~drizzle-trunk/drizzle/development

/* Copyright (C) 2000 MySQL AB

   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; version 2 of the License.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  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 */

/* Defines to make different thread packages compatible */

#pragma once

#include <unistd.h>

#include <boost/date_time.hpp>

#ifndef ETIME

#define ETIME ETIMEDOUT				/* For FreeBSD */

#endif

#include <pthread.h>

#ifndef _REENTRANT

#define _REENTRANT

#endif

#ifdef HAVE_SCHED_H

#include <sched.h>

#endif

#ifdef HAVE_SYNCH_H

#include <synch.h>

#endif

#include <drizzled/visibility.h>

namespace drizzled {

namespace internal {

#if !defined(HAVE_PTHREAD_YIELD_ONE_ARG) && !defined(HAVE_PTHREAD_YIELD_ZERO_ARG)

/* no pthread_yield() available */

#ifdef HAVE_SCHED_YIELD

#define pthread_yield() sched_yield()

#elif defined(HAVE_PTHREAD_YIELD_NP) /* can be Mac OS X */

#define pthread_yield() pthread_yield_np()

#endif

#endif

/*

  The defines set_timespec and set_timespec_nsec should be used

  for calculating an absolute time at which

  pthread_cond_timedwait should timeout

*/

#ifndef set_timespec

#define set_timespec(ABSTIME,SEC) \

{\

  struct timeval tv;\

  gettimeofday(&tv,0);\

  (ABSTIME).tv_sec=tv.tv_sec+(time_t) (SEC);\

  (ABSTIME).tv_nsec=tv.tv_usec*1000;\

}

#endif /* !set_timespec */

#ifndef set_timespec_nsec

#define set_timespec_nsec(ABSTIME,NSEC) \

{\

  boost::posix_time::ptime mytime(boost::posix_time::microsec_clock::local_time());\

  boost::posix_time::ptime epoch(boost::gregorian::date(1970,1,1));\

  uint64_t t_mark= (mytime-epoch).total_microseconds();\

  uint64_t now= t_mark + (NSEC/100); \

  (ABSTIME).tv_sec=  (time_t) (now / 10000000UL);                  \

  (ABSTIME).tv_nsec= (long) (now % 10000000UL * 100 + ((NSEC) % 100)); \

}

#endif /* !set_timespec_nsec */

	/* Wrappers if safe mutex is actually used */

#define safe_mutex_assert_owner(mp)

#define safe_mutex_assert_not_owner(mp)

	/* READ-WRITE thread locking */

#if !defined(HAVE_PTHREAD_ATTR_SETSTACKSIZE) && ! defined(pthread_attr_setstacksize)

#define pthread_attr_setstacksize(A,B) pthread_dummy(0)

#endif

/* Define mutex types, see my_thr_init.c */

#ifdef THREAD_ADAPTIVE_MUTEX_INITIALIZER_NP

extern pthread_mutexattr_t my_fast_mutexattr;

#define MY_MUTEX_INIT_FAST &my_fast_mutexattr

#else

#define MY_MUTEX_INIT_FAST   NULL

#endif

#ifndef ESRCH

/* Define it to something */

#define ESRCH 1

#endif

DRIZZLED_API void my_thread_init();

} /* namespace internal */

} /* namespace drizzled */