server-skynet-source-3rd-je.../include/jemalloc/internal/witness_inlines.h

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#ifndef JEMALLOC_INTERNAL_WITNESS_INLINES_H
#define JEMALLOC_INTERNAL_WITNESS_INLINES_H
#ifndef JEMALLOC_ENABLE_INLINE
bool witness_owner(tsd_t *tsd, const witness_t *witness);
void witness_assert_owner(tsdn_t *tsdn, const witness_t *witness);
void witness_assert_not_owner(tsdn_t *tsdn, const witness_t *witness);
void witness_assert_lockless(tsdn_t *tsdn);
void witness_lock(tsdn_t *tsdn, witness_t *witness);
void witness_unlock(tsdn_t *tsdn, witness_t *witness);
#endif
#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_MUTEX_C_))
/* Helper, not intended for direct use. */
JEMALLOC_INLINE bool
witness_owner(tsd_t *tsd, const witness_t *witness)
{
witness_list_t *witnesses;
witness_t *w;
cassert(config_debug);
witnesses = tsd_witnessesp_get(tsd);
ql_foreach(w, witnesses, link) {
if (w == witness)
return (true);
}
return (false);
}
JEMALLOC_INLINE void
witness_assert_owner(tsdn_t *tsdn, const witness_t *witness)
{
tsd_t *tsd;
if (!config_debug)
return;
if (tsdn_null(tsdn))
return;
tsd = tsdn_tsd(tsdn);
if (witness->rank == WITNESS_RANK_OMIT)
return;
if (witness_owner(tsd, witness))
return;
witness_owner_error(witness);
}
JEMALLOC_INLINE void
witness_assert_not_owner(tsdn_t *tsdn, const witness_t *witness)
{
tsd_t *tsd;
witness_list_t *witnesses;
witness_t *w;
if (!config_debug)
return;
if (tsdn_null(tsdn))
return;
tsd = tsdn_tsd(tsdn);
if (witness->rank == WITNESS_RANK_OMIT)
return;
witnesses = tsd_witnessesp_get(tsd);
ql_foreach(w, witnesses, link) {
if (w == witness)
witness_not_owner_error(witness);
}
}
JEMALLOC_INLINE void
witness_assert_lockless(tsdn_t *tsdn)
{
tsd_t *tsd;
witness_list_t *witnesses;
witness_t *w;
if (!config_debug)
return;
if (tsdn_null(tsdn))
return;
tsd = tsdn_tsd(tsdn);
witnesses = tsd_witnessesp_get(tsd);
w = ql_last(witnesses, link);
if (w != NULL)
witness_lockless_error(witnesses);
}
JEMALLOC_INLINE void
witness_lock(tsdn_t *tsdn, witness_t *witness)
{
tsd_t *tsd;
witness_list_t *witnesses;
witness_t *w;
if (!config_debug)
return;
if (tsdn_null(tsdn))
return;
tsd = tsdn_tsd(tsdn);
if (witness->rank == WITNESS_RANK_OMIT)
return;
witness_assert_not_owner(tsdn, witness);
witnesses = tsd_witnessesp_get(tsd);
w = ql_last(witnesses, link);
if (w == NULL) {
/* No other locks; do nothing. */
} else if (tsd_witness_fork_get(tsd) && w->rank <= witness->rank) {
/* Forking, and relaxed ranking satisfied. */
} else if (w->rank > witness->rank) {
/* Not forking, rank order reversal. */
witness_lock_error(witnesses, witness);
} else if (w->rank == witness->rank && (w->comp == NULL || w->comp !=
witness->comp || w->comp(w, w->opaque, witness, witness->opaque) >
0)) {
/*
* Missing/incompatible comparison function, or comparison
* function indicates rank order reversal.
*/
witness_lock_error(witnesses, witness);
}
ql_elm_new(witness, link);
ql_tail_insert(witnesses, witness, link);
}
JEMALLOC_INLINE void
witness_unlock(tsdn_t *tsdn, witness_t *witness)
{
tsd_t *tsd;
witness_list_t *witnesses;
if (!config_debug)
return;
if (tsdn_null(tsdn))
return;
tsd = tsdn_tsd(tsdn);
if (witness->rank == WITNESS_RANK_OMIT)
return;
/*
* Check whether owner before removal, rather than relying on
* witness_assert_owner() to abort, so that unit tests can test this
* function's failure mode without causing undefined behavior.
*/
if (witness_owner(tsd, witness)) {
witnesses = tsd_witnessesp_get(tsd);
ql_remove(witnesses, witness, link);
} else
witness_assert_owner(tsdn, witness);
}
#endif
#endif /* JEMALLOC_INTERNAL_WITNESS_INLINES_H */