mirror of
https://gitlab.gnome.org/GNOME/glib.git
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4ec06aa0c1
glib/giowin32.c:1027:1: warning: missing initializer for field 'closure_callback' of 'GSourceFuncs' {aka 'struct _GSourceFuncs'}
};
^
2252 lines
60 KiB
C
2252 lines
60 KiB
C
/* GLIB - Library of useful routines for C programming
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* giowin32.c: IO Channels for Win32.
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* Copyright 1998 Owen Taylor and Tor Lillqvist
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* Copyright 1999-2000 Tor Lillqvist and Craig Setera
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* Copyright 2001-2003 Andrew Lanoix
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GLib Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GLib Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GLib at ftp://ftp.gtk.org/pub/gtk/.
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*/
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/*
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* Bugs that are related to the code in this file:
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*
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* Bug 137968 - Sometimes a GIOFunc on Win32 is called with zero condition
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* http://bugzilla.gnome.org/show_bug.cgi?id=137968
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*
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* Bug 324234 - Using g_io_add_watch_full() to wait for connect() to return on a non-blocking socket returns prematurely
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* http://bugzilla.gnome.org/show_bug.cgi?id=324234
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*
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* Bug 331214 - g_io_channel async socket io stalls
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* http://bugzilla.gnome.org/show_bug.cgi?id=331214
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*
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* Bug 338943 - Multiple watches on the same socket
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* http://bugzilla.gnome.org/show_bug.cgi?id=338943
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*
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* Bug 357674 - 2 serious bugs in giowin32.c making glib iochannels useless
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* http://bugzilla.gnome.org/show_bug.cgi?id=357674
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*
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* Bug 425156 - GIOChannel deadlocks on a win32 socket
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* http://bugzilla.gnome.org/show_bug.cgi?id=425156
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*
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* Bug 468910 - giofunc condition=0
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* http://bugzilla.gnome.org/show_bug.cgi?id=468910
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*
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* Bug 500246 - Bug fixes for giowin32
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* http://bugzilla.gnome.org/show_bug.cgi?id=500246
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*
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* Bug 548278 - Async GETs connections are always terminated unexpectedly on windows
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* http://bugzilla.gnome.org/show_bug.cgi?id=548278
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*
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* Bug 548536 - giowin32 problem when adding and removing watches
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* http://bugzilla.gnome.org/show_bug.cgi?id=548536
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*
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* When fixing bugs related to the code in this file, either the above
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* bugs or others, make sure that the test programs attached to the
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* above bugs continue to work.
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*/
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#include "config.h"
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#include "glib.h"
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#include <stdlib.h>
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#include <winsock2.h>
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#include <windows.h>
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#include <conio.h>
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#include <fcntl.h>
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#include <io.h>
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#include <process.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include "gstdio.h"
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#include "glibintl.h"
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typedef struct _GIOWin32Channel GIOWin32Channel;
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typedef struct _GIOWin32Watch GIOWin32Watch;
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#define BUFFER_SIZE 4096
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typedef enum {
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G_IO_WIN32_WINDOWS_MESSAGES, /* Windows messages */
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G_IO_WIN32_FILE_DESC, /* Unix-like file descriptors from
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* _open() or _pipe(), except for
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* console IO. Separate thread to read
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* or write.
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*/
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G_IO_WIN32_CONSOLE, /* Console IO (usually stdin, stdout, stderr) */
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G_IO_WIN32_SOCKET /* Sockets. No separate thread. */
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} GIOWin32ChannelType;
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struct _GIOWin32Channel {
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GIOChannel channel;
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gint fd; /* Either a Unix-like file handle as provided
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* by the Microsoft C runtime, or a SOCKET
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* as provided by WinSock.
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*/
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GIOWin32ChannelType type;
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gboolean debug;
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/* Field used by G_IO_WIN32_WINDOWS_MESSAGES channels */
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HWND hwnd; /* Handle of window, or NULL */
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/* Fields used by G_IO_WIN32_FILE_DESC channels. */
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CRITICAL_SECTION mutex;
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int direction; /* 0 means we read from it,
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* 1 means we write to it.
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*/
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gboolean running; /* Is reader or writer thread
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* running. FALSE if EOF has been
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* reached by the reader thread.
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*/
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gboolean needs_close; /* If the channel has been closed while
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* the reader thread was still running.
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*/
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guint thread_id; /* If non-NULL the channel has or has
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* had a reader or writer thread.
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*/
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HANDLE data_avail_event;
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gushort revents;
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|
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/* Data is kept in a circular buffer. To be able to distinguish between
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* empty and full buffers, we cannot fill it completely, but have to
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* leave a one character gap.
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*
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* Data available is between indexes rdp and wrp-1 (modulo BUFFER_SIZE).
