From e554635e487e875817c2d702635220b97a6419f6 Mon Sep 17 00:00:00 2001
From: Geoffrey McRae <geoff@hostfission.com>
Date: Sat, 11 Jan 2020 16:03:28 +1100
Subject: [PATCH] [spice] turn on TCP_QUICKACK

https://assets.extrahop.com/whitepapers/TCP-Optimization-Guide-by-ExtraHop.pdf
---
 VERSION                         | 2 +-
 client/spice/CMakeLists.txt     | 1 +
 client/spice/src/spice.c        | 5 +++--
 client/src/main.h               | 1 +
 common/include/common/locking.h | 6 ++++++
 5 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/VERSION b/VERSION
index 94bfc4ae..2de33bcb 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-B1-79-g13f55011c0+1
\ No newline at end of file
+B1-80-g5e915dd1ff+1
\ No newline at end of file
diff --git a/client/spice/CMakeLists.txt b/client/spice/CMakeLists.txt
index ceaf6030..272f5c2a 100644
--- a/client/spice/CMakeLists.txt
+++ b/client/spice/CMakeLists.txt
@@ -1,5 +1,6 @@
 cmake_minimum_required(VERSION 3.0)
 project(spice LANGUAGES C)
+set(CMAKE_C_STANDARD 11)
 
 find_package(PkgConfig)
 pkg_check_modules(SPICE_PKGCONFIG REQUIRED
diff --git a/client/spice/src/spice.c b/client/spice/src/spice.c
index cd253596..998ff336 100644
--- a/client/spice/src/spice.c
+++ b/client/spice/src/spice.c
@@ -733,8 +733,9 @@ bool spice_connect_channel(struct SpiceChannel * channel)
 
   if (spice.family != AF_UNIX)
   {
-    int flag = 1;
-    setsockopt(channel->socket, IPPROTO_TCP, TCP_NODELAY, &flag, sizeof(int));
+    const int flag = 1;
+    setsockopt(channel->socket, IPPROTO_TCP, TCP_NODELAY , &flag, sizeof(int));
+    setsockopt(channel->socket, IPPROTO_TCP, TCP_QUICKACK, &flag, sizeof(int));
   }
 
   if (connect(channel->socket, &spice.addr.addr, addrSize) == -1)
diff --git a/client/src/main.h b/client/src/main.h
index 34037afd..4a2955b9 100644
--- a/client/src/main.h
+++ b/client/src/main.h
@@ -49,6 +49,7 @@ struct AppState
   bool  drawCursor;
   bool  cursorInView;
   bool  updateCursor;
+  bool  initialCursorSync;
   float scaleX, scaleY;
   float accX, accY;
   int   curLastX;
diff --git a/common/include/common/locking.h b/common/include/common/locking.h
index 0f5afebd..3a29667b 100644
--- a/common/include/common/locking.h
+++ b/common/include/common/locking.h
@@ -25,6 +25,12 @@ Place, Suite 330, Boston, MA 02111-1307 USA
 #define INTERLOCKED_GET(x)      __sync_fetch_and_add((x), 0)
 #define INTERLOCKED_CE(x, c, v) __sync_val_compare_and_swap((x), (c), (v))
 
+#define INTERLOCKED_ENTER(lock) \
+  while(__sync_lock_test_and_set(&(lock), 1)) while((lock));
+
+#define INTERLOCKED_EXIT(lock) \
+  __sync_lock_release(&(lock));
+
 #define INTERLOCKED_SECTION(lock, x) \
   while(__sync_lock_test_and_set(&(lock), 1)) while((lock)); \
   x\