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remode stack_oss

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This commit is contained in:
gabime
2014-05-08 02:23:07 +03:00
parent b72098101e
commit bafea6a6b2
13 changed files with 94 additions and 279 deletions
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1
include/c11log/common_types.h
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@@ -6,7 +6,6 @@ namespace c11log
{
typedef std::chrono::system_clock log_clock;
typedef std::pair<const char*, std::size_t> bufpair_t;
namespace level
{

6
include/c11log/details/flush_helper.h
View File

@@ -12,10 +12,10 @@ public:
explicit file_flush_helper(const std::size_t flush_every):
_flush_every(flush_every),
_write_counter(0) {};
void write(const bufpair_t& msg, std::ofstream& ofs)
void write(const std::string& msg, std::ofstream& ofs)
{
ofs.write(msg.first, msg.second);
ofs.write(msg.data(), msg.size());
if(++_write_counter == _flush_every)
{
ofs.flush();

12
include/c11log/details/line_logger.h
View File

@@ -1,8 +1,9 @@
#pragma once
#include <sstream>
#include "../common_types.h"
#include "../logger.h"
#include "stack_oss.h"
// line_logger class.
// aggregates single log line (on the stack if possibe) and calls the logger upon destruction
@@ -30,7 +31,7 @@ public:
_log_msg.msg_level,
_log_msg.msg_time,
_oss);
_log_msg.msg_header_size = _oss.size();
_log_msg.msg_header_size = _oss.str().size();
}
}
@@ -43,7 +44,7 @@ public:
line_logger(line_logger&& other) :
_callback_logger(other._callback_logger),
_log_msg(std::move(other._log_msg)),
_oss(std::move(other._oss)),
_oss(std::move(other._oss.str())),
_enabled(other._enabled),
_empty(other._empty)
{
@@ -58,7 +59,7 @@ public:
if (_enabled && !_empty)
{
_oss << os::eol();
_log_msg.msg_buf = _oss.buf();
_log_msg.str = _oss.str();
_callback_logger->_log_it(_log_msg);
}
}
@@ -90,7 +91,8 @@ public:
private:
logger* _callback_logger;
log_msg _log_msg;
details::stack_oss _oss;
//details::stack_oss _oss;
std::ostringstream _oss;
bool _enabled;
bool _empty;
};

51
include/c11log/details/log_msg.h
View File

@@ -7,12 +7,53 @@ namespace details
struct log_msg
{
log_msg() = default;
log_msg(level::level_enum l):msg_level(l) {};
bufpair_t msg_buf;
log_clock::time_point msg_time;
log_msg(level::level_enum l):
msg_level(l),
msg_time(),
msg_header_size(0),
str() {}
log_msg(const log_msg& other):
msg_level(other.msg_level),
msg_time(other.msg_time),
msg_header_size(other.msg_header_size),
str(other.str) {}
log_msg(log_msg&& other):log_msg()
{
swap(*this, other);
}
friend void swap(log_msg& l, log_msg& r)
{
using std::swap;
swap(l.msg_level, r.msg_level);
swap(l.msg_time, r.msg_time);
swap(l.msg_header_size, r.msg_header_size);
swap(l.str, r.str);
}
log_msg& operator=(log_msg other)
{
swap(*this, other);
return *this;
}
void clear()
{
msg_header_size = 0;
str.clear();
}
level::level_enum msg_level;
log_clock::time_point msg_time;
std::size_t msg_header_size;
level::level_enum msg_level;
std::string str;
};
}
}

