174 lines
4.4 KiB
C++
174 lines
4.4 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <utils/Panic.h>
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#include <atomic>
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#include <cstdarg>
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#include <cstdlib>
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#include <cstring>
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#include <utils/Log.h>
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namespace utils {
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static std::string formatString(const char* format, va_list args) noexcept {
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std::string reason;
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va_list tmp;
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va_copy(tmp, args);
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int n = vsnprintf(nullptr, 0, format, tmp);
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va_end(tmp);
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if (n >= 0) {
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++n; // for the nul-terminating char
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char* buf = new char[n];
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vsnprintf(buf, size_t(n), format, args);
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reason.assign(buf);
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delete [] buf;
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}
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return reason;
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}
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static std::string formatString(const char* format, ...) noexcept {
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va_list args;
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va_start(args, format);
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std::string s(formatString(format, args));
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va_end(args);
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return s;
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}
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static std::string panicString(
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const std::string& msg, const char* function, int line,
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const char* file, const char* reason) {
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#ifndef NDEBUG
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return formatString("%s\nin %s:%d\nin file %s\nreason: %s",
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msg.c_str(), function, line, file, reason);
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#else
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return formatString("%s\nin %s:%d\nreason: %s",
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msg.c_str(), function, line, reason);
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#endif
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}
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Panic::~Panic() noexcept = default;
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template<typename T>
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TPanic<T>::TPanic(std::string reason) :
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m_reason(std::move(reason)) {
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m_callstack.update(1);
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buildMessage();
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}
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template<typename T>
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TPanic<T>::TPanic(const char* function, const char* file, int line, std::string reason)
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: m_reason(std::move(reason)), m_function(function), m_file(file), m_line(line) {
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m_callstack.update(1);
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buildMessage();
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}
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template<typename T>
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TPanic<T>::~TPanic() {
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}
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template<typename T>
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const char* TPanic<T>::what() const noexcept {
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return m_msg.c_str();
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}
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template<typename T>
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const char* TPanic<T>::getFunction() const noexcept {
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return m_function;
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}
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template<typename T>
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const char* TPanic<T>::getFile() const noexcept {
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return m_file;
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}
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template<typename T>
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int TPanic<T>::getLine() const noexcept {
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return m_line;
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}
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template<typename T>
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const CallStack& TPanic<T>::getCallStack() const noexcept {
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return m_callstack;
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}
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template<typename T>
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void TPanic<T>::log() const noexcept {
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slog.e << what() << io::endl;
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slog.e << m_callstack << io::endl;
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}
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template<typename T>
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void TPanic<T>::buildMessage() {
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std::string type;
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#if UTILS_HAS_RTTI
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type = CallStack::demangleTypeName(typeid(T).name()).c_str();
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#else
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type = "Panic";
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#endif
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m_msg = panicString(type, m_function, m_line, m_file, m_reason.c_str());
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}
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UTILS_ALWAYS_INLINE
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inline static const char* formatFile(char const* file) noexcept {
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const char * p = std::strstr(file, "filament/");
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return p ? p : file;
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}
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template<typename T>
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void TPanic<T>::panic(char const* function, char const* file, int line, const char* format, ...) {
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va_list args;
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va_start(args, format);
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std::string reason(formatString(format, args));
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va_end(args);
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T e(function, formatFile(file), line, reason);
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e.log();
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#ifdef __EXCEPTIONS
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throw e;
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#endif
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std::abort();
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}
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// -----------------------------------------------------------------------------------------------
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namespace details {
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void panicLog(char const* function, char const* file, int line, const char* format, ...) noexcept {
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va_list args;
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va_start(args, format);
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std::string reason(formatString(format, args));
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va_end(args);
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const std::string msg = panicString("" /* no extra message */,
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function, line, file, reason.c_str());
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slog.e << msg << io::endl;
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slog.e << CallStack::unwind(1) << io::endl;
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}
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} // namespace details
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// -----------------------------------------------------------------------------------------------
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template class UTILS_PUBLIC TPanic<PreconditionPanic>;
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template class UTILS_PUBLIC TPanic<PostconditionPanic>;
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template class UTILS_PUBLIC TPanic<ArithmeticPanic>;
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} // namespace utils
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