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README	3.32 KB	-rw-r--r--
asn1.h	18.14 KB	-rw-r--r--
callback.h	2.66 KB	-rw-r--r--
cert_util.h	8.07 KB	-rw-r--r--
check_varbind.h	1.96 KB	-rw-r--r--
container.h	15.84 KB	-rw-r--r--
container_binary_array.h	1.01 KB	-rw-r--r--
container_iterator.h	2.4 KB	-rw-r--r--
container_list_ssll.h	479 B	-rw-r--r--
container_null.h	338 B	-rw-r--r--
data_list.h	3.66 KB	-rw-r--r--
default_store.h	9.6 KB	-rw-r--r--
dir_utils.h	1.91 KB	-rw-r--r--
factory.h	1.52 KB	-rw-r--r--
fd_event_manager.h	5.27 KB	-rw-r--r--
file_utils.h	2.17 KB	-rw-r--r--
getopt.h	454 B	-rw-r--r--
int64.h	1.53 KB	-rw-r--r--
keytools.h	2.01 KB	-rw-r--r--
large_fd_set.h	5.29 KB	-rw-r--r--
lcd_time.h	3.99 KB	-rw-r--r--
md5.h	2.64 KB	-rw-r--r--
mib.h	23.69 KB	-rw-r--r--
mt_support.h	1.95 KB	-rw-r--r--
oid.h	335 B	-rw-r--r--
oid_stash.h	3 KB	-rw-r--r--
parse.h	8.72 KB	-rw-r--r--
read_config.h	6.32 KB	-rw-r--r--
scapi.h	4.05 KB	-rw-r--r--
snmp-tc.h	1.83 KB	-rw-r--r--
snmp.h	13.34 KB	-rw-r--r--
snmpAliasDomain.h	678 B	-rw-r--r--
snmpCallbackDomain.h	2.81 KB	-rw-r--r--
snmpDTLSUDPDomain.h	854 B	-rw-r--r--
snmpIPv4BaseDomain.h	875 B	-rw-r--r--
snmpIPv6BaseDomain.h	785 B	-rw-r--r--
snmpSocketBaseDomain.h	501 B	-rw-r--r--
snmpTCPBaseDomain.h	506 B	-rw-r--r--
snmpTCPDomain.h	838 B	-rw-r--r--
snmpTCPIPv6Domain.h	774 B	-rw-r--r--
snmpTLSBaseDomain.h	2.88 KB	-rw-r--r--
snmpTLSTCPDomain.h	806 B	-rw-r--r--
snmpUDPBaseDomain.h	1.29 KB	-rw-r--r--
snmpUDPDomain.h	1.7 KB	-rw-r--r--
snmpUDPIPv4BaseDomain.h	1.13 KB	-rw-r--r--
snmpUDPIPv6Domain.h	1.66 KB	-rw-r--r--
snmpUnixDomain.h	1.58 KB	-rw-r--r--
snmp_alarm.h	2.4 KB	-rw-r--r--
snmp_api.h	28.75 KB	-rw-r--r--
snmp_assert.h	3.74 KB	-rw-r--r--
snmp_client.h	5.68 KB	-rw-r--r--
snmp_debug.h	8.75 KB	-rw-r--r--
snmp_enum.h	4.15 KB	-rw-r--r--
snmp_impl.h	4.46 KB	-rw-r--r--
snmp_logging.h	3.84 KB	-rw-r--r--
snmp_parse_args.h	2.95 KB	-rw-r--r--
snmp_secmod.h	5.79 KB	-rw-r--r--
snmp_service.h	813 B	-rw-r--r--
snmp_transport.h	9.67 KB	-rw-r--r--
snmptsm.h	901 B	-rw-r--r--
snmpusm.h	12.11 KB	-rw-r--r--
snmpv3-security-includes.h	157 B	-rw-r--r--
snmpv3.h	2.22 KB	-rw-r--r--
system.h	7.08 KB	-rw-r--r--
text_utils.h	3.4 KB	-rw-r--r--
tools.h	10.02 KB	-rw-r--r--
transform_oids.h	1.17 KB	-rw-r--r--
types.h	1.89 KB	-rw-r--r--
ucd_compat.h	1.18 KB	-rw-r--r--
vacm.h	8.6 KB	-rw-r--r--
winpipe.h	1.71 KB	-rw-r--r--
winservice.h	3.52 KB	-rw-r--r--

Code Editor : large_fd_set.h

/**
 * @file  large_fd_set.h
 *
 * @brief Macro's and functions for manipulation of large file descriptor sets.
 */

#ifndef LARGE_FD_SET_H
#define LARGE_FD_SET_H

#include <net-snmp/net-snmp-config.h>
#include <net-snmp/types.h>

#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif

#if defined(HAVE_WINSOCK_H) && !defined(_WINSOCKAPI_) && !defined(_WINSOCK_H)
#error <winsock.h> or <winsock2.h> must have been included before this file.
#endif

#ifdef __cplusplus
extern "C" {
#endif

/**
 * Add socket fd to the set *fdset if not yet present.
 * Enlarges the set if necessary.
 */
#define NETSNMP_LARGE_FD_SET(fd, fdset) \
                    netsnmp_large_fd_setfd(fd, fdset)

/**
 * Remove socket fd from the set *fdset.
 * Do nothing if fd is not present in *fdset.
 * Do nothing if fd >= fdset->lfs_setsize.
 */
#define NETSNMP_LARGE_FD_CLR(fd, fdset) \
                    netsnmp_large_fd_clr(fd, fdset)

