From: Koji Arai <JCA02266@...>
Date: 2001-04-02T01:59:17+09:00
Subject: [ruby-dev:12719] Process.waitall (Re:  [BUG] Process::Status)

新井です。

Process.waitall が ステータス値を返していたので 
Process::Status を返すようにしました．

また、以前、提案したように waktall がブロックを持てるように
してみました．(そうしなかった理由がありました？)

5.times {|n| fork { exit n } }
p Process.waitall {|pid, status|
  case
  when status.signaled?
    p "child #{pid} was killed by signal #{status.termsig}"
  when status.stopped?
    # 実際には Process.wait を使用しているので，ここに来ることはない
    p "child #{pid} was stopped by signal #{status.stopsig}"
  when status.exited?
    p "child #{pid} exited normaly. status=#{status.exitstatus}"
  when status.coredump?
    p "child #{pid} dumped core."
  else
    p "unknown status %#x" % status.to_i
  end
}

=> "child 4930 exited normaly. status=4"
   "child 4929 exited normaly. status=3"
   "child 4928 exited normaly. status=2"
   "child 4927 exited normaly. status=1"
   "child 4926 exited normaly. status=0"
[nil, nil, nil, nil, nil]

ブロックを伴う場合の waitall の戻り値を各ブロックの戻り値の
配列にしましたが、これは余計だったような気が今はしてます。

In message "[ruby-dev:12715] [BUG] Process::Status"
  on 01 Apr 2001 18:38:33 +0900,
  Koji Arai <JCA02266@nifty.ne.jp> wrote:
> 新井です。
> 
> Process::Status にバグがありました。

このパッチも含みます．


Index: process.c
===================================================================
RCS file: /src/ruby/process.c,v
retrieving revision 1.33
diff -u -p -u -r1.33 process.c
--- process.c	2001/03/28 08:43:25	1.33
+++ process.c	2001/04/01 16:54:33
@@ -170,7 +170,7 @@ pst_wifsignaled(st)
 {
     int status = NUM2INT(st);
 
-    if (WIFSIGNALED(st))
+    if (WIFSIGNALED(status))
 	return Qtrue;
     else
 	return Qfalse;
@@ -418,6 +418,8 @@ proc_waitall()
 {
     VALUE pid_status_ary, pid_status_member;
     int pid, status;
+
+    rb_last_status = Qnil;
 #ifdef NO_WAITPID
     struct waitall_data data;
 
@@ -440,13 +442,13 @@ proc_waitall()
 	    }
 	    rb_sys_fail(0);
 	}
-	pid_status_member = rb_ary_new2(2);
-	rb_ary_push(pid_status_member, INT2NUM(pid));
-	rb_ary_push(pid_status_member, INT2NUM(status));
-	rb_ary_push(pid_status_ary, pid_status_member);
+        last_status_set(status);
+        pid_status_member = rb_assoc_new(INT2NUM(pid), rb_last_status);
+        if (rb_block_given_p())
+            rb_ary_push(pid_status_ary, rb_yield(pid_status_member));
+        else
+            rb_ary_push(pid_status_ary, pid_status_member);
     }
-    if (RARRAY(pid_status_ary)->len != 0)
-	last_status_set(status);
 #else
     pid_status_ary = rb_ary_new();
     for (pid = -1;;) {
@@ -456,10 +458,12 @@ proc_waitall()
 		break;
 	    rb_sys_fail(0);
 	}
-	pid_status_member = rb_ary_new2(2);
-	rb_ary_push(pid_status_member, INT2NUM(pid));
-	rb_ary_push(pid_status_member, INT2NUM(status));
-	rb_ary_push(pid_status_ary, pid_status_member);
+        last_status_set(status);
+        pid_status_member = rb_assoc_new(INT2NUM(pid), rb_last_status);
+        if (rb_block_given_p())
+            rb_ary_push(pid_status_ary, rb_yield(pid_status_member));
+        else
+            rb_ary_push(pid_status_ary, pid_status_member);
     }
 #endif
     return pid_status_ary;

--
新井康司 (Koji Arai)