/*--------------------------------------------------------------------*/
/*--- The thread state.                     pub_tool_threadstate.h ---*/
/*--------------------------------------------------------------------*/

/*
   This file is part of Valgrind, a dynamic binary instrumentation
   framework.

   Copyright (C) 2000-2013 Julian Seward
      jseward@acm.org

   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
   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., 59 Temple Place, Suite 330, Boston, MA
   02111-1307, USA.

   The GNU General Public License is contained in the file COPYING.
*/

#ifndef __PUB_TOOL_THREADSTATE_H
#define __PUB_TOOL_THREADSTATE_H

#include "pub_tool_basics.h"   // ThreadID

/* The maximum number of pthreads that we support.  This is
   deliberately not very high since our implementation of some of the
   scheduler algorithms is surely O(N) in the number of threads, since
   that's simple, at least.  And (in practice) we hope that most
   programs do not need many threads. */
#define VG_N_THREADS 500

/* Special magic value for an invalid ThreadId.  It corresponds to
   LinuxThreads using zero as the initial value for
   pthread_mutex_t.__m_owner and pthread_cond_t.__c_waiting. */
#define VG_INVALID_THREADID ((ThreadId)(0))

/* Get the TID of the thread which currently has the CPU. */
extern ThreadId VG_(get_running_tid) ( void );

#endif   // __PUB_TOOL_THREADSTATE_H

/*--------------------------------------------------------------------*/
/*--- end                                                          ---*/
/*--------------------------------------------------------------------*/