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*
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* Empty: wrp == rdp
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* Full: (wrp + 1) % BUFFER_SIZE == rdp
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* Partial: otherwise
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*/
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guchar *buffer; /* (Circular) buffer */
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gint wrp, rdp; /* Buffer indices for writing and reading */
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HANDLE space_avail_event;
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/* Fields used by G_IO_WIN32_SOCKET channels */
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int event_mask;
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int last_events;
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HANDLE event;
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gboolean write_would_have_blocked;
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gboolean ever_writable;
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};
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struct _GIOWin32Watch {
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GSource source;
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GPollFD pollfd;
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GIOChannel *channel;
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GIOCondition condition;
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};
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static void
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g_win32_print_access_mode (int flags)
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{
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g_print ("%s%s%s%s%s%s%s%s%s%s",
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((flags & 0x3) == _O_RDWR ? "O_RDWR" :
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((flags & 0x3) == _O_RDONLY ? "O_RDONLY" :
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((flags & 0x3) == _O_WRONLY ? "O_WRONLY" : "0"))),
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(flags & _O_APPEND ? "|O_APPEND" : ""),
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(flags & _O_RANDOM ? "|O_RANDOM" : ""),
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(flags & _O_SEQUENTIAL ? "|O_SEQUENTIAL" : ""),
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(flags & _O_TEMPORARY ? "|O_TEMPORARY" : ""),
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(flags & _O_CREAT ? "|O_CREAT" : ""),
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(flags & _O_TRUNC ? "|O_TRUNC" : ""),
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(flags & _O_EXCL ? "|O_EXCL" : ""),
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(flags & _O_TEXT ? "|O_TEXT" : ""),
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(flags & _O_BINARY ? "|O_BINARY" : ""));
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}
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static void
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g_win32_print_gioflags (GIOFlags flags)
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{
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char *bar = "";
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if (flags & G_IO_FLAG_APPEND)
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bar = "|", g_print ("APPEND");
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if (flags & G_IO_FLAG_NONBLOCK)
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g_print ("%sNONBLOCK", bar), bar = "|";
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if (flags & G_IO_FLAG_IS_READABLE)
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g_print ("%sREADABLE", bar), bar = "|";
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if (flags & G_IO_FLAG_IS_WRITABLE)
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g_print ("%sWRITABLE", bar), bar = "|";
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if (flags & G_IO_FLAG_IS_SEEKABLE)
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g_print ("%sSEEKABLE", bar), bar = "|";
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}
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static const char *
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event_mask_to_string (int mask)
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{
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char buf[100];
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int checked_bits = 0;
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char *bufp = buf;
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if (mask == 0)
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return "";
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#define BIT(n) checked_bits |= FD_##n; if (mask & FD_##n) bufp += sprintf (bufp, "%s" #n, (bufp>buf ? "|" : ""))
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BIT (READ);
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BIT (WRITE);
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BIT (OOB);
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BIT (ACCEPT);
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BIT (CONNECT);
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BIT (CLOSE);
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BIT (QOS);
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BIT (GROUP_QOS);
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BIT (ROUTING_INTERFACE_CHANGE);
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BIT (ADDRESS_LIST_CHANGE);
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#undef BIT
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if ((mask & ~checked_bits) != 0)
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bufp += sprintf (bufp, "|%#x", mask & ~checked_bits);
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return g_quark_to_string (g_quark_from_string (buf));
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}
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static const char *
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condition_to_string (GIOCondition condition)
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{
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char buf[100];
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int checked_bits = 0;
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char *bufp = buf;
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if (condition == 0)
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return "";
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#define BIT(n) checked_bits |= G_IO_##n; if (condition & G_IO_##n) bufp += sprintf (bufp, "%s" #n, (bufp>buf ? "|" : ""))
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BIT (IN);
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BIT (OUT);
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BIT (PRI);
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BIT (ERR);
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BIT (HUP);
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BIT (NVAL);
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#undef BIT
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if ((condition & ~checked_bits) != 0)
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bufp += sprintf (bufp, "|%#x", condition & ~checked_bits);
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return g_quark_to_string (g_quark_from_string (buf));
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}
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static gboolean
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g_io_win32_get_debug_flag (void)
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{
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return (g_getenv ("G_IO_WIN32_DEBUG") != NULL);
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}
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static void
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g_io_channel_win32_init (GIOWin32Channel *channel)
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{
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channel->debug = g_io_win32_get_debug_flag ();
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InitializeCriticalSection (&channel->mutex);
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channel->running = FALSE;
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channel->needs_close = FALSE;
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channel->thread_id = 0;
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channel->data_avail_event = NULL;
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channel->revents = 0;
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channel->buffer = NULL;
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channel->space_avail_event = NULL;
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channel->event_mask = 0;
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channel->last_events = 0;
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channel->event = NULL;
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channel->write_would_have_blocked = FALSE;
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channel->ever_writable = FALSE;
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}
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static void
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create_events (GIOWin32Channel *channel)
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{
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SECURITY_ATTRIBUTES sec_attrs;
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sec_attrs.nLength = sizeof (SECURITY_ATTRIBUTES);
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sec_attrs.lpSecurityDescriptor = NULL;
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sec_attrs.bInheritHandle = FALSE;
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|
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/* The data available event is manual reset, the space available event
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* is automatic reset.
