projects / OpenSPARC-T2-SAM / blame
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|---|---|---|
| 920dae64 AT |
1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== | |
| 3 | * | |
| 4 | * OpenSPARC T2 Processor File: barrier.h | |
| 5 | * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
| 6 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES. | |
| 7 | * | |
| 8 | * The above named program is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU General Public | |
| 10 | * License version 2 as published by the Free Software Foundation. | |
| 11 | * | |
| 12 | * The above named program is distributed in the hope that it will be | |
| 13 | * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public | |
| 18 | * License along with this work; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. | |
| 20 | * | |
| 21 | * ========== Copyright Header End ============================================ | |
| 22 | */ | |
| 23 | /* | |
| 24 | * Copyright 2006 Sun Microsystems, Inc. All rights reserved. | |
| 25 | * Use is subject to license terms. | |
| 26 | */ | |
| 27 | ||
| 28 | #ifndef _BARRIER_H | |
| 29 | #define _BARRIER_H | |
| 30 | ||
| 31 | #pragma ident "@(#)barrier.h 1.2 06/08/08 SMI" | |
| 32 | ||
| 33 | #ifdef __cplusplus | |
| 34 | extern "C" { | |
| 35 | #endif | |
| 36 | ||
| 37 | #include <thread.h> | |
| 38 | #include "basics.h" | |
| 39 | ||
| 40 | typedef struct { | |
| 41 | int maxcnt; /* maximum number of runners */ | |
| 42 | struct _sb { | |
| 43 | cond_t wait_cv; /* cv for waiters at barrier */ | |
| 44 | mutex_t wait_lk; /* mutex for waiters at barrier */ | |
| 45 | int runners; /* number of running threads */ | |
| 46 | } sb[2]; | |
| 47 | struct _sb *sbp; /* current sub-barrier */ | |
| 48 | } barrier_t; | |
| 49 | ||
| 50 | extern int barrier_init(barrier_t *bp, int count); | |
| 51 | extern void barrier_wait(barrier_t *bp); | |
| 52 | ||
| 53 | typedef struct { | |
| 54 | int maxcnt; /* maximum number of runners */ | |
| 55 | struct _sbb { | |
| 56 | volatile int spin_cv; /* "cv" for waiters at barrier */ | |
| 57 | volatile int runners; /* number of running threads */ | |
| 58 | } sbb[2]; | |
| 59 | struct _sbb *sbbp; /* current sub-busy-barrier */ | |
| 60 | } barrier_busy_t; | |
| 61 | ||
| 62 | extern int barrier_busy_init(barrier_busy_t *bbp, int count); | |
| 63 | extern void barrier_busy_wait(barrier_busy_t *bbp); | |
| 64 | ||
| 65 | #ifdef __cplusplus | |
| 66 | } | |
| 67 | #endif | |
| 68 | ||
| 69 | #endif /* _BARRIER_H */ |