src/server/util/atomic.h

Sat, 13 Jan 2018 18:48:19 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sat, 13 Jan 2018 18:48:19 +0100
branch
aio
changeset 192
6a145e13d933
parent 109
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child 161
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permissions
-rw-r--r--

replaces eventfd with pipe and closes aio branch

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2013 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #ifndef ATOMIC_H
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30 #define ATOMIC_H
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31
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32 #ifdef __cplusplus
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33 extern "C" {
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34 #endif
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36 #ifdef __gnu_linux__
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38 #define ws_atomic_inc32(intptr) __sync_fetch_and_add(intptr, 1)
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39 #define ws_atomic_dec32(intptr) __sync_fetch_and_sub(intptr, 1)
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40 #define ws_atomic_add32(intptr, val) __sync_fetch_and_add(intptr, val)
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41 #define ws_atomic_sub32(intptr, val) __sync_fetch_and_sub(intptr, val)
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42
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43 #elif defined(OSX)
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44 #include <libkern/OSAtomic.h>
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46 #define ws_atomic_inc32(intptr) OSAtomicIncrement32((volatile int32_t *)intptr)
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47 #define ws_atomic_dec32(intptr) OSAtomicDecrement32((volatile int32_t *)intptr)
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48
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49 #elif defined(BSD)
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50 #define ws_atomic_inc32(intptr) __sync_fetch_and_add(intptr, 1)
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51 #define ws_atomic_dec32(intptr) __sync_fetch_and_sub(intptr, 1)
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52 #define ws_atomic_add32(intptr, val) __sync_fetch_and_add(intptr, val)
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53 #define ws_atomic_sub32(intptr, val) __sync_fetch_and_sub(intptr, va
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54 #else
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55 // use atomic.h
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56 #include <atomic.h>
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57
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58 #define ws_atomic_inc32(intptr) atomic_inc_32_nv(intptr)
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59 #define ws_atomic_dec32(intptr) atomic_dec_32_nv(intptr)
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60 // TODO
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62 #endif
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65 #ifdef __cplusplus
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66 }
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67 #endif
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69 #endif /* ATOMIC_H */
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