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Telegram/ThirdParty/dispatch/tests/dispatch_vnode.c

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+/*
+ * Copyright (c) 2010-2011 Apple Inc. All rights reserved.
+ *
+ * @APPLE_APACHE_LICENSE_HEADER_START@
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * @APPLE_APACHE_LICENSE_HEADER_END@
+ */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
+#include <unistd.h>
+#endif
+
+#include <dispatch/dispatch.h>
+
+#include <bsdtests.h>
+#include "dispatch_test.h"
+
+#define ITERATIONS 1000
+long iterations, notifications;
+
+int
+main(void)
+{
+	dispatch_test_start("Dispatch VNODE RENAME");
+
+	char path1[] = "/tmp/dispatchtest_vnode.XXXXXX";
+	char path2[] = "/tmp/dispatchtest_vnode.XXXXXX";
+	int fd1 = mkstemp(path1);
+	if (fd1 == -1) {
+		test_errno("mkstemp", errno, 0);
+		test_stop();
+	}
+	close(fd1);
+	if (!mktemp(path2)) {
+		test_errno("mktemp", errno, 0);
+		test_stop();
+	}
+	char *currentName = path1;
+	char *renameDest = path2;
+	dispatch_semaphore_t renamedSemaphore = dispatch_semaphore_create(0);
+	dispatch_group_t g = dispatch_group_create();
+
+	while (iterations++ < ITERATIONS) {
+		int fd = open(currentName, O_EVTONLY);
+		if (fd == -1) {
+			test_errno("open", errno, 0);
+			test_stop();
+		}
+
+		dispatch_source_t monitorSource = dispatch_source_create(
+				DISPATCH_SOURCE_TYPE_VNODE, fd, DISPATCH_VNODE_RENAME,
+				dispatch_get_global_queue(0, 0));
+		dispatch_source_set_event_handler(monitorSource, ^{
+			dispatch_semaphore_signal(renamedSemaphore);
+		});
+		dispatch_source_set_cancel_handler(monitorSource, ^{
+			close(fd);
+		});
+#if DISPATCH_API_VERSION >= 20100818 // <rdar://problem/7731284>
+		dispatch_group_enter(g);
+		dispatch_source_set_registration_handler(monitorSource, ^{
+			dispatch_group_leave(g);
+		});
+#endif
+		dispatch_resume(monitorSource);
+		dispatch_group_wait(g, DISPATCH_TIME_FOREVER);
+
+		if(rename(currentName, renameDest)) {
+			test_errno("rename", errno, 0);
+			test_stop();
+		}
+		char *tmp = currentName;
+		currentName = renameDest;
+		renameDest = tmp;
+
+		if(!dispatch_semaphore_wait(renamedSemaphore,
+				dispatch_time(DISPATCH_TIME_NOW, 10 * 1000 * NSEC_PER_USEC))) {
+			fprintf(stderr, ".");
+			notifications++;
+			dispatch_source_cancel(monitorSource);
+		} else {
+			fprintf(stderr, "!");
+			dispatch_source_cancel(monitorSource);
+			dispatch_semaphore_signal(renamedSemaphore);
+		}
+		if (!(iterations % 80)) {
+			fprintf(stderr, "\n");
+		}
+		dispatch_release(monitorSource);
+	}
+	fprintf(stderr, "\n");
+	unlink(currentName);
+	dispatch_release(g);
+	dispatch_release(renamedSemaphore);
+	test_long("VNODE RENAME notifications", notifications, ITERATIONS);
+	test_stop();
+	return 0;
+}