c8d3877e48
This new header file provides heavy-weight "global" memory barriers that enforce memory ordering on each running thread belonging to the current process. For now, use a dummy implementation that issues memory barriers on both sides (matching what QEMU has been doing so far). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
18 lines
405 B
C
18 lines
405 B
C
/*
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* Process-global memory barriers
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*
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* Copyright (c) 2018 Red Hat, Inc.
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*
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* Author: Paolo Bonzini <pbonzini@redhat.com>
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*/
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#ifndef QEMU_SYS_MEMBARRIER_H
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#define QEMU_SYS_MEMBARRIER_H 1
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/* Keep it simple, execute a real memory barrier on both sides. */
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static inline void smp_mb_global_init(void) {}
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#define smp_mb_global() smp_mb()
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#define smp_mb_placeholder() smp_mb()
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#endif
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