diff options
Diffstat (limited to 'StdLib/LibC/Uefi/select.c')
| -rw-r--r-- | StdLib/LibC/Uefi/select.c | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/StdLib/LibC/Uefi/select.c b/StdLib/LibC/Uefi/select.c deleted file mode 100644 index 28951856d1..0000000000 --- a/StdLib/LibC/Uefi/select.c +++ /dev/null @@ -1,256 +0,0 @@ -/*
- * Copyright (c) 1982, 1986, 1989, 1993
- * The Regents of the University of California. All rights reserved.
- * (c) UNIX System Laboratories, Inc.
- * All or some portions of this file are derived from material licensed
- * to the University of California by American Telephone and Telegraph
- * Co. or Unix System Laboratories, Inc. and are reproduced herein with
- * the permission of UNIX System Laboratories, Inc.
- *
- * Portions copyright (c) 1999, 2000
- * Intel Corporation.
- * 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.
- *
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- *
- * This product includes software developed by the University of
- * California, Berkeley, Intel Corporation, and its contributors.
- *
- * 4. Neither the name of University, Intel Corporation, or their respective
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS, INTEL CORPORATION 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 REGENTS,
- * INTEL CORPORATION 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.
- *
- * @(#)sys_generic.c 8.5 (Berkeley) 1/21/94
- * $Id: select.c,v 1.1.1.1 2003/11/19 01:50:30 kyu3 Exp $
- */
-#include <Library/UefiBootServicesTableLib.h>
-
-#include <LibConfig.h>
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <strings.h>
-#include <sys/poll.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#ifndef KERNEL
-#define KERNEL
-#include <errno.h>
-#undef KERNEL
-#else
-#include <errno.h>
-#endif
-
-#ifdef EFI_NT_EMULATOR
-#define _SELECT_DELAY_ 10000
-#else
-#define _SELECT_DELAY_ 1000
-#endif
-
-#define MAX_SLEEP_DELAY 0xfffffffe
-
-/** Sleep for the specified number of Microseconds.
-
- Implements the usleep(3) function.
-
- @param[in] Microseconds Number of microseconds to sleep.
-
- @retval 0 Always returns zero.
-**/
-int
-usleep( useconds_t Microseconds )
-{
- while ( MAX_SLEEP_DELAY < Microseconds ) {
- gBS->Stall ( MAX_SLEEP_DELAY );
- Microseconds -= MAX_SLEEP_DELAY;
- }
- gBS->Stall((UINTN)Microseconds );
- return (0);
-}
-
-unsigned int
-sleep( unsigned int Seconds )
-{
- return (usleep( (useconds_t)(Seconds * 1000000) ));
-}
-
-static int
-selscan(
- fd_mask **ibits,
- fd_mask **obits,
- int nfd,
- int *nselected
- )
-{
- int msk;
- int i;
- int j;
- int fd;
- int n;
- struct pollfd pfd;
- int FdCount;
- fd_mask bits;
- /* Note: backend also returns POLLHUP/POLLERR if appropriate. */
- static int16_t flag[3] = { POLLRDNORM, POLLWRNORM, POLLRDBAND };
-
- for (msk = 0, n = 0; msk < 3; msk++) {
- if (ibits[msk] == NULL)
- continue;
- for (i = 0; i < nfd; i += NFDBITS) {
- bits = ibits[ msk ][ i / NFDBITS ];
- while (( 0 != (j = ffs(bits))) && ((fd = i + --j) < nfd)) {
- bits &= ~(1 << j);
-
- pfd.fd = fd;
- pfd.events = flag[msk];
- pfd.revents = 0;
- FdCount = poll ( &pfd, 1, 0 );
- if ( -1 == FdCount ) {
- return errno;
- }
- if ( 0 != FdCount ) {
- obits[msk][(fd)/NFDBITS] |=
- (1 << ((fd) % NFDBITS));
- n++;
- break;
- }
- }
- }
- }
- *nselected = n;
- return (0);
-}
-
-int
-select(
- int nd,
- fd_set *in,
- fd_set *ou,
- fd_set *ex,
- struct timeval *tv
- )
-{
- fd_mask *ibits[3], *obits[3], *selbits, *sbp;
- int error, forever, nselected;
- u_int nbufbytes, ncpbytes, nfdbits;
- int64_t timo;
-
- if (nd < 0)
- return (EINVAL);
-
- /*
- * Allocate just enough bits for the non-null fd_sets. Use the
- * preallocated auto buffer if possible.
- */
- nfdbits = roundup(nd, NFDBITS);
- ncpbytes = nfdbits / NBBY;
- nbufbytes = 0;
- if (in != NULL)
- nbufbytes += 2 * ncpbytes;
- if (ou != NULL)
- nbufbytes += 2 * ncpbytes;
- if (ex != NULL)
- nbufbytes += 2 * ncpbytes;
- selbits = malloc(nbufbytes);
-
- /*
- * Assign pointers into the bit buffers and fetch the input bits.
- * Put the output buffers together so that they can be bzeroed
- * together.
- */
- sbp = selbits;
-#define getbits(name, x) \
- do { \
- if (name == NULL) \
- ibits[x] = NULL; \
- else { \
- ibits[x] = sbp + nbufbytes / 2 / sizeof *sbp; \
- obits[x] = sbp; \
- sbp += ncpbytes / sizeof *sbp; \
- bcopy(name, ibits[x], ncpbytes); \
- } \
- } while (0)
- getbits(in, 0);
- getbits(ou, 1);
- getbits(ex, 2);
-#undef getbits
- if (nbufbytes != 0)
- memset(selbits, 0, nbufbytes / 2);
-
- if (tv) {
- timo = tv->tv_usec + (tv->tv_sec * 1000000);
- forever = 0;
- } else {
- timo = 0;
- forever = 1;
- }
-
- /*
- * Poll for I/O events
- */
- nselected = 0;
- do {
- /*
- * Scan for pending I/O
- */
- error = selscan(ibits, obits, nd, &nselected);
- if (error || nselected)
- break;
-
- /*
- * Adjust timeout is needed
- */
- if (timo) {
- /*
- * Give it a rest
- */
- usleep( _SELECT_DELAY_ );
- timo -= _SELECT_DELAY_;
- }
-
- } while (timo > 0 || forever);
-
- /* select is not restarted after signals... */
- if (error == ERESTART)
- error = EINTR;
- else if (error == EWOULDBLOCK)
- error = 0;
-
-#define putbits(name, x) if (name) bcopy(obits[x], name, ncpbytes)
- if (error == 0) {
- putbits(in, 0);
- putbits(ou, 1);
- putbits(ex, 2);
-#undef putbits
- } else {
- errno = error;
- nselected = -1;
- }
-
- free( selbits );
- return ( nselected );
-}
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