mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 03:40:34 +02:00
import `poll' from gnulib
* lib/Makefile.am: * lib/poll.c: * lib/poll.in.h: * m4/gnulib-cache.m4: * m4/gnulib-comp.m4: * m4/poll.m4: * m4/poll_h.m4: Add poll gnulib module.
This commit is contained in:
Jason Earl
Andy Wingo
parent
ccd0ae1fbb
commit
428f9e95fc
7 changed files with 919 additions and 2 deletions
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@ -21,7 +21,7 @@
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# the same distribution terms as the rest of that program.
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#
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# Generated by gnulib-tool.
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# Reproduce by: gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=3 --no-conditional-dependencies --libtool --macro-prefix=gl --no-vc-files accept alignof alloca-opt announce-gen autobuild bind byteswap canonicalize-lgpl ceil clock-time close connect dirfd duplocale environ extensions flock floor fpieee frexp fstat full-read full-write func gendocs getaddrinfo getlogin getpeername getsockname getsockopt git-version-gen gitlog-to-changelog gnu-web-doc-update gnupload havelib iconv_open-utf inet_ntop inet_pton isinf isnan ldexp lib-symbol-versions lib-symbol-visibility libunistring listen localcharset locale log1p maintainer-makefile malloc-gnu malloca nl_langinfo nproc open pipe-posix pipe2 putenv recv recvfrom regex rename select send sendto setenv setsockopt shutdown socket stat-time stdlib strftime striconveh string sys_stat times trunc verify vsnprintf warnings wchar
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# Reproduce by: gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=3 --no-conditional-dependencies --libtool --macro-prefix=gl --no-vc-files accept alignof alloca-opt announce-gen autobuild bind byteswap canonicalize-lgpl ceil clock-time close connect dirfd duplocale environ extensions flock floor fpieee frexp fstat full-read full-write func gendocs getaddrinfo getlogin getpeername getsockname getsockopt git-version-gen gitlog-to-changelog gnu-web-doc-update gnupload havelib iconv_open-utf inet_ntop inet_pton isinf isnan ldexp lib-symbol-versions lib-symbol-visibility libunistring listen localcharset locale log1p maintainer-makefile malloc-gnu malloca nl_langinfo nproc open pipe-posix pipe2 poll putenv recv recvfrom regex rename select send sendto setenv setsockopt shutdown socket stat-time stdlib strftime striconveh string sys_stat times trunc verify vsnprintf warnings wchar
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AUTOMAKE_OPTIONS = 1.5 gnits subdir-objects
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@ -62,6 +62,7 @@ libgnu_la_LDFLAGS += $(ISNANL_LIBM)
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libgnu_la_LDFLAGS += $(LDEXP_LIBM)
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libgnu_la_LDFLAGS += $(LIBSOCKET)
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libgnu_la_LDFLAGS += $(LIB_CLOCK_GETTIME)
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libgnu_la_LDFLAGS += $(LIB_POLL)
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libgnu_la_LDFLAGS += $(LIB_SELECT)
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libgnu_la_LDFLAGS += $(LOG1P_LIBM)
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libgnu_la_LDFLAGS += $(LOG_LIBM)
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@ -1484,6 +1485,44 @@ libgnu_la_SOURCES += pipe2.c
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## end gnulib module pipe2
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## begin gnulib module poll
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EXTRA_DIST += poll.c
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EXTRA_libgnu_la_SOURCES += poll.c
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## end gnulib module poll
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## begin gnulib module poll-h
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BUILT_SOURCES += poll.h
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# We need the following in order to create <poll.h> when the system
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# doesn't have one.
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poll.h: poll.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
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$(AM_V_GEN)rm -f $@-t $@ && \
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{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
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sed -e 's|@''GUARD_PREFIX''@|GL|g' \
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-e 's|@''HAVE_POLL_H''@|$(HAVE_POLL_H)|g' \
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-e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
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-e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
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-e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
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-e 's|@''NEXT_POLL_H''@|$(NEXT_POLL_H)|g' \
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-e 's/@''GNULIB_POLL''@/$(GNULIB_POLL)/g' \
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-e 's|@''HAVE_POLL''@|$(HAVE_POLL)|g' \
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-e 's|@''REPLACE_POLL''@|$(REPLACE_POLL)|g' \
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-e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
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-e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
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< $(srcdir)/poll.in.h; \
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} > $@-t && \
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mv -f $@-t $@
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MOSTLYCLEANFILES += poll.h poll.h-t
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EXTRA_DIST += poll.in.h
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## end gnulib module poll-h
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## begin gnulib module putenv
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611
lib/poll.c
Normal file
611
lib/poll.c
Normal file
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@ -0,0 +1,611 @@
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/* Emulation for poll(2)
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Contributed by Paolo Bonzini.
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Copyright 2001-2003, 2006-2013 Free Software Foundation, Inc.
