LCOV - app.info - js/src/jscrashformat.h

LCOV - code coverage report
| Current view: | directory - js/src - jscrashformat.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 3 | 3 | 100.0 %
| Date: | 2012-04-07 | Functions: | 3 | 3 | 100.0 %

           1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
           2                 :  * vim: set ts=4 sw=4 et tw=99:
           3                 :  *
           4                 :  * ***** BEGIN LICENSE BLOCK *****
           5                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           6                 :  *
           7                 :  * The contents of this file are subject to the Mozilla Public License Version
           8                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           9                 :  * the License. You may obtain a copy of the License at
          10                 :  * http://www.mozilla.org/MPL/
          11                 :  *
          12                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          13                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          14                 :  * for the specific language governing rights and limitations under the
          15                 :  * License.
          16                 :  *
          17                 :  * The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
          18                 :  * May 28, 2008.
          19                 :  *
          20                 :  * The Initial Developer of the Original Code is
          21                 :  *   Mozilla Foundation
          22                 :  * Portions created by the Initial Developer are Copyright (C) 2011
          23                 :  * the Initial Developer. All Rights Reserved.
          24                 :  *
          25                 :  * Contributor(s):
          26                 :  *
          27                 :  * Alternatively, the contents of this file may be used under the terms of
          28                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
          29                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          31                 :  * of those above. If you wish to allow use of your version of this file only
          32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          33                 :  * use your version of this file under the terms of the MPL, indicate your
          34                 :  * decision by deleting the provisions above and replace them with the notice
          35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          36                 :  * the provisions above, a recipient may use your version of this file under
          37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          38                 :  *
          39                 :  * ***** END LICENSE BLOCK ***** */
          40                 :
          41                 : #ifndef jscrashformat_h___
          42                 : #define jscrashformat_h___
          43                 :
          44                 : #include <string.h>
          45                 :
          46                 : namespace js {
          47                 : namespace crash {
          48                 :
          49                 : const static int crash_cookie_len = 16;
          50                 : const static char crash_cookie[crash_cookie_len] = "*J*S*CRASHDATA*";
          51                 :
          52                 : /* These values are used for CrashHeader::id. */
          53                 : enum {
          54                 :     JS_CRASH_STACK_GC = 0x400,
          55                 :     JS_CRASH_STACK_ERROR = 0x401,
          56                 :     JS_CRASH_RING = 0x800
          57                 : };
          58                 :
          59                 : /*
          60                 :  * All the data here will be stored directly in the minidump, so we use
          61                 :  * platform-independent types. We also ensure that the size of every field is a
          62                 :  * multiple of 8 bytes, to guarantee that they won't be padded.
          63                 :  */
          64                 :
          65                 : struct CrashHeader
          66                 : {
          67                 :     char cookie[crash_cookie_len];
          68                 :
          69                 :     /* id of the crash data, chosen from the enum above. */
          70                 :     uint64_t id;
          71                 :
          72           56001 :     CrashHeader(uint64_t id) : id(id) { memcpy(cookie, crash_cookie, crash_cookie_len); }
          73                 : };
          74                 :
          75                 : struct CrashRegisters
          76                 : {
          77                 :     uint64_t ip, sp, bp;
          78                 : };
          79                 :
          80                 : const static int crash_buffer_size = 32 * 1024;
          81                 :
          82                 : struct CrashStack
          83                 : {
          84           37334 :     CrashStack(uint64_t id) : header(id) {}
          85                 :
          86                 :     CrashHeader header;
          87                 :     uint64_t snaptime;    /* Unix time when the stack was snapshotted. */
          88                 :     CrashRegisters regs;  /* Register contents for the snapshot. */
          89                 :     uint64_t stack_base;  /* Base address of stack at the time of snapshot. */
          90                 :     uint64_t stack_len;   /* Extent of the stack. */
          91                 :     char stack[crash_buffer_size]; /* Contents of the stack. */
          92                 : };
          93                 :
          94                 : struct CrashRing
          95                 : {
          96           18667 :     CrashRing(uint64_t id) : header(id), offset(0) { memset(buffer, 0, sizeof(buffer)); }
          97                 :
          98                 :     CrashHeader header;
          99                 :     uint64_t offset; /* Next byte to be written in the buffer. */
         100                 :     char buffer[crash_buffer_size];
         101                 : };
         102                 :
         103                 : /* These are the tag values for each entry in the CrashRing. */
         104                 : enum {
         105                 :     JS_CRASH_TAG_GC = 0x200
         106                 : };
         107                 :
         108                 : } /* namespace crash */
         109                 : } /* namespace js */
         110                 :
         111                 : #endif

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