110
include/c11log/details/stack_buf.h
View File

@@ -1,110 +0,0 @@
#pragma once
#include <array>
#include <vector>
#include <algorithm>
#include <cstring>
// Fast memory storage
// stores its contents on the stack when possible, in vector<char> otherwise
// NOTE: User should be remember that returned buffer might be on the stack!!
namespace c11log
{
namespace details
{
template<std::size_t STACK_SIZE=128>
class stack_buf
{
public:
stack_buf():_v(),_stack_buf(), _stack_size(0) {}
~stack_buf() {};
stack_buf& operator=(const stack_buf other) = delete;
stack_buf& operator=(stack_buf&& other) = delete;
stack_buf(const bufpair_t& buf_to_copy):stack_buf()
{
append(buf_to_copy);
}
stack_buf(const stack_buf& other)
{
_stack_size = other._stack_size;
if(!other._v.empty())
_v = other._v;
else if(_stack_size)
std::copy(other._stack_buf.begin(), other._stack_buf.begin()+_stack_size, _stack_buf.begin());
}
stack_buf(stack_buf&& other)
{
_stack_size = other._stack_size;
if(!other._v.empty())
_v = std::move(other._v);
else if(_stack_size)
std::copy(other._stack_buf.begin(), other._stack_buf.begin()+_stack_size, _stack_buf.begin());
other.clear();
}
void append(const char* buf, std::size_t buf_size)
{
//If we are aleady using _v, forget about the stack
if(!_v.empty())
{
_v.insert(_v.end(), buf, buf+ buf_size);
}
//Try use the stack
else
{
if(_stack_size+buf_size <= STACK_SIZE)
{
std::memcpy(&_stack_buf[_stack_size], buf, buf_size);
_stack_size+=buf_size;
}
//Not enough stack space. Copy all to _v
else
{
_v.reserve(_stack_size+buf_size);
if(_stack_size)
_v.insert(_v.end(), _stack_buf.begin(), _stack_buf.begin() +_stack_size);
_v.insert(_v.end(), buf, buf+buf_size);
}
}
}
void append(const bufpair_t &buf)
{
append(buf.first, buf.second);
}
void clear()
{
_stack_size = 0;
_v.clear();
}
bufpair_t get() const
{
if(!_v.empty())
return bufpair_t(_v.data(), _v.size());
else
return bufpair_t(_stack_buf.data(), _stack_size);
}
std::size_t size() const
{
if(!_v.empty())
return _v.size();
else
return _stack_size;
}
private:
std::vector<char> _v;
std::array<char, STACK_SIZE> _stack_buf;
std::size_t _stack_size;
};
}
} //namespace c11log { namespace details {

101
include/c11log/details/stack_oss.h
View File

@@ -1,101 +0,0 @@
#pragma once
// Faster than ostringstream--returns its string by ref
#include <ostream>
#include "c11log/details/stack_buf.h"
namespace c11log
{
namespace details
{
class stack_devicebuf:public std::streambuf
{
public:
using Base = std::streambuf;
stack_devicebuf() = default;
~stack_devicebuf() = default;
stack_devicebuf& operator=(const stack_devicebuf&) = delete;
stack_devicebuf(const stack_devicebuf& other):std::basic_streambuf<char>(),_stackbuf(other._stackbuf)
{}
stack_devicebuf(stack_devicebuf&& other):std::basic_streambuf<char>(),_stackbuf(std::move(other._stackbuf))
{
other.clear();
}
bufpair_t buf() const
{
return _stackbuf.get();
}
std::size_t size() const
{
return _stackbuf.size();
}
void clear()
{
_stackbuf.clear();
}
protected:
// copy the give buffer into the accumulated fast buffer
std::streamsize xsputn(const char_type* s, std::streamsize count) override
{
_stackbuf.append(s, static_cast<unsigned int>(count));
return count;
}
int_type overflow(int_type ch) override
{
if (traits_type::not_eof(ch))
{
char c = traits_type::to_char_type(ch);
xsputn(&c, 1);
}
return ch;
}
private:
stack_buf<192> _stackbuf;
};
class stack_oss:public std::ostream
{
public:
stack_oss():std::ostream(&_dev) {}
~stack_oss() = default;
stack_oss& operator=(const stack_oss& other) = delete;
stack_oss& operator=(const stack_oss&& other) = delete;
stack_oss(const stack_oss& other):std::basic_ios<char>(), std::ostream(&_dev), _dev(other._dev)
{}
stack_oss(stack_oss&& other):std::basic_ios<char>(), std::ostream(&_dev), _dev(std::move(other._dev))
{
other.clear();
}
bufpair_t buf() const
{
return _dev.buf();
}
std::size_t size() const
{
return _dev.size();
}
void clear()
{
_dev.clear();
}
private:
stack_devicebuf _dev;
};
}
}

