From bc7cd435fc98bb3af93b6dc09a2c1f5e3b0423d9 Mon Sep 17 00:00:00 2001
From: Masami Hiramatsu <mhiramat@redhat.com>
Date: Wed, 16 Sep 2009 16:08:25 -0400
Subject: Signal-based file switching support for relay/ring buffer.

* runtime/staprun/relay.c (switch_outfile): New function for file switching.
  (reader_thread): Don't assign empty_handler to SIGUSR2, and switch output
  file when receiving signal(SIGUSR2) on ppoll.
  (switchfile_handler): Send SIGUSR2 signal to reader threads for file
  switching.
  (init_relayfs): Assign switchfile_handler to SIGUSR2.
* staprun.1.in: Add FILE SWITCHING BY SIGNAL section.
---
 NEWS | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'NEWS')

diff --git a/NEWS b/NEWS
index b31eaaf7..4fbf59e8 100644
--- a/NEWS
+++ b/NEWS
@@ -44,6 +44,9 @@
        SYSTEMTAP_RUNTIME, SYSTEMTAP_TAPSET, SYSTEMTAP_DEBUGINFO_PATH
   - nss and nss-tools are required to use this feature.
 
+- Support output file switching by SIGUSR2. Users can command running
+  stapio to switch output file by sending SIGUSR2.
+
 - Memory consumption for scripts involving many uprobes has been
   dramatically reduced.
 
-- 
cgit