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*/
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if (!(channel->data_avail_event = CreateEvent (&sec_attrs, TRUE, FALSE, NULL))
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|| !(channel->space_avail_event = CreateEvent (&sec_attrs, FALSE, FALSE, NULL)))
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{
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gchar *emsg = g_win32_error_message (GetLastError ());
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g_error ("Error creating event: %s", emsg);
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g_free (emsg);
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}
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}
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static unsigned __stdcall
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read_thread (void *parameter)
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{
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GIOWin32Channel *channel = parameter;
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guchar *buffer;
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gint nbytes;
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g_io_channel_ref ((GIOChannel *)channel);
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|
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if (channel->debug)
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g_print ("read_thread %#x: start fd=%d, data_avail=%p space_avail=%p\n",
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channel->thread_id,
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channel->fd,
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channel->data_avail_event,
|
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channel->space_avail_event);
|
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|
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channel->direction = 0;
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channel->buffer = g_malloc (BUFFER_SIZE);
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channel->rdp = channel->wrp = 0;
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channel->running = TRUE;
|
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|
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SetEvent (channel->space_avail_event);
|
|
|
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EnterCriticalSection (&channel->mutex);
|
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while (channel->running)
|
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{
|
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if (channel->debug)
|
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g_print ("read_thread %#x: rdp=%d, wrp=%d\n",
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channel->thread_id, channel->rdp, channel->wrp);
|
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if ((channel->wrp + 1) % BUFFER_SIZE == channel->rdp)
|
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{
|
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/* Buffer is full */
|
|
if (channel->debug)
|
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g_print ("read_thread %#x: resetting space_avail\n",
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channel->thread_id);
|
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ResetEvent (channel->space_avail_event);
|
|
if (channel->debug)
|
|
g_print ("read_thread %#x: waiting for space\n",
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channel->thread_id);
|
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LeaveCriticalSection (&channel->mutex);
|
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WaitForSingleObject (channel->space_avail_event, INFINITE);
|
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EnterCriticalSection (&channel->mutex);
|
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if (channel->debug)
|
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g_print ("read_thread %#x: rdp=%d, wrp=%d\n",
|
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channel->thread_id, channel->rdp, channel->wrp);
|
|
}
|
|
|
|
buffer = channel->buffer + channel->wrp;
|
|
|
|
/* Always leave at least one byte unused gap to be able to
|
|
* distinguish between the full and empty condition...
|
|
*/
|
|
nbytes = MIN ((channel->rdp + BUFFER_SIZE - channel->wrp - 1) % BUFFER_SIZE,
|
|
BUFFER_SIZE - channel->wrp);
|
|
|
|
if (channel->debug)
|
|
g_print ("read_thread %#x: calling read() for %d bytes\n",
|
|
channel->thread_id, nbytes);
|
|
|
|
LeaveCriticalSection (&channel->mutex);
|
|
|
|
nbytes = read (channel->fd, buffer, nbytes);
|
|
|
|
EnterCriticalSection (&channel->mutex);
|
|
|
|
channel->revents = G_IO_IN;
|
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if (nbytes == 0)
|
|
channel->revents |= G_IO_HUP;
|
|
else if (nbytes < 0)
|
|
channel->revents |= G_IO_ERR;
|
|
|
|
if (channel->debug)
|
|
g_print ("read_thread %#x: read() returned %d, rdp=%d, wrp=%d\n",
|
|
channel->thread_id, nbytes, channel->rdp, channel->wrp);
|
|
|
|
if (nbytes <= 0)
|
|
break;
|
|
|
|
channel->wrp = (channel->wrp + nbytes) % BUFFER_SIZE;
|
|
if (channel->debug)
|
|
g_print ("read_thread %#x: rdp=%d, wrp=%d, setting data_avail\n",
|
|
channel->thread_id, channel->rdp, channel->wrp);
|
|
SetEvent (channel->data_avail_event);
|
|
}
|
|
|
|
channel->running = FALSE;
|
|
if (channel->needs_close)
|
|
{
|
|
if (channel->debug)
|
|
g_print ("read_thread %#x: channel fd %d needs closing\n",
|
|
channel->thread_id, channel->fd);
|
|
close (channel->fd);
|
|
channel->fd = -1;
|
|
}
|
|
|
|
if (channel->debug)
|
|
g_print ("read_thread %#x: EOF, rdp=%d, wrp=%d, setting data_avail\n",
|
|
channel->thread_id, channel->rdp, channel->wrp);
|
|
SetEvent (channel->data_avail_event);
|
|
LeaveCriticalSection (&channel->mutex);
|
|
|
|
g_io_channel_unref ((GIOChannel *)channel);
|
|
|
|
/* No need to call _endthreadex(), the actual thread starter routine
|
|
* in MSVCRT (see crt/src/threadex.c:_threadstartex) calls
|
|
* _endthreadex() for us.
