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file helper

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This commit is contained in:
gabi 2014-10-26 01:29:50 +02:00
parent 8fb32dcb65
commit b94ca27ce4
10 changed files with 167 additions and 104 deletions
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2
c11logtest/c11logtest/c11logtest.vcxproj
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@ -88,8 +88,8 @@
<ClInclude Include="..\..\include\c11log\common.h" />
<ClInclude Include="..\..\include\c11log\details\blocking_queue.h" />
<ClInclude Include="..\..\include\c11log\details\fast_oss.h" />
<ClInclude Include="..\..\include\c11log\details\flush_helper.h" />
<ClInclude Include="..\..\include\c11log\details\fast_istostr.h" />
<ClInclude Include="..\..\include\c11log\details\file_helper.h" />
<ClInclude Include="..\..\include\c11log\details\line_logger.h" />
<ClInclude Include="..\..\include\c11log\details\logger_impl.h" />
<ClInclude Include="..\..\include\c11log\details\log_msg.h" />

6
c11logtest/c11logtest/c11logtest.vcxproj.filters
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@ -45,9 +45,6 @@
<ClInclude Include="..\..\include\c11log\details\fast_oss.h">
<Filter>Header Files\c11log\details</Filter>
</ClInclude>
<ClInclude Include="..\..\include\c11log\details\flush_helper.h">
<Filter>Header Files\c11log\details</Filter>
</ClInclude>
<ClInclude Include="..\..\include\c11log\details\line_logger.h">
<Filter>Header Files\c11log\details</Filter>
</ClInclude>
@ -99,6 +96,9 @@
<ClInclude Include="..\..\include\c11log\details\registry.h">
<Filter>Header Files\c11log\details</Filter>
</ClInclude>
<ClInclude Include="..\..\include\c11log\details\file_helper.h">
<Filter>Header Files\c11log\details</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<ClCompile Include="stdafx.cpp">

14
example/bench.cpp
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@ -15,7 +15,8 @@ using namespace utils;
int main(int argc, char* argv[])
{
const unsigned int howmany = argc <= 1 ? 600000 : atoi(argv[1]);
try {
const unsigned int howmany = argc <= 1 ? 500000 : atoi(argv[1]);
//c11log::set_format("%t");
auto console = c11log::create<sinks::stdout_sink_st>("reporter");
@ -23,8 +24,10 @@ int main(int argc, char* argv[])
console->set_level(c11log::level::INFO);
console->info("Starting bench with", howmany, "iterations..");
//auto bench = c11log::create<sinks::rotating_file_sink_st>("bench", "myrotating", "txt", 1024 * 1024 * 5, 3, 100);
auto bench = c11log::create<sinks::null_sink_st>("bench");
//auto bench = c11log::create<sinks::rotating_file_sink_st>("bench", "myrotating", "txt", 1024 * 1024 * 5, 3, 0);
auto bench = c11log::create<sinks::daily_file_sink_mt>("bench", "sdfsfddaily", "txt", 0);
//auto bench = c11log::create<sinks::simple_file_sink_st>("bench", "simplelog.txt", 1);
//auto bench = c11log::create<sinks::null_sink_st>("bench");
auto start = system_clock::now();
for (unsigned int i = 1; i <= howmany; ++i)
{
@ -38,6 +41,11 @@ int main(int argc, char* argv[])
console->info("Delta:") << format(delta_d);
console->info("Rate:") << format(howmany / delta_d) << "/sec";
}
catch (std::exception &ex)
{
std::cerr << "Exception: " << ex.what() << std::endl;
}
return 0;
}

2
example/example.cpp
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@ -16,7 +16,7 @@ details::fast_oss f(const std::string& what)
oss << what;
return oss;
}
int main(int, char* [])
int main_(int, char* [])
{
auto foss = f("test2");

17
include/c11log/common.h
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@ -1,7 +1,6 @@
#pragma once
#include<initializer_list>
#include<memory>
#include<chrono>
namespace c11log
@ -37,4 +36,20 @@ inline const char* to_str(c11log::level::level_enum l)
return level_names[l];
}
} //level
//
// Log exception
//
class fflog_exception : public std::exception
{
public:
fflog_exception(const std::string& msg) :_msg(msg) {};
const char* what() const throw() override {
return _msg.c_str();
}
private:
std::string _msg;
};
} //c11log