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This file is part of gnulib.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, see <http://www.gnu.org/licenses/>. */
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/* Tell gcc not to warn about the (nfd < 0) tests, below. */
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#if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__
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# pragma GCC diagnostic ignored "-Wtype-limits"
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#endif
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#include <config.h>
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#include <alloca.h>
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#include <sys/types.h>
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/* Specification. */
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#include <poll.h>
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#include <errno.h>
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#include <limits.h>
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#include <assert.h>
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#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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# define WINDOWS_NATIVE
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# include <winsock2.h>
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# include <windows.h>
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# include <io.h>
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# include <stdio.h>
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# include <conio.h>
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# include "msvc-nothrow.h"
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#else
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# include <sys/time.h>
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# include <sys/socket.h>
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# include <sys/select.h>
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# include <unistd.h>
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#endif
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#ifdef HAVE_SYS_IOCTL_H
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# include <sys/ioctl.h>
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#endif
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#ifdef HAVE_SYS_FILIO_H
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# include <sys/filio.h>
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#endif
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#include <time.h>
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#ifndef INFTIM
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# define INFTIM (-1)
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#endif
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/* BeOS does not have MSG_PEEK. */
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#ifndef MSG_PEEK
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# define MSG_PEEK 0
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#endif
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#ifdef WINDOWS_NATIVE
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/* Optimized test whether a HANDLE refers to a console.
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See <http://lists.gnu.org/archive/html/bug-gnulib/2009-08/msg00065.html>. */
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#define IsConsoleHandle(h) (((intptr_t) (h) & 3) == 3)
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static BOOL
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IsSocketHandle (HANDLE h)
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{
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WSANETWORKEVENTS ev;
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if (IsConsoleHandle (h))
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return FALSE;
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/* Under Wine, it seems that getsockopt returns 0 for pipes too.
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WSAEnumNetworkEvents instead distinguishes the two correctly. */
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ev.lNetworkEvents = 0xDEADBEEF;
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WSAEnumNetworkEvents ((SOCKET) h, NULL, &ev);
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return ev.lNetworkEvents != 0xDEADBEEF;
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}
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/* Declare data structures for ntdll functions. */
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typedef struct _FILE_PIPE_LOCAL_INFORMATION {
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ULONG NamedPipeType;
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ULONG NamedPipeConfiguration;
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ULONG MaximumInstances;
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ULONG CurrentInstances;
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ULONG InboundQuota;
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ULONG ReadDataAvailable;
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ULONG OutboundQuota;
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ULONG WriteQuotaAvailable;
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ULONG NamedPipeState;
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ULONG NamedPipeEnd;
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} FILE_PIPE_LOCAL_INFORMATION, *PFILE_PIPE_LOCAL_INFORMATION;
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typedef struct _IO_STATUS_BLOCK
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{
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union {
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DWORD Status;
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PVOID Pointer;
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} u;
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ULONG_PTR Information;
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} IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;
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typedef enum _FILE_INFORMATION_CLASS {
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FilePipeLocalInformation = 24
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} FILE_INFORMATION_CLASS, *PFILE_INFORMATION_CLASS;
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typedef DWORD (WINAPI *PNtQueryInformationFile)
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(HANDLE, IO_STATUS_BLOCK *, VOID *, ULONG, FILE_INFORMATION_CLASS);
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# ifndef PIPE_BUF
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# define PIPE_BUF 512
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# endif
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/* Compute revents values for file handle H. If some events cannot happen
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for the handle, eliminate them from *P_SOUGHT. */
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static int
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windows_compute_revents (HANDLE h, int *p_sought)
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{
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int i, ret, happened;
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INPUT_RECORD *irbuffer;
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DWORD avail, nbuffer;
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BOOL bRet;
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IO_STATUS_BLOCK iosb;
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FILE_PIPE_LOCAL_INFORMATION fpli;
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static PNtQueryInformationFile NtQueryInformationFile;
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static BOOL once_only;
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switch (GetFileType (h))
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{
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case FILE_TYPE_PIPE:
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if (!once_only)
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{
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NtQueryInformationFile = (PNtQueryInformationFile)
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GetProcAddress (GetModuleHandle ("ntdll.dll"),
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"NtQueryInformationFile");
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once_only = TRUE;
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}
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happened = 0;
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if (PeekNamedPipe (h, NULL, 0, NULL, &avail, NULL) != 0)
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{
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if (avail)
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happened |= *p_sought & (POLLIN | POLLRDNORM);
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}
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else if (GetLastError () == ERROR_BROKEN_PIPE)
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happened |= POLLHUP;
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else
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{
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/* It was the write-end of the pipe. Check if it is writable.
