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1 
2 /*--------------------------------------------------------------------*/
3 /*--- The thread state.                     pub_tool_threadstate.h ---*/
4 /*--------------------------------------------------------------------*/
5 
6 /*
7    This file is part of Valgrind, a dynamic binary instrumentation
8    framework.
9 
10    Copyright (C) 2000-2013 Julian Seward
11       jseward@acm.org
12 
13    This program is free software; you can redistribute it and/or
14    modify it under the terms of the GNU General Public License as
15    published by the Free Software Foundation; either version 2 of the
16    License, or (at your option) any later version.
17 
18    This program is distributed in the hope that it will be useful, but
19    WITHOUT ANY WARRANTY; without even the implied warranty of
20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
21    General Public License for more details.
22 
23    You should have received a copy of the GNU General Public License
24    along with this program; if not, write to the Free Software
25    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
26    02111-1307, USA.
27 
28    The GNU General Public License is contained in the file COPYING.
29 */
30 
31 #ifndef __PUB_TOOL_THREADSTATE_H
32 #define __PUB_TOOL_THREADSTATE_H
33 
34 #include "pub_tool_basics.h"   // ThreadID
35 
36 /* The maximum number of pthreads that we support.  This is
37    deliberately not very high since our implementation of some of the
38    scheduler algorithms is surely O(N) in the number of threads, since
39    that's simple, at least.  And (in practice) we hope that most
40    programs do not need many threads. */
41 #define VG_N_THREADS 500
42 
43 /* Special magic value for an invalid ThreadId.  It corresponds to
44    LinuxThreads using zero as the initial value for
45    pthread_mutex_t.__m_owner and pthread_cond_t.__c_waiting. */
46 #define VG_INVALID_THREADID ((ThreadId)(0))
47 
48 /* Get the TID of the thread which currently has the CPU. */
49 extern ThreadId VG_(get_running_tid) ( void );
50 
51 #endif   // __PUB_TOOL_THREADSTATE_H
52 
53 /*--------------------------------------------------------------------*/
54 /*--- end                                                          ---*/
55 /*--------------------------------------------------------------------*/
56