1 files changed, 119 insertions, 0 deletions
diff --git a/test/core/util/port.c b/test/core/util/port.c
new file mode 100644
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--- /dev/null
+++ b/test/core/util/port.c
@@ -0,0 +1,119 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/iomgr/port.h"
+#include "test/core/util/test_config.h"
+#if defined(GRPC_TEST_PICK_PORT)
+
+#include "test/core/util/port.h"
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "test/core/util/port_server_client.h"
+
+static int *chosen_ports = NULL;
+static size_t num_chosen_ports = 0;
+
+static int free_chosen_port(int port) {
+  size_t i;
+  int found = 0;
+  size_t found_at = 0;
+  /* Find the port and erase it from the list, then tell the server it can be
+     freed. */
+  for (i = 0; i < num_chosen_ports; i++) {
+    if (chosen_ports[i] == port) {
+      GPR_ASSERT(found == 0);
+      found = 1;
+      found_at = i;
+    }
+  }
+  if (found) {
+    chosen_ports[found_at] = chosen_ports[num_chosen_ports - 1];
+    num_chosen_ports--;
+    grpc_free_port_using_server(port);
+  }
+  return found;
+}
+
+static void free_chosen_ports(void) {
+  size_t i;
+  for (i = 0; i < num_chosen_ports; i++) {
+    grpc_free_port_using_server(chosen_ports[i]);
+  }
+  gpr_free(chosen_ports);
+}
+
+static void chose_port(int port) {
+  if (chosen_ports == NULL) {
+    atexit(free_chosen_ports);
+  }
+  num_chosen_ports++;
+  chosen_ports = gpr_realloc(chosen_ports, sizeof(int) * num_chosen_ports);
+  chosen_ports[num_chosen_ports - 1] = port;
+}
+
+int grpc_pick_unused_port(void) {
+  int port = grpc_pick_port_using_server();
+  if (port != 0) {
+    chose_port(port);
+  }
+
+  return port;
+}
+
+int grpc_pick_unused_port_or_die(void) {
+  int port = grpc_pick_unused_port();
+  if (port == 0) {
+    fprintf(stderr,
+            "gRPC tests require a helper port server to allocate ports used \n"
+            "during the test.\n\n"
+            "This server is not currently running.\n\n"
+            "To start it, run tools/run_tests/start_port_server.py\n\n");
+    exit(1);
+  }
+  return port;
+}
+
+void grpc_recycle_unused_port(int port) { GPR_ASSERT(free_chosen_port(port)); }
+
+#endif /* GRPC_TEST_PICK_PORT */