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
|
/* -*- 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 "nsISupportsImpl.h"
#include "mozilla/Assertions.h"
#ifndef XPCOM_GLUE_AVOID_NSPR
# include "nsPrintfCString.h"
# include "nsThreadUtils.h"
#endif
using namespace mozilla;
nsresult NS_FASTCALL NS_TableDrivenQI(void* aThis, REFNSIID aIID,
void** aInstancePtr,
const QITableEntry* aEntries) {
do {
if (aIID.Equals(*aEntries->iid)) {
nsISupports* r = reinterpret_cast<nsISupports*>(
reinterpret_cast<char*>(aThis) + aEntries->offset);
NS_ADDREF(r);
*aInstancePtr = r;
return NS_OK;
}
++aEntries;
} while (aEntries->iid);
*aInstancePtr = nullptr;
return NS_ERROR_NO_INTERFACE;
}
#ifndef XPCOM_GLUE_AVOID_NSPR
# ifdef MOZ_THREAD_SAFETY_OWNERSHIP_CHECKS_SUPPORTED
nsAutoOwningThread::nsAutoOwningThread() : mThread(PR_GetCurrentThread()) {}
void nsAutoOwningThread::AssertCurrentThreadOwnsMe(const char* msg) const {
if (MOZ_UNLIKELY(!IsCurrentThread())) {
// `msg` is a string literal by construction.
MOZ_CRASH_UNSAFE(msg);
}
}
bool nsAutoOwningThread::IsCurrentThread() const {
return mThread == PR_GetCurrentThread();
}
nsAutoOwningEventTarget::nsAutoOwningEventTarget()
: mTarget(GetCurrentSerialEventTarget()) {
NS_ADDREF(mTarget);
}
nsAutoOwningEventTarget::nsAutoOwningEventTarget(
const nsAutoOwningEventTarget& aOther)
: mTarget(aOther.mTarget) {
NS_ADDREF(mTarget);
}
nsAutoOwningEventTarget& nsAutoOwningEventTarget::operator=(
const nsAutoOwningEventTarget& aRhs) {
nsISerialEventTarget* previous = std::exchange(mTarget, aRhs.mTarget);
NS_ADDREF(mTarget);
NS_RELEASE(previous);
return *this;
}
nsAutoOwningEventTarget::~nsAutoOwningEventTarget() { NS_RELEASE(mTarget); }
void nsAutoOwningEventTarget ::AssertCurrentThreadOwnsMe(
const char* msg) const {
if (MOZ_UNLIKELY(!IsCurrentThread())) {
// `msg` is a string literal by construction.
MOZ_CRASH_UNSAFE(msg);
}
}
bool nsAutoOwningEventTarget::IsCurrentThread() const {
return mTarget->IsOnCurrentThread();
}
# endif
namespace mozilla::detail {
class ProxyDeleteVoidRunnable final : public CancelableRunnable {
public:
ProxyDeleteVoidRunnable(const char* aName, void* aPtr,
DeleteVoidFunction* aDeleteFunc)
: CancelableRunnable(aName), mPtr(aPtr), mDeleteFunc(aDeleteFunc) {}
NS_IMETHOD Run() override {
if (mPtr) {
mDeleteFunc(mPtr);
mPtr = nullptr;
}
return NS_OK;
}
// Mimics the behaviour in `ProxyRelease`, freeing the resource when
// cancelled.
nsresult Cancel() override { return Run(); }
# ifdef MOZ_COLLECTING_RUNNABLE_TELEMETRY
NS_IMETHOD GetName(nsACString& aName) override {
if (mName) {
aName.Append(mName);
} else {
aName.AssignLiteral("ProxyDeleteVoidRunnable");
}
return NS_OK;
}
# endif
private:
~ProxyDeleteVoidRunnable() {
if (mPtr) {
# ifdef MOZ_COLLECTING_RUNNABLE_TELEMETRY
NS_WARNING(
nsPrintfCString(
"ProxyDeleteVoidRunnable for '%s' never run, leaking!", mName)
.get());
# else
NS_WARNING("ProxyDeleteVoidRunnable never run, leaking!");
# endif
}
}
void* mPtr;
DeleteVoidFunction* mDeleteFunc;
};
void ProxyDeleteVoid(const char* aName, nsISerialEventTarget* aTarget,
void* aPtr, DeleteVoidFunction* aDeleteFunc) {
MOZ_ASSERT(aName);
MOZ_ASSERT(aPtr);
MOZ_ASSERT(aDeleteFunc);
if (!aTarget) {
NS_WARNING(nsPrintfCString("no target for '%s', leaking!", aName).get());
return;
}
if (aTarget->IsOnCurrentThread()) {
aDeleteFunc(aPtr);
return;
}
nsresult rv = aTarget->Dispatch(
MakeAndAddRef<ProxyDeleteVoidRunnable>(aName, aPtr, aDeleteFunc),
NS_DISPATCH_NORMAL);
if (NS_FAILED(rv)) {
NS_WARNING(nsPrintfCString("failed to post '%s', leaking!", aName).get());
}
}
} // namespace mozilla::detail
#endif
|
