mirror of git://gcc.gnu.org/git/gcc.git
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
// locks.h - Thread synchronization primitives. SuperH implementation.
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/* Copyright (C) 2002, 2007 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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#ifndef __SYSDEP_LOCKS_H__
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#define __SYSDEP_LOCKS_H__
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typedef size_t obj_addr_t; /* Integer type big enough for object */
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/* address. */
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inline static bool
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compare_and_swap (volatile obj_addr_t *addr, obj_addr_t old,
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obj_addr_t new_val)
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{
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return __sync_bool_compare_and_swap (addr, old, new_val);
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}
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inline static void
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release_set (volatile obj_addr_t *addr, obj_addr_t new_val)
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{
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__asm__ __volatile__ (" " : : : "memory");
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*(addr) = new_val;
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}
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inline static bool
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compare_and_swap_release (volatile obj_addr_t *addr, obj_addr_t old,
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obj_addr_t new_val)
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{
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return compare_and_swap (addr, old, new_val);
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}
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inline static void
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read_barrier()
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{
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__asm__ __volatile__(" " : : : "memory");
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}
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inline static void
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write_barrier()
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{
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__asm__ __volatile__(" " : : : "memory");
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}
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#endif /* ! __SYSDEP_LOCKS_H__ */
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