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TSD: Add fork support to tsd_nominal_tsds.

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In case of multithreaded fork, we want to leave the child in a reasonable state,
in which tsd_nominal_tsds is either empty or contains only the forking thread.
This commit is contained in:
David Goldblatt
2018-07-26 14:42:37 -07:00
committed by David Goldblatt
parent 013ab26c86
commit 41b7372ead
3 changed files with 28 additions and 0 deletions
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20
src/tsd.c
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@@ -509,3 +509,23 @@ tsd_init_finish(tsd_init_head_t *head, tsd_init_block_t *block) {
malloc_mutex_unlock(TSDN_NULL, &head->lock);
}
#endif
void
tsd_prefork(tsd_t *tsd) {
malloc_mutex_prefork(tsd_tsdn(tsd), &tsd_nominal_tsds_lock);
}
void
tsd_postfork_parent(tsd_t *tsd) {
malloc_mutex_postfork_parent(tsd_tsdn(tsd), &tsd_nominal_tsds_lock);
}
void
tsd_postfork_child(tsd_t *tsd) {
malloc_mutex_postfork_child(tsd_tsdn(tsd), &tsd_nominal_tsds_lock);
ql_new(&tsd_nominal_tsds);
if (tsd_state_get(tsd) <= tsd_state_nominal_max) {
tsd_add_nominal(tsd);
}
}