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/* 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 */
/*
Functions to handle initializating and allocationg of all mysys & debug
thread variables.
*/
#include "config.h"
#include "drizzled/internal/my_sys.h"
#include "drizzled/internal/thread_var.h"
#include "drizzled/internal/m_string.h"
#include <cstdio>
#include <signal.h>
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#include <boost/thread/thread.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/thread/tss.hpp>
namespace drizzled
{
namespace internal
{
boost::thread_specific_ptr<st_my_thread_var> THR_KEY_mysys;
boost::mutex THR_LOCK_threads;
/*
initialize thread environment
SYNOPSIS
my_thread_global_init()
RETURN
0 ok
1 error (Couldn't create THR_KEY_mysys)
*/
bool my_thread_global_init(void)
{
if (my_thread_init())
{
my_thread_global_end(); /* Clean up */
return 1;
}
return 0;
}
void my_thread_global_end(void)
{
}
static uint64_t thread_id= 0;
/*
Allocate thread specific memory for the thread, used by mysys
SYNOPSIS
my_thread_init()
RETURN
0 ok
1 Fatal error; mysys/dbug functions can't be used
*/
bool my_thread_init(void)
{
// We should mever see my_thread_init() called twice
if (THR_KEY_mysys.get())
return 0;
st_my_thread_var *tmp= new st_my_thread_var;
if (tmp == NULL)
{
return true;
}
THR_KEY_mysys.reset(tmp);
boost::mutex::scoped_lock scopedLock(THR_LOCK_threads);
tmp->id= ++thread_id;
return false;
}
/*
Deallocate memory used by the thread for book-keeping
SYNOPSIS
my_thread_end()
NOTE
This may be called multiple times for a thread.
This happens for example when one calls 'mysql_server_init()'
mysql_server_end() and then ends with a mysql_end().
*/
void my_thread_end(void)
{
}
struct st_my_thread_var *_my_thread_var(void)
{
return THR_KEY_mysys.get();
}
} /* namespace internal */
} /* namespace drizzled */
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