ipc/chromium/src/base/debug_util.h@6474c204b198 (annotated)
ipc/chromium/src/base/debug_util.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Copyright (c) 2006-2009 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | // This is a cross platform interface for helper functions related to debuggers. |
| michael@0 | 6 | // You should use this to test if you're running under a debugger, and if you |
| michael@0 | 7 | // would like to yield (breakpoint) into the debugger. |
| michael@0 | 8 | |
| michael@0 | 9 | #ifndef BASE_DEBUG_UTIL_H_ |
| michael@0 | 10 | #define BASE_DEBUG_UTIL_H_ |
| michael@0 | 11 | |
| michael@0 | 12 | #include <ostream> |
| michael@0 | 13 | #include <vector> |
| michael@0 | 14 | |
| michael@0 | 15 | #include "base/basictypes.h" |
| michael@0 | 16 | |
| michael@0 | 17 | // A stacktrace can be helpful in debugging. For example, you can include a |
| michael@0 | 18 | // stacktrace member in a object (probably around #ifndef NDEBUG) so that you |
| michael@0 | 19 | // can later see where the given object was created from. |
| michael@0 | 20 | class StackTrace { |
| michael@0 | 21 | public: |
| michael@0 | 22 | // Create a stacktrace from the current location |
| michael@0 | 23 | StackTrace(); |
| michael@0 | 24 | // Get an array of instruction pointer values. |
| michael@0 | 25 | // count: (output) the number of elements in the returned array |
| michael@0 | 26 | const void *const *Addresses(size_t* count); |
| michael@0 | 27 | // Print a backtrace to stderr |
| michael@0 | 28 | void PrintBacktrace(); |
| michael@0 | 29 | |
| michael@0 | 30 | // Resolve backtrace to symbols and write to stream. |
| michael@0 | 31 | void OutputToStream(std::ostream* os); |
| michael@0 | 32 | |
| michael@0 | 33 | private: |
| michael@0 | 34 | std::vector<void*> trace_; |
| michael@0 | 35 | |
| michael@0 | 36 | DISALLOW_EVIL_CONSTRUCTORS(StackTrace); |
| michael@0 | 37 | }; |
| michael@0 | 38 | |
| michael@0 | 39 | class DebugUtil { |
| michael@0 | 40 | public: |
| michael@0 | 41 | // Starts the registered system-wide JIT debugger to attach it to specified |
| michael@0 | 42 | // process. |
| michael@0 | 43 | static bool SpawnDebuggerOnProcess(unsigned process_id); |
| michael@0 | 44 | |
| michael@0 | 45 | // Waits wait_seconds seconds for a debugger to attach to the current process. |
| michael@0 | 46 | // When silent is false, an exception is thrown when a debugger is detected. |
| michael@0 | 47 | static bool WaitForDebugger(int wait_seconds, bool silent); |
| michael@0 | 48 | |
| michael@0 | 49 | // Are we running under a debugger? |
| michael@0 | 50 | // On OS X, the underlying mechanism doesn't work when the sandbox is enabled. |
| michael@0 | 51 | // To get around this, this function caches its value. |
| michael@0 | 52 | // WARNING: Because of this, on OS X, a call MUST be made to this function |
| michael@0 | 53 | // BEFORE the sandbox is enabled. |
| michael@0 | 54 | static bool BeingDebugged(); |
| michael@0 | 55 | |
| michael@0 | 56 | // Break into the debugger, assumes a debugger is present. |
| michael@0 | 57 | static void BreakDebugger(); |
| michael@0 | 58 | |
| michael@0 | 59 | #if defined(OS_MACOSX) |
| michael@0 | 60 | // On OS X, it can take a really long time for the OS Crash handler to |
| michael@0 | 61 | // process a Chrome crash. This translates into a long wait till the process |
| michael@0 | 62 | // actually dies. |
| michael@0 | 63 | // This method disables OS Crash reporting entireley. |
| michael@0 | 64 | // TODO(playmobil): Remove this when we have Breakpad integration enabled - |
| michael@0 | 65 | // see http://crbug.com/7652 |
| michael@0 | 66 | static void DisableOSCrashDumps(); |
| michael@0 | 67 | #endif // defined(OS_MACOSX) |
| michael@0 | 68 | }; |
| michael@0 | 69 | |
| michael@0 | 70 | namespace mozilla { |
| michael@0 | 71 | |
| michael@0 | 72 | class EnvironmentLog |
| michael@0 | 73 | { |
| michael@0 | 74 | public: |
| michael@0 | 75 | EnvironmentLog(const char* varname); |
| michael@0 | 76 | ~EnvironmentLog(); |
| michael@0 | 77 | |
| michael@0 | 78 | void print(const char* format, ...); |
| michael@0 | 79 | |
| michael@0 | 80 | private: |
| michael@0 | 81 | std::string fname_; |
| michael@0 | 82 | |
| michael@0 | 83 | DISALLOW_EVIL_CONSTRUCTORS(EnvironmentLog); |
| michael@0 | 84 | }; |
| michael@0 | 85 | |
| michael@0 | 86 | } // namespace mozilla |
| michael@0 | 87 | |
| michael@0 | 88 | #endif // BASE_DEBUG_UTIL_H_ |
