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/*-------------------------------------------------------------------------
*
* noblock.c
* set a file descriptor as non-blocking
*
* Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* src/port/noblock.c
*
*-------------------------------------------------------------------------
*/
#include "c.h"
#include <fcntl.h>
bool
pg_set_noblock(pgsocket sock)
{
#if !defined(WIN32)
return (fcntl(sock, F_SETFL, O_NONBLOCK) != -1);
#else
unsigned long ioctlsocket_ret = 1;
/* Returns non-0 on failure, while fcntl() returns -1 on failure */
return (ioctlsocket(sock, FIONBIO, &ioctlsocket_ret) == 0);
#endif
}
bool
pg_set_block(pgsocket sock)
{
#if !defined(WIN32)
int flags;
flags = fcntl(sock, F_GETFL);
if (flags < 0 || fcntl(sock, F_SETFL, (long) (flags & ~O_NONBLOCK)))
return false;
return true;
#else
unsigned long ioctlsocket_ret = 0;
/* Returns non-0 on failure, while fcntl() returns -1 on failure */
return (ioctlsocket(sock, FIONBIO, &ioctlsocket_ret) == 0);
#endif
}
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