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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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src/jemalloc.c
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@ -3470,6 +3470,7 @@ _malloc_prefork(void)
}
}
prof_prefork1(tsd_tsdn(tsd));
tsd_prefork(tsd);
}
#ifndef JEMALLOC_MUTEX_INIT_CB
@ -3492,6 +3493,8 @@ _malloc_postfork(void)
tsd = tsd_fetch();
tsd_postfork_parent(tsd);
witness_postfork_parent(tsd_witness_tsdp_get(tsd));
/* Release all mutexes, now that fork() has completed. */
for (i = 0, narenas = narenas_total_get(); i < narenas; i++) {
@ -3519,6 +3522,8 @@ jemalloc_postfork_child(void) {
tsd = tsd_fetch();
tsd_postfork_child(tsd);
witness_postfork_child(tsd_witness_tsdp_get(tsd));
/* Release all mutexes, now that fork() has completed. */
for (i = 0, narenas = narenas_total_get(); i < narenas; i++) {