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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <atlbase.h>
#include <atlapp.h>
#include <malloc.h>
#include <new.h>
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/icu_util.h"
#include "base/message_loop.h"
#include "base/path_service.h"
#include "base/stats_table.h"
#include "base/string_util.h"
#include "base/win_util.h"
#include "chrome/browser/render_process_host.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_counters.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/logging_chrome.h"
#include "chrome/common/resource_bundle.h"
#include "sandbox/src/sandbox.h"
#include "tools/memory_watcher/memory_watcher.h"
extern int BrowserMain(CommandLine&, sandbox::BrokerServices*);
extern int RendererMain(CommandLine&, sandbox::TargetServices*);
extern int PluginMain(CommandLine&, sandbox::TargetServices*);
// TODO(erikkay): isn't this already defined somewhere?
#define DLLEXPORT __declspec(dllexport)
// We use extern C for the prototype DLLEXPORT to avoid C++ name mangling.
extern "C" {
DLLEXPORT int __cdecl ChromeMain(HINSTANCE instance,
sandbox::SandboxInterfaceInfo* sandbox_info,
TCHAR* command_line);
}
namespace {
const wchar_t kProfilingDll[] = L"memory_watcher.dll";
// Load the memory profiling DLL. All it needs to be activated
// is to be loaded. Return true on success, false otherwise.
bool LoadMemoryProfiler() {
HMODULE prof_module = LoadLibrary(kProfilingDll);
return prof_module != NULL;
}
CAppModule _Module;
#pragma optimize("", off)
// Handlers for invalid parameter and pure call. They generate a breakpoint to
// tell breakpad that it needs to dump the process.
void InvalidParameter(const wchar_t* expression, const wchar_t* function,
const wchar_t* file, unsigned int line,
uintptr_t reserved) {
__debugbreak();
}
void PureCall() {
__debugbreak();
}
int OnNoMemory(size_t memory_size) {
__debugbreak();
// Return memory_size so it is not optimized out. Make sure the return value
// is at least 1 so malloc/new is retried, especially useful when under a
// debugger.
return memory_size ? static_cast<int>(memory_size) : 1;
}
// Handlers to silently dump the current process when there is an assert in
// chrome.
void ChromeAssert(const std::string& str) {
// Get the breakpad pointer from chrome.exe
typedef void (__stdcall *DumpProcessFunction)();
DumpProcessFunction DumpProcess = reinterpret_cast<DumpProcessFunction>(
::GetProcAddress(::GetModuleHandle(L"chrome.exe"), "DumpProcess"));
if (DumpProcess)
DumpProcess();
}
#pragma optimize("", on)
} // namespace
DLLEXPORT int __cdecl ChromeMain(HINSTANCE instance,
sandbox::SandboxInterfaceInfo* sandbox_info,
TCHAR* command_line) {
// Register the invalid param handler and pure call handler to be able to
// notify breakpad when it happens.
_set_invalid_parameter_handler(InvalidParameter);
_set_purecall_handler(PureCall);
// Gather allocation failure.
_set_new_handler(&OnNoMemory);
// Make sure malloc() calls the new handler too.
_set_new_mode(1);
// The exit manager is in charge of calling the dtors of singleton objects.
base::AtExitManager exit_manager;
// Initialize the command line.
CommandLine parsed_command_line;
#ifdef _CRTDBG_MAP_ALLOC
_CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
_CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
#else
if (!parsed_command_line.HasSwitch(switches::kDisableBreakpad)) {
_CrtSetReportMode(_CRT_ASSERT, 0);
}
#endif
// Enable the low fragmentation heap for the CRT heap. The heap is not changed
// if the process is run under the debugger is enabled or if certain gflags
// are set.
bool use_lfh = false;
if (parsed_command_line.HasSwitch(switches::kUseLowFragHeapCrt))
use_lfh = parsed_command_line.GetSwitchValue(switches::kUseLowFragHeapCrt)
!= L"false";
if (use_lfh) {
void* crt_heap = reinterpret_cast<void*>(_get_heap_handle());
ULONG enable_lfh = 2;
HeapSetInformation(crt_heap, HeapCompatibilityInformation,
&enable_lfh, sizeof(enable_lfh));
}
// Initialize the Chrome path provider.
chrome::RegisterPathProvider();
// Initialize the Stats Counters table. With this initialized,
// the StatsViewer can be utilized to read counters outside of
// Chrome. These lines can be commented out to effectively turn
// counters 'off'. The table is created and exists for the life
// of the process. It is not cleaned up.