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If NtQueryInformationFile fails, optimistically assume the pipe is
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writable. This could happen on Windows 9x, where
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NtQueryInformationFile is not available, or if we inherit a pipe
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that doesn't permit FILE_READ_ATTRIBUTES access on the write end
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(I think this should not happen since Windows XP SP2; WINE seems
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fine too). Otherwise, ensure that enough space is available for
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atomic writes. */
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memset (&iosb, 0, sizeof (iosb));
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memset (&fpli, 0, sizeof (fpli));
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if (!NtQueryInformationFile
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|| NtQueryInformationFile (h, &iosb, &fpli, sizeof (fpli),
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FilePipeLocalInformation)
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|| fpli.WriteQuotaAvailable >= PIPE_BUF
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|| (fpli.OutboundQuota < PIPE_BUF &&
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fpli.WriteQuotaAvailable == fpli.OutboundQuota))
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happened |= *p_sought & (POLLOUT | POLLWRNORM | POLLWRBAND);
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}
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return happened;
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case FILE_TYPE_CHAR:
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ret = WaitForSingleObject (h, 0);
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if (!IsConsoleHandle (h))
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return ret == WAIT_OBJECT_0 ? *p_sought & ~(POLLPRI | POLLRDBAND) : 0;
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nbuffer = avail = 0;
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bRet = GetNumberOfConsoleInputEvents (h, &nbuffer);
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if (bRet)
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{
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/* Input buffer. */
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*p_sought &= POLLIN | POLLRDNORM;
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if (nbuffer == 0)
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return POLLHUP;
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if (!*p_sought)
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return 0;
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irbuffer = (INPUT_RECORD *) alloca (nbuffer * sizeof (INPUT_RECORD));
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bRet = PeekConsoleInput (h, irbuffer, nbuffer, &avail);
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if (!bRet || avail == 0)
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return POLLHUP;
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for (i = 0; i < avail; i++)
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if (irbuffer[i].EventType == KEY_EVENT)
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return *p_sought;
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return 0;
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}
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else
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{
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/* Screen buffer. */
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*p_sought &= POLLOUT | POLLWRNORM | POLLWRBAND;
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return *p_sought;
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}
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default:
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ret = WaitForSingleObject (h, 0);
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if (ret == WAIT_OBJECT_0)
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return *p_sought & ~(POLLPRI | POLLRDBAND);
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return *p_sought & (POLLOUT | POLLWRNORM | POLLWRBAND);
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}
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}
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/* Convert fd_sets returned by select into revents values. */
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static int
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windows_compute_revents_socket (SOCKET h, int sought, long lNetworkEvents)
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{
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int happened = 0;
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if ((lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE)) == FD_ACCEPT)
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happened |= (POLLIN | POLLRDNORM) & sought;
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else if (lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
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{
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int r, error;
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char data[64];
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WSASetLastError (0);
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r = recv (h, data, sizeof (data), MSG_PEEK);
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error = WSAGetLastError ();
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WSASetLastError (0);
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if (r > 0 || error == WSAENOTCONN)
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happened |= (POLLIN | POLLRDNORM) & sought;
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/* Distinguish hung-up sockets from other errors. */
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else if (r == 0 || error == WSAESHUTDOWN || error == WSAECONNRESET
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|| error == WSAECONNABORTED || error == WSAENETRESET)
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happened |= POLLHUP;
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else
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happened |= POLLERR;
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}
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if (lNetworkEvents & (FD_WRITE | FD_CONNECT))
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happened |= (POLLOUT | POLLWRNORM | POLLWRBAND) & sought;
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if (lNetworkEvents & FD_OOB)