/**
 * Test whether set *fdset contains socket fd.
 * Evaluates to zero (false) if fd >= fdset->lfs_setsize.
 */
#define NETSNMP_LARGE_FD_ISSET(fd, fdset) \
                    netsnmp_large_fd_is_set(fd, fdset)

#if !defined(cygwin) && defined(HAVE_WINSOCK_H)

/**
 * Number of bytes needed to store a number of file descriptors as a
 * struct fd_set.
 */
#define NETSNMP_FD_SET_BYTES(setsize)                                   \
    (sizeof(fd_set) + ((setsize) > FD_SETSIZE ?                         \
                       ((setsize) - FD_SETSIZE) * sizeof(SOCKET) : 0))

/** Remove all sockets from the set *fdset. */
#define NETSNMP_LARGE_FD_ZERO(fdset) \
    do { (fdset)->lfs_setptr->fd_count = 0; } while(0)

NETSNMP_IMPORT
void   netsnmp_large_fd_setfd( SOCKET fd, netsnmp_large_fd_set *fdset);
NETSNMP_IMPORT
void   netsnmp_large_fd_clr(   SOCKET fd, netsnmp_large_fd_set *fdset);
NETSNMP_IMPORT
int    netsnmp_large_fd_is_set(SOCKET fd, netsnmp_large_fd_set *fdset);

#else

/**
 * Size of a single element of the array with file descriptor bitmasks.
 *
 * According to SUSv2, this array must have the name fds_bits. See also
 * <a href="http://www.opengroup.org/onlinepubs/007908775/xsh/systime.h.html">The Single UNIX Specification, Version 2, &lt;sys/time.h&gt;</a>.
 */
#define NETSNMP_FD_MASK_SIZE sizeof(((fd_set*)0)->fds_bits[0])

/** Number of bits in one element of the fd_set.fds_bits array. */
#define NETSNMP_BITS_PER_FD_MASK (8 * NETSNMP_FD_MASK_SIZE)

/** Number of elements needed for the fds_bits array. */
#define NETSNMP_FD_SET_ELEM_COUNT(setsize) \
    (setsize + NETSNMP_BITS_PER_FD_MASK - 1) / NETSNMP_BITS_PER_FD_MASK

/**
 * Number of bytes needed to store a number of file descriptors as a
 * struct fd_set.
 */
#define NETSNMP_FD_SET_BYTES(setsize)                                    \
    (sizeof(fd_set) + ((setsize) > FD_SETSIZE ?                          \
                       NETSNMP_FD_SET_ELEM_COUNT((setsize) - FD_SETSIZE) \
                       * NETSNMP_FD_MASK_SIZE : 0))

/** Remove all file descriptors from the set *fdset. */
#define NETSNMP_LARGE_FD_ZERO(fdset)                            \
    do {                                                        \
        memset((fdset)->lfs_setptr, 0,                          \
               NETSNMP_FD_SET_BYTES((fdset)->lfs_setsize));     \
    } while (0)

void   netsnmp_large_fd_setfd( int fd, netsnmp_large_fd_set *fdset);
void   netsnmp_large_fd_clr(   int fd, netsnmp_large_fd_set *fdset);
int    netsnmp_large_fd_is_set(int fd, netsnmp_large_fd_set *fdset);

#endif

/**
 * Initialize a netsnmp_large_fd_set structure.
 *
 * Note: this function only initializes the lfs_setsize and lfs_setptr
 * members of netsnmp_large_fd_set, not the file descriptor set itself.
 * The file descriptor set must be initialized separately, e.g. via
 * NETSNMP_LARGE_FD_CLR().
 */
NETSNMP_IMPORT
void   netsnmp_large_fd_set_init(   netsnmp_large_fd_set *fdset, int setsize);

/**
 * Modify the size of a file descriptor set and preserve the first
 * min(fdset->lfs_setsize, setsize) file descriptors.
 *
 * Returns 1 upon success or 0 if memory allocation failed.
 */
int    netsnmp_large_fd_set_resize( netsnmp_large_fd_set *fdset, int setsize);

/**
 * Synchronous I/O multiplexing for large file descriptor sets.
 *
 * On POSIX systems, any file descriptor set with size below numfds will be
 * resized before invoking select().
 *
 * @see See also select(2) for more information.
 */
NETSNMP_IMPORT
int    netsnmp_large_fd_set_select(int numfds, netsnmp_large_fd_set *readfds,
			    netsnmp_large_fd_set *writefds,
			    netsnmp_large_fd_set *exceptfds,
			    struct timeval *timeout);

/** Deallocate the memory allocated by netsnmp_large_fd_set_init. */
NETSNMP_IMPORT
void   netsnmp_large_fd_set_cleanup(netsnmp_large_fd_set *fdset);

/**
 * Copy an fd_set to a netsnmp_large_fd_set structure.
 *
 * @note dst must have been initialized before this function is called.
 */
void   netsnmp_copy_fd_set_to_large_fd_set(netsnmp_large_fd_set *dst,
                                                   const fd_set *src);

/**
 * Copy a netsnmp_large_fd_set structure into an fd_set.
 *
 * @return 0 upon success, -1 when copying fails because *src is too large to
 *         fit into *dst.
 */
int    netsnmp_copy_large_fd_set_to_fd_set(              fd_set *dst,
                                     const netsnmp_large_fd_set *src);

#ifdef __cplusplus
}
#endif

#endif /* LARGE_FD_SET_H */

${this.title}

Code Editor : large_fd_set.h