diff options
Diffstat (limited to 'Master/tlpkg/tlperl/lib/pods/perlfork.pod')
| -rw-r--r-- | Master/tlpkg/tlperl/lib/pods/perlfork.pod | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/Master/tlpkg/tlperl/lib/pods/perlfork.pod b/Master/tlpkg/tlperl/lib/pods/perlfork.pod index 709d053d28e..7729444c40b 100644 --- a/Master/tlpkg/tlperl/lib/pods/perlfork.pod +++ b/Master/tlpkg/tlperl/lib/pods/perlfork.pod @@ -78,10 +78,12 @@ and return its status. =item kill() C<kill('KILL', ...)> can be used to terminate a pseudo-process by -passing it the ID returned by fork(). This should not be used except +passing it the ID returned by fork(). The outcome of kill on a pseudo-process +is unpredictable and it should not be used except under dire circumstances, because the operating system may not guarantee integrity of the process resources when a running thread is -terminated. Note that using C<kill('KILL', ...)> on a +terminated. The process which implements the pseudo-processes can be blocked +and the Perl interpreter hangs. Note that using C<kill('KILL', ...)> on a pseudo-process() may typically cause memory leaks, because the thread that implements the pseudo-process does not get a chance to clean up its resources. @@ -307,6 +309,12 @@ are expected to be fixed for thread-safety. =back +=head1 PORTABILITY CAVEATS + +In portable Perl code, C<kill(9, $child)> must not be used on forked processes. +Killing a forked process is unsafe and has unpredictable results. +See L</kill()>, above. + =head1 BUGS =over 8 |