|
|
*/
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned __stdcall
|
|
write_thread (void *parameter)
|
|
{
|
|
GIOWin32Channel *channel = parameter;
|
|
guchar *buffer;
|
|
gint nbytes;
|
|
|
|
g_io_channel_ref ((GIOChannel *)channel);
|
|
|
|
if (channel->debug)
|
|
g_print ("write_thread %#x: start fd=%d, data_avail=%p space_avail=%p\n",
|
|
channel->thread_id,
|
|
channel->fd,
|
|
channel->data_avail_event,
|
|
channel->space_avail_event);
|
|
|
|
channel->direction = 1;
|
|
channel->buffer = g_malloc (BUFFER_SIZE);
|
|
channel->rdp = channel->wrp = 0;
|
|
channel->running = TRUE;
|
|
|
|
SetEvent (channel->space_avail_event);
|
|
|
|
/* We use the same event objects as for a reader thread, but with
|
|
* reversed meaning. So, space_avail is used if data is available
|
|
* for writing, and data_avail is used if space is available in the
|
|
* write buffer.
|
|
*/
|
|
|
|
EnterCriticalSection (&channel->mutex);
|
|
while (channel->running || channel->rdp != channel->wrp)
|
|
{
|
|
if (channel->debug)
|
|
g_print ("write_thread %#x: rdp=%d, wrp=%d\n",
|
|
channel->thread_id, channel->rdp, channel->wrp);
|
|
if (channel->wrp == channel->rdp)
|
|
{
|
|
/* Buffer is empty. */
|
|
if (channel->debug)
|
|
g_print ("write_thread %#x: resetting space_avail\n",
|
|
channel->thread_id);
|
|
ResetEvent (channel->space_avail_event);
|
|
if (channel->debug)
|
|
g_print ("write_thread %#x: waiting for data\n",
|
|
channel->thread_id);
|
|
channel->revents = G_IO_OUT;
|
|
SetEvent (channel->data_avail_event);
|
|
LeaveCriticalSection (&channel->mutex);
|
|
WaitForSingleObject (channel->space_avail_event, INFINITE);
|
|
|
|
EnterCriticalSection (&channel->mutex);
|
|
if (channel->rdp == channel->wrp)
|
|
break;
|
|
|
|
if (channel->debug)
|
|
g_print ("write_thread %#x: rdp=%d, wrp=%d\n",
|
|
channel->thread_id, channel->rdp, channel->wrp);
|
|
}
|
|
|
|
buffer = channel->buffer + channel->rdp;
|
|
if (channel->rdp < channel->wrp)
|
|
nbytes = channel->wrp - channel->rdp;
|
|
else
|
|
nbytes = BUFFER_SIZE - channel->rdp;
|
|
|
|
if (channel->debug)
|
|
g_print ("write_thread %#x: calling write() for %d bytes\n",
|
|
channel->thread_id, nbytes);
|
|
|
|
LeaveCriticalSection (&channel->mutex);
|
|
nbytes = write (channel->fd, buffer, nbytes);
|
|
EnterCriticalSection (&channel->mutex);
|
|
|
|
if (channel->debug)
|
|
g_print ("write_thread %#x: write(%i) returned %d, rdp=%d, wrp=%d\n",
|
|
channel->thread_id, channel->fd, nbytes, channel->rdp, channel->wrp);
|
|
|
|
channel->revents = 0;
|
|
if (nbytes > 0)
|
|
channel->revents |= G_IO_OUT;
|
|
else if (nbytes <= 0)
|
|
channel->revents |= G_IO_ERR;
|
|
|
|
channel->rdp = (channel->rdp + nbytes) % BUFFER_SIZE;
|
|
|
|
if (nbytes <= 0)
|
|
break;
|
|
|
|
if (channel->debug)
|
|
g_print ("write_thread: setting data_avail for thread %#x\n",
|
|
channel->thread_id);
|
|
SetEvent (channel->data_avail_event);
|
|
}
|
|
|
|
channel->running = FALSE;
|
|
if (channel->needs_close)
|
|
{
|
|
if (channel->debug)
|
|
g_print ("write_thread %#x: channel fd %d needs closing\n",
|
|
channel->thread_id, channel->fd);
|
|
close (channel->fd);
|
|
channel->fd = -1;
|
|
}
|
|
|
|
LeaveCriticalSection (&channel->mutex);
|
|
|
|
g_io_channel_unref ((GIOChannel *)channel);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
create_thread (GIOWin32Channel *channel,
|
|
GIOCondition condition,
|
|
unsigned (__stdcall *thread) (void *parameter))
|
|
{
|
|
HANDLE thread_handle;
|
|
int errsv;
|
|
|
|
thread_handle = (HANDLE) _beginthreadex (NULL, 0, thread, channel, 0,
|
|
&channel->thread_id);
|
|
errsv = errno;
|
|
if (thread_handle == 0)
|
|
g_warning ("Error creating thread: %s.",
|
|
g_strerror (errsv));
|
|
else if (!CloseHandle (thread_handle))
|
|
{
|
|
gchar *emsg = g_win32_error_message (GetLastError ());
|
|
|
|
g_warning ("Error closing thread handle: %s.", emsg);
|
|
g_free (emsg);
|
|
}
|
|
|
|
WaitForSingleObject (channel->space_avail_event, INFINITE);
|
|
}
|
|
|
|
static GIOStatus
|
|
buffer_read (GIOWin32Channel *channel,
|
|
gchar *dest,
|
|
gsize count,
|
|
gsize *bytes_read,
|
|
GError **err)
|
|
{
|
|
guint nbytes;
|
|
guint left = count;
|
|
|
|
EnterCriticalSection (&channel->mutex);
|
|
if (channel->debug)
|
|
