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435eabeac8
Also: - support per-directory and per-upper-directory whitelist entries. - convert badlist input grep tweak into the above format. (except for 'And' which had just a few hits.) - fix many code exceptions, but do not enforce. (there also remain about 350 'will' uses in lib) - fix badwords in example code, drop exceptions. - badwords-all: convert to Perl. To make it usable from CMake. - FAQ: reword to not use 'will'. Drop exception. Closes #20886
95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "curl_setup.h"
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#ifndef HAVE_SELECT
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#error "We cannot compile without select() support."
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#endif
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#elif defined(HAVE_UNISTD_H)
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#include <unistd.h>
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#endif
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#ifdef MSDOS
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#include <dos.h> /* delay() */
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#endif
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#include "curlx/timediff.h"
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#include "curlx/wait.h"
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/*
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* Internal function used for waiting a specific amount of ms in
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* Curl_socket_check() and Curl_poll() when no file descriptor is provided to
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* wait on, being used to delay execution. Winsock select() and poll() timeout
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* mechanisms need a valid socket descriptor in a not null file descriptor set
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* to work. Waiting indefinitely with this function is not allowed, a zero or
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* negative timeout value is returned immediately. Timeout resolution,
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* accuracy, as well as maximum supported value is system dependent, neither
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* factor is a critical issue for the intended use of this function in the
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* library.
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*
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* Return values:
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* -1 = system call error, or invalid timeout value
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* 0 = specified timeout has elapsed, or interrupted
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*/
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int curlx_wait_ms(timediff_t timeout_ms)
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{
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int r = 0;
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if(!timeout_ms)
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return 0;
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if(timeout_ms < 0) {
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SET_SOCKERRNO(SOCKEINVAL);
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return -1;
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}
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#ifdef MSDOS
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delay((unsigned int)timeout_ms);
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#elif defined(_WIN32)
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/* prevent overflow, timeout_ms is typecast to ULONG/DWORD. */
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#if TIMEDIFF_T_MAX >= ULONG_MAX
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if(timeout_ms >= ULONG_MAX)
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timeout_ms = ULONG_MAX - 1;
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/* do not use ULONG_MAX, because that is equal to INFINITE */
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#endif
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Sleep((DWORD)timeout_ms);
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#else
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/* avoid using poll() for this since it behaves incorrectly with no sockets
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on Apple operating systems */
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{
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struct timeval pending_tv;
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r = select(0, NULL, NULL, NULL, curlx_mstotv(&pending_tv, timeout_ms));
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}
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#endif /* _WIN32 */
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if(r) {
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if((r == -1) && (SOCKERRNO == SOCKEINTR))
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/* make EINTR from select or poll not a "lethal" error */
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r = 0;
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else
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r = -1;
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}
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return r;
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}
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