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

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

   Copyright (C) 2000-2017 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, see <http://www.gnu.org/licenses/>.

   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. */
extern UInt VG_N_THREADS;

/* 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

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/*--- end                                                          ---*/
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