90
include/c11log/details/file_helper.h Normal file
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@ -0,0 +1,90 @@
#pragma once
// Helper class for file sink
// When failing to open a file, retry several times(5) with small delay between the tries(10 ms)
// Flush to file every X writes (or never if X==0)
// Throw fflog_ exception on errors
#include <cstdio>
#include <string>
#include <thread>
#include <chrono>
#include "../common.h"
namespace c11log
{
namespace details
{
class file_helper
{
public:
static const int open_max_tries = 5;
static const int sleep_ms_bewteen_tries = 10;
explicit file_helper(const std::size_t flush_inverval):
_fd(nullptr),
_flush_inverval(flush_inverval),
_flush_countdown(flush_inverval) {};
file_helper(const file_helper&) = delete;
~file_helper()
{
if (_fd)
std::fclose(_fd);
}
void open(const std::string& filename)
{
if (_fd)
std::fclose(_fd);
_filename = filename;
for (int tries = 0; tries < open_max_tries; ++tries)
{
if(!os::fopen_s(&_fd, filename, "wb"))
return;
std::this_thread::sleep_for(std::chrono::milliseconds(sleep_ms_bewteen_tries));
}
throw fflog_exception("Failed opening file " + filename + " for writing");
}
void close()
{
std::fclose(_fd);
}
void write(const log_msg& msg)
{
auto& buf = msg.formatted.buf();
size_t size = buf.size();
if(std::fwrite(buf.data(), sizeof(char), size, _fd) != size)
throw fflog_exception("Failed writing to file " + _filename);
if(--_flush_countdown == 0)
{
std::fflush(_fd);
_flush_countdown = _flush_inverval;
}
}
private:
FILE* _fd;
std::string _filename;
const std::size_t _flush_inverval;
std::size_t _flush_countdown;
};
}
}

36
include/c11log/details/flush_helper.h
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@ -1,36 +0,0 @@
#pragma once
// Flush to file every X writes..
// If X is zero than never flush..
namespace c11log
{
namespace details
{
class file_flush_helper
{
public:
explicit file_flush_helper(const std::size_t flush_every):
_flush_every(flush_every),
_flush_countdown(flush_every) {};
file_flush_helper(const file_flush_helper&) = delete;
void write(const log_msg& msg, std::ofstream& ofs)
{
auto& buf = msg.formatted.buf();
ofs.write(buf.data(), buf.size());
if(--_flush_countdown == 0)
{
ofs.flush();
_flush_countdown = _flush_every;
}
}
private:
const std::size_t _flush_every;
std::size_t _flush_countdown;
};
}
}

6
include/c11log/details/os.h
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@ -96,11 +96,13 @@ constexpr inline unsigned short eol_size()
inline bool fopen_s(FILE** fp, const std::string& filename, const char* mode)
{
#ifdef _WIN32
return fopen_s(fp, filename, mode);
return ::fopen_s(fp, filename.c_str(), mode);
#else
*fp = fopen((filename.c_str()), mode);
return fp == nullptr;
return *fp == nullptr;
#endif
}
//Return utc offset in minutes or -1 on failure

11
include/c11log/logger.h
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@ -66,17 +66,6 @@ private:
void _log_msg(details::log_msg& msg);
};
class fflog_exception : public std::exception
{
public:
fflog_exception(const std::string& msg) :_msg(msg) {};
const char* what() const throw() override {
return _msg.c_str();
}
private:
std::string _msg;
};
//
// Registry functions for easy loggers creation and retrieval

