Test for backlog exhaustion added

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

3 files changed, 143 insertions, 1 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 4e08ae7..71442a2 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -25,7 +25,8 @@ noinst_PROGRAMS = pair_inproc \
                   libzmq21 \
                   resubscribe \
                   survey \
-                  shutdown
+                  shutdown \
+                  backlog
 
 pair_inproc_SOURCES = pair_inproc.cpp testutil.hpp
 pair_tcp_SOURCES = pair_tcp.cpp testutil.hpp
@@ -50,5 +51,6 @@ libzmq21_SOURCES = libzmq21.cpp
 resubscribe_SOURCES = resubscribe.cpp
 survey_SOURCES = survey.cpp
 shutdown_SOURCES = shutdown.cpp
+backlog_SOURCES = backlog.cpp
 
 TESTS = $(noinst_PROGRAMS)
diff --git a/tests/backlog.cpp b/tests/backlog.cpp
new file mode 100644
index 0000000..7ae9ed8
--- /dev/null
+++ b/tests/backlog.cpp
@@ -0,0 +1,134 @@
+/*
+    Copyright (c) 2012 250bpm s.r.o.
+    Copyright (c) 2012 Other contributors as noted in the AUTHORS file
+
+    This file is part of Crossroads I/O project.
+
+    Crossroads I/O is free software; you can redistribute it and/or modify it
+    under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    Crossroads is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "testutil.hpp"
+
+#define BACKLOG 10
+#define PARALLEL_CONNECTS 50
+
+extern "C"
+{
+
+#if !defined XS_HAVE_WINDOWS && !defined XS_HAVE_OPENVMS
+    static void ipc_worker (void *ctx_)
+    {
+        int rc;
+        void *push;
+
+        push = xs_socket (ctx_, XS_PUSH);
+        assert (push);
+        rc = xs_connect (push, "ipc:///tmp/test-backlog");
+        assert (rc >= 0);
+        rc = xs_send (push, NULL, 0, 0);
+        assert (rc == 0);
+        rc = xs_close (push);
+        assert (rc == 0);
+    }
+#endif
+
+    static void tcp_worker (void *ctx_)
+    {
+        int rc;
+        void *push;
+
+        push = xs_socket (ctx_, XS_PUSH);
+        assert (push);
+        rc = xs_connect (push, "tcp://127.0.0.1:5560");
+        assert (rc >= 0);
+        rc = xs_send (push, NULL, 0, 0);
+        assert (rc == 0);
+        rc = xs_close (push);
+        assert (rc == 0);
+    }
+}
+
+int XS_TEST_MAIN ()
+{
+    fprintf (stderr, "backlog test running...\n");
+
+    int rc;
+    void *ctx;
+    void *pull;
+    int i;
+    int backlog;
+    void *threads [PARALLEL_CONNECTS];
+
+    //  Test the exhaustion on IPC backlog.
+#if !defined XS_HAVE_WINDOWS && !defined XS_HAVE_OPENVMS
+    ctx = xs_init ();
+    assert (ctx);
+
+    pull = xs_socket (ctx, XS_PULL);
+    assert (pull);
+    backlog = BACKLOG;
+    rc = xs_setsockopt (pull, XS_BACKLOG, &backlog, sizeof (backlog));
+    assert (rc == 0);
+    rc = xs_bind (pull, "ipc:///tmp/test-backlog");
+    assert (rc >= 0);
+
+    
+    for (i = 0; i < PARALLEL_CONNECTS; i++)
+        threads [i] = thread_create (ipc_worker, ctx);
+
+    for (i = 0; i < PARALLEL_CONNECTS; i++) {
+        rc = xs_recv (pull, NULL, 0, 0);
+        assert (rc == 0);
+    }
+    
+    rc = xs_close (pull);
+    assert (rc == 0);
+    rc = xs_term (ctx);
+    assert (rc == 0);
+
+    for (i = 0; i < PARALLEL_CONNECTS; i++)
+        thread_join (threads [i]);
+#endif
+
+    //  Test the exhaustion on TCP backlog.
+
+    ctx = xs_init ();
+    assert (ctx);
+
+    pull = xs_socket (ctx, XS_PULL);
+    assert (pull);
+    backlog = BACKLOG;
+    rc = xs_setsockopt (pull, XS_BACKLOG, &backlog, sizeof (backlog));
+    assert (rc == 0);
+    rc = xs_bind (pull, "tcp://127.0.0.1:5560");
+    assert (rc >= 0);
+
+    for (i = 0; i < PARALLEL_CONNECTS; i++)
+        threads [i] = thread_create (tcp_worker, ctx);
+
+    for (i = 0; i < PARALLEL_CONNECTS; i++) {
+        rc = xs_recv (pull, NULL, 0, 0);
+        assert (rc == 0);
+    }
+    
+    rc = xs_close (pull);
+    assert (rc == 0);
+    rc = xs_term (ctx);
+    assert (rc == 0);
+
+    for (i = 0; i < PARALLEL_CONNECTS; i++)
+        thread_join (threads [i]);
+
+    return 0;
+}
diff --git a/tests/tests.cpp b/tests/tests.cpp
index 6474300..4071056 100644
--- a/tests/tests.cpp
+++ b/tests/tests.cpp
@@ -119,6 +119,10 @@
 #include "shutdown.cpp"
 #undef XS_TEST_MAIN
 
+#define XS_TEST_MAIN backlog
+#include "backlog.cpp"
+#undef XS_TEST_MAIN
+
 int main ()
 {
     int rc;
@@ -167,6 +171,8 @@ int main ()
     assert (rc == 0);
     rc = shutdown ();
     assert (rc == 0);
+    rc = backlog ();
+    assert (rc == 0);
     fprintf (stderr, "SUCCESS\n");
     sleep (1);