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
|
/**
* @file llwindebug.cpp
* @brief Windows debugging functions
*
* $LicenseInfo:firstyear=2004&license=viewergpl$
*
* Copyright (c) 2004-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#include "llviewerprecompiledheaders.h"
#include "llwindebug.h"
#include "lldir.h"
// based on dbghelp.h
typedef BOOL (WINAPI *MINIDUMPWRITEDUMP)(HANDLE hProcess, DWORD dwPid, HANDLE hFile, MINIDUMP_TYPE DumpType,
CONST PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam,
CONST PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam,
CONST PMINIDUMP_CALLBACK_INFORMATION CallbackParam
);
MINIDUMPWRITEDUMP f_mdwp = NULL;
class LLMemoryReserve {
public:
LLMemoryReserve();
~LLMemoryReserve();
void reserve();
void release();
protected:
unsigned char *mReserve;
static const size_t MEMORY_RESERVATION_SIZE;
};
LLMemoryReserve::LLMemoryReserve() :
mReserve(NULL)
{
};
LLMemoryReserve::~LLMemoryReserve()
{
release();
}
// I dunno - this just seemed like a pretty good value.
const size_t LLMemoryReserve::MEMORY_RESERVATION_SIZE = 5 * 1024 * 1024;
void LLMemoryReserve::reserve()
{
if(NULL == mReserve)
mReserve = new unsigned char[MEMORY_RESERVATION_SIZE];
};
void LLMemoryReserve::release()
{
delete [] mReserve;
mReserve = NULL;
};
static LLMemoryReserve gEmergencyMemoryReserve;
LONG NTAPI vectoredHandler(PEXCEPTION_POINTERS exception_infop)
{
LLWinDebug::instance().generateMinidump(exception_infop);
return EXCEPTION_CONTINUE_SEARCH;
}
// static
void LLWinDebug::init()
{
static bool s_first_run = true;
// Load the dbghelp dll now, instead of waiting for the crash.
// Less potential for stack mangling
if (s_first_run)
{
// First, try loading from the directory that the app resides in.
std::string local_dll_name = gDirUtilp->findFile("dbghelp.dll", gDirUtilp->getWorkingDir(), gDirUtilp->getExecutableDir());
HMODULE hDll = NULL;
hDll = LoadLibraryA(local_dll_name.c_str());
if (!hDll)
{
hDll = LoadLibrary(L"dbghelp.dll");
}
if (!hDll)
{
LL_WARNS("AppInit") << "Couldn't find dbghelp.dll!" << LL_ENDL;
}
else
{
f_mdwp = (MINIDUMPWRITEDUMP) GetProcAddress(hDll, "MiniDumpWriteDump");
if (!f_mdwp)
{
FreeLibrary(hDll);
hDll = NULL;
}
}
gEmergencyMemoryReserve.reserve();
s_first_run = false;
// Add this exeption hanlder to save windows style minidump.
AddVectoredExceptionHandler(0, &vectoredHandler);
}
}
void LLWinDebug::writeDumpToFile(MINIDUMP_TYPE type, MINIDUMP_EXCEPTION_INFORMATION *ExInfop, const std::string& filename)
{
if(f_mdwp == NULL || gDirUtilp == NULL)
{
return;
}
else
{
std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, filename);
HANDLE hFile = CreateFileA(dump_path.c_str(),
GENERIC_WRITE,
FILE_SHARE_WRITE,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (hFile != INVALID_HANDLE_VALUE)
{
// Write the dump, ignoring the return value
f_mdwp(GetCurrentProcess(),
GetCurrentProcessId(),
hFile,
type,
ExInfop,
NULL,
NULL);
CloseHandle(hFile);
}
}
}
// static
void LLWinDebug::generateMinidump(struct _EXCEPTION_POINTERS *exception_infop)
{
std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,
"SecondLifeException");
if (exception_infop)
{
// Since there is exception info... Release the hounds.
gEmergencyMemoryReserve.release();
_MINIDUMP_EXCEPTION_INFORMATION ExInfo;
ExInfo.ThreadId = ::GetCurrentThreadId();
ExInfo.ExceptionPointers = exception_infop;
ExInfo.ClientPointers = NULL;
writeDumpToFile((MINIDUMP_TYPE)(MiniDumpWithDataSegs | MiniDumpWithIndirectlyReferencedMemory), &ExInfo, "SecondLife.dmp");
}
}
|
