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-rw-r--r--poll/os2/poll.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/poll/os2/poll.c b/poll/os2/poll.c
new file mode 100644
index 0000000..3c36e5e
--- /dev/null
+++ b/poll/os2/poll.c
@@ -0,0 +1,105 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.h"
+#include "apr_poll.h"
+#include "apr_arch_networkio.h"
+
+APR_DECLARE(apr_status_t) apr_poll(apr_pollfd_t *aprset, apr_int32_t num,
+ apr_int32_t *nsds, apr_interval_time_t timeout)
+{
+ int *pollset;
+ int i;
+ int num_read = 0, num_write = 0, num_except = 0, num_total;
+ int pos_read, pos_write, pos_except;
+
+ for (i = 0; i < num; i++) {
+ if (aprset[i].desc_type == APR_POLL_SOCKET) {
+ num_read += (aprset[i].reqevents & APR_POLLIN) != 0;
+ num_write += (aprset[i].reqevents & APR_POLLOUT) != 0;
+ num_except += (aprset[i].reqevents & APR_POLLPRI) != 0;
+ }
+ }
+
+ num_total = num_read + num_write + num_except;
+ pollset = alloca(sizeof(int) * num_total);
+ memset(pollset, 0, sizeof(int) * num_total);
+
+ pos_read = 0;
+ pos_write = num_read;
+ pos_except = pos_write + num_write;
+
+ for (i = 0; i < num; i++) {
+ if (aprset[i].desc_type == APR_POLL_SOCKET) {
+ if (aprset[i].reqevents & APR_POLLIN) {
+ pollset[pos_read++] = aprset[i].desc.s->socketdes;
+ }
+
+ if (aprset[i].reqevents & APR_POLLOUT) {
+ pollset[pos_write++] = aprset[i].desc.s->socketdes;
+ }
+
+ if (aprset[i].reqevents & APR_POLLPRI) {
+ pollset[pos_except++] = aprset[i].desc.s->socketdes;
+ }
+
+ aprset[i].rtnevents = 0;
+ }
+ }
+
+ if (timeout > 0) {
+ timeout /= 1000; /* convert microseconds to milliseconds */
+ }
+
+ i = select(pollset, num_read, num_write, num_except, timeout);
+ (*nsds) = i;
+
+ if ((*nsds) < 0) {
+ return APR_FROM_OS_ERROR(sock_errno());
+ }
+
+ if ((*nsds) == 0) {
+ return APR_TIMEUP;
+ }
+
+ pos_read = 0;
+ pos_write = num_read;
+ pos_except = pos_write + num_write;
+
+ for (i = 0; i < num; i++) {
+ if (aprset[i].desc_type == APR_POLL_SOCKET) {
+ if (aprset[i].reqevents & APR_POLLIN) {
+ if (pollset[pos_read++] > 0) {
+ aprset[i].rtnevents |= APR_POLLIN;
+ }
+ }
+
+ if (aprset[i].reqevents & APR_POLLOUT) {
+ if (pollset[pos_write++] > 0) {
+ aprset[i].rtnevents |= APR_POLLOUT;
+ }
+ }
+
+ if (aprset[i].reqevents & APR_POLLPRI) {
+ if (pollset[pos_except++] > 0) {
+ aprset[i].rtnevents |= APR_POLLPRI;
+ }
+ }
+ }
+ }
+
+ return APR_SUCCESS;
+}