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63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/*
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Looking Glass - KVM FrameRelay (KVMFR) Client
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Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
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https://looking-glass.hostfission.com
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include <time.h>
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#include <stdint.h>
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static inline uint64_t microtime()
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{
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struct timespec time;
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clock_gettime(CLOCK_MONOTONIC_RAW, &time);
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return ((uint64_t)time.tv_sec * 1000000) + (time.tv_nsec / 1000);
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}
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static inline uint64_t nanotime()
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{
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struct timespec time;
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clock_gettime(CLOCK_MONOTONIC_RAW, &time);
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return ((uint64_t)time.tv_sec * 1e9) + time.tv_nsec;
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}
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static inline void nsleep(uint64_t ns)
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{
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const struct timespec ts =
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{
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.tv_sec = ns / 1e9,
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.tv_nsec = ns - ((ns / 1e9) * 1e9)
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};
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nanosleep(&ts, NULL);
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}
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#ifdef ATOMIC_LOCKING
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#define LG_LOCK_MODE "Atomic"
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typedef volatile int LG_Lock;
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#define LG_LOCK_INIT(x) (x) = 0
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#define LG_LOCK(x) while(__sync_lock_test_and_set(&(x), 1)) {nsleep(100);}
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#define LG_UNLOCK(x) __sync_lock_release(&x)
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#define LG_LOCK_FREE(x)
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#else
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#define LG_LOCK_MODE "Mutex"
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typedef SDL_mutex * LG_Lock;
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#define LG_LOCK_INIT(x) (x = SDL_CreateMutex())
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#define LG_LOCK(x) SDL_LockMutex(x)
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#define LG_UNLOCK(x) SDL_UnlockMutex(x)
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#define LG_LOCK_FREE(x) SDL_DestroyMutex(x)
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#endif |