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happened |= (POLLPRI | POLLRDBAND) & sought;
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return happened;
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}
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#else /* !MinGW */
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/* Convert select(2) returned fd_sets into poll(2) revents values. */
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static int
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compute_revents (int fd, int sought, fd_set *rfds, fd_set *wfds, fd_set *efds)
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{
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int happened = 0;
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if (FD_ISSET (fd, rfds))
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{
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int r;
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int socket_errno;
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# if defined __MACH__ && defined __APPLE__
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/* There is a bug in Mac OS X that causes it to ignore MSG_PEEK
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for some kinds of descriptors. Detect if this descriptor is a
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connected socket, a server socket, or something else using a
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0-byte recv, and use ioctl(2) to detect POLLHUP. */
|
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r = recv (fd, NULL, 0, MSG_PEEK);
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socket_errno = (r < 0) ? errno : 0;
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if (r == 0 || socket_errno == ENOTSOCK)
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ioctl (fd, FIONREAD, &r);
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# else
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char data[64];
|
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r = recv (fd, data, sizeof (data), MSG_PEEK);
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socket_errno = (r < 0) ? errno : 0;
|
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# endif
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if (r == 0)
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happened |= POLLHUP;
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|
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/* If the event happened on an unconnected server socket,
|
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that's fine. */
|
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else if (r > 0 || ( /* (r == -1) && */ socket_errno == ENOTCONN))
|
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happened |= (POLLIN | POLLRDNORM) & sought;
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|
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/* Distinguish hung-up sockets from other errors. */
|
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else if (socket_errno == ESHUTDOWN || socket_errno == ECONNRESET
|
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|| socket_errno == ECONNABORTED || socket_errno == ENETRESET)
|
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happened |= POLLHUP;
|
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|
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/* some systems can't use recv() on non-socket, including HP NonStop */
|
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else if (socket_errno == ENOTSOCK)
|
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happened |= (POLLIN | POLLRDNORM) & sought;
|
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|
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else
|
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happened |= POLLERR;
|
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}
|
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|
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if (FD_ISSET (fd, wfds))
|
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happened |= (POLLOUT | POLLWRNORM | POLLWRBAND) & sought;
|
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|
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if (FD_ISSET (fd, efds))
|
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happened |= (POLLPRI | POLLRDBAND) & sought;
|
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|
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return happened;
|
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}
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#endif /* !MinGW */
|
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|
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int
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poll (struct pollfd *pfd, nfds_t nfd, int timeout)
|
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{
|
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#ifndef WINDOWS_NATIVE
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fd_set rfds, wfds, efds;
|
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struct timeval tv;
|
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struct timeval *ptv;
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int maxfd, rc;
|
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nfds_t i;
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|
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# ifdef _SC_OPEN_MAX
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static int sc_open_max = -1;
|
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|
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if (nfd < 0
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|| (nfd > sc_open_max
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&& (sc_open_max != -1
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|| nfd > (sc_open_max = sysconf (_SC_OPEN_MAX)))))
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{
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errno = EINVAL;
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return -1;
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}
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# else /* !_SC_OPEN_MAX */
|
||||
# ifdef OPEN_MAX
|
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if (nfd < 0 || nfd > OPEN_MAX)
|
||||
{
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
# endif /* OPEN_MAX -- else, no check is needed */
|
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# endif /* !_SC_OPEN_MAX */
|
||||
|
||||
/* EFAULT is not necessary to implement, but let's do it in the
|
||||
simplest case. */
|
||||
if (!pfd && nfd)
|
||||
{
|
||||
errno = EFAULT;
|
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return -1;
|
||||
}
|
||||
|
||||
/* convert timeout number into a timeval structure */