StatsTable *stats_table = new StatsTable(chrome::kStatsFilename,
chrome::kStatsMaxThreads, chrome::kStatsMaxCounters);
StatsTable::set_current(stats_table);
StatsScope<StatsCounterTimer>
startup_timer(chrome::Counters::chrome_main());
// Enable the heap profiler as early as possible!
if (parsed_command_line.HasSwitch(switches::kMemoryProfiling))
if (!LoadMemoryProfiler())
exit(-1);
// Enable Message Loop related state asap.
if (parsed_command_line.HasSwitch(switches::kMessageLoopHistogrammer))
MessageLoop::EnableHistogrammer(true);
sandbox::TargetServices* target_services = NULL;
sandbox::BrokerServices* broker_services = NULL;
if (sandbox_info) {
target_services = sandbox_info->target_services;
broker_services = sandbox_info->broker_services;
}
std::wstring process_type =
parsed_command_line.GetSwitchValue(switches::kProcessType);
// Checks if the sandbox is enabled in this process and initializes it if this
// is the case. The crash handler depends on this so it has to be done before
// its initialization.
if (target_services && !parsed_command_line.HasSwitch(switches::kNoSandbox)) {
if ((process_type == switches::kRendererProcess) ||
(process_type == switches::kPluginProcess &&
parsed_command_line.HasSwitch(switches::kSafePlugins))) {
target_services->Init();
}
}
_Module.Init(NULL, instance);
// Notice a user data directory override if any
const std::wstring user_data_dir =
parsed_command_line.GetSwitchValue(switches::kUserDataDir);
if (!user_data_dir.empty())
PathService::Override(chrome::DIR_USER_DATA, user_data_dir);
bool single_process =
parsed_command_line.HasSwitch(switches::kSingleProcess);
if (single_process)
RenderProcessHost::set_run_renderer_in_process(true);
bool icu_result = icu_util::Initialize();
CHECK(icu_result);
logging::OldFileDeletionState file_state =
logging::APPEND_TO_OLD_LOG_FILE;
if (process_type.empty()) {
file_state = logging::DELETE_OLD_LOG_FILE;
}
logging::InitChromeLogging(parsed_command_line, file_state);
#ifdef NDEBUG
if (parsed_command_line.HasSwitch(switches::kSilentDumpOnDCHECK) &&
parsed_command_line.HasSwitch(switches::kEnableDCHECK)) {
logging::SetLogAssertHandler(ChromeAssert);
}
#endif // NDEBUG
if (!process_type.empty()) {
// Initialize ResourceBundle which handles files loaded from external
// sources. The language should have been passed in to us from the
// browser process as a command line flag.
ResourceBundle::InitSharedInstance(std::wstring());
}
startup_timer.Stop(); // End of Startup Time Measurement.
int rv;
if (process_type == switches::kRendererProcess) {
rv = RendererMain(parsed_command_line, target_services);
} else if (process_type == switches::kPluginProcess) {
rv = PluginMain(parsed_command_line, target_services);
} else if (process_type.empty()) {
int ole_result = OleInitialize(NULL);
DCHECK(ole_result == S_OK);
rv = BrowserMain(parsed_command_line, broker_services);
OleUninitialize();
} else {
NOTREACHED() << "Unknown process type";
rv = -1;
}
if (!process_type.empty()) {
ResourceBundle::CleanupSharedInstance();
}
#ifdef _CRTDBG_MAP_ALLOC
_CrtDumpMemoryLeaks();
#endif // _CRTDBG_MAP_ALLOC
_Module.Term();
logging::CleanupChromeLogging();
return rv;
}
|