g_print ("reading from thread %#x %" G_GSIZE_FORMAT " bytes, rdp=%d, wrp=%d\n",
|
|
channel->thread_id, count, channel->rdp, channel->wrp);
|
|
|
|
if (channel->wrp == channel->rdp)
|
|
{
|
|
LeaveCriticalSection (&channel->mutex);
|
|
if (channel->debug)
|
|
g_print ("waiting for data from thread %#x\n", channel->thread_id);
|
|
WaitForSingleObject (channel->data_avail_event, INFINITE);
|
|
if (channel->debug)
|
|
g_print ("done waiting for data from thread %#x\n", channel->thread_id);
|
|
EnterCriticalSection (&channel->mutex);
|
|
if (channel->wrp == channel->rdp && !channel->running)
|
|
{
|
|
if (channel->debug)
|
|
g_print ("wrp==rdp, !running\n");
|
|
LeaveCriticalSection (&channel->mutex);
|
|
*bytes_read = 0;
|
|
return G_IO_STATUS_EOF;
|
|
}
|
|
}
|
|
|
|
if (channel->rdp < channel->wrp)
|
|
nbytes = channel->wrp - channel->rdp;
|
|
else
|
|
nbytes = BUFFER_SIZE - channel->rdp;
|
|
LeaveCriticalSection (&channel->mutex);
|
|
nbytes = MIN (left, nbytes);
|
|
if (channel->debug)
|
|
g_print ("moving %d bytes from thread %#x\n",
|
|
nbytes, channel->thread_id);
|
|
memcpy (dest, channel->buffer + channel->rdp, nbytes);
|
|
dest += nbytes;
|
|
left -= nbytes;
|
|
EnterCriticalSection (&channel->mutex);
|
|
channel->rdp = (channel->rdp + nbytes) % BUFFER_SIZE;
|
|
if (channel->debug)
|
|
g_print ("setting space_avail for thread %#x\n", channel->thread_id);
|
|
SetEvent (channel->space_avail_event);
|
|
if (channel->debug)
|
|
g_print ("for thread %#x: rdp=%d, wrp=%d\n",
|
|
channel->thread_id, channel->rdp, channel->wrp);
|
|
if (channel->running && channel->wrp == channel->rdp)
|
|
{
|
|
if (channel->debug)
|
|
g_print ("resetting data_avail of thread %#x\n",
|
|
channel->thread_id);
|
|
ResetEvent (channel->data_avail_event);
|
|
};
|
|
LeaveCriticalSection (&channel->mutex);
|
|
|
|
/* We have no way to indicate any errors form the actual
|
|
* read() or recv() call in the reader thread. Should we have?
|
|
*/
|
|
*bytes_read = count - left;
|
|
return (*bytes_read > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF;
|
|
}
|
|
|
|
|
|
static GIOStatus
|
|
buffer_write (GIOWin32Channel *channel,
|
|
const gchar *dest,
|
|
gsize count,
|
|
gsize *bytes_written,
|
|
GError **err)
|
|
{
|
|
guint nbytes;
|
|
guint left = count;
|
|
|
|
EnterCriticalSection (&channel->mutex);
|
|
if (channel->debug)
|
|
g_print ("buffer_write: writing to thread %#x %" G_GSIZE_FORMAT " bytes, rdp=%d, wrp=%d\n",
|
|
channel->thread_id, count, channel->rdp, channel->wrp);
|
|
|
|
if ((channel->wrp + 1) % BUFFER_SIZE == channel->rdp)
|
|
{
|
|
/* Buffer is full */
|
|
if (channel->debug)
|
|
g_print ("buffer_write: tid %#x: resetting data_avail\n",
|
|
channel->thread_id);
|
|
ResetEvent (channel->data_avail_event);
|
|
if (channel->debug)
|
|
g_print ("buffer_write: tid %#x: waiting for space\n",
|
|
channel->thread_id);
|
|
LeaveCriticalSection (&channel->mutex);
|
|
WaitForSingleObject (channel->data_avail_event, INFINITE);
|
|
EnterCriticalSection (&channel->mutex);
|
|
if (channel->debug)
|
|
g_print ("buffer_write: tid %#x: rdp=%d, wrp=%d\n",
|
|
channel->thread_id, channel->rdp, channel->wrp);
|
|
}
|
|
|
|
nbytes = MIN ((channel->rdp + BUFFER_SIZE - channel->wrp - 1) % BUFFER_SIZE,
|
|
BUFFER_SIZE - channel->wrp);
|
|
|
|
LeaveCriticalSection (&channel->mutex);
|
|
nbytes = MIN (left, nbytes);
|
|
if (channel->debug)
|
|
g_print ("buffer_write: tid %#x: writing %d bytes\n",
|
|
channel->thread_id, nbytes);
|
|
memcpy (channel->buffer + channel->wrp, dest, nbytes);
|
|
dest += nbytes;
|
|
left -= nbytes;
|
|
EnterCriticalSection (&channel->mutex);
|
|
|
|
channel->wrp = (channel->wrp + nbytes) % BUFFER_SIZE;
|
|
if (channel->debug)
|
|
g_print ("buffer_write: tid %#x: rdp=%d, wrp=%d, setting space_avail\n",
|
|
channel->thread_id, channel->rdp, channel->wrp);
|
|
SetEvent (channel->space_avail_event);
|
|
|
|
if ((channel->wrp + 1) % BUFFER_SIZE == channel->rdp)
|
|
{
|
|
/* Buffer is full */
|
|
if (channel->debug)
|
|
g_print ("buffer_write: tid %#x: resetting data_avail\n",
|
|
channel->thread_id);
|
|
ResetEvent (channel->data_avail_event);
|
|
}
|
|
|
|
LeaveCriticalSection (&channel->mutex);
|
|
|
|
/* We have no way to indicate any errors form the actual
|
|
* write() call in the writer thread. Should we have?