|
||||
if (timeout == 0)
|
||||
{
|
||||
ptv = &tv;
|
||||
ptv->tv_sec = 0;
|
||||
ptv->tv_usec = 0;
|
||||
}
|
||||
else if (timeout > 0)
|
||||
{
|
||||
ptv = &tv;
|
||||
ptv->tv_sec = timeout / 1000;
|
||||
ptv->tv_usec = (timeout % 1000) * 1000;
|
||||
}
|
||||
else if (timeout == INFTIM)
|
||||
/* wait forever */
|
||||
ptv = NULL;
|
||||
else
|
||||
{
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* create fd sets and determine max fd */
|
||||
maxfd = -1;
|
||||
FD_ZERO (&rfds);
|
||||
FD_ZERO (&wfds);
|
||||
FD_ZERO (&efds);
|
||||
for (i = 0; i < nfd; i++)
|
||||
{
|
||||
if (pfd[i].fd < 0)
|
||||
continue;
|
||||
|
||||
if (pfd[i].events & (POLLIN | POLLRDNORM))
|
||||
FD_SET (pfd[i].fd, &rfds);
|
||||
|
||||
/* see select(2): "the only exceptional condition detectable
|
||||
is out-of-band data received on a socket", hence we push
|
||||
POLLWRBAND events onto wfds instead of efds. */
|
||||
if (pfd[i].events & (POLLOUT | POLLWRNORM | POLLWRBAND))
|
||||
FD_SET (pfd[i].fd, &wfds);
|
||||
if (pfd[i].events & (POLLPRI | POLLRDBAND))
|
||||
FD_SET (pfd[i].fd, &efds);
|
||||
if (pfd[i].fd >= maxfd
|
||||
&& (pfd[i].events & (POLLIN | POLLOUT | POLLPRI
|
||||
| POLLRDNORM | POLLRDBAND
|
||||
| POLLWRNORM | POLLWRBAND)))
|
||||
{
|
||||
maxfd = pfd[i].fd;
|
||||
if (maxfd > FD_SETSIZE)
|
||||
{
|
||||
errno = EOVERFLOW;
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* examine fd sets */
|
||||
rc = select (maxfd + 1, &rfds, &wfds, &efds, ptv);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
|
||||
/* establish results */
|
||||
rc = 0;
|
||||
for (i = 0; i < nfd; i++)
|
||||
if (pfd[i].fd < 0)
|
||||
pfd[i].revents = 0;
|
||||
else
|
||||
{
|
||||
int happened = compute_revents (pfd[i].fd, pfd[i].events,
|
||||
&rfds, &wfds, &efds);
|
||||
if (happened)
|
||||
{
|
||||
pfd[i].revents = happened;
|
||||
rc++;
|
||||
}
|
||||
}
|
||||
|
||||
return rc;
|
||||
#else
|
||||
static struct timeval tv0;
|
||||
static HANDLE hEvent;
|
||||
WSANETWORKEVENTS ev;
|
||||
HANDLE h, handle_array[FD_SETSIZE + 2];
|
||||
DWORD ret, wait_timeout, nhandles;
|
||||
fd_set rfds, wfds, xfds;
|
||||
BOOL poll_again;
|
||||
MSG msg;
|
||||
int rc = 0;
|
||||
nfds_t i;
|
||||
|
||||
if (nfd < 0 || timeout < -1)
|
||||
{
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (!hEvent)
|
||||
hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
|
||||
|
||||
restart:
|
||||
handle_array[0] = hEvent;
|
||||
nhandles = 1;
|
||||
FD_ZERO (&rfds);
|
||||
FD_ZERO (&wfds);
|
||||
FD_ZERO (&xfds);
|
||||
|
||||
/* Classify socket handles and create fd sets. */
|
||||
for (i = 0; i < nfd; i++)
|
||||
{
|
||||
int sought = pfd[i].events;
|
||||
pfd[i].revents = 0;
|
||||
if (pfd[i].fd < 0)
|
||||
continue;
|
||||
if (!(sought & (POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM | POLLWRBAND
|
||||
| POLLPRI | POLLRDBAND)))
|
||||
continue;
|
||||
|
||||
h = (HANDLE) _get_osfhandle (pfd[i].fd);
|
||||
assert (h != NULL);
|
||||
if (IsSocketHandle (h))
|
||||
{
|
||||
int requested = FD_CLOSE;
|
||||
|
||||
/* see above; socket handles are mapped onto select. */
|
||||
if (sought & (POLLIN | POLLRDNORM))
|
||||
{
|
||||
requested |= FD_READ | FD_ACCEPT;
|
||||
FD_SET ((SOCKET) h, &rfds);
|
||||
}
|
||||
if (sought & (POLLOUT | POLLWRNORM | POLLWRBAND))
|
||||
{
|
||||
requested |= FD_WRITE | FD_CONNECT;
|
||||
FD_SET ((SOCKET) h, &wfds);
|
||||
}
|
||||
if (sought & (POLLPRI | POLLRDBAND))
|
||||
{
|
||||
requested |= FD_OOB;
|
||||
FD_SET ((SOCKET) h, &xfds);
|
||||
}
|
||||
|
||||
if (requested)
|
||||
WSAEventSelect ((SOCKET) h, hEvent, requested);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Poll now. If we get an event, do not poll again. Also,
|
||||
screen buffer handles are waitable, and they'll block until
|
||||
a character is available. windows_compute_revents eliminates
|
||||
bits for the "wrong" direction. */
|
||||
pfd[i].revents = windows_compute_revents (h, &sought);
|
||||
if (sought)
|
||||
handle_array[nhandles++] = h;
|
||||
if (pfd[i].revents)
|
||||
timeout = 0;
|
||||
}
|
||||
}
|
||||
|
||||
if (select (0, &rfds, &wfds, &xfds, &tv0) > 0)
|
||||
{
|
||||
/* Do MsgWaitForMultipleObjects anyway to dispatch messages, but
|
||||
no need to call select again. */
|
||||
poll_again = FALSE;
|
||||
wait_timeout = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
poll_again = TRUE;
|
||||
if (timeout == INFTIM)
|
||||
wait_timeout = INFINITE;
|
||||
else
|
||||
wait_timeout = timeout;
|
||||
}
|
||||
|
||||
for (;;)
|
||||
{
|
||||
ret = MsgWaitForMultipleObjects (nhandles, handle_array, FALSE,
|
||||
wait_timeout, QS_ALLINPUT);
|
||||
|
||||
if (ret == WAIT_OBJECT_0 + nhandles)
|
||||
{
|
||||
/* new input of some other kind */
|
||||
BOOL bRet;
|
||||
while ((bRet = PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) != 0)
|
||||
{
|
||||
TranslateMessage (&msg);
|
||||
DispatchMessage (&msg);
|
||||
}
|
||||
}
|
||||
else
|
||||
break;
|
||||
}
|
||||
|
||||
if (poll_again)
|
||||
select (0, &rfds, &wfds, &xfds, &tv0);
|
||||
|
||||
/* Place a sentinel at the end of the array. */
|
||||
handle_array[nhandles] = NULL;
|
||||
nhandles = 1;
|
||||
for (i = 0; i < nfd; i++)
|
||||
{
|
||||
int happened;
|
||||
|
||||
if (pfd[i].fd < 0)
|
||||
continue;
|
||||
if (!(pfd[i].events & (POLLIN | POLLRDNORM |
|
||||
POLLOUT | POLLWRNORM | POLLWRBAND)))
|
||||
continue;
|
||||
|
||||
h = (HANDLE) _get_osfhandle (pfd[i].fd);
|
||||
if (h != handle_array[nhandles])
|
||||
{
|
||||
/* It's a socket. */
|
||||
WSAEnumNetworkEvents ((SOCKET) h, NULL, &ev);
|
||||
WSAEventSelect ((SOCKET) h, 0, 0);
|
||||
|
||||
/* If we're lucky, WSAEnumNetworkEvents already provided a way
|
||||
to distinguish FD_READ and FD_ACCEPT; this saves a recv later. */
|
||||
if (FD_ISSET ((SOCKET) h, &rfds)
|
||||
&& !(ev.lNetworkEvents & (FD_READ | FD_ACCEPT)))
|
||||
ev.lNetworkEvents |= FD_READ | FD_ACCEPT;
|
||||
if (FD_ISSET ((SOCKET) h, &wfds))
|
||||
ev.lNetworkEvents |= FD_WRITE | FD_CONNECT;
|
||||
if (FD_ISSET ((SOCKET) h, &xfds))
|
||||
ev.lNetworkEvents |= FD_OOB;
|
||||
|
||||
happened = windows_compute_revents_socket ((SOCKET) h, pfd[i].events,
|
||||
ev.lNetworkEvents);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Not a socket. */
|
||||
int sought = pfd[i].events;
|
||||
happened = windows_compute_revents (h, &sought);
|
||||
nhandles++;
|
||||
}
|
||||
|
||||
if ((pfd[i].revents |= happened) != 0)
|
||||
rc++;
|
||||
}
|
||||
|
||||
if (!rc && timeout == INFTIM)
|
||||
{
|
||||
SleepEx (1, TRUE);
|
||||
goto restart;
|
||||
}
|
||||
|
||||
return rc;
|
||||
#endif
|
||||
}
|
||||
103
lib/poll.in.h
Normal file
103
lib/poll.in.h
Normal file
|
|
@ -0,0 +1,103 @@
|
|||
/* Header for poll(2) emulation
|
||||
Contributed by Paolo Bonzini.
|
||||
|
||||
Copyright 2001-2003, 2007, 2009-2013 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of gnulib.