19
include/c11log/formatter.h
View File

@@ -7,10 +7,10 @@
#include <iomanip>
#include <thread>
#include <cstring>
#include <sstream>
#include "common_types.h"
#include "details/os.h"
#include "details/stack_oss.h"
namespace c11log
{
@@ -57,8 +57,7 @@ inline void c11log::formatters::default_formatter::_format_time(const log_clock:
__declspec(thread) static size_t s_cache_size;
__declspec(thread) static std::time_t s_cache_time_t = 0;
#else
thread_local static char s_cache_str[64];
thread_local static size_t s_cache_size;
thread_local static std::string s_cache_timestr;
thread_local static std::time_t s_cache_time_t = 0;
#endif
@@ -67,7 +66,7 @@ inline void c11log::formatters::default_formatter::_format_time(const log_clock:
if(tp_time_t != s_cache_time_t)
{
auto tm_now = details::os::localtime(tp_time_t);
details::stack_oss time_oss;
std::ostringstream time_oss;
time_oss.fill('0');
time_oss << '[' << tm_now.tm_year + 1900 << '-';
time_oss.width(2);
@@ -82,10 +81,10 @@ inline void c11log::formatters::default_formatter::_format_time(const log_clock:
time_oss << tm_now.tm_sec << ']';
//Cache the resulted string and its size
s_cache_time_t = tp_time_t;
//const std::string &s = time_oss.str_ref();
bufpair_t buf = time_oss.buf();
std::memcpy(s_cache_str, buf.first, buf.second);
s_cache_size = buf.second;
//const std::string &s = time_oss.str_ref();
s_cache_timestr = time_oss.str();
}
output.write(s_cache_str, s_cache_size);
output << s_cache_timestr;
}

9
include/c11log/logger.h
View File

@@ -6,7 +6,7 @@
#include<memory>
#include<mutex>
#include<atomic>
#include <sstream>
#include "common_types.h"
#include "sinks/base_sink.h"
#include "details/factory.h"
@@ -27,10 +27,11 @@ class logger
{
public:
using sink_ptr = std::shared_ptr<sinks::base_sink>;
using formatter_ptr = std::shared_ptr<c11log::formatters::formatter>;
using sink_ptr = std::shared_ptr<sinks::base_sink>;
using sinks_vector_t = std::vector<sink_ptr>;
using sinks_init_list = std::initializer_list<sink_ptr>;
using sinks_init_list = std::initializer_list<sink_ptr>;
using formatter_ptr = std::shared_ptr<c11log::formatters::formatter>;
logger(const std::string& name, sinks_init_list, formatter_ptr = nullptr);
logger(const std::string& name, sink_ptr, formatter_ptr = nullptr);

