Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2007 Chris Wilson |
| 3 | * Copyright © 2009,2010 Red Hat, Inc. |
Behdad Esfahbod | 34961e3 | 2012-05-17 20:50:38 -0400 | [diff] [blame] | 4 | * Copyright © 2011,2012 Google, Inc. |
Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 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 | |
Behdad Esfahbod | 022a05a | 2012-05-17 21:53:24 -0400 | [diff] [blame] | 42 | #if 0 |
Behdad Esfahbod | 34961e3 | 2012-05-17 20:50:38 -0400 | [diff] [blame] | 43 | |
Behdad Esfahbod | 022a05a | 2012-05-17 21:53:24 -0400 | [diff] [blame] | 44 | |
| 45 | #elif !defined(HB_NO_MT) && defined(_MSC_VER) && _MSC_VER >= 1600 |
Behdad Esfahbod | 34961e3 | 2012-05-17 20:50:38 -0400 | [diff] [blame] | 46 | |
| 47 | #include <intrin.h> |
Behdad Esfahbod | 391f1ff | 2012-07-13 09:04:07 -0400 | [diff] [blame] | 48 | /* On x86, _InterlockedCompareExchangePointer is a macro defined in concrt.h */ |
Behdad Esfahbod | 391f1ff | 2012-07-13 09:04:07 -0400 | [diff] [blame] | 49 | #include <concrt.h> |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 50 | |
Behdad Esfahbod | 34961e3 | 2012-05-17 20:50:38 -0400 | [diff] [blame] | 51 | typedef long hb_atomic_int_t; |
Behdad Esfahbod | 22afd66 | 2012-05-17 21:23:49 -0400 | [diff] [blame] | 52 | #define hb_atomic_int_add(AI, V) _InterlockedExchangeAdd (&(AI), (V)) |
Behdad Esfahbod | 34961e3 | 2012-05-17 20:50:38 -0400 | [diff] [blame] | 53 | |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 54 | #define hb_atomic_ptr_get(P) (MemoryBarrier (), (void *) *(P)) |
Behdad Esfahbod | 04bc1ee | 2012-06-05 20:16:56 -0400 | [diff] [blame] | 55 | #define hb_atomic_ptr_cmpexch(P,O,N) (_InterlockedCompareExchangePointer ((void **) (P), (void *) (N), (void *) (O)) == (void *) (O)) |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 56 | |
Behdad Esfahbod | 34961e3 | 2012-05-17 20:50:38 -0400 | [diff] [blame] | 57 | |
| 58 | #elif !defined(HB_NO_MT) && defined(__APPLE__) |
| 59 | |
| 60 | #include <libkern/OSAtomic.h> |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 61 | |
Behdad Esfahbod | 34961e3 | 2012-05-17 20:50:38 -0400 | [diff] [blame] | 62 | typedef int32_t hb_atomic_int_t; |
Behdad Esfahbod | a354733 | 2012-05-27 10:20:47 -0400 | [diff] [blame] | 63 | #define hb_atomic_int_add(AI, V) (OSAtomicAdd32Barrier ((V), &(AI)) - (V)) |
Behdad Esfahbod | 34961e3 | 2012-05-17 20:50:38 -0400 | [diff] [blame] | 64 | |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 65 | #define hb_atomic_ptr_get(P) (OSMemoryBarrier (), (void *) *(P)) |
Behdad Esfahbod | 04bc1ee | 2012-06-05 20:16:56 -0400 | [diff] [blame] | 66 | #define hb_atomic_ptr_cmpexch(P,O,N) OSAtomicCompareAndSwapPtrBarrier ((void *) (O), (void *) (N), (void **) (P)) |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 67 | |
Behdad Esfahbod | 34961e3 | 2012-05-17 20:50:38 -0400 | [diff] [blame] | 68 | |
Behdad Esfahbod | 12f5c0a | 2012-06-26 11:16:13 -0400 | [diff] [blame] | 69 | #elif !defined(HB_NO_MT) && defined(HAVE_INTEL_ATOMIC_PRIMITIVES) |
Behdad Esfahbod | d970d28 | 2012-06-05 16:06:28 -0400 | [diff] [blame] | 70 | |
| 71 | typedef int hb_atomic_int_t; |
| 72 | #define hb_atomic_int_add(AI, V) __sync_fetch_and_add (&(AI), (V)) |
| 73 | |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 74 | #define hb_atomic_ptr_get(P) (void *) (__sync_synchronize (), *(P)) |