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU Lesser General Public License as published by
|
||||
the Free Software Foundation; either version 2, or (at your option)
|
||||
any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public License along
|
||||
with this program; if not, see <http://www.gnu.org/licenses/>. */
|
||||
|
||||
#ifndef _@GUARD_PREFIX@_POLL_H
|
||||
|
||||
#if __GNUC__ >= 3
|
||||
@PRAGMA_SYSTEM_HEADER@
|
||||
#endif
|
||||
@PRAGMA_COLUMNS@
|
||||
|
||||
/* The include_next requires a split double-inclusion guard. */
|
||||
#if @HAVE_POLL_H@
|
||||
# @INCLUDE_NEXT@ @NEXT_POLL_H@
|
||||
#endif
|
||||
|
||||
#ifndef _@GUARD_PREFIX@_POLL_H
|
||||
#define _@GUARD_PREFIX@_POLL_H
|
||||
|
||||
|
||||
/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
|
||||
|
||||
/* The definition of _GL_WARN_ON_USE is copied here. */
|
||||
|
||||
|
||||
#if !@HAVE_POLL_H@
|
||||
|
||||
/* fake a poll(2) environment */
|
||||
# define POLLIN 0x0001 /* any readable data available */
|
||||
# define POLLPRI 0x0002 /* OOB/Urgent readable data */
|
||||
# define POLLOUT 0x0004 /* file descriptor is writable */
|
||||
# define POLLERR 0x0008 /* some poll error occurred */
|
||||
# define POLLHUP 0x0010 /* file descriptor was "hung up" */
|
||||
# define POLLNVAL 0x0020 /* requested events "invalid" */
|
||||
# define POLLRDNORM 0x0040
|
||||
# define POLLRDBAND 0x0080
|
||||
# define POLLWRNORM 0x0100
|
||||
# define POLLWRBAND 0x0200
|
||||
|
||||
# if !GNULIB_defined_poll_types
|
||||
|
||||
struct pollfd
|
||||
{
|
||||
int fd; /* which file descriptor to poll */
|
||||
short events; /* events we are interested in */
|
||||
short revents; /* events found on return */
|
||||
};
|
||||
|
||||
typedef unsigned long nfds_t;
|
||||
|
||||
# define GNULIB_defined_poll_types 1
|
||||
# endif
|
||||
|
||||
/* Define INFTIM only if doing so conforms to POSIX. */
|
||||
# if !defined (_POSIX_C_SOURCE) && !defined (_XOPEN_SOURCE)
|
||||
# define INFTIM (-1)
|
||||
# endif
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
#if @GNULIB_POLL@
|
||||
# if @REPLACE_POLL@
|
||||
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
|
||||
# undef poll
|
||||
# define poll rpl_poll
|
||||
# endif
|
||||
_GL_FUNCDECL_RPL (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout));
|
||||
_GL_CXXALIAS_RPL (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout));
|
||||
# else
|
||||
# if !@HAVE_POLL@
|
||||
_GL_FUNCDECL_SYS (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout));
|
||||
# endif
|
||||
_GL_CXXALIAS_SYS (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout));
|
||||
# endif
|
||||
_GL_CXXALIASWARN (poll);
|
||||
#elif defined GNULIB_POSIXCHECK
|
||||
# undef poll
|
||||
# if HAVE_RAW_DECL_POLL
|
||||
_GL_WARN_ON_USE (poll, "poll is unportable - "
|
||||
"use gnulib module poll for portability");
|
||||
# endif
|
||||
#endif
|
||||
|
||||
|
||||
#endif /* _@GUARD_PREFIX@_POLL_H */
|
||||
#endif /* _@GUARD_PREFIX@_POLL_H */
|
||||
|
|
@ -27,7 +27,7 @@
|
|||
|
||||
|
||||
# Specification in the form of a command-line invocation:
|
||||
# gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=3 --no-conditional-dependencies --libtool --macro-prefix=gl --no-vc-files accept alignof alloca-opt announce-gen autobuild bind byteswap canonicalize-lgpl ceil clock-time close connect dirfd duplocale environ extensions flock floor fpieee frexp fstat full-read full-write func gendocs getaddrinfo getlogin getpeername getsockname getsockopt git-version-gen gitlog-to-changelog gnu-web-doc-update gnupload havelib iconv_open-utf inet_ntop inet_pton isinf isnan ldexp lib-symbol-versions lib-symbol-visibility libunistring listen localcharset locale log1p maintainer-makefile malloc-gnu malloca nl_langinfo nproc open pipe-posix pipe2 putenv recv recvfrom regex rename select send sendto setenv setsockopt shutdown socket stat-time stdlib strftime striconveh string sys_stat times trunc verify vsnprintf warnings wchar
|
||||
# gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=3 --no-conditional-dependencies --libtool --macro-prefix=gl --no-vc-files accept alignof alloca-opt announce-gen autobuild bind byteswap canonicalize-lgpl ceil clock-time close connect dirfd duplocale environ extensions flock floor fpieee frexp fstat full-read full-write func gendocs getaddrinfo getlogin getpeername getsockname getsockopt git-version-gen gitlog-to-changelog gnu-web-doc-update gnupload havelib iconv_open-utf inet_ntop inet_pton isinf isnan ldexp lib-symbol-versions lib-symbol-visibility libunistring listen localcharset locale log1p maintainer-makefile malloc-gnu malloca nl_langinfo nproc open pipe-posix pipe2 poll putenv recv recvfrom regex rename select send sendto setenv setsockopt shutdown socket stat-time stdlib strftime striconveh string sys_stat times trunc verify vsnprintf warnings wchar
|
||||
|
||||
# Specification in the form of a few gnulib-tool.m4 macro invocations:
|
||||
gl_LOCAL_DIR([gnulib-local])
|
||||
|
|
@ -88,6 +88,7 @@ gl_MODULES([
|
|||
open
|
||||
pipe-posix
|
||||
pipe2
|
||||
poll
|
||||
putenv
|
||||
recv
|
||||
recvfrom
|
||||
|
|
|
|||
|
|
@ -149,6 +149,8 @@ AC_DEFUN([gl_EARLY],
|
|||
# Code from module pathmax:
|
||||
# Code from module pipe-posix:
|
||||
# Code from module pipe2:
|
||||
# Code from module poll:
|
||||
# Code from module poll-h:
|
||||
# Code from module putenv:
|
||||
# Code from module raise:
|
||||
# Code from module read:
|
||||
|
|
@ -559,6 +561,13 @@ AC_SUBST([LTALLOCA])
|
|||
gl_UNISTD_MODULE_INDICATOR([pipe])
|
||||
gl_FUNC_PIPE2
|
||||
gl_UNISTD_MODULE_INDICATOR([pipe2])
|
||||
gl_FUNC_POLL
|
||||
if test $HAVE_POLL = 0 || test $REPLACE_POLL = 1; then
|
||||
AC_LIBOBJ([poll])
|
||||
gl_PREREQ_POLL
|
||||
fi
|
||||
gl_POLL_MODULE_INDICATOR([poll])
|
||||
gl_POLL_H
|
||||
gl_FUNC_PUTENV
|
||||
if test $REPLACE_PUTENV = 1; then
|
||||
AC_LIBOBJ([putenv])
|
||||
|
|
@ -1009,6 +1018,8 @@ AC_DEFUN([gl_FILE_LIST], [
|
|||
lib/pathmax.h
|
||||
lib/pipe.c
|
||||
lib/pipe2.c
|
||||
lib/poll.c
|
||||
lib/poll.in.h
|
||||
lib/printf-args.c
|
||||
lib/printf-args.h
|
||||
lib/printf-parse.c
|
||||
|
|
@ -1200,6 +1211,8 @@ AC_DEFUN([gl_FILE_LIST], [
|
|||
m4/pathmax.m4
|
||||
m4/pipe.m4
|
||||
m4/pipe2.m4
|
||||
m4/poll.m4
|
||||
m4/poll_h.m4
|
||||
m4/printf.m4
|
||||
m4/putenv.m4
|
||||
m4/raise.m4
|
||||
|
|
|
|||
103
m4/poll.m4
Normal file
103
m4/poll.m4
Normal file
|
|
@ -0,0 +1,103 @@
|
|||
# poll.m4 serial 17
|
||||
dnl Copyright (c) 2003, 2005-2007, 2009-2013 Free Software Foundation, Inc.
|
||||
dnl This file is free software; the Free Software Foundation
|
||||
dnl gives unlimited permission to copy and/or distribute it,
|
||||
dnl with or without modifications, as long as this notice is preserved.
|
||||
|
||||
AC_DEFUN([gl_FUNC_POLL],
|
||||
[
|
||||
AC_REQUIRE([gl_POLL_H])
|
||||
AC_REQUIRE([gl_SOCKETS])
|
||||
if test $ac_cv_header_poll_h = no; then
|
||||
ac_cv_func_poll=no
|
||||
gl_cv_func_poll=no
|
||||
else
|
||||
AC_CHECK_FUNC([poll],
|
||||
[# Check whether poll() works on special files (like /dev/null) and
|
||||
# and ttys (like /dev/tty). On Mac OS X 10.4.0 and AIX 5.3, it doesn't.
|
||||
AC_RUN_IFELSE([AC_LANG_SOURCE([[
|
||||
#include <fcntl.h>
|
||||
#include <poll.h>
|
||||
int main()
|
||||
{
|
||||
int result = 0;
|
||||
struct pollfd ufd;
|
||||
/* Try /dev/null for reading. */
|
||||
ufd.fd = open ("/dev/null", O_RDONLY);
|
||||
/* If /dev/null does not exist, it's not Mac OS X nor AIX. */
|
||||
if (ufd.fd >= 0)
|
||||
{
|
||||
ufd.events = POLLIN;
|
||||
ufd.revents = 0;
|
||||
if (!(poll (&ufd, 1, 0) == 1 && ufd.revents == POLLIN))
|
||||
result |= 1;
|
||||
}
|
||||
/* Try /dev/null for writing. */
|
||||
ufd.fd = open ("/dev/null", O_WRONLY);
|
||||
/* If /dev/null does not exist, it's not Mac OS X nor AIX. */
|
||||
if (ufd.fd >= 0)
|
||||
{
|
||||
ufd.events = POLLOUT;
|
||||
ufd.revents = 0;
|
||||
if (!(poll (&ufd, 1, 0) == 1 && ufd.revents == POLLOUT))
|
||||
result |= 2;
|
||||
}
|
||||
/* Trying /dev/tty may be too environment dependent. */
|
||||
return result;
