src/witness.c

#define JEMALLOC_WITNESS_C_
#include "jemalloc/internal/jemalloc_internal.h"

void
witness_init(witness_t *witness, const char *name, witness_rank_t rank,
    witness_comp_t *comp, void *opaque) {
	witness->name = name;
	witness->rank = rank;
	witness->comp = comp;
	witness->opaque = opaque;
}

#ifdef JEMALLOC_JET
#undef witness_lock_error
#define witness_lock_error JEMALLOC_N(n_witness_lock_error)
#endif
void
witness_lock_error(const witness_list_t *witnesses, const witness_t *witness) {
	witness_t *w;

	malloc_printf("<jemalloc>: Lock rank order reversal:");
	ql_foreach(w, witnesses, link) {
		malloc_printf(" %s(%u)", w->name, w->rank);
	}
	malloc_printf(" %s(%u)\n", witness->name, witness->rank);
	abort();
}
#ifdef JEMALLOC_JET
#undef witness_lock_error
#define witness_lock_error JEMALLOC_N(witness_lock_error)
witness_lock_error_t *witness_lock_error = JEMALLOC_N(n_witness_lock_error);
#endif

#ifdef JEMALLOC_JET
#undef witness_owner_error
#define witness_owner_error JEMALLOC_N(n_witness_owner_error)
#endif
void
witness_owner_error(const witness_t *witness) {
	malloc_printf("<jemalloc>: Should own %s(%u)\n", witness->name,
	    witness->rank);
	abort();
}
#ifdef JEMALLOC_JET
#undef witness_owner_error
#define witness_owner_error JEMALLOC_N(witness_owner_error)
witness_owner_error_t *witness_owner_error = JEMALLOC_N(n_witness_owner_error);
#endif

#ifdef JEMALLOC_JET
#undef witness_not_owner_error
#define witness_not_owner_error JEMALLOC_N(n_witness_not_owner_error)
#endif
void
witness_not_owner_error(const witness_t *witness) {
	malloc_printf("<jemalloc>: Should not own %s(%u)\n", witness->name,
	    witness->rank);
	abort();
}
#ifdef JEMALLOC_JET
#undef witness_not_owner_error
#define witness_not_owner_error JEMALLOC_N(witness_not_owner_error)
witness_not_owner_error_t *witness_not_owner_error =
    JEMALLOC_N(n_witness_not_owner_error);
#endif

#ifdef JEMALLOC_JET
#undef witness_depth_error
#define witness_depth_error JEMALLOC_N(n_witness_depth_error)
#endif
void
witness_depth_error(const witness_list_t *witnesses,
    witness_rank_t rank_inclusive, unsigned depth) {
	witness_t *w;

	malloc_printf("<jemalloc>: Should own %u lock%s of rank >= %u:", depth,
	    (depth != 1) ?  "s" : "", rank_inclusive);
	ql_foreach(w, witnesses, link) {
		malloc_printf(" %s(%u)", w->name, w->rank);
	}
	malloc_printf("\n");
	abort();
}
#ifdef JEMALLOC_JET
#undef witness_depth_error
#define witness_depth_error JEMALLOC_N(witness_depth_error)
witness_depth_error_t *witness_depth_error = JEMALLOC_N(n_witness_depth_error);
#endif

void
witnesses_cleanup(tsd_t *tsd) {
	witness_assert_lockless(tsd_tsdn(tsd));

	/* Do nothing. */
}

void
witness_prefork(tsd_t *tsd) {
	if (!config_debug) {
		return;
	}
	tsd_witness_fork_set(tsd, true);
}

void
witness_postfork_parent(tsd_t *tsd) {
	if (!config_debug) {
		return;
	}
	tsd_witness_fork_set(tsd, false);
}

void
witness_postfork_child(tsd_t *tsd) {
	if (!config_debug) {
		return;
	}
#ifndef JEMALLOC_MUTEX_INIT_CB
	witness_list_t *witnesses;

	witnesses = tsd_witnessesp_get(tsd);
	ql_new(witnesses);
#endif
	tsd_witness_fork_set(tsd, false);
}