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Diffstat (limited to 'lib/win32/glib-2.20.4/glib/gpoll.c')
-rw-r--r--lib/win32/glib-2.20.4/glib/gpoll.c430
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diff --git a/lib/win32/glib-2.20.4/glib/gpoll.c b/lib/win32/glib-2.20.4/glib/gpoll.c
deleted file mode 100644
index 30e5429d03..0000000000
--- a/lib/win32/glib-2.20.4/glib/gpoll.c
+++ /dev/null
@@ -1,430 +0,0 @@
-/* GLIB - Library of useful routines for C programming
- * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
- *
- * gpoll.c: poll(2) abstraction
- * Copyright 1998 Owen Taylor
- * Copyright 2008 Red Hat, Inc.
- *
- * This library 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 of the License, or (at your option) any later version.
- *
- * This library 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 library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/*
- * Modified by the GLib Team and others 1997-2000. See the AUTHORS
- * file for a list of people on the GLib Team. See the ChangeLog
- * files for a list of changes. These files are distributed with
- * GLib at ftp://ftp.gtk.org/pub/gtk/.
- */
-
-/*
- * MT safe
- */
-
-#include "config.h"
-
-/* Uncomment the next line (and the corresponding line in gmain.c) to
- * enable debugging printouts if the environment variable
- * G_MAIN_POLL_DEBUG is set to some value.
- */
-/* #define G_MAIN_POLL_DEBUG */
-
-#ifdef _WIN32
-/* Always enable debugging printout on Windows, as it is more often
- * needed there...
- */
-#define G_MAIN_POLL_DEBUG
-#endif
-
-#include "glib.h"
-#include <sys/types.h>
-#include <time.h>
-#include <stdlib.h>
-#ifdef HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif /* HAVE_SYS_TIME_H */
-#ifdef GLIB_HAVE_SYS_POLL_H
-# include <sys/poll.h>
-# undef events /* AIX 4.1.5 & 4.3.2 define this for SVR3,4 compatibility */
-# undef revents /* AIX 4.1.5 & 4.3.2 define this for SVR3,4 compatibility */
-
-/* The poll() emulation on OS/X doesn't handle fds=NULL, nfds=0,
- * so we prefer our own poll emulation.
- */
-#if defined(_POLL_EMUL_H_) || defined(BROKEN_POLL)
-#undef HAVE_POLL
-#endif
-
-#endif /* GLIB_HAVE_SYS_POLL_H */
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-#include <errno.h>
-
-#ifdef G_OS_WIN32
-#define STRICT
-#include <windows.h>
-#endif /* G_OS_WIN32 */
-
-#include "galias.h"
-
-#ifdef G_MAIN_POLL_DEBUG
-extern gboolean _g_main_poll_debug;
-#endif
-
-#ifdef HAVE_POLL
-/* SunOS has poll, but doesn't provide a prototype. */
-# if defined (sun) && !defined (__SVR4)
-extern gint poll (struct pollfd *fds, guint nfsd, gint timeout);
-# endif /* !sun */
-
-/**
- * g_poll:
- * @fds: file descriptors to poll
- * @nfds: the number of file descriptors in @fds
- * @timeout: amount of time to wait, in milliseconds, or -1 to wait forever
- *
- * Polls @fds, as with the poll() system call, but portably. (On
- * systems that don't have poll(), it is emulated using select().)
- * This is used internally by #GMainContext, but it can be called
- * directly if you need to block until a file descriptor is ready, but
- * don't want to run the full main loop.
- *
- * Each element of @fds is a #GPollFD describing a single file
- * descriptor to poll. The %fd field indicates the file descriptor,
- * and the %events field indicates the events to poll for. On return,
- * the %revents fields will be filled with the events that actually
- * occurred.
- *
- * On POSIX systems, the file descriptors in @fds can be any sort of
- * file descriptor, but the situation is much more complicated on
- * Windows. If you need to use g_poll() in code that has to run on
- * Windows, the easiest solution is to construct all of your
- * #GPollFD<!-- -->s with g_io_channel_win32_make_pollfd().
- *
- * Return value: the number of entries in @fds whose %revents fields
- * were filled in, or 0 if the operation timed out, or -1 on error or
- * if the call was interrupted.