45
include/c11log/sinks/async_sink.h
View File

@@ -3,7 +3,7 @@
#include <thread>
#include <chrono>
#include <atomic>
#include <functional>
#include <algorithm>
#include "base_sink.h"
#include "../logger.h"
@@ -18,27 +18,19 @@ namespace sinks
{
static void msg_deleter(details::log_msg* msg_to_delete)
{
delete []msg_to_delete->msg_buf.first;
delete msg_to_delete;
}
class async_sink : public base_sink
{
public:
using q_type = details::blocking_queue<details::log_msg>;
using queue_type = details::blocking_queue<std::unique_ptr<details::log_msg, std::function<void(details::log_msg*)>>>;
explicit async_sink(const queue_type::size_type max_queue_size);
explicit async_sink(const q_type::size_type max_queue_size);
//Stop logging and join the back thread
// TODO: limit with timeout of the join and kill it afterwards?
~async_sink();
void add_sink(logger::sink_ptr sink);
void remove_sink(logger::sink_ptr sink_ptr);
queue_type& q();
q_type& q();
//Wait to remaining items (if any) in the queue to be written and shutdown
void shutdown(const std::chrono::milliseconds& timeout);
@@ -50,7 +42,7 @@ protected:
private:
c11log::logger::sinks_vector_t _sinks;
std::atomic<bool> _active;
queue_type _q;
q_type _q;
std::thread _back_thread;
//Clear all remaining messages(if any), stop the _back_thread and join it
void _shutdown();
@@ -63,7 +55,7 @@ private:
// async_sink class implementation
///////////////////////////////////////////////////////////////////////////////
inline c11log::sinks::async_sink::async_sink(const queue_type::size_type max_queue_size)
inline c11log::sinks::async_sink::async_sink(const q_type::size_type max_queue_size)
:_sinks(),
_active(true),
_q(max_queue_size),
@@ -77,19 +69,10 @@ inline c11log::sinks::async_sink::~async_sink()
inline void c11log::sinks::async_sink::_sink_it(const details::log_msg& msg)
{
auto msg_size = msg.msg_buf.second;
if(!_active || !msg_size)
{
if(!_active || msg.str.empty())
return;
//re allocate on the heap the (stack based) message
details::log_msg* new_msg = new details::log_msg(msg);
char *buf = new char[msg_size];
std::memcpy(buf, msg.msg_buf.first, msg_size);
new_msg->msg_buf = bufpair_t(buf, msg_size);
// Create unique_ptr with custom deleter and push it
queue_type::item_type new_shared_msg(new_msg, msg_deleter);
_q.push(std::move(new_shared_msg));
_q.push(msg);
}
inline void c11log::sinks::async_sink::_thread_loop()
@@ -97,12 +80,12 @@ inline void c11log::sinks::async_sink::_thread_loop()
static std::chrono::seconds pop_timeout { 1 };
while (_active)
{
queue_type::item_type msg;
q_type::item_type msg;
if (_q.pop(msg, pop_timeout))
{
for (auto &sink : _sinks)
{
sink->log(*msg);
sink->log(msg);
if(!_active)
break;
}
@@ -115,12 +98,12 @@ inline void c11log::sinks::async_sink::add_sink(logger::sink_ptr sink)
_sinks.push_back(sink);
}
inline void c11log::sinks::async_sink::remove_sink(logger::sink_ptr sink_ptr)
inline void c11log::sinks::async_sink::remove_sink(logger::sink_ptr sink)
{
_sinks.erase(std::remove(_sinks.begin(), _sinks.end(), sink_ptr), _sinks.end());
_sinks.erase(std::remove(_sinks.begin(), _sinks.end(), sink), _sinks.end());
}
inline c11log::sinks::async_sink::queue_type& c11log::sinks::async_sink::q()
inline c11log::sinks::async_sink::q_type& c11log::sinks::async_sink::q()
{
return _q;
}

2
include/c11log/sinks/console_sinks.h
View File

@@ -23,7 +23,7 @@ protected:
virtual void _sink_it(const details::log_msg& msg) override
{
std::lock_guard<std::mutex> lock(_mutex);
_ostream.write(msg.msg_buf.first, msg.msg_buf.second);
_ostream << msg.str;
}
std::ostream& _ostream;

10
include/c11log/sinks/file_sinks.h
View File

@@ -31,7 +31,7 @@ protected:
void _sink_it(const details::log_msg& msg) override
{
std::lock_guard<std::mutex> lock(_mutex);
_flush_helper.write(msg.msg_buf, _ofstream);
_flush_helper.write(msg.str, _ofstream);
}
private:
std::mutex _mutex;
@@ -65,13 +65,13 @@ protected:
{
std::lock_guard<std::mutex> lock(_mutex);
_current_size += msg.msg_buf.second;
_current_size += msg.str.size();
if (_current_size > _max_size)
{
_rotate();
_current_size = msg.msg_buf.second;
_current_size = msg.str.size();
}
_flush_helper.write(msg.msg_buf, _ofstream);
_flush_helper.write(msg.str, _ofstream);
}
@@ -144,7 +144,7 @@ protected:
_ofstream.open(_calc_filename(_base_filename, _extension));
_midnight_tp = _calc_midnight_tp();
}
_flush_helper.write(msg.msg_buf, _ofstream);
_flush_helper.write(msg.str, _ofstream);
}
private: