89e2d3c12b
In order to do this, we introduce the mutex_prof module, which breaks a circular dependency between ctl and prof.
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
#ifndef JEMALLOC_INTERNAL_MUTEX_STRUCTS_H
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#define JEMALLOC_INTERNAL_MUTEX_STRUCTS_H
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#include "jemalloc/internal/atomic.h"
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#include "jemalloc/internal/mutex_prof.h"
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struct malloc_mutex_s {
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union {
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struct {
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/*
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* prof_data is defined first to reduce cacheline
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* bouncing: the data is not touched by the mutex holder
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* during unlocking, while might be modified by
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* contenders. Having it before the mutex itself could
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* avoid prefetching a modified cacheline (for the
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* unlocking thread).
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*/
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mutex_prof_data_t prof_data;
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#ifdef _WIN32
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# if _WIN32_WINNT >= 0x0600
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SRWLOCK lock;
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# else
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CRITICAL_SECTION lock;
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# endif
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#elif (defined(JEMALLOC_OS_UNFAIR_LOCK))
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os_unfair_lock lock;
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#elif (defined(JEMALLOC_OSSPIN))
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OSSpinLock lock;
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#elif (defined(JEMALLOC_MUTEX_INIT_CB))
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pthread_mutex_t lock;
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malloc_mutex_t *postponed_next;
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#else
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pthread_mutex_t lock;
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#endif
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};
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/*
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* We only touch witness when configured w/ debug. However we
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* keep the field in a union when !debug so that we don't have
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* to pollute the code base with #ifdefs, while avoid paying the
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* memory cost.
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*/
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#if !defined(JEMALLOC_DEBUG)
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witness_t witness;
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#endif
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};
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#if defined(JEMALLOC_DEBUG)
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witness_t witness;
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#endif
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};
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#endif /* JEMALLOC_INTERNAL_MUTEX_STRUCTS_H */
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