[Xcb] [PATCH] allow compile-time setting for XCB queue buffer size

[Julien Danjou]

Signed-off-by: Julien Danjou <julien at danjou.info>
---
 configure.ac |   11 +++++++++++
 src/xcbint.h |    4 ++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 062c0cb..e8a98cf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -76,6 +76,16 @@ linux*)
 	;;
 esac
 
+dnl define buffer queue size
+xcb_queue_buffer_size=16384
+AC_DEFINE(XCB_QUEUE_BUFFER_SIZE, $xcb_queue_buffer_size, [XCB buffer queue size])
+AC_ARG_WITH(queue-size,
+            AC_HELP_STRING([--with-queue-size=SIZE],
+              [Set the XCB buffer queue size (default is 16384)]),
+            [AC_DEFINE_UNQUOTED(XCB_QUEUE_BUFFER_SIZE, $withval, [XCB buffer queue size]),
+            xcb_queue_buffer_size=$withval],
+            )
+
 dnl check for the sockaddr_un.sun_len member
 AC_CHECK_MEMBER([struct sockaddr_un.sun_len],
 		[AC_DEFINE(HAVE_SOCKADDR_SUN_LEN,1,[Have the sockaddr_un.sun_len member.])],
@@ -183,6 +193,7 @@ echo ""
 echo "  Configuration"
 echo "    XDM support.........: ${have_xdmcp}"
 echo "    Build unit tests....: ${HAVE_CHECK}"
+echo "    XCB buffer size.....: ${xcb_queue_buffer_size}"
 echo ""
 echo "  Used CFLAGS:"
 echo "    CPPFLAGS............: ${CPPFLAGS}"
diff --git a/src/xcbint.h b/src/xcbint.h
index ab0264f..2bc6d33 100644
--- a/src/xcbint.h
+++ b/src/xcbint.h
@@ -72,7 +72,7 @@ typedef struct _xcb_out {
     pthread_cond_t cond;
     int writing;
 
-    char queue[4096];
+    char queue[XCB_QUEUE_BUFFER_SIZE];
     int queue_len;
 
     unsigned int request;
@@ -99,7 +99,7 @@ typedef struct _xcb_in {
     pthread_cond_t event_cond;
     int reading;
 
-    char queue[4096];
+    char queue[XCB_QUEUE_BUFFER_SIZE];
     int queue_len;
 
     unsigned int request_expected;
-- 
1.6.0.1