1 files changed, 186 insertions, 0 deletions
diff --git a/web/server/h2o/libh2o/lib/common/socket/evloop/kqueue.c.h b/web/server/h2o/libh2o/lib/common/socket/evloop/kqueue.c.h
new file mode 100644
index 00000000..21288ed7
--- /dev/null
+++ b/web/server/h2o/libh2o/lib/common/socket/evloop/kqueue.c.h
@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 2014 DeNA Co., Ltd.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+#include <assert.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/time.h>
+
+#if 0
+#define DEBUG_LOG(...) fprintf(stderr, __VA_ARGS__)
+#else
+#define DEBUG_LOG(...)
+#endif
+
+struct st_h2o_socket_loop_kqueue_t {
+    h2o_evloop_t super;
+    int kq;
+};
+
+static void ev_set(struct kevent *ev, int fd, int filter, int flags, struct st_h2o_evloop_socket_t *sock)
+{
+#ifdef __NetBSD__
+    EV_SET(ev, fd, filter, flags, 0, 0, (intptr_t)sock);
+#else
+    EV_SET(ev, fd, filter, flags, 0, 0, sock);
+#endif
+}
+
+static int collect_status(struct st_h2o_socket_loop_kqueue_t *loop, struct kevent *changelist, int changelist_capacity)
+{
+    int change_index = 0;
+
+#define SET_AND_UPDATE(filter, flags)                                                                                              \
+    do {                                                                                                                           \
+        ev_set(changelist + change_index++, sock->fd, filter, flags, sock);                                                        \
+        if (change_index == changelist_capacity) {                                                                                 \
+            int ret;                                                                                                               \
+            while ((ret = kevent(loop->kq, changelist, change_index, NULL, 0, NULL)) != 0 && errno == EINTR)                       \
+                ;                                                                                                                  \
+            if (ret == -1)                                                                                                         \
+                return -1;                                                                                                         \
+            change_index = 0;                                                                                                      \
+        }                                                                                                                          \
+    } while (0)
+
+    while (loop->super._statechanged.head != NULL) {
+        /* detach the top */
+        struct st_h2o_evloop_socket_t *sock = loop->super._statechanged.head;
+        loop->super._statechanged.head = sock->_next_statechanged;
+        sock->_next_statechanged = sock;
+        /* update the state */
+        if ((sock->_flags & H2O_SOCKET_FLAG_IS_DISPOSED) != 0) {
+            free(sock);
+        } else {
+            if (h2o_socket_is_reading(&sock->super)) {
+                if ((sock->_flags & H2O_SOCKET_FLAG_IS_POLLED_FOR_READ) == 0) {
+                    sock->_flags |= H2O_SOCKET_FLAG_IS_POLLED_FOR_READ;
+                    SET_AND_UPDATE(EVFILT_READ, EV_ADD);
+                }
+            } else {
+                if ((sock->_flags & H2O_SOCKET_FLAG_IS_POLLED_FOR_READ) != 0) {
+                    sock->_flags &= ~H2O_SOCKET_FLAG_IS_POLLED_FOR_READ;
+                    SET_AND_UPDATE(EVFILT_READ, EV_DELETE);
+                }
+            }
+            if (h2o_socket_is_writing(&sock->super)) {
+                if ((sock->_flags & H2O_SOCKET_FLAG_IS_POLLED_FOR_WRITE) == 0) {
+                    sock->_flags |= H2O_SOCKET_FLAG_IS_POLLED_FOR_WRITE;
+                    SET_AND_UPDATE(EVFILT_WRITE, EV_ADD);
+                }
+            } else {
+                if ((sock->_flags & H2O_SOCKET_FLAG_IS_POLLED_FOR_WRITE) != 0) {
+                    sock->_flags &= ~H2O_SOCKET_FLAG_IS_POLLED_FOR_WRITE;
+                    SET_AND_UPDATE(EVFILT_WRITE, EV_DELETE);
+                }
+            }
+        }
+    }
+    loop->super._statechanged.tail_ref = &loop->super._statechanged.head;
+
+    return change_index;
+
+#undef SET_AND_UPDATE
+}
+
+int evloop_do_proceed(h2o_evloop_t *_loop, int32_t max_wait)
+{
+    struct st_h2o_socket_loop_kqueue_t *loop = (struct st_h2o_socket_loop_kqueue_t *)_loop;
+    struct kevent changelist[64], events[128];
+    int nchanges, nevents, i;
+    struct timespec ts;
+
+    /* collect (and update) status */
+    if ((nchanges = collect_status(loop, changelist, sizeof(changelist) / sizeof(changelist[0]))) == -1)
+        return -1;
+
+    /* poll */
+    max_wait = adjust_max_wait(&loop->super, max_wait);
+    ts.tv_sec = max_wait / 1000;
+    ts.tv_nsec = max_wait % 1000 * 1000 * 1000;
+    nevents = kevent(loop->kq, changelist, nchanges, events, sizeof(events) / sizeof(events[0]), &ts);
+
+    update_now(&loop->super);
+    if (nevents == -1)
+        return -1;
+
+    if (nevents != 0)
+        h2o_sliding_counter_start(&loop->super.exec_time_counter, loop->super._now);
+
+    /* update readable flags, perform writes */
+    for (i = 0; i != nevents; ++i) {
+        struct st_h2o_evloop_socket_t *sock = (void *)events[i].udata;
+        assert(sock->fd == events[i].ident);
+        switch (events[i].filter) {
+        case EVFILT_READ:
+            if (sock->_flags != H2O_SOCKET_FLAG_IS_DISPOSED) {
+                sock->_flags |= H2O_SOCKET_FLAG_IS_READ_READY;
+                link_to_pending(sock);
+            }
+            break;
+        case EVFILT_WRITE:
+            if (sock->_flags != H2O_SOCKET_FLAG_IS_DISPOSED) {
+                write_pending(sock);
+            }
+            break;
+        default:
+            break; /* ??? */
+        }
+    }
+
+    return 0;
+}
+
+static void evloop_do_on_socket_create(struct st_h2o_evloop_socket_t *sock)
+{
+}
+
+static void evloop_do_on_socket_close(struct st_h2o_evloop_socket_t *sock)
+{
+}
+
+static void evloop_do_on_socket_export(struct st_h2o_evloop_socket_t *sock)
+{
+    struct st_h2o_socket_loop_kqueue_t *loop = (void *)sock->loop;
+    struct kevent changelist[2];
+    int change_index = 0, ret;
+
+    if ((sock->_flags & H2O_SOCKET_FLAG_IS_POLLED_FOR_READ) != 0)
+        ev_set(changelist + change_index++, sock->fd, EVFILT_READ, EV_DELETE, 0);
+    if ((sock->_flags & H2O_SOCKET_FLAG_IS_POLLED_FOR_WRITE) != 0)
+        ev_set(changelist + change_index++, sock->fd, EVFILT_WRITE, EV_DELETE, 0);
+    if (change_index == 0)
+        return;
+    while ((ret = kevent(loop->kq, changelist, change_index, NULL, 0, NULL)) != 0 && errno == EINTR)
+        ;
+    if (ret == -1)
+        fprintf(stderr, "kevent returned error %d (fd=%d)", errno, sock->fd);
+}
+
+h2o_evloop_t *h2o_evloop_create(void)
+{
+    struct st_h2o_socket_loop_kqueue_t *loop = (struct st_h2o_socket_loop_kqueue_t *)create_evloop(sizeof(*loop));
+
+    loop->kq = kqueue();
+
+    return &loop->super;
+}