- *
- * Since: 2.20
- **/
-gint
-g_poll (GPollFD *fds,
- guint nfds,
- gint timeout)
-{
- return poll ((struct pollfd *)fds, nfds, timeout);
-}
-
-#else /* !HAVE_POLL */
-
-#ifdef G_OS_WIN32
-
-static int
-poll_rest (gboolean poll_msgs,
- HANDLE *handles,
- gint nhandles,
- GPollFD *fds,
- guint nfds,
- gint timeout)
-{
- DWORD ready;
- GPollFD *f;
- int recursed_result;
-
- if (poll_msgs)
- {
- /* Wait for either messages or handles
- * -> Use MsgWaitForMultipleObjectsEx
- */
- if (_g_main_poll_debug)
- g_print (" MsgWaitForMultipleObjectsEx(%d, %d)\n", nhandles, timeout);
-
- ready = MsgWaitForMultipleObjectsEx (nhandles, handles, timeout,
- QS_ALLINPUT, MWMO_ALERTABLE);
-
- if (ready == WAIT_FAILED)
- {
- gchar *emsg = g_win32_error_message (GetLastError ());
- g_warning ("MsgWaitForMultipleObjectsEx failed: %s", emsg);
- g_free (emsg);
- }
- }
- else if (nhandles == 0)
- {
- /* No handles to wait for, just the timeout */
- if (timeout == INFINITE)
- ready = WAIT_FAILED;
- else
- {
- SleepEx (timeout, TRUE);
- ready = WAIT_TIMEOUT;
- }
- }
- else
- {
- /* Wait for just handles
- * -> Use WaitForMultipleObjectsEx
- */
- if (_g_main_poll_debug)
- g_print (" WaitForMultipleObjectsEx(%d, %d)\n", nhandles, timeout);
-
- ready = WaitForMultipleObjectsEx (nhandles, handles, FALSE, timeout, TRUE);
- if (ready == WAIT_FAILED)
- {
- gchar *emsg = g_win32_error_message (GetLastError ());
- g_warning ("WaitForMultipleObjectsEx failed: %s", emsg);
- g_free (emsg);
- }
- }
-
- if (_g_main_poll_debug)
- g_print (" wait returns %ld%s\n",
- ready,
- (ready == WAIT_FAILED ? " (WAIT_FAILED)" :
- (ready == WAIT_TIMEOUT ? " (WAIT_TIMEOUT)" :
- (poll_msgs && ready == WAIT_OBJECT_0 + nhandles ? " (msg)" : ""))));
-
- if (ready == WAIT_FAILED)
- return -1;
- else if (ready == WAIT_TIMEOUT ||
- ready == WAIT_IO_COMPLETION)
- return 0;
- else if (poll_msgs && ready == WAIT_OBJECT_0 + nhandles)
- {
- for (f = fds; f < &fds[nfds]; ++f)
- if (f->fd == G_WIN32_MSG_HANDLE && f->events & G_IO_IN)
- f->revents |= G_IO_IN;
-
- /* If we have a timeout, or no handles to poll, be satisfied
- * with just noticing we have messages waiting.
- */
- if (timeout != 0 || nhandles == 0)
- return 1;
-
- /* If no timeout and handles to poll, recurse to poll them,
- * too.
- */
- recursed_result = poll_rest (FALSE, handles, nhandles, fds, nfds, 0);
- return (recursed_result == -1) ? -1 : 1 + recursed_result;
- }
- else if (ready >= WAIT_OBJECT_0 && ready < WAIT_OBJECT_0 + nhandles)
- {
- for (f = fds; f < &fds[nfds]; ++f)
- {
- if ((HANDLE) f->fd == handles[ready - WAIT_OBJECT_0])
- {
- f->revents = f->events;
- if (_g_main_poll_debug)
- g_print (" got event %p\n", (HANDLE) f->fd);
- }
- }
-
- /* If no timeout and polling several handles, recurse to poll
- * the rest of them.
- */
- if (timeout == 0 && nhandles > 1)
- {
- /* Remove the handle that fired */
- int i;
- if (ready < nhandles - 1)
- for (i = ready - WAIT_OBJECT_0 + 1; i < nhandles; i++)
- handles[i-1] = handles[i];
- nhandles--;
- recursed_result = poll_rest (FALSE, handles, nhandles, fds, nfds, 0);
- return (recursed_result == -1) ? -1 : 1 + recursed_result;
- }
- return 1;
- }
-
- return 0;
-}
-
-gint
-g_poll (GPollFD *fds,
- guint nfds,
- gint timeout)
-{
- HANDLE handles[MAXIMUM_WAIT_OBJECTS];
- gboolean poll_msgs = FALSE;
- GPollFD *f;
- gint nhandles = 0;
- int retval;
-
- if (_g_main_poll_debug)
- g_print ("g_poll: waiting for");
-
- for (f = fds; f < &fds[nfds]; ++f)
- if (f->fd == G_WIN32_MSG_HANDLE && (f->events & G_IO_IN))
- {
- if (_g_main_poll_debug && !poll_msgs)
- g_print (" MSG");
- poll_msgs = TRUE;
- }
- else if (f->fd > 0)
- {
- /* Don't add the same handle several times into the array, as
- * docs say that is not allowed, even if it actually does seem
- * to work.
