diff options
Diffstat (limited to 'pp_sys.c')
| -rw-r--r-- | pp_sys.c | 17 |
1 files changed, 17 insertions, 0 deletions
@@ -4232,6 +4232,7 @@ PP(pp_fork) sigset_t oldmask, newmask; #endif + EXTEND(SP, 1); PERL_FLUSHALL_FOR_CHILD; #ifdef HAS_SIGPROCMASK @@ -4259,6 +4260,9 @@ PP(pp_fork) #ifdef PERL_USES_PL_PIDSTATUS hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */ #endif + PERL_SRAND_OVERRIDE_NEXT_CHILD(); + } else { + PERL_SRAND_OVERRIDE_NEXT_PARENT(); } PUSHi(childpid); RETURN; @@ -4271,6 +4275,19 @@ PP(pp_fork) childpid = PerlProc_fork(); if (childpid == -1) RETPUSHUNDEF; + else if (childpid) { + /* we are in the parent */ + PERL_SRAND_OVERRIDE_NEXT_PARENT(); + } + else { + /* This is part of the logic supporting the env var + * PERL_RAND_SEED which causes use of rand() without an + * explicit srand() to use a deterministic seed. This logic is + * intended to give most forked children of a process a + * deterministic but different srand seed. + */ + PERL_SRAND_OVERRIDE_NEXT_CHILD(); + } PUSHi(childpid); RETURN; #else |