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make r/w lock shared only if there is a shared file as well

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This commit is contained in:
krangelov
2021-11-16 08:53:22 +01:00
parent c80ef3549c
commit f5e6c695a7
1 changed files with 5 additions and 3 deletions
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2
src/runtime/c/pgf/db.cxx
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@@ -690,10 +690,12 @@ void PgfDB::init_state(size_t size)
if ((code = pthread_rwlockattr_init(&attr)) != 0) { if ((code = pthread_rwlockattr_init(&attr)) != 0) {
throw pgf_systemerror(code); throw pgf_systemerror(code);
} }
if (fd > 0) {
if ((code = pthread_rwlockattr_setpshared(&attr, PTHREAD_PROCESS_SHARED)) != 0) { if ((code = pthread_rwlockattr_setpshared(&attr, PTHREAD_PROCESS_SHARED)) != 0) {
pthread_rwlockattr_destroy(&attr); pthread_rwlockattr_destroy(&attr);
throw pgf_systemerror(code); throw pgf_systemerror(code);
} }
}
if ((code = pthread_rwlock_init(&ms->rwlock, &attr)) != 0) { if ((code = pthread_rwlock_init(&ms->rwlock, &attr)) != 0) {
pthread_rwlockattr_destroy(&attr); pthread_rwlockattr_destroy(&attr);
throw pgf_systemerror(code); throw pgf_systemerror(code);