53
include/c11log/sinks/file_sinks.h
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@ -1,13 +1,11 @@
#pragma once
#include <fstream>
#include <sstream>
#include <iomanip>
#include "./base_sink.h"
#include <mutex>
#include "./base_sink.h"
#include "../details/null_mutex.h"
#include "../details/flush_helper.h"
#include "../details/blocking_queue.h"
#include "../details/file_helper.h"
@ -24,19 +22,18 @@ class simple_file_sink : public base_sink<Mutex>
{
public:
explicit simple_file_sink(const std::string &filename,
const std::size_t flush_every=0):
_ofstream(filename, std::ofstream::binary|std::ofstream::app),
_flush_helper(flush_every)
const std::size_t flush_inverval=0):
_file_helper(flush_inverval)
{
_file_helper.open(filename);
}
protected:
void _sink_it(const details::log_msg& msg) override
{
_flush_helper.write(msg, _ofstream);
_file_helper.write(msg);
}
private:
std::ofstream _ofstream;
details::file_flush_helper _flush_helper;
details::file_helper _file_helper;
};
typedef simple_file_sink<std::mutex> simple_file_sink_mt;
@ -51,15 +48,15 @@ class rotating_file_sink : public base_sink<Mutex>
public:
rotating_file_sink(const std::string &base_filename, const std::string &extension,
const std::size_t max_size, const std::size_t max_files,
const std::size_t flush_every=0):
const std::size_t flush_inverval=0):
_base_filename(base_filename),
_extension(extension),
_max_size(max_size),
_max_files(max_files),
_current_size(0),
_ofstream(_calc_filename(_base_filename, 0, _extension), std::ofstream::binary),
_flush_helper(flush_every)
_file_helper(flush_inverval)
{
_file_helper.open(_calc_filename(_base_filename, 0, _extension));
}
protected:
@ -71,7 +68,7 @@ protected:
_rotate();
_current_size = msg.formatted.size();
}
_flush_helper.write(msg, _ofstream);
_file_helper.write(msg);
}
@ -95,25 +92,24 @@ private:
void _rotate()
{
_ofstream.close();
_file_helper.close();
//Remove oldest file
for (auto i = _max_files; i > 0; --i)
{
auto src = _calc_filename(_base_filename, i - 1, _extension);
auto target = _calc_filename(_base_filename, i, _extension);
std::string src = _calc_filename(_base_filename, i - 1, _extension);
std::string target = _calc_filename(_base_filename, i, _extension);
if (i == _max_files)
std::remove(target.c_str());
std::rename(src.c_str(), target.c_str());
}
_ofstream.open(_calc_filename(_base_filename, 0, _extension), std::ofstream::binary);
_file_helper.open(_calc_filename(_base_filename, 0, _extension));
}
std::string _base_filename;
std::string _extension;
std::size_t _max_size;
std::size_t _max_files;
std::size_t _current_size;
std::ofstream _ofstream;
details::file_flush_helper _flush_helper;
details::file_helper _file_helper;
};
typedef rotating_file_sink<std::mutex> rotating_file_sink_mt;
@ -128,13 +124,13 @@ class daily_file_sink:public base_sink<Mutex>
public:
explicit daily_file_sink(const std::string& base_filename,
const std::string& extension,
const std::size_t flush_every=0):
const std::size_t flush_inverval=0):
_base_filename(base_filename),
_extension(extension),
_midnight_tp (_calc_midnight_tp() ),
_ofstream(_calc_filename(_base_filename, _extension), std::ofstream::binary|std::ofstream::app),
_flush_helper(flush_every)
_file_helper(flush_inverval)
{
_file_helper.open(_calc_filename(_base_filename, _extension));
}
protected:
@ -142,11 +138,11 @@ protected:
{
if (std::chrono::system_clock::now() >= _midnight_tp)
{
_ofstream.close();
_ofstream.open(_calc_filename(_base_filename, _extension));
_file_helper.close();
_file_helper.open(_calc_filename(_base_filename, _extension));
_midnight_tp = _calc_midnight_tp();
}
_flush_helper.write(msg, _ofstream);
_file_helper.write(msg);
}
private:
@ -176,8 +172,7 @@ private:
std::string _base_filename;
std::string _extension;
std::chrono::system_clock::time_point _midnight_tp;
std::ofstream _ofstream;
details::file_flush_helper _flush_helper;
details::file_helper _file_helper;
};