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comparison: gfx/harfbuzz/src/hb-atomic-private.hh
gfx/harfbuzz/src/hb-atomic-private.hh
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- TOR_BUG_9701
- changeset 15
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| -1:000000000000 | 0:0d53c0204892 |
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| 1 /* | |
| 2 * Copyright © 2007 Chris Wilson | |
| 3 * Copyright © 2009,2010 Red Hat, Inc. | |
| 4 * Copyright © 2011,2012 Google, Inc. | |
| 5 * | |
| 6 * This is part of HarfBuzz, a text shaping library. | |
| 7 * | |
| 8 * Permission is hereby granted, without written agreement and without | |
| 9 * license or royalty fees, to use, copy, modify, and distribute this | |
| 10 * software and its documentation for any purpose, provided that the | |
| 11 * above copyright notice and the following two paragraphs appear in | |
| 12 * all copies of this software. | |
| 13 * | |
| 14 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR | |
| 15 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES | |
| 16 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN | |
| 17 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH | |
| 18 * DAMAGE. | |
| 19 * | |
| 20 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, | |
| 21 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
| 22 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | |
| 23 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO | |
| 24 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 25 * | |
| 26 * Contributor(s): | |
| 27 * Chris Wilson <chris@chris-wilson.co.uk> | |
| 28 * Red Hat Author(s): Behdad Esfahbod | |
| 29 * Google Author(s): Behdad Esfahbod | |
| 30 */ | |
| 31 | |
| 32 #ifndef HB_ATOMIC_PRIVATE_HH | |
| 33 #define HB_ATOMIC_PRIVATE_HH | |
| 34 | |
| 35 #include "hb-private.hh" | |
| 36 | |
| 37 | |
| 38 /* atomic_int */ | |
| 39 | |
| 40 /* We need external help for these */ | |
| 41 | |
| 42 #if 0 | |
| 43 | |
| 44 | |
| 45 #elif !defined(HB_NO_MT) && (defined(_WIN32) || defined(__CYGWIN__)) | |
| 46 | |
| 47 #define WIN32_LEAN_AND_MEAN | |
| 48 #include <windows.h> | |
| 49 | |
| 50 #if defined(__MINGW32__) && !defined(MemoryBarrier) | |
| 51 static inline void _HBMemoryBarrier (void) { | |
| 52 long dummy = 0; | |
| 53 InterlockedExchange (&dummy, 1); | |
| 54 } | |
| 55 # define MemoryBarrier _HBMemoryBarrier | |
| 56 #endif | |
| 57 | |
| 58 typedef LONG hb_atomic_int_t; | |
| 59 #define hb_atomic_int_add(AI, V) InterlockedExchangeAdd (&(AI), (V)) | |
| 60 | |
| 61 #define hb_atomic_ptr_get(P) (MemoryBarrier (), (void *) *(P)) | |
| 62 #define hb_atomic_ptr_cmpexch(P,O,N) (InterlockedCompareExchangePointer ((void **) (P), (void *) (N), (void *) (O)) == (void *) (O)) | |
| 63 | |
| 64 | |
| 65 #elif !defined(HB_NO_MT) && defined(__APPLE__) | |
| 66 | |
| 67 #include <libkern/OSAtomic.h> | |
| 68 #ifdef __MAC_OS_X_MIN_REQUIRED | |
