/thirdparty/breakpad/third_party/glog/src/utilities.h
http://github.com/tomahawk-player/tomahawk · C Header · 226 lines · 115 code · 39 blank · 72 comment · 19 complexity · 20c0a59961fa8f1bf39153f37dcf3a49 MD5 · raw file
- // Copyright (c) 2008, Google Inc.
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions are
- // met:
- //
- // * Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above
- // copyright notice, this list of conditions and the following disclaimer
- // in the documentation and/or other materials provided with the
- // distribution.
- // * Neither the name of Google Inc. nor the names of its
- // contributors may be used to endorse or promote products derived from
- // this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- //
- // Author: Shinichiro Hamaji
- //
- // Define utilties for glog internal usage.
- #ifndef UTILITIES_H__
- #define UTILITIES_H__
- #if defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
- # define OS_WINDOWS
- #elif defined(__CYGWIN__) || defined(__CYGWIN32__)
- # define OS_CYGWIN
- #elif defined(linux) || defined(__linux) || defined(__linux__)
- # define OS_LINUX
- #elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)
- # define OS_MACOSX
- #elif defined(__FreeBSD__)
- # define OS_FREEBSD
- #elif defined(__NetBSD__)
- # define OS_NETBSD
- #elif defined(__OpenBSD__)
- # define OS_OPENBSD
- #else
- // TODO(hamaji): Add other platforms.
- #endif
- // printf macros for size_t, in the style of inttypes.h
- #ifdef _LP64
- #define __PRIS_PREFIX "z"
- #else
- #define __PRIS_PREFIX
- #endif
- // Use these macros after a % in a printf format string
- // to get correct 32/64 bit behavior, like this:
- // size_t size = records.size();
- // printf("%"PRIuS"\n", size);
- #define PRIdS __PRIS_PREFIX "d"
- #define PRIxS __PRIS_PREFIX "x"
- #define PRIuS __PRIS_PREFIX "u"
- #define PRIXS __PRIS_PREFIX "X"
- #define PRIoS __PRIS_PREFIX "o"
- #include "base/mutex.h" // This must go first so we get _XOPEN_SOURCE
- #include <string>
- #if defined(OS_WINDOWS)
- # include "port.h"
- #endif
- #include "config.h"
- #include "glog/logging.h"
- // There are three different ways we can try to get the stack trace:
- //
- // 1) The libunwind library. This is still in development, and as a
- // separate library adds a new dependency, but doesn't need a frame
- // pointer. It also doesn't call malloc.
- //
- // 2) Our hand-coded stack-unwinder. This depends on a certain stack
- // layout, which is used by gcc (and those systems using a
- // gcc-compatible ABI) on x86 systems, at least since gcc 2.95.
- // It uses the frame pointer to do its work.
- //
- // 3) The gdb unwinder -- also the one used by the c++ exception code.
- // It's obviously well-tested, but has a fatal flaw: it can call
- // malloc() from the unwinder. This is a problem because we're
- // trying to use the unwinder to instrument malloc().
- //
- // Note: if you add a new implementation here, make sure it works
- // correctly when GetStackTrace() is called with max_depth == 0.
- // Some code may do that.
- #if defined(HAVE_LIB_UNWIND)
- # define STACKTRACE_H "stacktrace_libunwind-inl.h"
- #elif !defined(NO_FRAME_POINTER)
- # if defined(__i386__) && __GNUC__ >= 2
- # define STACKTRACE_H "stacktrace_x86-inl.h"
- # elif defined(__x86_64__) && __GNUC__ >= 2
- # define STACKTRACE_H "stacktrace_x86_64-inl.h"
- # elif (defined(__ppc__) || defined(__PPC__)) && __GNUC__ >= 2
- # define STACKTRACE_H "stacktrace_powerpc-inl.h"
- # endif
- #endif
- #if !defined(STACKTRACE_H) && defined(HAVE_EXECINFO_H)
- # define STACKTRACE_H "stacktrace_generic-inl.h"
- #endif
- #if defined(STACKTRACE_H)
- # define HAVE_STACKTRACE
- #endif
- // defined by gcc
- #if defined(__ELF__) && defined(OS_LINUX)
- # define HAVE_SYMBOLIZE
- #elif defined(OS_MACOSX) && defined(HAVE_DLADDR)
- // Use dladdr to symbolize.
- # define HAVE_SYMBOLIZE
- #endif
- #ifndef ARRAYSIZE
- // There is a better way, but this is good enough for our purpose.
- # define ARRAYSIZE(a) (sizeof(a) / sizeof(*(a)))
- #endif
- _START_GOOGLE_NAMESPACE_
- namespace glog_internal_namespace_ {
- #ifdef HAVE___ATTRIBUTE__
- # define ATTRIBUTE_NOINLINE __attribute__ ((noinline))
- # define HAVE_ATTRIBUTE_NOINLINE
- #else
- # define ATTRIBUTE_NOINLINE
- #endif
- const char* ProgramInvocationShortName();
- bool IsGoogleLoggingInitialized();
- bool is_default_thread();
- int64 CycleClock_Now();
- int64 UsecToCycles(int64 usec);
- typedef double WallTime;
- WallTime WallTime_Now();
- int32 GetMainThreadPid();
- bool PidHasChanged();
- pid_t GetTID();
- const std::string& MyUserName();
- // Get the part of filepath after the last path separator.
- // (Doesn't modify filepath, contrary to basename() in libgen.h.)
- const char* const_basename(const char* filepath);
- // Wrapper of __sync_val_compare_and_swap. If the GCC extension isn't
- // defined, we try the CPU specific logics (we only support x86 and
- // x86_64 for now) first, then use a naive implementation, which has a
- // race condition.
- template<typename T>
- inline T sync_val_compare_and_swap(T* ptr, T oldval, T newval) {
- #if defined(HAVE___SYNC_VAL_COMPARE_AND_SWAP)
- return __sync_val_compare_and_swap(ptr, oldval, newval);
- #elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
- T ret;
- __asm__ __volatile__("lock; cmpxchg %1, (%2);"
- :"=a"(ret)
- // GCC may produces %sil or %dil for
- // constraint "r", but some of apple's gas
- // dosn't know the 8 bit registers.
- // We use "q" to avoid these registers.
- :"q"(newval), "q"(ptr), "a"(oldval)
- :"memory", "cc");
- return ret;
- #else
- T ret = *ptr;
- if (ret == oldval) {
- *ptr = newval;
- }
- return ret;
- #endif
- }
- void DumpStackTraceToString(std::string* stacktrace);
- struct CrashReason {
- CrashReason() : filename(0), line_number(0), message(0), depth(0) {}
- const char* filename;
- int line_number;
- const char* message;
- // We'll also store a bit of stack trace context at the time of crash as
- // it may not be available later on.
- void* stack[32];
- int depth;
- };
- void SetCrashReason(const CrashReason* r);
- void InitGoogleLoggingUtilities(const char* argv0);
- void ShutdownGoogleLoggingUtilities();
- } // namespace glog_internal_namespace_
- _END_GOOGLE_NAMESPACE_
- using namespace GOOGLE_NAMESPACE::glog_internal_namespace_;
- #endif // UTILITIES_H__