Added support for Solaris 10 Event Completion Framework as

a backend to APR Pollset.

Best Docs: http://developers.sun.com/solaris/articles/event_completion.html

I have only been able to test this on Solaris 10 on x86 with gcc.
If anyone could test on Sparc with other compilers that would be great.


git-svn-id: http://svn.apache.org/repos/asf/apr/apr/trunk@106156 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 336 insertions, 0 deletions

diff --git a/poll/unix/port.c b/poll/unix/port.c
new file mode 100644
index 000000000..4ab6386e6
--- /dev/null
+++ b/poll/unix/port.c
@@ -0,0 +1,336 @@
+/* Copyright 2000-2004 The Apache Software Foundation
+ *
+ * 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.
+ */
+
+#include "apr_arch_poll_private.h"
+
+#ifdef POLLSET_USES_PORT
+
+static apr_int16_t get_event(apr_int16_t event)
+{
+    apr_int16_t rv = 0;
+
+    if (event & APR_POLLIN)
+        rv |= POLLIN;
+    if (event & APR_POLLPRI)
+        rv |= POLLPRI;
+    if (event & APR_POLLOUT)
+        rv |= POLLOUT;
+    if (event & APR_POLLERR)
+        rv |= POLLERR;
+    if (event & APR_POLLHUP)
+        rv |= POLLHUP;
+    if (event & APR_POLLNVAL)
+        rv |= POLLNVAL;
+
+    return rv;
+}
+
+static apr_int16_t get_revent(apr_int16_t event)
+{
+    apr_int16_t rv = 0;
+
+    if (event & POLLIN)
+        rv |= APR_POLLIN;
+    if (event & POLLPRI)
+        rv |= APR_POLLPRI;
+    if (event & POLLOUT)
+        rv |= APR_POLLOUT;
+    if (event & POLLERR)
+        rv |= APR_POLLERR;
+    if (event & POLLHUP)
+        rv |= APR_POLLHUP;
+    if (event & POLLNVAL)
+        rv |= APR_POLLNVAL;
+
+    return rv;
+}
+
+
+struct apr_pollset_t
+{
+    apr_pool_t *pool;
+    apr_uint32_t nelts;
+    apr_uint32_t nalloc;
+    int port_fd;
+    port_event_t *port_set;
+    apr_pollfd_t *result_set;
+    apr_uint32_t flags;
+#if APR_HAS_THREADS
+    /* A thread mutex to protect operations on the rings */
+    apr_thread_mutex_t *ring_lock;
+#endif
+    /* A ring containing all of the pollfd_t that are active */
+    APR_RING_HEAD(pfd_query_ring_t, pfd_elem_t) query_ring;
+    APR_RING_HEAD(pfd_add_ring_t, pfd_elem_t) add_ring;
+    /* A ring of pollfd_t that have been used, and then _remove'd */
+    APR_RING_HEAD(pfd_free_ring_t, pfd_elem_t) free_ring;
+    /* A ring of pollfd_t where rings that have been _remove'd but
+       might still be inside a _poll */
+    APR_RING_HEAD(pfd_dead_ring_t, pfd_elem_t) dead_ring;
+};
+
+static apr_status_t backend_cleanup(void *p_)
+{
+    apr_pollset_t *pollset = (apr_pollset_t *) p_;
+    close(pollset->port_fd);
+    return APR_SUCCESS;
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_create(apr_pollset_t **pollset,
+                                             apr_uint32_t size,
+                                             apr_pool_t *p,
+                                             apr_uint32_t flags)
+{
+    apr_status_t rv = APR_SUCCESS;
+    *pollset = apr_palloc(p, sizeof(**pollset));
+#if APR_HAS_THREADS
+    if (flags & APR_POLLSET_THREADSAFE &&
+        ((rv = apr_thread_mutex_create(&(*pollset)->ring_lock,
+                                       APR_THREAD_MUTEX_DEFAULT,
+                                       p) != APR_SUCCESS))) {
+        *pollset = NULL;
+        return rv;
+    }
+#else
