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Diffstat (limited to 'Build/source/libs/cairo/cairo-1.12.14/src/cairo-atomic-private.h')
-rw-r--r-- | Build/source/libs/cairo/cairo-1.12.14/src/cairo-atomic-private.h | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/Build/source/libs/cairo/cairo-1.12.14/src/cairo-atomic-private.h b/Build/source/libs/cairo/cairo-1.12.14/src/cairo-atomic-private.h new file mode 100644 index 00000000000..327fed1d928 --- /dev/null +++ b/Build/source/libs/cairo/cairo-1.12.14/src/cairo-atomic-private.h @@ -0,0 +1,272 @@ +/* cairo - a vector graphics library with display and print output + * + * Copyright © 2007 Chris Wilson + * Copyright © 2010 Andrea Canciani + * + * This library is free software; you can redistribute it and/or + * modify it either under the terms of the GNU Lesser General Public + * License version 2.1 as published by the Free Software Foundation + * (the "LGPL") or, at your option, under the terms of the Mozilla + * Public License Version 1.1 (the "MPL"). If you do not alter this + * notice, a recipient may use your version of this file under either + * the MPL or the LGPL. + * + * You should have received a copy of the LGPL along with this library + * in the file COPYING-LGPL-2.1; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA + * You should have received a copy of the MPL along with this library + * in the file COPYING-MPL-1.1 + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "License"); you may not use this file except in + * compliance with the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY + * OF ANY KIND, either express or implied. See the LGPL or the MPL for + * the specific language governing rights and limitations. + * + * The Original Code is the cairo graphics library. + * + * The Initial Developer of the Original Code is University of Southern + * California. + * + * Contributor(s): + * Chris Wilson <chris@chris-wilson.co.uk> + * Andrea Canciani <ranma42@gmail.com> + */ + +#ifndef CAIRO_ATOMIC_PRIVATE_H +#define CAIRO_ATOMIC_PRIVATE_H + +# include "cairo-compiler-private.h" + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +/* The autoconf on OpenBSD 4.5 produces the malformed constant name + * SIZEOF_VOID__ rather than SIZEOF_VOID_P. Work around that here. */ +#if !defined(SIZEOF_VOID_P) && defined(SIZEOF_VOID__) +# define SIZEOF_VOID_P SIZEOF_VOID__ +#endif + +CAIRO_BEGIN_DECLS + +#if HAVE_INTEL_ATOMIC_PRIMITIVES + +#define HAS_ATOMIC_OPS 1 + +typedef int cairo_atomic_int_t; + +#ifdef ATOMIC_OP_NEEDS_MEMORY_BARRIER +static cairo_always_inline cairo_atomic_int_t +_cairo_atomic_int_get (cairo_atomic_int_t *x) +{ + __sync_synchronize (); + return *x; +} + +static cairo_always_inline void * +_cairo_atomic_ptr_get (void **x) +{ + __sync_synchronize (); + return *x; +} +#else +# define _cairo_atomic_int_get(x) (*x) +# define _cairo_atomic_ptr_get(x) (*x) +#endif + +# define _cairo_atomic_int_inc(x) ((void) __sync_fetch_and_add(x, 1)) +# define _cairo_atomic_int_dec(x) ((void) __sync_fetch_and_add(x, -1)) +# define _cairo_atomic_int_dec_and_test(x) (__sync_fetch_and_add(x, -1) == 1) +# define _cairo_atomic_int_cmpxchg(x, oldv, newv) __sync_bool_compare_and_swap (x, oldv, newv) +# define _cairo_atomic_int_cmpxchg_return_old(x, oldv, newv) __sync_val_compare_and_swap (x, oldv, newv) + +#if SIZEOF_VOID_P==SIZEOF_INT +typedef int cairo_atomic_intptr_t; +#elif SIZEOF_VOID_P==SIZEOF_LONG +typedef long cairo_atomic_intptr_t; +#elif SIZEOF_VOID_P==SIZEOF_LONG_LONG +typedef long long cairo_atomic_intptr_t; +#else +#error No matching integer pointer type +#endif + +# define _cairo_atomic_ptr_cmpxchg(x, oldv, newv) \ + __sync_bool_compare_and_swap ((cairo_atomic_intptr_t*)x, (cairo_atomic_intptr_t)oldv, (cairo_atomic_intptr_t)newv) + +# define _cairo_atomic_ptr_cmpxchg_return_old(x, oldv, newv) \ + _cairo_atomic_intptr_to_voidptr (__sync_val_compare_and_swap ((cairo_atomic_intptr_t*)x, (cairo_atomic_intptr_t)oldv, (cairo_atomic_intptr_t)newv)) + +#endif + +#if HAVE_LIB_ATOMIC_OPS +#include <atomic_ops.h> + +#define HAS_ATOMIC_OPS 1 + +typedef AO_t cairo_atomic_int_t; + +# define _cairo_atomic_int_get(x) (AO_load_full (x)) + +# define _cairo_atomic_int_inc(x) ((void) AO_fetch_and_add1_full(x)) +# define _cairo_atomic_int_dec(x) ((void) AO_fetch_and_sub1_full(x)) +# define _cairo_atomic_int_dec_and_test(x) (AO_fetch_and_sub1_full(x) == 1) +# define _cairo_atomic_int_cmpxchg(x, oldv, newv) AO_compare_and_swap_full(x, oldv, newv) + +#if SIZEOF_VOID_P==SIZEOF_INT +typedef unsigned int cairo_atomic_intptr_t; +#elif SIZEOF_VOID_P==SIZEOF_LONG +typedef unsigned long cairo_atomic_intptr_t; +#elif SIZEOF_VOID_P==SIZEOF_LONG_LONG +typedef unsigned long long cairo_atomic_intptr_t; +#else +#error No matching integer pointer type +#endif + +# define _cairo_atomic_ptr_get(x) _cairo_atomic_intptr_to_voidptr (AO_load_full (x)) +# define _cairo_atomic_ptr_cmpxchg(x, oldv, newv) \ + _cairo_atomic_int_cmpxchg ((cairo_atomic_intptr_t*)(x), (cairo_atomic_intptr_t)oldv, (cairo_atomic_intptr_t)newv) + +#endif + +#if HAVE_OS_ATOMIC_OPS +#include <libkern/OSAtomic.h> + +#define HAS_ATOMIC_OPS 1 + +typedef int32_t cairo_atomic_int_t; + +# define _cairo_atomic_int_get(x) (OSMemoryBarrier(), *(x)) + +# define _cairo_atomic_int_inc(x) ((void) OSAtomicIncrement32Barrier (x)) +# define _cairo_atomic_int_dec(x) ((void) OSAtomicDecrement32Barrier (x)) +# define _cairo_atomic_int_dec_and_test(x) (OSAtomicDecrement32Barrier (x) == 0) +# define _cairo_atomic_int_cmpxchg(x, oldv, newv) OSAtomicCompareAndSwap32Barrier(oldv, newv, x) + +#if SIZEOF_VOID_P==4 +typedef int32_t cairo_atomic_intptr_t; +# define _cairo_atomic_ptr_cmpxchg(x, oldv, newv) \ + OSAtomicCompareAndSwap32Barrier((cairo_atomic_intptr_t)oldv, (cairo_atomic_intptr_t)newv, (cairo_atomic_intptr_t *)x) + +#elif SIZEOF_VOID_P==8 +typedef int64_t cairo_atomic_intptr_t; +# define _cairo_atomic_ptr_cmpxchg(x, oldv, newv) \ + OSAtomicCompareAndSwap64Barrier((cairo_atomic_intptr_t)oldv, (cairo_atomic_intptr_t)newv, (cairo_atomic_intptr_t *)x) + +#else +#error No matching integer pointer type +#endif + +# define _cairo_atomic_ptr_get(x) (OSMemoryBarrier(), *(x)) + +#endif + +#ifndef HAS_ATOMIC_OPS + +#if SIZEOF_VOID_P==SIZEOF_INT +typedef unsigned int cairo_atomic_intptr_t; +#elif SIZEOF_VOID_P==SIZEOF_LONG +typedef unsigned long cairo_atomic_intptr_t; +#elif SIZEOF_VOID_P==SIZEOF_LONG_LONG +typedef unsigned long long cairo_atomic_intptr_t; +#else +#error No matching integer pointer type +#endif + +typedef cairo_atomic_intptr_t cairo_atomic_int_t; + +cairo_private void +_cairo_atomic_int_inc (cairo_atomic_int_t *x); + +#define _cairo_atomic_int_dec(x) _cairo_atomic_int_dec_and_test(x) + +cairo_private cairo_bool_t +_cairo_atomic_int_dec_and_test (cairo_atomic_int_t *x); + +cairo_private cairo_atomic_int_t +_cairo_atomic_int_cmpxchg_return_old_impl (cairo_atomic_int_t *x, cairo_atomic_int_t oldv, cairo_atomic_int_t newv); + +cairo_private void * +_cairo_atomic_ptr_cmpxchg_return_old_impl (void **x, void *oldv, void *newv); + +#define _cairo_atomic_int_cmpxchg_return_old(x, oldv, newv) _cairo_atomic_int_cmpxchg_return_old_impl (x, oldv, newv) +#define _cairo_atomic_ptr_cmpxchg_return_old(x, oldv, newv) _cairo_atomic_ptr_cmpxchg_return_old_impl (x, oldv, newv) + +#ifdef ATOMIC_OP_NEEDS_MEMORY_BARRIER +cairo_private cairo_atomic_int_t +_cairo_atomic_int_get (cairo_atomic_int_t *x); +# define _cairo_atomic_ptr_get(x) (void *) _cairo_atomic_int_get((cairo_atomic_int_t *) x) +#else +# define _cairo_atomic_int_get(x) (*x) +# define _cairo_atomic_ptr_get(x) (*x) +#endif + +#else + +/* Workaround GCC complaining about casts */ +static cairo_always_inline void * +_cairo_atomic_intptr_to_voidptr (cairo_atomic_intptr_t x) +{ + return (void *) x; +} + +static cairo_always_inline cairo_atomic_int_t +_cairo_atomic_int_cmpxchg_return_old_fallback(cairo_atomic_int_t *x, cairo_atomic_int_t oldv, cairo_atomic_int_t newv) +{ + cairo_atomic_int_t curr; + + do { + curr = _cairo_atomic_int_get (x); + } while (curr == oldv && !_cairo_atomic_int_cmpxchg (x, oldv, newv)); + + return curr; +} + +static cairo_always_inline void * +_cairo_atomic_ptr_cmpxchg_return_old_fallback(void **x, void *oldv, void *newv) +{ + void *curr; + + do { + curr = _cairo_atomic_ptr_get (x); + } while (curr == oldv && !_cairo_atomic_ptr_cmpxchg (x, oldv, newv)); + + return curr; +} +#endif + +#ifndef _cairo_atomic_int_cmpxchg_return_old +#define _cairo_atomic_int_cmpxchg_return_old(x, oldv, newv) _cairo_atomic_int_cmpxchg_return_old_fallback (x, oldv, newv) +#endif + +#ifndef _cairo_atomic_ptr_cmpxchg_return_old +#define _cairo_atomic_ptr_cmpxchg_return_old(x, oldv, newv) _cairo_atomic_ptr_cmpxchg_return_old_fallback (x, oldv, newv) +#endif + +#ifndef _cairo_atomic_int_cmpxchg +#define _cairo_atomic_int_cmpxchg(x, oldv, newv) (_cairo_atomic_int_cmpxchg_return_old (x, oldv, newv) == oldv) +#endif + +#ifndef _cairo_atomic_ptr_cmpxchg +#define _cairo_atomic_ptr_cmpxchg(x, oldv, newv) (_cairo_atomic_ptr_cmpxchg_return_old (x, oldv, newv) == oldv) +#endif + +#define _cairo_atomic_uint_get(x) _cairo_atomic_int_get(x) +#define _cairo_atomic_uint_cmpxchg(x, oldv, newv) \ + _cairo_atomic_int_cmpxchg((cairo_atomic_int_t *)x, oldv, newv) + +#define _cairo_status_set_error(status, err) do { \ + int ret__; \ + assert (err < CAIRO_STATUS_LAST_STATUS); \ + /* hide compiler warnings about cairo_status_t != int (gcc treats its as \ + * an unsigned integer instead, and about ignoring the return value. */ \ + ret__ = _cairo_atomic_int_cmpxchg ((cairo_atomic_int_t *) status, CAIRO_STATUS_SUCCESS, err); \ + (void) ret__; \ +} while (0) + +CAIRO_END_DECLS + +#endif |