tools/trace-malloc/lib/nsWinTraceMalloc.cpp@ac0c01689b40
tools/trace-malloc/lib/nsWinTraceMalloc.cpp
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #include <stdio.h>
8 #include <stdlib.h>
10 #include "prinrval.h"
11 #include "prlock.h"
12 #include "nscore.h"
14 #include "nsDebugHelpWin32.h"
15 #include "nsTraceMallocCallbacks.h"
17 /***************************************************************************/
18 // shows how to use the dhw stuff to hook imported functions
20 #if _MSC_VER < 1300
21 #define NS_DEBUG_CRT "MSVCRTD.dll"
22 #elif _MSC_VER == 1300
23 #define NS_DEBUG_CRT "msvcr70d.dll"
24 #elif _MSC_VER == 1310
25 #define NS_DEBUG_CRT "msvcr71d.dll"
26 #elif _MSC_VER == 1400
27 #define NS_DEBUG_CRT "msvcr80d.dll"
28 #elif _MSC_VER == 1500
29 #define NS_DEBUG_CRT "msvcr90d.dll"
30 #elif _MSC_VER == 1600
31 #define NS_DEBUG_CRT "msvcr100d.dll"
32 #elif _MSC_VER == 1700
33 #define NS_DEBUG_CRT "msvcr110d.dll"
34 #elif _MSC_VER == 1800
35 #define NS_DEBUG_CRT "msvcr120d.dll"
36 #else
37 #error "Don't know filename of MSVC debug library."
38 #endif
40 decltype(malloc) dhw_malloc;
42 DHWImportHooker &getMallocHooker()
43 {
44 static DHWImportHooker gMallocHooker(NS_DEBUG_CRT, "malloc", (PROC) dhw_malloc);
45 return gMallocHooker;
46 }
48 void * __cdecl dhw_malloc( size_t size )
49 {
50 tm_thread *t = tm_get_thread();
51 ++t->suppress_tracing;
52 uint32_t start = PR_IntervalNow();
53 void* result = DHW_ORIGINAL(malloc, getMallocHooker())(size);
54 uint32_t end = PR_IntervalNow();
55 --t->suppress_tracing;
56 MallocCallback(result, size, start, end, t);
57 return result;
58 }
60 decltype(calloc) dhw_calloc;
62 DHWImportHooker &getCallocHooker()
63 {
64 static DHWImportHooker gCallocHooker(NS_DEBUG_CRT, "calloc", (PROC) dhw_calloc);
65 return gCallocHooker;
66 }
68 void * __cdecl dhw_calloc( size_t count, size_t size )
69 {
70 tm_thread *t = tm_get_thread();
71 ++t->suppress_tracing;
72 uint32_t start = PR_IntervalNow();
73 void* result = DHW_ORIGINAL(calloc, getCallocHooker())(count,size);
74 uint32_t end = PR_IntervalNow();
75 --t->suppress_tracing;
76 CallocCallback(result, count, size, start, end, t);
77 return result;
78 }
80 decltype(free) dhw_free;
81 DHWImportHooker &getFreeHooker()
82 {
83 static DHWImportHooker gFreeHooker(NS_DEBUG_CRT, "free", (PROC) dhw_free);
84 return gFreeHooker;
85 }
87 void __cdecl dhw_free( void* p )
88 {
89 tm_thread *t = tm_get_thread();
90 ++t->suppress_tracing;
91 uint32_t start = PR_IntervalNow();
92 DHW_ORIGINAL(free, getFreeHooker())(p);
93 uint32_t end = PR_IntervalNow();
94 --t->suppress_tracing;
95 /* FIXME bug 392008: We could race with reallocation of p. */
96 FreeCallback(p, start, end, t);
97 }
100 decltype(realloc) dhw_realloc;
101 DHWImportHooker &getReallocHooker()
102 {
103 static DHWImportHooker gReallocHooker(NS_DEBUG_CRT, "realloc", (PROC) dhw_realloc);
104 return gReallocHooker;
105 }
107 void * __cdecl dhw_realloc(void * pin, size_t size)
108 {
109 tm_thread *t = tm_get_thread();
110 ++t->suppress_tracing;
111 uint32_t start = PR_IntervalNow();
112 void* pout = DHW_ORIGINAL(realloc, getReallocHooker())(pin, size);
113 uint32_t end = PR_IntervalNow();
114 --t->suppress_tracing;
115 /* FIXME bug 392008: We could race with reallocation of pin. */
116 ReallocCallback(pin, pout, size, start, end, t);
117 return pout;
118 }
120 // Note the mangled name!
121 void * __cdecl dhw_new(size_t size);
122 DHWImportHooker &getNewHooker()
123 {
124 static DHWImportHooker gNewHooker(NS_DEBUG_CRT, "??2@YAPAXI@Z", (PROC) dhw_new);
125 return gNewHooker;
126 }
128 void * __cdecl dhw_new(size_t size)
129 {
130 tm_thread *t = tm_get_thread();
131 ++t->suppress_tracing;
132 uint32_t start = PR_IntervalNow();
133 void* result = DHW_ORIGINAL(dhw_new, getNewHooker())(size);
134 uint32_t end = PR_IntervalNow();
135 --t->suppress_tracing;
136 MallocCallback(result, size, start, end, t);//do we need a different one for new?
137 return result;
138 }
140 // Note the mangled name!