+    if (flags & APR_POLLSET_THREADSAFE) {
+        *pollset = NULL;
+        return APR_ENOTIMPL;
+    }
+#endif
+    (*pollset)->nelts = 0;
+    (*pollset)->nalloc = size;
+    (*pollset)->flags = flags;
+    (*pollset)->pool = p;
+
+    (*pollset)->port_set = apr_palloc(p, size * sizeof(port_event_t));
+
+    (*pollset)->port_fd = port_create();
+
+    if ((*pollset)->port_fd < 0) {
+        return APR_ENOMEM;
+    }
+
+    apr_pool_cleanup_register(p, (void *) (*pollset), backend_cleanup,
+                              apr_pool_cleanup_null);
+
+    (*pollset)->result_set = apr_palloc(p, size * sizeof(apr_pollfd_t));
+
+    APR_RING_INIT(&(*pollset)->query_ring, pfd_elem_t, link);
+    APR_RING_INIT(&(*pollset)->add_ring, pfd_elem_t, link);
+    APR_RING_INIT(&(*pollset)->free_ring, pfd_elem_t, link);
+    APR_RING_INIT(&(*pollset)->dead_ring, pfd_elem_t, link);
+
+    return rv;
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_destroy(apr_pollset_t *pollset)
+{
+    return apr_pool_cleanup_run(pollset->pool, pollset, backend_cleanup);
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_add(apr_pollset_t *pollset,
+                                          const apr_pollfd_t *descriptor)
+{
+    apr_os_sock_t fd;
+    pfd_elem_t *elem;
+    int res;
+    apr_status_t rv = APR_SUCCESS;
+
+    pollset_lock_rings();
+
+    if (!APR_RING_EMPTY(&(pollset->free_ring), pfd_elem_t, link)) {
+        elem = APR_RING_FIRST(&(pollset->free_ring));
+        APR_RING_REMOVE(elem, link);
+    }
+    else {
+        elem = (pfd_elem_t *) apr_palloc(pollset->pool, sizeof(pfd_elem_t));
+        APR_RING_ELEM_INIT(elem, link);
+    }
+    elem->pfd = *descriptor;
+
+    if (descriptor->desc_type == APR_POLL_SOCKET) {
+        fd = descriptor->desc.s->socketdes;
+    }
+    else {
+        fd = descriptor->desc.f->filedes;
+    }
+
+    res = port_associate(pollset->port_fd, PORT_SOURCE_FD, fd, 
+                         get_event(descriptor->reqevents), (void *)elem);
+
+    if (res < 0) {
+        rv = APR_ENOMEM;
+        APR_RING_INSERT_TAIL(&(pollset->free_ring), elem, pfd_elem_t, link);
+    }
+    else {
+        pollset->nelts++;
+        APR_RING_INSERT_TAIL(&(pollset->query_ring), elem, pfd_elem_t, link);
+    }
+
+    pollset_unlock_rings();
+
+    return rv;
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_remove(apr_pollset_t *pollset,
+                                             const apr_pollfd_t *descriptor)
+{
+    apr_os_sock_t fd;
+    pfd_elem_t *ep;
+    apr_status_t rv = APR_SUCCESS;
+    int res;
+
+    pollset_lock_rings();
+
+    if (descriptor->desc_type == APR_POLL_SOCKET) {
+        fd = descriptor->desc.s->socketdes;
+    }
+    else {
+        fd = descriptor->desc.f->filedes;
+    }
+
+    res = port_dissociate(pollset->port_fd, PORT_SOURCE_FD, fd);
+
+    if(res < 0) {
+        rv = APR_NOTFOUND;
+    }
+
+    if (!APR_RING_EMPTY(&(pollset->query_ring), pfd_elem_t, link)) {
+        for (ep = APR_RING_FIRST(&(pollset->query_ring));
+             ep != APR_RING_SENTINEL(&(pollset->query_ring),
+                                     pfd_elem_t, link);
+             ep = APR_RING_NEXT(ep, link)) {
+
+            if (descriptor->desc.s == ep->pfd.desc.s) {
+                APR_RING_REMOVE(ep, link);
+                APR_RING_INSERT_TAIL(&(pollset->dead_ring),
