136 lines
4.1 KiB
C++
136 lines
4.1 KiB
C++
/*
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* Copyright 2006 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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// Most of this was borrowed (with minor modifications) from V8's and Chromium's
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// src/base/logging.cc.
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// Use the C++ version to provide __GLIBCXX__.
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#include <cstdarg>
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#include <cstdio>
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#include <cstdlib>
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#if defined(__GLIBCXX__) && !defined(__UCLIBC__)
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#include <cxxabi.h>
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#include <execinfo.h>
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#endif
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#if defined(WEBRTC_ANDROID)
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#define RTC_LOG_TAG "rtc"
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#include <android/log.h> // NOLINT
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#endif
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#if defined(WEBRTC_WIN)
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#include <windows.h>
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#endif
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#include "webrtc/base/checks.h"
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#include "webrtc/base/logging.h"
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#if defined(_MSC_VER)
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// Warning C4722: destructor never returns, potential memory leak.
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// FatalMessage's dtor very intentionally aborts.
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#pragma warning(disable:4722)
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#endif
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namespace rtc {
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void VPrintError(const char* format, va_list args) {
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#if defined(WEBRTC_ANDROID)
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__android_log_vprint(ANDROID_LOG_ERROR, RTC_LOG_TAG, format, args);
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#else
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vfprintf(stderr, format, args);
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#endif
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}
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void PrintError(const char* format, ...) {
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va_list args;
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va_start(args, format);
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VPrintError(format, args);
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va_end(args);
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}
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// TODO(ajm): This works on Mac (although the parsing fails) but I don't seem
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// to get usable symbols on Linux. This is copied from V8. Chromium has a more
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// advanced stace trace system; also more difficult to copy.
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void DumpBacktrace() {
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#if defined(__GLIBCXX__) && !defined(__UCLIBC__)
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void* trace[100];
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int size = backtrace(trace, sizeof(trace) / sizeof(*trace));
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char** symbols = backtrace_symbols(trace, size);
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PrintError("\n==== C stack trace ===============================\n\n");
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if (size == 0) {
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PrintError("(empty)\n");
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} else if (symbols == NULL) {
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PrintError("(no symbols)\n");
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} else {
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for (int i = 1; i < size; ++i) {
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char mangled[201];
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if (sscanf(symbols[i], "%*[^(]%*[(]%200[^)+]", mangled) == 1) { // NOLINT
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PrintError("%2d: ", i);
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int status;
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size_t length;
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char* demangled = abi::__cxa_demangle(mangled, NULL, &length, &status);
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PrintError("%s\n", demangled != NULL ? demangled : mangled);
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free(demangled);
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} else {
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// If parsing failed, at least print the unparsed symbol.
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PrintError("%s\n", symbols[i]);
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}
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}
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}
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free(symbols);
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#endif
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}
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FatalMessage::FatalMessage(const char* file, int line) {
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Init(file, line);
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}
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FatalMessage::FatalMessage(const char* file, int line, std::string* result) {
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Init(file, line);
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stream_ << "Check failed: " << *result << std::endl << "# ";
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delete result;
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}
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NO_RETURN FatalMessage::~FatalMessage() {
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fflush(stdout);
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fflush(stderr);
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stream_ << std::endl << "#" << std::endl;
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PrintError(stream_.str().c_str());
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DumpBacktrace();
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fflush(stderr);
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abort();
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}
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void FatalMessage::Init(const char* file, int line) {
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stream_ << std::endl << std::endl
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<< "#" << std::endl
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<< "# Fatal error in " << file << ", line " << line << std::endl
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<< "# last system error: " << LAST_SYSTEM_ERROR << std::endl
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<< "# ";
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}
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// MSVC doesn't like complex extern templates and DLLs.
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#if !defined(COMPILER_MSVC)
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// Explicit instantiations for commonly used comparisons.
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template std::string* MakeCheckOpString<int, int>(
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const int&, const int&, const char* names);
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template std::string* MakeCheckOpString<unsigned long, unsigned long>(
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const unsigned long&, const unsigned long&, const char* names);
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template std::string* MakeCheckOpString<unsigned long, unsigned int>(
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const unsigned long&, const unsigned int&, const char* names);
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template std::string* MakeCheckOpString<unsigned int, unsigned long>(
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const unsigned int&, const unsigned long&, const char* names);
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template std::string* MakeCheckOpString<std::string, std::string>(
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const std::string&, const std::string&, const char* name);
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#endif
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} // namespace rtc
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