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Diffstat (limited to 'nuttx/netutils/thttpd/fdwatch.h')
-rw-r--r-- | nuttx/netutils/thttpd/fdwatch.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/nuttx/netutils/thttpd/fdwatch.h b/nuttx/netutils/thttpd/fdwatch.h new file mode 100644 index 000000000..76c8c02ae --- /dev/null +++ b/nuttx/netutils/thttpd/fdwatch.h @@ -0,0 +1,86 @@ +/**************************************************************************** + * netutils/thttpd/fdwatch.h + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Derived from the file of the same name in THTTPD: + * + * Copyright © 1999 by Jef Poskanzer <jef@mail.acme.com>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#ifndef __NETUTILS_THTTPD_FDWATCH_H +#define __NETUTILS_THTTPD_FDWATCH_H + +#define FDW_READ 0 +#define FDW_WRITE 1 + +#ifndef INFTIM +# define INFTIM -1 +#endif + +/* Figure out how many file descriptors the system allows, and + * initialize the fdwatch data structures. Returns -1 on failure. + */ + +extern int fdwatch_get_nfiles(void); + +/* Add a descriptor to the watch list. rw is either FDW_READ or FDW_WRITE. */ + +extern void fdwatch_add_fd(int fd, void *client_data, int rw); + +/* Delete a descriptor from the watch list. */ + +extern void fdwatch_del_fd(int fd); + +/* Do the watch. Return value is the number of descriptors that are ready, + * or 0 if the timeout expired, or -1 on errors. A timeout of INFTIM means + * wait indefinitely. + */ + +extern int fdwatch(long timeout_msecs); + +/* Check if a descriptor was ready. */ + +extern int fdwatch_check_fd(int fd); + +/* Get the client data for the next returned event. Returns -1 when there + * are no more events. + */ + +extern void *fdwatch_get_next_client_data(void); + +/* Generate debugging statistics syslog message. */ + +extern void fdwatch_logstats(long secs); + +#endif /* __NETUTILS_THTTPD_FDWATCH_H */ + |