+                                     ep, pfd_elem_t, link);
+                break;
+            }
+        }
+    }
+
+    if (!APR_RING_EMPTY(&(pollset->add_ring), pfd_elem_t, link)) {
+        for (ep = APR_RING_FIRST(&(pollset->add_ring));
+             ep != APR_RING_SENTINEL(&(pollset->add_ring),
+                                     pfd_elem_t, link);
+             ep = APR_RING_NEXT(ep, link)) {
+
+            if (descriptor->desc.s == ep->pfd.desc.s) {
+                APR_RING_REMOVE(ep, link);
+                APR_RING_INSERT_TAIL(&(pollset->dead_ring),
+                                     ep, pfd_elem_t, link);
+                break;
+            }
+        }
+    }
+
+    pollset_unlock_rings();
+
+    return rv;
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_poll(apr_pollset_t *pollset,
+                                           apr_interval_time_t timeout,
+                                           apr_int32_t *num,
+                                           const apr_pollfd_t **descriptors)
+{
+    apr_os_sock_t fd;
+    int ret, i, nget;
+    pfd_elem_t *ep;
+    struct timespec tv, *tvptr;
+    apr_status_t rv = APR_SUCCESS;
+
+    if (timeout < 0) {
+        tvptr = NULL;
+    }
+    else {
+        tv.tv_sec = (long) apr_time_sec(timeout);
+        tv.tv_nsec = (long) apr_time_msec(timeout);
+        tvptr = &tv;
+    }
+
+    nget = 1;
+
+    pollset_lock_rings();
+
+    while (!APR_RING_EMPTY(&(pollset->add_ring), pfd_elem_t, link)) {
+        ep = APR_RING_FIRST(&(pollset->add_ring));
+        APR_RING_REMOVE(ep, link);
+
+        if (ep->pfd.desc_type == APR_POLL_SOCKET) {
+            fd = ep->pfd.desc.s->socketdes;
+        }
+        else {
+            fd = ep->pfd.desc.f->filedes;
+        }
+
+        port_associate(pollset->port_fd, PORT_SOURCE_FD, 
+                           fd, get_event(ep->pfd.reqevents), ep);
+
+    }
+
+    pollset_unlock_rings();
+
+    ret = port_getn(pollset->port_fd, pollset->port_set,  pollset->nalloc, &nget, tvptr);
+
+    (*num) = nget;
+
+    if (ret == -1) {
+        (*num) = 0;
+        if(errno == ETIME || errno == EINTR) {
+            rv = APR_TIMEUP;
+        }
+        else {
+            rv = APR_EGENERAL;
+        }
+    }
+    else if (nget == 0) {
+        rv = APR_TIMEUP;
+    }
+    else {
+
+        for (i = 0; i < nget; i++) {
+            pollset->result_set[i] =
+                (((pfd_elem_t*)(pollset->port_set[i].portev_user))->pfd);
+            pollset->result_set[i].rtnevents =
+                get_revent(pollset->port_set[i].portev_events);
+
+            APR_RING_INSERT_TAIL(&(pollset->add_ring), 
+                                 ((pfd_elem_t*)(pollset->port_set[i].portev_user)), 
+                                 pfd_elem_t, link);
+        }
+
+        if (descriptors) {
+            *descriptors = pollset->result_set;
+        }
+    }
+
+
+    pollset_lock_rings();
+
+    /* Shift all PFDs in the Dead Ring to be Free Ring */
+    while (!APR_RING_EMPTY(&(pollset->dead_ring), pfd_elem_t, link)) {
+        ep = APR_RING_FIRST(&(pollset->dead_ring));
+        APR_RING_REMOVE(ep, link);
+        APR_RING_INSERT_TAIL(&(pollset->free_ring), ep, pfd_elem_t, link);
+    }
+
+    pollset_unlock_rings();
+
+    return rv;
+}
+
+#endif /* POLLSET_USES_PORT */