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;
+}