| 75 | #define hb_atomic_ptr_cmpexch(P,O,N) __sync_bool_compare_and_swap ((P), (O), (N)) |
| 76 | |
Behdad Esfahbod | 34961e3 | 2012-05-17 20:50:38 -0400 | [diff] [blame] | 77 | #elif !defined(HB_NO_MT) && defined(HAVE_GLIB) |
Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 78 | |
| 79 | #include <glib.h> |
Behdad Esfahbod | d970d28 | 2012-06-05 16:06:28 -0400 | [diff] [blame] | 80 | typedef int hb_atomic_int_t; |
Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 81 | #if GLIB_CHECK_VERSION(2,29,5) |
Behdad Esfahbod | 22afd66 | 2012-05-17 21:23:49 -0400 | [diff] [blame] | 82 | #define hb_atomic_int_add(AI, V) g_atomic_int_add (&(AI), (V)) |
Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 83 | #else |
Behdad Esfahbod | 22afd66 | 2012-05-17 21:23:49 -0400 | [diff] [blame] | 84 | #define hb_atomic_int_add(AI, V) g_atomic_int_exchange_and_add (&(AI), (V)) |
Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 85 | #endif |
Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 86 | |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 87 | #define hb_atomic_ptr_get(P) g_atomic_pointer_get (P) |
Behdad Esfahbod | 04bc1ee | 2012-06-05 20:16:56 -0400 | [diff] [blame] | 88 | #define hb_atomic_ptr_cmpexch(P,O,N) g_atomic_pointer_compare_and_exchange ((void **) (P), (void *) (O), (void *) (N)) |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 89 | |
Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 90 | |
Behdad Esfahbod | cdafe3a | 2012-06-05 16:34:49 -0400 | [diff] [blame] | 91 | #elif !defined(HB_NO_MT) |
Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 92 | |
Behdad Esfahbod | cdafe3a | 2012-06-05 16:34:49 -0400 | [diff] [blame] | 93 | #define HB_ATOMIC_INT_NIL 1 /* Warn that fallback implementation is in use. */ |
| 94 | typedef volatile int hb_atomic_int_t; |
| 95 | #define hb_atomic_int_add(AI, V) (((AI) += (V)) - (V)) |
| 96 | |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 97 | #define hb_atomic_ptr_get(P) ((void *) *(P)) |
Behdad Esfahbod | 0594a24 | 2012-06-05 20:35:40 -0400 | [diff] [blame] | 98 | #define hb_atomic_ptr_cmpexch(P,O,N) (* (void * volatile *) (P) == (void *) (O) ? (* (void * volatile *) (P) = (void *) (N), true) : false) |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 99 | |
Behdad Esfahbod | cdafe3a | 2012-06-05 16:34:49 -0400 | [diff] [blame] | 100 | |
| 101 | #else /* HB_NO_MT */ |
| 102 | |
Behdad Esfahbod | d970d28 | 2012-06-05 16:06:28 -0400 | [diff] [blame] | 103 | typedef int hb_atomic_int_t; |
Behdad Esfahbod | 819faa0 | 2012-05-27 10:09:18 -0400 | [diff] [blame] | 104 | #define hb_atomic_int_add(AI, V) (((AI) += (V)) - (V)) |
Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 105 | |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 106 | #define hb_atomic_ptr_get(P) ((void *) *(P)) |
Behdad Esfahbod | 0594a24 | 2012-06-05 20:35:40 -0400 | [diff] [blame] | 107 | #define hb_atomic_ptr_cmpexch(P,O,N) (* (void **) (P) == (void *) (O) ? (* (void **) (P) = (void *) (N), true) : false) |
Behdad Esfahbod | 6843ce0 | 2012-06-05 17:27:20 -0400 | [diff] [blame] | 108 | |
Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 109 | #endif |
| 110 | |
Behdad Esfahbod | cdafe3a | 2012-06-05 16:34:49 -0400 | [diff] [blame] | 111 | /* TODO Add tracing. */ |
Behdad Esfahbod | ec3ba4b | 2012-05-17 20:30:46 -0400 | [diff] [blame] | 112 | |
| 113 | #endif /* HB_ATOMIC_PRIVATE_HH */ |