already shutdown
// then the notify task will already be cleared.
JSContext* cx = danger::GetJSContext();
JS::Dispatchable::Run(cx, std::move(mDispatchable),
JS::Dispatchable::NotShuttingDown);
return true;
}
DelayedJSDispatchableHandler::~DelayedJSDispatchableHandler() {
if (mDispatchable) {
// If we shutdown with the DelayedJSDispatchableHandler still holding
// the reference to mDispatchable, release it to the engine for cleanup.
// In the case of WaitAsyncTimeoutTask, this will clear the task, and
// delete itself.
JS::Dispatchable::ReleaseFailedTask(std::move(mDispatchable));
}
}
NS_IMPL_ISUPPORTS(DelayedJSDispatchableHandler, nsISupports)
} // namespace mozilla::dom
|
