njn | 278b3d6 | 2005-05-30 23:20:51 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- Private scheduler header. priv_sema.h ---*/ |
| 4 | /*--------------------------------------------------------------------*/ |
| 5 | |
| 6 | /* |
| 7 | This file is part of Valgrind, a dynamic binary instrumentation |
| 8 | framework. |
| 9 | |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame^] | 10 | Copyright (C) 2000-2017 Julian Seward |
njn | 278b3d6 | 2005-05-30 23:20:51 +0000 | [diff] [blame] | 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 __PRIV_SEMA_H |
| 32 | #define __PRIV_SEMA_H |
| 33 | |
florian | 535fb1b | 2013-09-15 13:54:34 +0000 | [diff] [blame] | 34 | #include "pub_core_basics.h" // Bool |
| 35 | |
njn | 278b3d6 | 2005-05-30 23:20:51 +0000 | [diff] [blame] | 36 | /* Not really a semaphore, but use a pipe for a token-passing scheme */ |
njn | 278b3d6 | 2005-05-30 23:20:51 +0000 | [diff] [blame] | 37 | typedef struct { |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 38 | Int pipe[2]; |
| 39 | Int owner_lwpid; /* who currently has it */ |
| 40 | Bool held_as_LL; /* if held, True == held by a _LL call */ |
njn | 278b3d6 | 2005-05-30 23:20:51 +0000 | [diff] [blame] | 41 | } vg_sema_t; |
| 42 | |
| 43 | // Nb: this may be OS-specific, but let's not factor it out until we |
njn | 7b85dd5 | 2005-06-12 17:26:29 +0000 | [diff] [blame] | 44 | // implement an OS port for which this isn't ok. |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 45 | void ML_(sema_init) ( vg_sema_t *sema ); |
| 46 | void ML_(sema_deinit) ( vg_sema_t *sema ); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 47 | void ML_(sema_down) ( vg_sema_t *sema, Bool as_LL ); |
| 48 | void ML_(sema_up) ( vg_sema_t *sema, Bool as_LL ); |
njn | 278b3d6 | 2005-05-30 23:20:51 +0000 | [diff] [blame] | 49 | |
| 50 | #endif // __PRIV_SEMA_H |
| 51 | |
| 52 | /*--------------------------------------------------------------------*/ |
| 53 | /*--- end ---*/ |
| 54 | /*--------------------------------------------------------------------*/ |
| 55 | |