From: Josh Gao <jmgao@google.com>
Date: Wed, 26 Oct 2016 20:27:19 +0000 (-0700)
Subject: Reserve a realtime signal for debuggerd.
X-Git-Tag: android-x86-8.1-r1~224^2^2~69^2
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=f8a6d4745daafb6aced5cdeb76325c719ca1374b;p=android-x86%2Fbionic.git

Reserve a realtime signal for debuggerd.

Allocate __SIGRTMIN + 3 for triggering native stack dumps (like SIGQUIT
for Java processes).

Bug: http://b/30705528
Test: debuggerd_test
Change-Id: I81d622fba32a651555268a8a2ba6721c61c93a58
---

diff --git a/libc/bionic/__libc_current_sigrtmin.cpp b/libc/bionic/__libc_current_sigrtmin.cpp
index 16b037d1e..7c9326725 100644
--- a/libc/bionic/__libc_current_sigrtmin.cpp
+++ b/libc/bionic/__libc_current_sigrtmin.cpp
@@ -31,7 +31,8 @@
 // POSIX timers use __SIGRTMIN + 0.
 // libbacktrace uses __SIGRTMIN + 1.
 // libcore uses __SIGRTMIN + 2.
+// __SIGRTMIN + 3 is reserved for triggering native stack dumps.
 
 int __libc_current_sigrtmin(void) {
-  return __SIGRTMIN + 3;
+  return __SIGRTMIN + 4;
 }