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Add a test case for waitpid(): from Rocco Caputo.
authorJarkko Hietaniemi <jhi@iki.fi>
Mon, 10 Dec 2001 00:38:09 +0000 (00:38 +0000)
committerJarkko Hietaniemi <jhi@iki.fi>
Mon, 10 Dec 2001 00:38:09 +0000 (00:38 +0000)
p4raw-id: //depot/perl@13577

MANIFEST
ext/POSIX/t/waitpid.t [new file with mode: 0644]

index b8ccc88..34a181f 100644 (file)
--- a/MANIFEST
+++ b/MANIFEST
@@ -489,6 +489,7 @@ ext/POSIX/POSIX.pod         POSIX extension documentation
 ext/POSIX/POSIX.xs             POSIX extension external subroutines
 ext/POSIX/t/posix.t            See if POSIX works
 ext/POSIX/t/sigaction.t                See if POSIX::sigaction works
+ext/POSIX/t/waitpid.t          See if waitpid works
 ext/POSIX/typemap              POSIX extension interface types
 ext/re/hints/mpeix.pl          Hints for re for named architecture
 ext/re/Makefile.PL             re extension makefile writer
diff --git a/ext/POSIX/t/waitpid.t b/ext/POSIX/t/waitpid.t
new file mode 100644 (file)
index 0000000..1263673
--- /dev/null
@@ -0,0 +1,88 @@
+BEGIN {
+       chdir 't' if -d 't';
+       unshift @INC, '../lib';
+}
+
+BEGIN {
+    use Config;
+    unless ($Config{d_fork}) {
+       print "1..0 # no fork\n";
+       exit 0;
+    }
+    eval { use POSIX qw(sys_wait_h) };
+    if ($@) {
+       print "1..0 # no POSIX sys_wait_h\n";
+       exit 0;
+    }
+    eval { use Time::HiRes };
+    if ($@) {
+       print "1..0 # no Time::HiRes\n";
+       exit 0;
+    }
+}
+
+use warnings;
+use strict;
+
+use Time::HiRes qw(time);
+
+$| = 1;
+
+sub NEG1_PROHIBITED () { 0x01 }
+sub NEG1_REQUIRED   () { 0x02 }
+
+my $count     = 0;
+my $max_count = 9;
+my $state     = NEG1_PROHIBITED;
+
+my $child_pid = fork();
+
+# Parent receives a nonzero child PID.
+
+if ($child_pid) {
+    my $ok = 1;
+
+    while ($count++ < $max_count) {   
+       my $begin_time = time();        
+       my $ret = waitpid( -1, WNOHANG );          
+       my $elapsed_time = time() - $begin_time;
+       
+       printf( "# waitpid(-1,WNOHANG) returned %d after %.2f seconds\n",
+               $ret, $elapsed_time );
+       if ($elapsed_time > 0.5) {
+           printf( "# %.2f seconds in non-blocking waitpid is too long!\n",
+                   $elapsed_time );
+           $ok = 0;
+           last;
+       }
+       
+       if ($state & NEG1_PROHIBITED) { 
+           if ($ret == -1) {
+               print "# waitpid should not have returned -1 here!\n";
+               $ok = 0;
+               last;
+           }
+           elsif ($ret == $child_pid) {
+               $state = NEG1_REQUIRED;
+           }
+       }
+       elsif ($state & NEG1_REQUIRED) {
+           unless ($ret == -1) {
+               print "# waitpid should have returned -1 here\n";
+               $ok = 0;
+           }
+           last;
+       }
+       
+       sleep(1);
+    }
+    print $ok ? "ok 1\n" : "not ok 1\n";
+    exit(0); # parent 
+} else {
+    # Child receives a zero PID and can request parent's PID with
+    # getppid().
+    sleep(3);
+    exit(0);
+}
+
+