Divide poll.h to core and public headers

Also some cleanup of other headers.

server/core/maxscale/poll.h

@@ -0,0 +1,67 @@
+#pragma once
+/*
+ * Copyright (c) 2016 MariaDB Corporation Ab
+ *
+ * Use of this software is governed by the Business Source License included
+ * in the LICENSE.TXT file and at www.mariadb.com/bsl.
+ *
+ * Change Date: 2019-07-01
+ *
+ * On the date above, in accordance with the Business Source License, use
+ * of this software will be governed by version 2 or later of the General
+ * Public License.
+ */
+
+/**
+ * @file core/maxscale/poll.h - The private poll interface
+ */
+
+#include <maxscale/poll.h>
+
+#include <maxscale/bitmask.h>
+#include <maxscale/resultset.h>
+
+MXS_BEGIN_DECLS
+
+#define MAX_EVENTS 1000
+
+/**
+ * A statistic identifier that can be returned by poll_get_stat
+ */
+typedef enum
+{
+    POLL_STAT_READ,
+    POLL_STAT_WRITE,
+    POLL_STAT_ERROR,
+    POLL_STAT_HANGUP,
+    POLL_STAT_ACCEPT,
+    POLL_STAT_EVQ_LEN,
+    POLL_STAT_EVQ_MAX,
+    POLL_STAT_MAX_QTIME,
+    POLL_STAT_MAX_EXECTIME
+} POLL_STAT;
+
+enum poll_message
+{
+    POLL_MSG_CLEAN_PERSISTENT = 0x01
+};
+
+void            poll_init();
+void            poll_shutdown();
+
+void            poll_waitevents(void *);
+void            poll_set_maxwait(unsigned int);
+void            poll_set_nonblocking_polls(unsigned int);
+
+void            dprintPollStats(DCB *);
+void            dShowThreads(DCB *dcb);
+void            dShowEventQ(DCB *dcb);
+void            dShowEventStats(DCB *dcb);
+
+GWBITMASK       *poll_bitmask();
+int             poll_get_stat(POLL_STAT stat);
+RESULTSET       *eventTimesGetList();
+
+void            poll_send_message(enum poll_message msg, void *data);
+
+MXS_END_DECLS