|
|
*/
|
|
*bytes_written = count - left;
|
|
return (*bytes_written > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF;
|
|
}
|
|
|
|
|
|
static gboolean
|
|
g_io_win32_prepare (GSource *source,
|
|
gint *timeout)
|
|
{
|
|
GIOWin32Watch *watch = (GIOWin32Watch *)source;
|
|
GIOCondition buffer_condition = g_io_channel_get_buffer_condition (watch->channel);
|
|
GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
|
|
int event_mask;
|
|
|
|
*timeout = -1;
|
|
|
|
if (channel->debug)
|
|
g_print ("g_io_win32_prepare: source=%p channel=%p", source, channel);
|
|
|
|
switch (channel->type)
|
|
{
|
|
case G_IO_WIN32_WINDOWS_MESSAGES:
|
|
if (channel->debug)
|
|
g_print (" MSG");
|
|
break;
|
|
|
|
case G_IO_WIN32_CONSOLE:
|
|
if (channel->debug)
|
|
g_print (" CON");
|
|
break;
|
|
|
|
case G_IO_WIN32_FILE_DESC:
|
|
if (channel->debug)
|
|
g_print (" FD thread=%#x buffer_condition:{%s}"
|
|
"\n watch->pollfd.events:{%s} watch->pollfd.revents:{%s} channel->revents:{%s}",
|
|
channel->thread_id, condition_to_string (buffer_condition),
|
|
condition_to_string (watch->pollfd.events),
|
|
condition_to_string (watch->pollfd.revents),
|
|
condition_to_string (channel->revents));
|
|
|
|
EnterCriticalSection (&channel->mutex);
|
|
if (channel->running)
|
|
{
|
|
if (channel->direction == 0 && channel->wrp == channel->rdp)
|
|
{
|
|
if (channel->debug)
|
|
g_print ("\n setting revents=0");
|
|
channel->revents = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (channel->direction == 1
|
|
&& (channel->wrp + 1) % BUFFER_SIZE == channel->rdp)
|
|
{
|
|
if (channel->debug)
|
|
g_print ("\n setting revents=0");
|
|
channel->revents = 0;
|
|
}
|
|
}
|
|
LeaveCriticalSection (&channel->mutex);
|
|
break;
|
|
|
|
case G_IO_WIN32_SOCKET:
|
|
if (channel->debug)
|
|
g_print (" SOCK");
|
|
event_mask = 0;
|
|
if (watch->condition & G_IO_IN)
|
|
event_mask |= (FD_READ | FD_ACCEPT);
|
|
if (watch->condition & G_IO_OUT)
|
|
event_mask |= (FD_WRITE | FD_CONNECT);
|
|
event_mask |= FD_CLOSE;
|
|
|
|
if (channel->event_mask != event_mask)
|
|
{
|
|
if (channel->debug)
|
|
g_print ("\n WSAEventSelect(%d,%p,{%s})",
|
|
channel->fd, (HANDLE) watch->pollfd.fd,
|
|
event_mask_to_string (event_mask));
|
|
if (WSAEventSelect (channel->fd, (HANDLE) watch->pollfd.fd,
|
|
event_mask) == SOCKET_ERROR)
|
|
if (channel->debug)
|
|
{
|
|
gchar *emsg = g_win32_error_message (WSAGetLastError ());
|
|
|
|
g_print (" failed: %s", emsg);
|
|
g_free (emsg);
|
|
}
|
|
channel->event_mask = event_mask;
|
|
|
|
if (channel->debug)
|
|
g_print ("\n setting last_events=0");
|
|
channel->last_events = 0;
|
|
|
|
if ((event_mask & FD_WRITE) &&
|
|
channel->ever_writable &&
|
|
!channel->write_would_have_blocked)
|
|
{
|
|
if (channel->debug)
|
|
g_print (" WSASetEvent(%p)", (WSAEVENT) watch->pollfd.fd);
|
|
WSASetEvent ((WSAEVENT) watch->pollfd.fd);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached ();
|
|
g_abort ();
|
|
}
|
|
if (channel->debug)
|
|
g_print ("\n");
|
|
|
|
return ((watch->condition & buffer_condition) == watch->condition);
|
|
}
|
|
|
|
static gboolean
|
|
g_io_win32_check (GSource *source)
|
|
{
|
|
MSG msg;
|
|
GIOWin32Watch *watch = (GIOWin32Watch *)source;
|
|
GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
|
|
GIOCondition buffer_condition = g_io_channel_get_buffer_condition (watch->channel);
|
|
WSANETWORKEVENTS events;
|
|
|
|
if (channel->debug)
|
|
g_print ("g_io_win32_check: source=%p channel=%p", source, channel);
|
|
|
|
switch (channel->type)
|
|
{
|
|
case G_IO_WIN32_WINDOWS_MESSAGES:
|
|
if (channel->debug)
|
|
g_print (" MSG\n");
|
|
return (PeekMessage (&msg, channel->hwnd, 0, 0, PM_NOREMOVE));
|
|
|
|
case G_IO_WIN32_FILE_DESC:
|
|
if (channel->debug)
|
|
g_print (" FD thread=%#x buffer_condition=%s\n"
|
|
" watch->pollfd.events={%s} watch->pollfd.revents={%s} channel->revents={%s}\n",
|
|
channel->thread_id, condition_to_string (buffer_condition),
|
|
condition_to_string (watch->pollfd.events),
|
|
condition_to_string (watch->pollfd.revents),
|
|
condition_to_string (channel->revents));
|
|
|
|
watch->pollfd.revents = (watch->pollfd.events & channel->revents);
|
|
|
|
return ((watch->pollfd.revents | buffer_condition) & watch->condition);
|
|
|
|
case G_IO_WIN32_CONSOLE:
|
|
if (channel->debug)
|
|
g_print (" CON\n");
|
|
if (watch->channel->is_writeable)
|
|
return TRUE;
|
|
else if (watch->channel->is_readable)
|
|
{
|
|
INPUT_RECORD buffer;
|
|
DWORD n;
|
|
if (PeekConsoleInput ((HANDLE) watch->pollfd.fd, &buffer, 1, &n) &&
|
|
n == 1)
|
|
{
|
|
/* _kbhit() does quite complex processing to find out
|
|
* whether at least one of the key events pending corresponds
|
|
* to a "real" character that can be read.
|
|
*/
|
|
if (_kbhit ())
|
|
return TRUE;
|
|
|
|
/* Discard all other kinds of events */
|
|
ReadConsoleInput ((HANDLE) watch->pollfd.fd, &buffer, 1, &n);
|
|
}
|
|
}
|
|
return FALSE;
|
|
|
|
case G_IO_WIN32_SOCKET:
|
|
if (channel->debug)
|
|
g_print (" SOCK");
|
|
if (channel->last_events & FD_WRITE)
|
|
{
|
|
if (channel->debug)
|
|
g_print (" sock=%d event=%p last_events has FD_WRITE",
|
|
channel->fd, (HANDLE) watch->pollfd.fd);
|
|
}
|
|
else
|
|
{
|
|
WSAEnumNetworkEvents (channel->fd, 0, &events);
|
|
|
|
if (channel->debug)
|
|
g_print ("\n revents={%s} condition={%s}"
|
|
"\n WSAEnumNetworkEvents(%d,0) sets events={%s}",
|
|
condition_to_string (watch->pollfd.revents),
|
|
condition_to_string (watch->condition),
|
|
channel->fd,
|
|
event_mask_to_string (events.lNetworkEvents));
|
|
|
|
if (watch->pollfd.revents != 0 &&
|
|
events.lNetworkEvents == 0 &&
|
|
!(channel->event_mask & FD_WRITE))
|
|
{
|
|
channel->event_mask = 0;
|
|
if (channel->debug)
|
|
g_print ("\n WSAEventSelect(%d,%p,{})",
|
|
channel->fd, (HANDLE) watch->pollfd.fd);
|
|
WSAEventSelect (channel->fd, (HANDLE) watch->pollfd.fd, 0);
|
|
if (channel->debug)
|
|
g_print (" ResetEvent(%p)",
|
|
(HANDLE) watch->pollfd.fd);
|
|
ResetEvent ((HANDLE) watch->pollfd.fd);
|
|
}
|
|
else if (events.lNetworkEvents & FD_WRITE)
|
|
channel->ever_writable = TRUE;
|
|
channel->last_events = events.lNetworkEvents;
|
|
}
|
|
|
|
watch->pollfd.revents = 0;
|
|
if (channel->last_events & (FD_READ | FD_ACCEPT))
|
|
watch->pollfd.revents |= G_IO_IN;
|
|
|
|
if (channel->last_events & FD_WRITE)
|
|
watch->pollfd.revents |= G_IO_OUT;
|
|
else
|
|
{
|
|
/* We have called WSAEnumNetworkEvents() above but it didn't
|
|
* set FD_WRITE.
