Introducing iomgr.
Move eventmanager and platform dependent endpoint functionality into a single
library called 'iomgr'.
This is primarily to prepare for a Windows port - where posix socket semantics
lead to poor quality code.
Mostly this is a code movement CL, with some small changes to help prepare the
way for porting:
- em style fd objects can only be held internally in iomgr, and own their memory
- added grpc_iomgr_create_endpoint_pair() to accomodate the common pattern of
creating a tcp endpoint from the output of socketpair - this will help keep
our tests portable
- separated em alarm interface into a separate file, as this part of event
manager is needed higher up the stack
- made the eventmanager bits a true singleton, simplifying API's across the
stack as there's no longer a reason to carry a pointer there.
Initial design document is here:
https://docs.google.com/document/d/1VmafcHvvrP5kwtQkz84R5yXF7u7fW-9Pn0bkSUQHDt8/edit?disco=AAAAARNByxg
Change on 2014/12/09 by ctiller <ctiller@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=81716456
diff --git a/test/core/iomgr/tcp_client_posix_test.c b/test/core/iomgr/tcp_client_posix_test.c
new file mode 100644
index 0000000..cb1cd0b
--- /dev/null
+++ b/test/core/iomgr/tcp_client_posix_test.c
@@ -0,0 +1,176 @@
+/*
+ *
+ * Copyright 2014, 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/iomgr/tcp_client.h"
+
+#include <errno.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include "src/core/iomgr/iomgr.h"
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+
+static gpr_timespec test_deadline() {
+ return gpr_time_add(gpr_now(), gpr_time_from_micros(1000000));
+}
+
+static void must_succeed(void *arg, grpc_endpoint *tcp) {
+ GPR_ASSERT(tcp);
+ grpc_endpoint_shutdown(tcp);
+ grpc_endpoint_destroy(tcp);
+ gpr_event_set(arg, (void *)1);
+}
+
+static void must_fail(void *arg, grpc_endpoint *tcp) {
+ GPR_ASSERT(!tcp);
+ gpr_event_set(arg, (void *)1);
+}
+
+void test_succeeds() {
+ struct sockaddr_in addr;
+ socklen_t addr_len = sizeof(addr);
+ int svr_fd;
+ int r;
+ gpr_event ev;
+
+ gpr_event_init(&ev);
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+
+ /* create a dummy server */
+ svr_fd = socket(AF_INET, SOCK_STREAM, 0);
+ GPR_ASSERT(svr_fd >= 0);
+ GPR_ASSERT(0 == bind(svr_fd, (struct sockaddr *)&addr, addr_len));
+ GPR_ASSERT(0 == listen(svr_fd, 1));
+
+ /* connect to it */
+ GPR_ASSERT(getsockname(svr_fd, (struct sockaddr *)&addr, &addr_len) == 0);
+ grpc_tcp_client_connect(must_succeed, &ev, (struct sockaddr *)&addr, addr_len,
+ gpr_inf_future);
+
+ /* await the connection */
+ do {
+ addr_len = sizeof(addr);
+ r = accept(svr_fd, (struct sockaddr *)&addr, &addr_len);
+ } while (r == -1 && errno == EINTR);
+ GPR_ASSERT(r >= 0);
+ close(r);
+
+ /* wait for the connection callback to finish */
+ GPR_ASSERT(gpr_event_wait(&ev, test_deadline()));
+}
+
+void test_fails() {
+ struct sockaddr_in addr;
+ socklen_t addr_len = sizeof(addr);
+ gpr_event ev;
+
+ gpr_event_init(&ev);
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+
+ /* connect to a broken address */
+ grpc_tcp_client_connect(must_fail, &ev, (struct sockaddr *)&addr, addr_len,
+ gpr_inf_future);
+
+ /* wait for the connection callback to finish */
+ GPR_ASSERT(gpr_event_wait(&ev, test_deadline()));
+}
+
+void test_times_out() {
+ struct sockaddr_in addr;
+ socklen_t addr_len = sizeof(addr);
+ int svr_fd;
+#define NUM_CLIENT_CONNECTS 10
+ int client_fd[NUM_CLIENT_CONNECTS];
+ int i;
+ int r;
+ gpr_event ev;
+ gpr_timespec connect_deadline;
+
+ gpr_event_init(&ev);
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+
+ /* create a dummy server */
+ svr_fd = socket(AF_INET, SOCK_STREAM, 0);
+ GPR_ASSERT(svr_fd >= 0);
+ GPR_ASSERT(0 == bind(svr_fd, (struct sockaddr *)&addr, addr_len));
+ GPR_ASSERT(0 == listen(svr_fd, 1));
+ /* Get its address */
+ GPR_ASSERT(getsockname(svr_fd, (struct sockaddr *)&addr, &addr_len) == 0);
+
+ /* tie up the listen buffer, which is somewhat arbitrarily sized. */
+ for (i = 0; i < NUM_CLIENT_CONNECTS; ++i) {
+ client_fd[i] = socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, 0);
+ do {
+ r = connect(client_fd[i], (struct sockaddr *)&addr, addr_len);
+ } while (r == -1 && errno == EINTR);
+ GPR_ASSERT(r < 0);
+ GPR_ASSERT(errno == EWOULDBLOCK || errno == EINPROGRESS);
+ }
+
+ /* connect to dummy server address */
+
+ connect_deadline = gpr_time_add(gpr_now(), gpr_time_from_micros(1000000));
+
+ grpc_tcp_client_connect(must_fail, &ev, (struct sockaddr *)&addr, addr_len,
+ connect_deadline);
+ /* Make sure the event doesn't trigger early */
+ GPR_ASSERT(!gpr_event_wait(
+ &ev, gpr_time_add(gpr_now(), gpr_time_from_micros(500000))));
+ /* Now wait until it should have triggered */
+ sleep(1);
+
+ /* wait for the connection callback to finish */
+ GPR_ASSERT(gpr_event_wait(&ev, test_deadline()));
+ close(svr_fd);
+ for (i = 0; i < NUM_CLIENT_CONNECTS; ++i) {
+ close(client_fd[i]);
+ }
+}
+
+int main(void) {
+ grpc_iomgr_init();
+ test_succeeds();
+ test_fails();
+ test_times_out();
+ grpc_iomgr_shutdown();
+ return 0;
+}