0addd170ab
This patch pulls google/benchmark v1.4.1 into the LLVM tree so that any project could use it for benchmark generation. A dummy benchmark is added to `llvm/benchmarks/DummyYAML.cpp` to validate the correctness of the build process. The current version does not utilize LLVM LNT and LLVM CMake infrastructure, but that might be sufficient for most users. Two introduced CMake variables: * `LLVM_INCLUDE_BENCHMARKS` (`ON` by default) generates benchmark targets * `LLVM_BUILD_BENCHMARKS` (`OFF` by default) adds generated benchmark targets to the list of default LLVM targets (i.e. if `ON` benchmarks will be built upon standard build invocation, e.g. `ninja` or `make` with no specific targets) List of modifications: * `BENCHMARK_ENABLE_TESTING` is disabled * `BENCHMARK_ENABLE_EXCEPTIONS` is disabled * `BENCHMARK_ENABLE_INSTALL` is disabled * `BENCHMARK_ENABLE_GTEST_TESTS` is disabled * `BENCHMARK_DOWNLOAD_DEPENDENCIES` is disabled Original discussion can be found here: http://lists.llvm.org/pipermail/llvm-dev/2018-August/125023.html Reviewed by: dberris, lebedev.ri Subscribers: ilya-biryukov, ioeric, EricWF, lebedev.ri, srhines, dschuff, mgorny, krytarowski, fedor.sergeev, mgrang, jfb, llvm-commits Differential Revision: https://reviews.llvm.org/D50894 llvm-svn: 340809
74 lines
1.6 KiB
C++
74 lines
1.6 KiB
C++
#ifndef BENCHMARK_LOG_H_
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#define BENCHMARK_LOG_H_
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#include <iostream>
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#include <ostream>
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#include "benchmark/benchmark.h"
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namespace benchmark {
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namespace internal {
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typedef std::basic_ostream<char>&(EndLType)(std::basic_ostream<char>&);
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class LogType {
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friend LogType& GetNullLogInstance();
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friend LogType& GetErrorLogInstance();
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// FIXME: Add locking to output.
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template <class Tp>
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friend LogType& operator<<(LogType&, Tp const&);
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friend LogType& operator<<(LogType&, EndLType*);
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private:
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LogType(std::ostream* out) : out_(out) {}
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std::ostream* out_;
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BENCHMARK_DISALLOW_COPY_AND_ASSIGN(LogType);
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};
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template <class Tp>
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LogType& operator<<(LogType& log, Tp const& value) {
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if (log.out_) {
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*log.out_ << value;
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}
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return log;
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}
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inline LogType& operator<<(LogType& log, EndLType* m) {
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if (log.out_) {
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*log.out_ << m;
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}
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return log;
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}
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inline int& LogLevel() {
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static int log_level = 0;
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return log_level;
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}
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inline LogType& GetNullLogInstance() {
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static LogType log(nullptr);
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return log;
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}
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inline LogType& GetErrorLogInstance() {
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static LogType log(&std::clog);
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return log;
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}
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inline LogType& GetLogInstanceForLevel(int level) {
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if (level <= LogLevel()) {
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return GetErrorLogInstance();
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}
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return GetNullLogInstance();
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}
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} // end namespace internal
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} // end namespace benchmark
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#define VLOG(x) \
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(::benchmark::internal::GetLogInstanceForLevel(x) << "-- LOG(" << x << "):" \
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" ")
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#endif
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