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376ebc2635
* Support optional, user-directed collection of performance counters The patch allows an engineer wishing to drill into the root causes of a regression, for example. Currently, only single threaded runs are supported. The feature is a build-time opt in, and then a runtime opt in. The engineer may run the benchmark executable, passing a list of performance counter names (using libpfm's naming scheme) at the command line. The counter values will then be collected and reported back as UserCounters. This is different from #240 in that it is a benchmark user opt-in, and the counter collection is transparent to the benchmark. Currently, this is only supported on platforms where libpfm is supported. libpfm: http://perfmon2.sourceforge.net/ * 'Use' values param in Snapshot when BENCHMARK_OS_WINDOWS This is to avoid unused parameter warning-as-error * Added missing include for <vector> in perf_counters.cc * Moved doc to docs * Added license blurbs
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
#ifndef BENCHMARK_STRING_UTIL_H_
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#define BENCHMARK_STRING_UTIL_H_
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#include <sstream>
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#include <string>
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#include <utility>
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#include "internal_macros.h"
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namespace benchmark {
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void AppendHumanReadable(int n, std::string* str);
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std::string HumanReadableNumber(double n, double one_k = 1024.0);
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#if defined(__MINGW32__)
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__attribute__((format(__MINGW_PRINTF_FORMAT, 1, 2)))
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#elif defined(__GNUC__)
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__attribute__((format(printf, 1, 2)))
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#endif
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std::string
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StrFormat(const char* format, ...);
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inline std::ostream& StrCatImp(std::ostream& out) BENCHMARK_NOEXCEPT {
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return out;
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}
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template <class First, class... Rest>
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inline std::ostream& StrCatImp(std::ostream& out, First&& f, Rest&&... rest) {
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out << std::forward<First>(f);
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return StrCatImp(out, std::forward<Rest>(rest)...);
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}
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template <class... Args>
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inline std::string StrCat(Args&&... args) {
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std::ostringstream ss;
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StrCatImp(ss, std::forward<Args>(args)...);
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return ss.str();
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}
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std::vector<std::string> StrSplit(const std::string& str, char delim);
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#ifdef BENCHMARK_STL_ANDROID_GNUSTL
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/*
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* GNU STL in Android NDK lacks support for some C++11 functions, including
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* stoul, stoi, stod. We reimplement them here using C functions strtoul,
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* strtol, strtod. Note that reimplemented functions are in benchmark::
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* namespace, not std:: namespace.
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*/
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unsigned long stoul(const std::string& str, size_t* pos = nullptr,
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int base = 10);
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int stoi(const std::string& str, size_t* pos = nullptr, int base = 10);
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double stod(const std::string& str, size_t* pos = nullptr);
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#else
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using std::stoul;
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using std::stoi;
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using std::stod;
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#endif
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} // end namespace benchmark
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#endif // BENCHMARK_STRING_UTIL_H_
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