| 69 #include <AvailabilityMacros.h> | |
| 70 #elif defined(__IPHONE_OS_MIN_REQUIRED) | |
| 71 #include <Availability.h> | |
| 72 #endif | |
| 73 | |
| 74 typedef int32_t hb_atomic_int_t; | |
| 75 #define hb_atomic_int_add(AI, V) (OSAtomicAdd32Barrier ((V), &(AI)) - (V)) | |
| 76 | |
| 77 #define hb_atomic_ptr_get(P) (OSMemoryBarrier (), (void *) *(P)) | |
| 78 #if (MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_4 || __IPHONE_VERSION_MIN_REQUIRED >= 20100) | |
| 79 #define hb_atomic_ptr_cmpexch(P,O,N) OSAtomicCompareAndSwapPtrBarrier ((void *) (O), (void *) (N), (void **) (P)) | |
| 80 #else | |
| 81 #if __ppc64__ || __x86_64__ || __arm64__ | |
| 82 #define hb_atomic_ptr_cmpexch(P,O,N) OSAtomicCompareAndSwap64Barrier ((int64_t) (O), (int64_t) (N), (int64_t*) (P)) | |
| 83 #else | |
| 84 #define hb_atomic_ptr_cmpexch(P,O,N) OSAtomicCompareAndSwap32Barrier ((int32_t) (O), (int32_t) (N), (int32_t*) (P)) | |
| 85 #endif | |
| 86 #endif | |
| 87 | |
| 88 | |
| 89 #elif !defined(HB_NO_MT) && defined(HAVE_INTEL_ATOMIC_PRIMITIVES) | |
| 90 | |
| 91 typedef int hb_atomic_int_t; | |
| 92 #define hb_atomic_int_add(AI, V) __sync_fetch_and_add (&(AI), (V)) | |
| 93 | |
| 94 #define hb_atomic_ptr_get(P) (void *) (__sync_synchronize (), *(P)) | |
| 95 #define hb_atomic_ptr_cmpexch(P,O,N) __sync_bool_compare_and_swap ((P), (O), (N)) | |
| 96 | |
| 97 | |
| 98 #elif !defined(HB_NO_MT) && defined(HAVE_SOLARIS_ATOMIC_OPS) | |
| 99 | |
| 100 #include <atomic.h> | |
| 101 #include <mbarrier.h> | |
| 102 | |
| 103 typedef unsigned int hb_atomic_int_t; | |
| 104 #define hb_atomic_int_add(AI, V) ( ({__machine_rw_barrier ();}), atomic_add_int_nv (&(AI), (V)) - (V)) | |
| 105 | |
| 106 #define hb_atomic_ptr_get(P) ( ({__machine_rw_barrier ();}), (void *) *(P)) | |
| 107 #define hb_atomic_ptr_cmpexch(P,O,N) ( ({__machine_rw_barrier ();}), atomic_cas_ptr ((void **) (P), (void *) (O), (void *) (N)) == (void *) (O) ? true : false) | |
| 108 | |
| 109 | |
| 110 #elif !defined(HB_NO_MT) | |
| 111 | |
| 112 #define HB_ATOMIC_INT_NIL 1 /* Warn that fallback implementation is in use. */ | |
| 113 typedef volatile int hb_atomic_int_t; | |
| 114 #define hb_atomic_int_add(AI, V) (((AI) += (V)) - (V)) | |
| 115 | |
| 116 #define hb_atomic_ptr_get(P) ((void *) *(P)) | |
| 117 #define hb_atomic_ptr_cmpexch(P,O,N) (* (void * volatile *) (P) == (void *) (O) ? (* (void * volatile *) (P) = (void *) (N), true) : false) | |
| 118 | |
| 119 | |
| 120 #else /* HB_NO_MT */ | |
| 121 | |
| 122 typedef int hb_atomic_int_t; | |
| 123 #define hb_atomic_int_add(AI, V) (((AI) += (V)) - (V)) | |
| 124 | |
| 125 #define hb_atomic_ptr_get(P) ((void *) *(P)) | |
| 126 #define hb_atomic_ptr_cmpexch(P,O,N) (* (void **) (P) == (void *) (O) ? (* (void **) (P) = (void *) (N), true) : false) | |
| 127 | |
| 128 #endif | |
| 129 | |
| 130 /* TODO Add tracing. */ | |
| 131 | |
| 132 #endif /* HB_ATOMIC_PRIVATE_HH */ |
