The Tor Browser / file comparison
comparison: js/src/jscrashformat.h
js/src/jscrashformat.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:eeab40af4f06 |
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * vim: set ts=8 sts=4 et sw=4 tw=99: | |
| 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/. */ | |
| 6 | |
| 7 #ifndef jscrashformat_h | |
| 8 #define jscrashformat_h | |
| 9 | |
| 10 namespace js { | |
| 11 namespace crash { | |
| 12 | |
| 13 static const int crash_cookie_len = 16; | |
| 14 static const char crash_cookie[crash_cookie_len] = "*J*S*CRASHDATA*"; | |
| 15 | |
| 16 /* These values are used for CrashHeader::id. */ | |
| 17 enum { | |
| 18 JS_CRASH_STACK_GC = 0x400, | |
| 19 JS_CRASH_STACK_ERROR = 0x401, | |
| 20 JS_CRASH_RING = 0x800 | |
| 21 }; | |
| 22 | |
| 23 /* | |
| 24 * All the data here will be stored directly in the minidump, so we use | |
| 25 * platform-independent types. We also ensure that the size of every field is a | |
| 26 * multiple of 8 bytes, to guarantee that they won't be padded. | |
| 27 */ | |
| 28 | |
| 29 struct CrashHeader | |
| 30 { | |
| 31 char cookie[crash_cookie_len]; | |
| 32 | |
| 33 /* id of the crash data, chosen from the enum above. */ | |
| 34 uint64_t id; | |
| 35 | |
| 36 CrashHeader(uint64_t id) : id(id) { memcpy(cookie, crash_cookie, crash_cookie_len); } | |
| 37 }; | |
| 38 | |
| 39 struct CrashRegisters | |
| 40 { | |
| 41 uint64_t ip, sp, bp; | |
| 42 }; | |
| 43 | |
| 44 static const int crash_buffer_size = 32 * 1024; | |
| 45 | |
| 46 struct CrashStack | |
| 47 { | |
| 48 CrashStack(uint64_t id) : header(id) {} | |
| 49 | |
| 50 CrashHeader header; | |
| 51 uint64_t snaptime; /* Unix time when the stack was snapshotted. */ | |
| 52 CrashRegisters regs; /* Register contents for the snapshot. */ | |
| 53 uint64_t stack_base; /* Base address of stack at the time of snapshot. */ | |
| 54 uint64_t stack_len; /* Extent of the stack. */ | |
| 55 char stack[crash_buffer_size]; /* Contents of the stack. */ | |
| 56 }; | |
| 57 | |
| 58 struct CrashRing | |
| 59 { | |
| 60 CrashRing(uint64_t id) : header(id), offset(0) { memset(buffer, 0, sizeof(buffer)); } | |
| 61 | |
| 62 CrashHeader header; | |
| 63 uint64_t offset; /* Next byte to be written in the buffer. */ | |
| 64 char buffer[crash_buffer_size]; | |
| 65 }; | |
| 66 | |
| 67 /* These are the tag values for each entry in the CrashRing. */ | |
| 68 enum { | |
| 69 JS_CRASH_TAG_GC = 0x200 | |
| 70 }; | |
| 71 | |
| 72 } /* namespace crash */ | |
| 73 } /* namespace js */ | |
| 74 | |
| 75 #endif /* jscrashformat_h */ |
