37 lines
1006 B
C
37 lines
1006 B
C
/*
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* This file is part of Jehanne.
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*
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* Copyright (C) 2017 Giacomo Tesio <giacomo@tesio.it>
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*
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* Jehanne is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* Jehanne is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <u.h>
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#include <libc.h>
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int
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jehanne_tsemacquire(int* addr, long ms)
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{
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long wkup;
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wkup = sys_awake(ms);
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while(sys_semacquire(addr, 1) < 0){
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if(jehanne_awakened(wkup)){
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/* copy canlock semantic for return values */
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return 0;
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}
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/* interrupted; try again */
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}
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jehanne_forgivewkp(wkup);
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return 1;
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}
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