Deferred log rotation in workers

Instead of rotating logs immediately when SIGUSR1 is caught,
defer it until the current client is processing is complete.

This allows multi-line log messages generated by apps to not be
broken up if SIGUSR1 is received while the app is running.

If we're sleeping inside IO.select, we close a pipe in the
exceptfds set to cause EBADF to be raised.

This also adds a small reliability improvement to test_exec
so we wait until signals are ready before sending USR1
to rotate logs.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/exec/test_exec.rb b/test/exec/test_exec.rb
index ea9fc7c..53cebf6 100644
--- a/test/exec/test_exec.rb
+++ b/test/exec/test_exec.rb
@@ -502,7 +502,7 @@ end
       lines = []
       while (tries -= 1) > 0
         begin
-          lines = File.readlines(path).grep(/worker=\d+ spawned/)
+          lines = File.readlines(path).grep(/worker=\d+ ready/)
           lines.size == nr_workers and return
         rescue Errno::ENOENT
         end