From 45c8de9387cd73a7369c21fcec70ca77e6832076 Mon Sep 17 00:00:00 2001
From: Dave Davenport <qball@gmpclient.org>
Date: Thu, 12 Nov 2015 17:20:51 +0100
Subject: [PATCH] If threads is set to 0, try to autodetect number of threads.

---
 configure.ac      |  1 +
 include/textbox.h | 16 ++++++++--------
 source/helper.c   |  7 +++++++
 3 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/configure.ac b/configure.ac
index 36dafb94..b9ca532d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -38,6 +38,7 @@ AS_IF([test "x$enable_i3support" != xno && test "x$enable_windowmode" != "xno"],
 ##
 
 AC_CHECK_FUNC([getdelim],, AC_MSG_ERROR("Could not find getdelim in c library"))
+AC_CHECK_FUNC([sysconf],,  AC_MSG_ERROR("Could not find sysconf"))
 ##
 # Check dependencies
 ##
diff --git a/include/textbox.h b/include/textbox.h
index fb03234e..9b0c4090 100644
--- a/include/textbox.h
+++ b/include/textbox.h
@@ -33,14 +33,14 @@ typedef struct
 
 typedef enum
 {
-    TB_AUTOHEIGHT    = 1 << 0,
-        TB_AUTOWIDTH = 1 << 1,
-        TB_LEFT      = 1 << 16,
-        TB_RIGHT     = 1 << 17,
-        TB_CENTER    = 1 << 18,
-        TB_EDITABLE  = 1 << 19,
-        TB_MARKUP    = 1 << 20,
-        TB_WRAP      = 1 << 21,
+    TB_AUTOHEIGHT = 1 << 0,
+    TB_AUTOWIDTH  = 1 << 1,
+    TB_LEFT       = 1 << 16,
+    TB_RIGHT      = 1 << 17,
+    TB_CENTER     = 1 << 18,
+    TB_EDITABLE   = 1 << 19,
+    TB_MARKUP     = 1 << 20,
+    TB_WRAP       = 1 << 21,
 } TextboxFlags;
 
 typedef enum
diff --git a/source/helper.c b/source/helper.c
index 0d0070cc..1653bd25 100644
--- a/source/helper.c
+++ b/source/helper.c
@@ -513,6 +513,13 @@ void remove_pid_file ( int fd )
  */
 void config_sanity_check ( Display *display )
 {
+    if ( config.threads == 0 ) {
+        config.threads = 1;
+        long procs = sysconf ( _SC_NPROCESSORS_CONF );
+        if ( procs > 0 ) {
+            config.threads = MIN(procs,UINT_MAX);
+        }
+    }
     // If alternative row is not set, copy the normal background color.
     // Do this at the beginning as we might use it in the error dialog.
     if ( config.menu_bg_alt == NULL ) {