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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file LICENSE.rst or https://cmake.org/licensing for details. */
#include "cmMakefileProfilingData.h"
#include <chrono>
#include <stdexcept>
#include <utility>
#include <cm3p/json/value.h>
#include <cm3p/json/writer.h>
#include "cmsys/FStream.hxx"
#include "cmsys/SystemInformation.hxx"
#include "cmStringAlgorithms.h"
#include "cmSystemTools.h"
cmMakefileProfilingData::cmMakefileProfilingData(
std::string const& profileStream)
{
std::ios::openmode omode = std::ios::out | std::ios::trunc;
this->ProfileStream.open(profileStream.c_str(), omode);
Json::StreamWriterBuilder wbuilder;
this->JsonWriter =
std::unique_ptr<Json::StreamWriter>(wbuilder.newStreamWriter());
if (!this->ProfileStream.good()) {
throw std::runtime_error(std::string("Unable to open: ") + profileStream);
}
this->ProfileStream << "[";
}
cmMakefileProfilingData::~cmMakefileProfilingData() noexcept
{
if (this->ProfileStream.good()) {
try {
this->ProfileStream << "]";
this->ProfileStream.close();
} catch (...) {
cmSystemTools::Error("Error writing profiling output!");
}
}
}
void cmMakefileProfilingData::StartEntry(std::string const& category,
std::string const& name,
cm::optional<Json::Value> args)
{
/* Do not try again if we previously failed to write to output. */
if (!this->ProfileStream.good()) {
return;
}
try {
if (this->ProfileStream.tellp() > 1) {
this->ProfileStream << ",";
}
cmsys::SystemInformation info;
Json::Value v;
v["ph"] = "B";
v["name"] = name;
v["cat"] = category;
v["ts"] = static_cast<Json::Value::UInt64>(
std::chrono::duration_cast<std::chrono::microseconds>(
std::chrono::steady_clock::now().time_since_epoch())
.count());
v["pid"] = static_cast<int>(info.GetProcessId());
v["tid"] = 0;
if (args) {
v["args"] = *std::move(args);
}
this->JsonWriter->write(v, &this->ProfileStream);
} catch (std::ios_base::failure& fail) {
cmSystemTools::Error(
cmStrCat("Failed to write to profiling output: ", fail.what()));
} catch (...) {
cmSystemTools::Error("Error writing profiling output!");
}
}
void cmMakefileProfilingData::StopEntry()
{
/* Do not try again if we previously failed to write to output. */
if (!this->ProfileStream.good()) {
return;
}
try {
this->ProfileStream << ",";
cmsys::SystemInformation info;
Json::Value v;
v["ph"] = "E";
v["ts"] = static_cast<Json::Value::UInt64>(
std::chrono::duration_cast<std::chrono::microseconds>(
std::chrono::steady_clock::now().time_since_epoch())
.count());
v["pid"] = static_cast<int>(info.GetProcessId());
v["tid"] = 0;
this->JsonWriter->write(v, &this->ProfileStream);
} catch (std::ios_base::failure& fail) {
cmSystemTools::Error(
cmStrCat("Failed to write to profiling output:", fail.what()));
} catch (...) {
cmSystemTools::Error("Error writing profiling output!");
}
}
cmMakefileProfilingData::RAII::RAII(cmMakefileProfilingData& data,
std::string const& category,
std::string const& name,
cm::optional<Json::Value> args)
: Data(&data)
{
this->Data->StartEntry(category, name, std::move(args));
}
cmMakefileProfilingData::RAII::RAII(RAII&& other) noexcept
: Data(other.Data)
{
other.Data = nullptr;
}
cmMakefileProfilingData::RAII::~RAII()
{
if (this->Data) {
this->Data->StopEntry();
}
}
cmMakefileProfilingData::RAII& cmMakefileProfilingData::RAII::operator=(
RAII&& other) noexcept
{
if (this->Data) {
this->Data->StopEntry();
}
this->Data = other.Data;
other.Data = nullptr;
return *this;
}
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