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-rw-r--r--tools/regression/kqueue/read.c324
1 files changed, 324 insertions, 0 deletions
diff --git a/tools/regression/kqueue/read.c b/tools/regression/kqueue/read.c
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--- /dev/null
+++ b/tools/regression/kqueue/read.c
@@ -0,0 +1,324 @@
+/*
+ * Copyright (c) 2009 Mark Heily <mark@heily.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * $FreeBSD$
+ */
+
+#include "common.h"
+
+int kqfd;
+int sockfd[2];
+
+static void
+kevent_socket_drain(void)
+{
+ char buf[1];
+
+ /* Drain the read buffer, then make sure there are no more events. */
+ puts("draining the read buffer");
+ if (read(sockfd[0], &buf[0], 1) < 1)
+ err(1, "read(2)");
+}
+
+static void
+kevent_socket_fill(void)
+{
+ puts("filling the read buffer");
+ if (write(sockfd[1], ".", 1) < 1)
+ err(1, "write(2)");
+}
+
+
+void
+test_kevent_socket_add(void)
+{
+ const char *test_id = "kevent(EVFILT_READ, EV_ADD)";
+ struct kevent kev;
+
+ test_begin(test_id);
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+
+ success();
+}
+
+void
+test_kevent_socket_get(void)
+{
+ const char *test_id = "kevent(EVFILT_READ) wait";
+ struct kevent kev;
+
+ test_begin(test_id);
+
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+
+ kevent_socket_fill();
+
+ kev.data = 1;
+ kevent_cmp(&kev, kevent_get(kqfd));
+
+ kevent_socket_drain();
+ test_no_kevents();
+
+ kev.flags = EV_DELETE;
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+
+ success();
+}
+
+void
+test_kevent_socket_clear(void)
+{
+ const char *test_id = "kevent(EVFILT_READ, EV_CLEAR)";
+ struct kevent kev;
+
+ test_begin(test_id);
+
+ test_no_kevents();
+
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD | EV_CLEAR, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+
+ kevent_socket_fill();
+ kevent_socket_fill();
+
+ kev.data = 2;
+ kevent_cmp(&kev, kevent_get(kqfd));
+
+ /* We filled twice, but drain once. Edge-triggered would not generate
+ additional events.
+ */
+ kevent_socket_drain();
+ test_no_kevents();
+
+ kevent_socket_drain();
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DELETE, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+
+ success();
+}
+
+void
+test_kevent_socket_disable_and_enable(void)
+{
+ const char *test_id = "kevent(EVFILT_READ, EV_DISABLE)";
+ struct kevent kev;
+
+ test_begin(test_id);
+
+ /* Add an event, then disable it. */
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DISABLE, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+
+ kevent_socket_fill();
+ test_no_kevents();
+
+ /* Re-enable the knote, then see if an event is generated */
+ kev.flags = EV_ENABLE;
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+ kev.flags = EV_ADD;
+ kev.data = 1;
+ kevent_cmp(&kev, kevent_get(kqfd));
+
+ kevent_socket_drain();
+
+ kev.flags = EV_DELETE;
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+
+ success();
+}
+
+void
+test_kevent_socket_del(void)
+{
+ const char *test_id = "kevent(EVFILT_READ, EV_DELETE)";
+ struct kevent kev;
+
+ test_begin(test_id);
+
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DELETE, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+
+ kevent_socket_fill();
+ test_no_kevents();
+ kevent_socket_drain();
+
+ success();
+}
+
+void
+test_kevent_socket_oneshot(void)
+{
+ const char *test_id = "kevent(EVFILT_READ, EV_ONESHOT)";
+ struct kevent kev;
+
+ test_begin(test_id);
+
+ /* Re-add the watch and make sure no events are pending */
+ puts("-- re-adding knote");
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD | EV_ONESHOT, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+ test_no_kevents();
+
+ puts("-- getting one event");
+ kevent_socket_fill();
+ kev.data = 1;
+ kevent_cmp(&kev, kevent_get(kqfd));
+
+ puts("-- checking knote disabled");
+ test_no_kevents();
+
+ /* Try to delete the knote, it should already be deleted */
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DELETE, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) == 0)
+ err(1, "%s", test_id);
+
+ kevent_socket_drain();
+
+ success();
+}
+
+
+#if HAVE_EV_DISPATCH
+void
+test_kevent_socket_dispatch(void)
+{
+ const char *test_id = "kevent(EVFILT_READ, EV_DISPATCH)";
+
+ test_begin(test_id);
+
+ struct kevent kev;
+
+ /* Re-add the watch and make sure no events are pending */
+ puts("-- re-adding knote");
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD | EV_DISPATCH, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+ test_no_kevents();
+
+ /* The event will occur only once, even though EV_CLEAR is not
+ specified. */
+ kevent_socket_fill();
+ kev.data = 1;
+ kevent_cmp(&kev, kevent_get(kqfd));
+ test_no_kevents();
+
+ /* Since the knote is disabled, the EV_DELETE operation succeeds. */
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DELETE, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+
+ kevent_socket_drain();
+
+ success();
+}
+#endif /* HAVE_EV_DISPATCH */
+
+#if BROKEN
+void
+test_kevent_socket_lowat(void)
+{
+ const char *test_id = "kevent(EVFILT_READ, NOTE_LOWAT)";
+ struct kevent kev;
+
+ test_begin(test_id);
+
+ /* Re-add the watch and make sure no events are pending */
+ puts("-- re-adding knote, setting low watermark to 2 bytes");
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD | EV_ONESHOT, NOTE_LOWAT, 2, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+ test_no_kevents();
+
+ puts("-- checking that one byte does not trigger an event..");
+ kevent_socket_fill();
+ test_no_kevents();
+
+ puts("-- checking that two bytes triggers an event..");
+ kevent_socket_fill();
+ if (kevent(kqfd, NULL, 0, &kev, 1, NULL) != 1)
+ err(1, "%s", test_id);
+ KEV_CMP(kev, sockfd[0], EVFILT_READ, 0);
+ test_no_kevents();
+
+ kevent_socket_drain();
+ kevent_socket_drain();
+
+ success();
+}
+#endif
+
+void
+test_kevent_socket_eof(void)
+{
+ const char *test_id = "kevent(EVFILT_READ, EV_EOF)";
+ struct kevent kev;
+
+ test_begin(test_id);
+
+ /* Re-add the watch and make sure no events are pending */
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+ test_no_kevents();
+
+ if (close(sockfd[1]) < 0)
+ err(1, "close(2)");
+
+ kev.flags |= EV_EOF;
+ kevent_cmp(&kev, kevent_get(kqfd));
+
+ /* Delete the watch */
+ EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DELETE, 0, 0, &sockfd[0]);
+ if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
+ err(1, "%s", test_id);
+
+ success();
+}
+
+void
+test_evfilt_read()
+{
+ /* Create a connected pair of full-duplex sockets for testing socket events */
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, sockfd) < 0)
+ abort();
+
+ kqfd = kqueue();
+ test_kevent_socket_add();
+ test_kevent_socket_del();
+ test_kevent_socket_get();
+ test_kevent_socket_disable_and_enable();
+ test_kevent_socket_oneshot();
+ test_kevent_socket_clear();
+#if HAVE_EV_DISPATCH
+ test_kevent_socket_dispatch();
+#endif
+ test_kevent_socket_eof();
+ close(kqfd);
+}
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