commit 3fca567ff438145e28dd1318ad5b1734c1091257
author Mohsin Kazmi <sykazmi@cisco.com> Thu Jan 04 18:57:26 2018 +0100
committer Dave Barach <openvpp@barachs.net> Mon Jan 22 18:17:23 2018 +0000
tree 7101b4ae130f2731e549f82ab98af8bfbabc6571
parent e82488f10f20f464961c5c7b381b4a419bca0bbc

svm: queue sub: Add conditional timed wait

On reviece side svm queue only permits blocking and
non-blocking calls. This patch adds timed wait blocking
functionality which returns either on signal/event or
on given time out.

It also preserves the original behavior, so it will not
hurt client applications which are using svm queue.

Change-Id: Ic10632170330a80afb8bc781d4ccddfe4da2c69a
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>

src/vpp-api/client/client.c

diff --git a/src/vpp-api/client/client.c b/src/vpp-api/client/client.c
index f137223..fd2c417 100644
--- a/src/vpp-api/client/client.c
+++ b/src/vpp-api/client/client.c
@@ -143,7 +143,7 @@
   q = am->vl_input_queue;
 
   while (1)
-    while (!svm_queue_sub(q, (u8 *)&msg, 0))
+    while (!svm_queue_sub(q, (u8 *)&msg, SVM_Q_WAIT, 0))
       {
 	u16 id = ntohs(*((u16 *)msg));
 	switch (id) {
@@ -404,7 +404,8 @@
   q = am->vl_input_queue;
 
  again:
-  rv = svm_queue_sub(q, (u8 *)&msg, 0);
+  rv = svm_queue_sub(q, (u8 *)&msg, SVM_Q_WAIT, 0);
+
   if (rv == 0) {
     u16 msg_id = ntohs(*((u16 *)msg));
     switch (msg_id) {