-/*
- * Copyright (c) 1995-2007, Index Data
+/* This file is part of the YAZ toolkit.
+ * Copyright (C) 1995-2008 Index Data.
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-/* $Id: zoom.h,v 1.41 2007-01-03 08:42:14 adam Exp $ */
/**
* \file zoom.h
ZOOM_API(void)
ZOOM_resultset_option_set (ZOOM_resultset r, const char *key, const char *val);
-/* return size of result set (alias hit count AKA result count) */
+/* return size of result set (alias hit count AKA result count) */
ZOOM_API(size_t)
ZOOM_resultset_size (ZOOM_resultset r);
ZOOM_API(const char *)
ZOOM_package_option_get (ZOOM_package p, const char *key);
+ZOOM_API(const char *)
+ ZOOM_package_option_getl (ZOOM_package p, const char *key, int *lenp);
+
ZOOM_API(void)
ZOOM_package_option_set (ZOOM_package p, const char *key,
const char *val);
+ZOOM_API(void)
+ ZOOM_package_option_setl (ZOOM_package p, const char *key,
+ const char *val, int len);
+
/* ----------------------------------------------------------- */
/* Sort. First function is deprecated, use second instead */
ZOOM_API(void)
ZOOM_options_create_with_parent2 (ZOOM_options parent1,
ZOOM_options parent2);
+ZOOM_API(ZOOM_options)
+ ZOOM_options_dup(ZOOM_options src);
+
ZOOM_API(const char *)
ZOOM_options_get (ZOOM_options opt, const char *name);
ZOOM_API(void)
ZOOM_options_set_int(ZOOM_options opt, const char *name, int value);
-/* ----------------------------------------------------------- */
-/* events */
-/* poll for events on a number of connections. Returns positive
- integer if event occurred ; zero if none occurred and no more
- events are pending. The positive integer specifies the
- connection for which the event occurred. */
+/** \brief select/poll socket mask: read */
+#define ZOOM_SELECT_READ 1
+/** \brief select/poll socket mask: write */
+#define ZOOM_SELECT_WRITE 2
+/** \brief select/poll socket mask: except */
+#define ZOOM_SELECT_EXCEPT 4
+
+/** \brief wait for events on connection(s) (BLOCKING)
+ \param no number of connections (size of cs)
+ \param cs connection array
+ \retval 0 no event was fired
+ \retval >0 event was fired for connection at (retval-1)
+
+ blocking poll for events on a number of connections. Returns positive
+ integer if event occurred ; zero if none occurred and no more
+ events are pending. The positive integer specifies the
+ connection for which the event occurred.
+*/
ZOOM_API(int)
ZOOM_event (int no, ZOOM_connection *cs);
+
+/** \brief determines if connection is idle (no active or pending work)
+ \param c connection
+ \retval 1 is idle
+ \retval 0 is non-idle (active)
+*/
+ZOOM_API(int)
+ZOOM_connection_is_idle(ZOOM_connection c);
+
+
+/** \brief process one event for one of connections given
+ \param no number of connections (size of cs)
+ \param cs connection array
+ \retval 0 no event was processed
+ \retval >0 event was processed for connection at (retval-1)
+
+ This function attemps to deal with outstandings events in a non-blocking
+ mode. If no events was processed (return value of 0), then the system
+ should attempt to deal with sockets in blocking mode using socket
+ select/poll which means calling the following functions:
+ ZOOM_connection_get_socket, ZOOM_connection_get_mask,
+ ZOOM_connection_get_timeout.
+*/
+ZOOM_API(int)
+ ZOOM_event_nonblock(int no, ZOOM_connection *cs);
+
+
+/** \brief process one event for connection
+ \param c connection
+ \retval 0 no event was processed
+ \retval 1 event was processed for connection
+
+ This function attemps to deal with outstandings events in
+ a non-blocking fashion. If no event was processed (return value of 0),
+ then the system should attempt to deal with sockets in blocking mode
+ using socket select/poll which means calling the following functions:
+ ZOOM_connection_get_socket, ZOOM_connection_get_mask,
+ ZOOM_connection_get_timeout. If an event was processed call this
+ function again.
+*/
+ZOOM_API(int)
+ ZOOM_connection_process(ZOOM_connection c);
+
+
+/** \brief get socket fd for ZOOM connection
+ \param c connection
+ \retval -1 no socket assigned for connection
+ \retval >=0 socket for connection
+
+ Use this function when preparing for socket/poll and
+ in conjunction with ZOOM_connection_get_mask.
+*/
+ZOOM_API(int)
+ ZOOM_connection_get_socket(ZOOM_connection c);
+
+
+/** \brief get socket mask for connection
+ \param c connection
+ \returns mask for connection (possibly 0)
+
+ Use this function when preparing for socket select/poll and
+ in conjunction with ZOOM_connection_get_socket.
+*/
+ZOOM_API(int)
+ ZOOM_connection_get_mask(ZOOM_connection c);
+
+
+/** \brief set socket mask for connection (DO NOT call outside zoom) */
+ZOOM_API(int)
+ ZOOM_connection_set_mask(ZOOM_connection c, int mask);
+
+
+/** \brief get timeout in seconds for ZOOM connection
+ \param c connection
+ \returns timeout value in seconds
+
+ Use this function when preparing for socket/poll and
+ in conjunction with ZOOM_connection_get_socket.
+*/
+ZOOM_API(int)
+ ZOOM_connection_get_timeout(ZOOM_connection c);
+
+
+/** \brief fire socket event timeout
+ \param c connection
+ \retval 0 event was fired OK
+ \retval -1 event was not fired
+
+ Call this function when a timeout occurs - for example in the
+ case of select(2) returning 0.
+*/
+ZOOM_API(int)
+ ZOOM_connection_fire_event_timeout(ZOOM_connection c);
+
+
+/** \brief fire socket event activity (read,write,except)
+ \param c connection
+ \param mask or'ed mask of ZOOM_SELECT_.. values
+ \retval 0 event was fired OK
+ \retval -1 event was not fired
+*/
+ZOOM_API(int)
+ ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask);
+
+
+
+/** \brief peek at next event
+ \param c connection
+ \returns ZOOM_EVENT_NONE (for no events in queue), ZOOM_EVENT_CONNECT, ..
+
+ Does not actually remove the event from the event queue. ZOOM_event and
+ ZOOM_process_event removes one event.
+*/
+
ZOOM_API(int)
-ZOOM_connection_is_idle(ZOOM_connection cs);
+ ZOOM_connection_peek_event(ZOOM_connection c);
ZOOM_END_CDECL
/*