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
199
200
201
202
203
204
205
206
207
208
209
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef OSL_DIAGNOSE_HXX_INCLUDED
#define OSL_DIAGNOSE_HXX_INCLUDED
#include "sal/config.h"
#include <functional>
#include <typeinfo>
#ifndef HAVE_CXX0X
#define BOOST_NO_0X_HDR_TYPEINDEX
#endif
#include "boost/unordered_set.hpp"
#include "osl/diagnose.h"
#include "osl/interlck.h"
#include "osl/mutex.hxx"
#include "rtl/allocator.hxx"
#include "rtl/instance.hxx"
#include "sal/log.hxx"
#include "sal/saldllapi.h"
#include "sal/types.h"
/// @cond INTERNAL
namespace osl {
namespace detail {
struct ObjectRegistryData;
} // namespace detail
} // namespace osl
extern "C" {
SAL_DLLPUBLIC bool SAL_CALL osl_detail_ObjectRegistry_storeAddresses(
char const* pName )
SAL_THROW_EXTERN_C();
SAL_DLLPUBLIC bool SAL_CALL osl_detail_ObjectRegistry_checkObjectCount(
::osl::detail::ObjectRegistryData const& rData, ::std::size_t nExpected )
SAL_THROW_EXTERN_C();
SAL_DLLPUBLIC void SAL_CALL osl_detail_ObjectRegistry_registerObject(
::osl::detail::ObjectRegistryData & rData, void const* pObj )
SAL_THROW_EXTERN_C();
SAL_DLLPUBLIC void SAL_CALL osl_detail_ObjectRegistry_revokeObject(
::osl::detail::ObjectRegistryData & rData, void const* pObj )
SAL_THROW_EXTERN_C();
// These functions presumably should not be extern "C", but changing
// that would break binary compatibility.
#ifdef __clang__
#pragma clang diagnostic push
// Guard against slightly older clang versions that don't have
// -Wreturn-type-c-linkage...
#pragma clang diagnostic ignored "-Wunknown-pragmas"
#pragma clang diagnostic ignored "-Wreturn-type-c-linkage"
#endif
SAL_DLLPUBLIC ::osl::Mutex & SAL_CALL osl_detail_ObjectRegistry_getMutex()
SAL_THROW_EXTERN_C();
#ifdef __clang__
#pragma clang diagnostic pop
#endif
} // extern "C"
namespace osl {
namespace detail {
struct VoidPtrHash : ::std::unary_function<void const*, ::std::size_t> {
::std::size_t operator()( void const* p ) const {
::std::size_t const d = static_cast< ::std::size_t >(
reinterpret_cast< ::std::ptrdiff_t >(p) );
return d + (d >> 3);
}
};
typedef ::boost::unordered_set<void const*, VoidPtrHash, ::std::equal_to<void const*>,
::rtl::Allocator<void const*> > VoidPointerSet;
struct ObjectRegistryData {
ObjectRegistryData( ::std::type_info const& rTypeInfo )
: m_pName(rTypeInfo.name()), m_nCount(0), m_addresses(),
m_bStoreAddresses(osl_detail_ObjectRegistry_storeAddresses(m_pName)){}
char const* const m_pName;
oslInterlockedCount m_nCount;
VoidPointerSet m_addresses;
bool const m_bStoreAddresses;
};
template <typename T>
class ObjectRegistry
{
public:
ObjectRegistry() : m_data( typeid(T) ) {}
~ObjectRegistry() { checkObjectCount(0); }
bool checkObjectCount( ::std::size_t nExpected ) const {
bool const bRet = osl_detail_ObjectRegistry_checkObjectCount(
m_data, nExpected );
if (!bRet && m_data.m_bStoreAddresses) {
MutexGuard const guard( osl_detail_ObjectRegistry_getMutex() );
// following loop is for debugging purposes, iterating over map:
VoidPointerSet::const_iterator iPos(m_data.m_addresses.begin());
VoidPointerSet::const_iterator const iEnd(m_data.m_addresses.end());
for ( ; iPos != iEnd; ++iPos ) {
SAL_WARN_IF( *iPos == 0, "sal.debug", "null pointer" );
}
}
return bRet;
}
void registerObject( void const* pObj ) {
osl_detail_ObjectRegistry_registerObject(m_data, pObj);
}
void revokeObject( void const* pObj ) {
osl_detail_ObjectRegistry_revokeObject(m_data, pObj);
}
private:
// not impl:
ObjectRegistry( ObjectRegistry const& );
ObjectRegistry const& operator=( ObjectRegistry const& );
ObjectRegistryData m_data;
};
} // namespace detail
/** Helper class which indicates leaking object(s) of a particular class in
non-pro builds; use e.g.
<pre>
class MyClass : private osl::DebugBase<MyClass> {...};
</pre>
Using the environment variable
OSL_DEBUGBASE_STORE_ADDRESSES=MyClass;YourClass;...
you can specify a ';'-separated list of strings matching to class names
(or "all" for all classes), for which DebugBase stores addresses to created
objects instead of just counting them. This enables you to iterate over
leaking objects in your debugger.
@tparam InheritingClassT binds the template instance to that class
@attention Use at own risk.
For now this is just public (yet unpublished) API and may change
in the future!
*/
template <typename InheritingClassT>
class DebugBase
{
public:
#if OSL_DEBUG_LEVEL <= 0
static bool checkObjectCount( ::std::size_t = 0 ) { return true; }
#else // OSL_DEBUG_LEVEL > 0
/** @return whether the expected number of objects is alive,
else this function SAL_WARNs
*/
static bool checkObjectCount( ::std::size_t nExpected = 0 ) {
return StaticObjectRegistry::get().checkObjectCount(nExpected);
}
protected:
DebugBase() {
StaticObjectRegistry::get().registerObject( this );
}
~DebugBase() {
StaticObjectRegistry::get().revokeObject( this );
}
private:
struct StaticObjectRegistry
: ::rtl::Static<detail::ObjectRegistry<InheritingClassT>,
StaticObjectRegistry> {};
#endif
};
} // namespace osl
/// @endcond
#endif // ! defined(OSL_DIAGNOSE_HXX_INCLUDED)
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
