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/* tnt/job.h
* Copyright (C) 2003-2005 Tommi Maekitalo
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
* NON-INFRINGEMENT. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef TNT_JOB_H
#define TNT_JOB_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <deque>
#include <cxxtools/thread.h>
#include <cxxtools/tcpstream.h>
#include <tnt/httprequest.h>
#include <tnt/httpparser.h>
#include <tnt/pointer.h>
#include <time.h>
#include "tnt/ssl.h"
/**
// in tntnet (mainthread):
Jobqueue queue;
void mainloop()
{
while (1)
{
Jobqueue::JobPtr j = new Tcpjob();
j->accept(poller.get());
queue.put(j);
}
}
// in server (workerthread):
void Server::run()
{
while (1)
{
Jobqueue::JobPtr j = queue.get();
std::iostream& socket = j->getStream();
processRequest(socket);
}
}
*/
namespace tnt
{
/** Job - one per request */
class Job
{
unsigned keepAliveCounter;
HttpRequest request;
HttpMessage::Parser parser;
time_t lastAccessTime;
unsigned refs;
static unsigned socket_read_timeout;
static unsigned socket_write_timeout;
static unsigned keepalive_max;
static unsigned socket_buffer_size;
public:
Job()
: keepAliveCounter(keepalive_max),
parser(request),
lastAccessTime(0),
refs(0)
{ }
protected:
virtual ~Job();
public:
unsigned addRef() { return ++refs; }
unsigned release()
{
if (--refs == 0)
{
delete this;
return 0;
}
else
return refs;
}
virtual std::iostream& getStream() = 0;
virtual int getFd() const = 0;
virtual void setRead() = 0;
virtual void setWrite() = 0;
HttpRequest& getRequest() { return request; }
HttpMessage::Parser& getParser() { return parser; }
unsigned decrementKeepAliveCounter()
{ return keepAliveCounter > 0 ? --keepAliveCounter : 0; }
void clear();
void touch() { time(&lastAccessTime); }
int msecToTimeout(time_t currentTime) const;
static void setSocketReadTimeout(unsigned ms) { socket_read_timeout = ms; }
static void setSocketWriteTimeout(unsigned ms) { socket_write_timeout = ms; }
static void setKeepAliveMax(unsigned n) { keepalive_max = n; }
static void setSocketBufferSize(unsigned b) { socket_buffer_size = b; }
static unsigned getSocketReadTimeout() { return socket_read_timeout; }
static unsigned getSocketWriteTimeout() { return socket_write_timeout; }
static unsigned getKeepAliveTimeout();
static unsigned getKeepAliveMax() { return keepalive_max; }
static unsigned getSocketBufferSize() { return socket_buffer_size; }
};
class Tcpjob : public Job
{
cxxtools::net::iostream socket;
public:
Tcpjob()
: socket(getSocketBufferSize(), getSocketReadTimeout())
{ }
void accept(const cxxtools::net::Server& listener);
std::iostream& getStream();
int getFd() const;
void setRead();
void setWrite();
};
#ifdef USE_SSL
class SslTcpjob : public Job
{
ssl_iostream socket;
public:
SslTcpjob()
: socket(getSocketBufferSize(), getSocketReadTimeout())
{ }
void accept(const SslServer& listener);
std::iostream& getStream();
int getFd() const;
void setRead();
void setWrite();
};
#endif // USE_SSL
/** Jobqueue - one per process */
class Jobqueue
{
public:
typedef Pointer<Job> JobPtr;
cxxtools::Condition noWaitThreads;
private:
std::deque<JobPtr> jobs;
cxxtools::Mutex mutex;
cxxtools::Condition notEmpty;
cxxtools::Condition notFull;
unsigned waitThreads;
unsigned capacity;
public:
explicit Jobqueue(unsigned capacity_)
: waitThreads(0),
capacity(capacity_)
{ }
void put(JobPtr j);
JobPtr get();
void setCapacity(unsigned c)
{ capacity = c; }
unsigned getCapacity() const
{ return capacity; }
unsigned getWaitThreadCount() const
{ return waitThreads; }
bool empty() const
{ return jobs.empty(); }
};
}
#endif // TNT_JOB_H
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