Add signal.siginterrupt to restart interrupted system calls

joerick · Jun 30, 2014 · fc7fe46 · fc7fe46
1 parent 5245e52
commit fc7fe46
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/pyinstrument/profiler.py b/pyinstrument/profiler.py
@@ -42,6 +42,10 @@ def start(self):
         if self.use_signal:
             try:
                 signal.signal(signal.SIGALRM, self._signal)
+                # the following tells the system to restart interrupted system calls if they are
+                # interrupted before any data has been transferred. This avoids many of the problems
+                # related to signals interrupting system calls, see issue #16
+                signal.siginterrupt(signal.SIGALRM, False)
             except ValueError:
                 raise NotMainThreadError()