- */
- gint i;
-
- for (i = 0; i < nhandles; i++)
- if (handles[i] == (HANDLE) f->fd)
- break;
-
- if (i == nhandles)
- {
- if (nhandles == MAXIMUM_WAIT_OBJECTS)
- {
- g_warning ("Too many handles to wait for!\n");
- break;
- }
- else
- {
- if (_g_main_poll_debug)
- g_print (" %p", (HANDLE) f->fd);
- handles[nhandles++] = (HANDLE) f->fd;
- }
- }
- }
-
- if (_g_main_poll_debug)
- g_print ("\n");
-
- for (f = fds; f < &fds[nfds]; ++f)
- f->revents = 0;
-
- if (timeout == -1)
- timeout = INFINITE;
-
- /* Polling for several things? */
- if (nhandles > 1 || (nhandles > 0 && poll_msgs))
- {
- /* First check if one or several of them are immediately
- * available
- */
- retval = poll_rest (poll_msgs, handles, nhandles, fds, nfds, 0);
-
- /* If not, and we have a significant timeout, poll again with
- * timeout then. Note that this will return indication for only
- * one event, or only for messages. We ignore timeouts less than
- * ten milliseconds as they are mostly pointless on Windows, the
- * MsgWaitForMultipleObjectsEx() call will timeout right away
- * anyway.
- */
- if (retval == 0 && (timeout == INFINITE || timeout >= 10))
- retval = poll_rest (poll_msgs, handles, nhandles, fds, nfds, timeout);
- }
- else
- {
- /* Just polling for one thing, so no need to check first if
- * available immediately
- */
- retval = poll_rest (poll_msgs, handles, nhandles, fds, nfds, timeout);
- }
-
- if (retval == -1)
- for (f = fds; f < &fds[nfds]; ++f)
- f->revents = 0;
-
- return retval;
-}
-
-#else /* !G_OS_WIN32 */
-
-/* The following implementation of poll() comes from the GNU C Library.
- * Copyright (C) 1994, 1996, 1997 Free Software Foundation, Inc.
- */
-
-#include <string.h> /* for bzero on BSD systems */
-
-#ifdef HAVE_SYS_SELECT_H
-#include <sys/select.h>
-#endif /* HAVE_SYS_SELECT_H */
-
-#ifdef G_OS_BEOS
-#undef NO_FD_SET
-#endif /* G_OS_BEOS */
-
-#ifndef NO_FD_SET
-# define SELECT_MASK fd_set
-#else /* !NO_FD_SET */
-# ifndef _AIX
-typedef long fd_mask;
-# endif /* _AIX */
-# ifdef _IBMR2
-# define SELECT_MASK void
-# else /* !_IBMR2 */
-# define SELECT_MASK int
-# endif /* !_IBMR2 */
-#endif /* !NO_FD_SET */
-
-gint
-g_poll (GPollFD *fds,
- guint nfds,
- gint timeout)
-{
- struct timeval tv;
- SELECT_MASK rset, wset, xset;
- GPollFD *f;
- int ready;
- int maxfd = 0;
-
- FD_ZERO (&rset);
- FD_ZERO (&wset);
- FD_ZERO (&xset);
-
- for (f = fds; f < &fds[nfds]; ++f)
- if (f->fd >= 0)
- {
- if (f->events & G_IO_IN)
- FD_SET (f->fd, &rset);
- if (f->events & G_IO_OUT)
- FD_SET (f->fd, &wset);
- if (f->events & G_IO_PRI)
- FD_SET (f->fd, &xset);
- if (f->fd > maxfd && (f->events & (G_IO_IN|G_IO_OUT|G_IO_PRI)))
- maxfd = f->fd;
- }
-
- tv.tv_sec = timeout / 1000;
- tv.tv_usec = (timeout % 1000) * 1000;
-
- ready = select (maxfd + 1, &rset, &wset, &xset,
- timeout == -1 ? NULL : &tv);
- if (ready > 0)
- for (f = fds; f < &fds[nfds]; ++f)
- {
- f->revents = 0;
- if (f->fd >= 0)
- {
- if (FD_ISSET (f->fd, &rset))
- f->revents |= G_IO_IN;
- if (FD_ISSET (f->fd, &wset))
- f->revents |= G_IO_OUT;
- if (FD_ISSET (f->fd, &xset))
- f->revents |= G_IO_PRI;
- }
- }
-
- return ready;
-}
-
-#endif /* !G_OS_WIN32 */
-
-#endif /* !HAVE_POLL */
-
-#define __G_POLL_C__
-#include "galiasdef.c"
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