|
||||
}]])],
|
||||
[gl_cv_func_poll=yes],
|
||||
[gl_cv_func_poll=no],
|
||||
[# When cross-compiling, assume that poll() works everywhere except on
|
||||
# Mac OS X or AIX, regardless of its version.
|
||||
AC_EGREP_CPP([MacOSX], [
|
||||
#if (defined(__APPLE__) && defined(__MACH__)) || defined(_AIX)
|
||||
This is MacOSX or AIX
|
||||
#endif
|
||||
], [gl_cv_func_poll=no], [gl_cv_func_poll=yes])])])
|
||||
fi
|
||||
if test $gl_cv_func_poll != yes; then
|
||||
AC_CHECK_FUNC([poll], [ac_cv_func_poll=yes], [ac_cv_func_poll=no])
|
||||
if test $ac_cv_func_poll = no; then
|
||||
HAVE_POLL=0
|
||||
else
|
||||
REPLACE_POLL=1
|
||||
fi
|
||||
fi
|
||||
if test $HAVE_POLL = 0 || test $REPLACE_POLL = 1; then
|
||||
:
|
||||
else
|
||||
AC_DEFINE([HAVE_POLL], [1],
|
||||
[Define to 1 if you have the 'poll' function and it works.])
|
||||
fi
|
||||
|
||||
dnl Determine the needed libraries.
|
||||
LIB_POLL="$LIBSOCKET"
|
||||
if test $HAVE_POLL = 0 || test $REPLACE_POLL = 1; then
|
||||
case "$host_os" in
|
||||
mingw*)
|
||||
dnl On the MSVC platform, the function MsgWaitForMultipleObjects
|
||||
dnl (used in lib/poll.c) requires linking with -luser32. On mingw,
|
||||
dnl it is implicit.
|
||||
AC_LINK_IFELSE(
|
||||
[AC_LANG_SOURCE([[
|
||||
#define WIN32_LEAN_AND_MEAN
|
||||
#include <windows.h>
|
||||
int
|
||||
main ()
|
||||
{
|
||||
MsgWaitForMultipleObjects (0, NULL, 0, 0, 0);
|
||||
return 0;
|
||||
}]])],
|
||||
[],
|
||||
[LIB_POLL="$LIB_POLL -luser32"])
|
||||
;;
|
||||
esac
|
||||
fi
|
||||
AC_SUBST([LIB_POLL])
|
||||
])
|
||||
|
||||
# Prerequisites of lib/poll.c.
|
||||
AC_DEFUN([gl_PREREQ_POLL],
|
||||
[
|
||||
AC_CHECK_HEADERS_ONCE([sys/ioctl.h sys/filio.h])
|
||||
])
|
||||
47
m4/poll_h.m4
Normal file
47
m4/poll_h.m4
Normal file
|
|
@ -0,0 +1,47 @@
|
|||
# poll_h.m4 serial 2
|
||||
dnl Copyright (C) 2010-2013 Free Software Foundation, Inc.
|
||||
dnl This file is free software; the Free Software Foundation
|
||||
dnl gives unlimited permission to copy and/or distribute it,
|
||||
dnl with or without modifications, as long as this notice is preserved.
|
||||
|
||||
dnl Written by Bruno Haible.
|
||||
|
||||
AC_DEFUN([gl_POLL_H],
|
||||
[
|
||||
dnl Use AC_REQUIRE here, so that the default behavior below is expanded
|
||||
dnl once only, before all statements that occur in other macros.
|
||||
AC_REQUIRE([gl_POLL_H_DEFAULTS])
|
||||
|
||||
AC_CHECK_HEADERS_ONCE([poll.h])
|
||||
if test $ac_cv_header_poll_h = yes; then
|
||||
HAVE_POLL_H=1
|
||||
else
|
||||
HAVE_POLL_H=0
|
||||
fi
|
||||
AC_SUBST([HAVE_POLL_H])
|
||||
|
||||
dnl <poll.h> is always overridden, because of GNULIB_POSIXCHECK.
|
||||
gl_CHECK_NEXT_HEADERS([poll.h])
|
||||
|
||||
dnl Check for declarations of anything we want to poison if the
|
||||
dnl corresponding gnulib module is not in use.
|
||||
gl_WARN_ON_USE_PREPARE([[#include <poll.h>]],
|
||||
[poll])
|
||||
])
|
||||
|
||||
AC_DEFUN([gl_POLL_MODULE_INDICATOR],
|
||||
[
|
||||
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
|
||||
AC_REQUIRE([gl_POLL_H_DEFAULTS])
|
||||
gl_MODULE_INDICATOR_SET_VARIABLE([$1])
|
||||
dnl Define it also as a C macro, for the benefit of the unit tests.
|
||||
gl_MODULE_INDICATOR_FOR_TESTS([$1])
|
||||
])
|
||||
|
||||
AC_DEFUN([gl_POLL_H_DEFAULTS],
|
||||
[
|
||||
GNULIB_POLL=0; AC_SUBST([GNULIB_POLL])
|
||||
dnl Assume proper GNU behavior unless another module says otherwise.
|
||||
HAVE_POLL=1; AC_SUBST([HAVE_POLL])
|
||||
REPLACE_POLL=0; AC_SUBST([REPLACE_POLL])
|
||||
])
|
||||
Loading…
Add table
Add a link
Reference in a new issue