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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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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;
};
}
}