When a previous call to poll() has already seen the process status,

wait() should not call waitpid() again. Should be backported to 2.2.4.
2003-06-02 19:12:01 +00:00 · 2003-06-02 19:12:01 +00:00 · 3800ef7ae2
parent bf68c78a6f
commit 3800ef7ae2
1 changed files with 5 additions and 4 deletions
--- a/Lib/popen2.py
+++ b/Lib/popen2.py
@ -83,10 +83,11 @@ class Popen3:

    def wait(self):
        """Wait for and return the exit status of the child process."""
-        pid, sts = os.waitpid(self.pid, 0)
-        if pid == self.pid:
-            self.sts = sts
-            _active.remove(self)
+        if self.sts < 0:
+            pid, sts = os.waitpid(self.pid, 0)
+            if pid == self.pid:
+                self.sts = sts
+                _active.remove(self)
        return self.sts