141 void __cdecl dhw_delete(void* p);
142 DHWImportHooker &getDeleteHooker()
143 {
144 static DHWImportHooker gDeleteHooker(NS_DEBUG_CRT, "??3@YAXPAX@Z", (PROC) dhw_delete);
145 return gDeleteHooker;
146 }
148 void __cdecl dhw_delete(void* p)
149 {
150 tm_thread *t = tm_get_thread();
151 ++t->suppress_tracing;
152 uint32_t start = PR_IntervalNow();
153 DHW_ORIGINAL(dhw_delete, getDeleteHooker())(p);
154 uint32_t end = PR_IntervalNow();
155 --t->suppress_tracing;
156 FreeCallback(p, start, end, t);
157 }
159 // Note the mangled name!
160 void * __cdecl dhw_vec_new(size_t size);
161 DHWImportHooker &getVecNewHooker()
162 {
163 static DHWImportHooker gVecNewHooker(NS_DEBUG_CRT, "??_U@YAPAXI@Z", (PROC) dhw_vec_new);
164 return gVecNewHooker;
165 }
167 void * __cdecl dhw_vec_new(size_t size)
168 {
169 tm_thread *t = tm_get_thread();
170 ++t->suppress_tracing; // need to suppress since new[] calls new
171 uint32_t start = PR_IntervalNow();
172 void* result = DHW_ORIGINAL(dhw_vec_new, getVecNewHooker())(size);
173 uint32_t end = PR_IntervalNow();
174 --t->suppress_tracing;
175 MallocCallback(result, size, start, end, t);//do we need a different one for new[]?
176 return result;
177 }
179 // Note the mangled name!
180 void __cdecl dhw_vec_delete(void* p);
181 DHWImportHooker &getVecDeleteHooker()
182 {
183 static DHWImportHooker gVecDeleteHooker(NS_DEBUG_CRT, "??_V@YAXPAX@Z", (PROC) dhw_vec_delete);
184 return gVecDeleteHooker;
185 }
187 void __cdecl dhw_vec_delete(void* p)
188 {
189 tm_thread *t = tm_get_thread();
190 ++t->suppress_tracing;
191 uint32_t start = PR_IntervalNow();
192 DHW_ORIGINAL(dhw_vec_delete, getVecDeleteHooker())(p);
193 uint32_t end = PR_IntervalNow();
194 --t->suppress_tracing;
195 FreeCallback(p, start, end, t);
196 }
198 /*C Callbacks*/
199 PR_IMPLEMENT(void)
200 StartupHooker()
201 {
202 //run through get all hookers
203 DHWImportHooker &loadlibraryW = DHWImportHooker::getLoadLibraryWHooker();
204 DHWImportHooker &loadlibraryExW = DHWImportHooker::getLoadLibraryExWHooker();
205 DHWImportHooker &loadlibraryA = DHWImportHooker::getLoadLibraryAHooker();
206 DHWImportHooker &loadlibraryExA = DHWImportHooker::getLoadLibraryExAHooker();
207 DHWImportHooker &mallochooker = getMallocHooker();
208 DHWImportHooker &reallochooker = getReallocHooker();
209 DHWImportHooker &callochooker = getCallocHooker();
210 DHWImportHooker &freehooker = getFreeHooker();
211 DHWImportHooker &newhooker = getNewHooker();
212 DHWImportHooker &deletehooker = getDeleteHooker();
213 DHWImportHooker &vecnewhooker = getVecNewHooker();
214 DHWImportHooker &vecdeletehooker = getVecDeleteHooker();
215 printf("Startup Hooker\n");
216 }
218 PR_IMPLEMENT(void)
219 ShutdownHooker()
220 {
221 }
223 extern "C" {
224 void* dhw_orig_malloc(size_t);
225 void* dhw_orig_calloc(size_t, size_t);
226 void* dhw_orig_realloc(void*, size_t);
227 void dhw_orig_free(void*);
228 }
230 void*
231 dhw_orig_malloc(size_t size)
232 {
233 return DHW_ORIGINAL(malloc, getMallocHooker())(size);
234 }
236 void*
237 dhw_orig_calloc(size_t count, size_t size)
238 {
239 return DHW_ORIGINAL(calloc, getCallocHooker())(count,size);
240 }
242 void*
243 dhw_orig_realloc(void* pin, size_t size)
244 {
245 return DHW_ORIGINAL(realloc, getReallocHooker())(pin, size);
246 }
248 void
249 dhw_orig_free(void* p)
250 {
251 DHW_ORIGINAL(free, getFreeHooker())(p);
252 }