|
|
*/
|
|
if (events.lNetworkEvents & FD_CONNECT)
|
|
{
|
|
if (events.iErrorCode[FD_CONNECT_BIT] == 0)
|
|
watch->pollfd.revents |= G_IO_OUT;
|
|
else
|
|
watch->pollfd.revents |= (G_IO_HUP | G_IO_ERR);
|
|
}
|
|
if (watch->pollfd.revents == 0 && (channel->last_events & (FD_CLOSE)))
|
|
watch->pollfd.revents |= G_IO_HUP;
|
|
}
|
|
|
|
/* Regardless of WSAEnumNetworkEvents() result, if watching for
|
|
* writability, and if we have ever got a FD_WRITE event, and
|
|
* unless last write would have blocked, set G_IO_OUT. But never
|
|
* set both G_IO_OUT and G_IO_HUP.
|
|
*/
|
|
if (!(watch->pollfd.revents & G_IO_HUP) &&
|
|
channel->ever_writable &&
|
|
!channel->write_would_have_blocked &&
|
|
(channel->event_mask & FD_WRITE))
|
|
watch->pollfd.revents |= G_IO_OUT;
|
|
|
|
if (channel->debug)
|
|
g_print ("\n revents={%s} retval={%s}\n",
|
|
condition_to_string (watch->pollfd.revents),
|
|
condition_to_string ((watch->pollfd.revents | buffer_condition) & watch->condition));
|
|
|
|
return ((watch->pollfd.revents | buffer_condition) & watch->condition);
|
|
|
|
default:
|
|
g_assert_not_reached ();
|
|
g_abort ();
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
g_io_win32_dispatch (GSource *source,
|
|
GSourceFunc callback,
|
|
gpointer user_data)
|
|
{
|
|
GIOFunc func = (GIOFunc)callback;
|
|
GIOWin32Watch *watch = (GIOWin32Watch *)source;
|
|
GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
|
|
GIOCondition buffer_condition = g_io_channel_get_buffer_condition (watch->channel);
|
|
|
|
if (!func)
|
|
{
|
|
g_warning ("IO Watch dispatched without callback. "
|
|
"You must call g_source_connect().");
|
|
return FALSE;
|
|
}
|
|
|
|
if (channel->debug)
|
|
g_print ("g_io_win32_dispatch: pollfd.revents=%s condition=%s result=%s\n",
|
|
condition_to_string (watch->pollfd.revents),
|
|
condition_to_string (watch->condition),
|
|
condition_to_string ((watch->pollfd.revents | buffer_condition) & watch->condition));
|
|
|
|
return (*func) (watch->channel,
|
|
(watch->pollfd.revents | buffer_condition) & watch->condition,
|
|
user_data);
|
|
}
|
|
|
|
static void
|
|
g_io_win32_finalize (GSource *source)
|
|
{
|
|
GIOWin32Watch *watch = (GIOWin32Watch *)source;
|
|
GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
|
|
|
|
if (channel->debug)
|
|
g_print ("g_io_win32_finalize: source=%p channel=%p", source, channel);
|
|
|
|
switch (channel->type)
|
|
{
|
|
case G_IO_WIN32_WINDOWS_MESSAGES:
|
|
if (channel->debug)
|
|
g_print (" MSG");
|
|
break;
|
|
|
|
case G_IO_WIN32_CONSOLE:
|
|
if (channel->debug)
|
|
g_print (" CON");
|
|
break;
|
|
|
|
case G_IO_WIN32_FILE_DESC:
|
|
if (channel->debug)
|
|
g_print (" FD thread=%#x", channel->thread_id);
|
|
break;
|
|
|
|
case G_IO_WIN32_SOCKET:
|
|
if (channel->debug)
|
|
g_print (" SOCK sock=%d", channel->fd);
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached ();
|
|
g_abort ();
|
|
}
|
|
if (channel->debug)
|
|
g_print ("\n");
|
|
g_io_channel_unref (watch->channel);
|
|
}
|
|
|
|
GSourceFuncs g_io_watch_funcs = {
|
|
g_io_win32_prepare,
|
|
g_io_win32_check,
|
|
g_io_win32_dispatch,
|
|
g_io_win32_finalize,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
static GIOStatus
|
|
g_io_win32_msg_read (GIOChannel *channel,
|
|
gchar *buf,
|
|
gsize count,
|
|
gsize *bytes_read,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
MSG msg; /* In case of alignment problems */
|
|
|
|
*bytes_read = 0;
|
|
|
|
if (count < sizeof (MSG))
|
|
{
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR, G_IO_CHANNEL_ERROR_INVAL,
|
|
"Incorrect message size"); /* Informative enough error message? */
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_win32_msg_read: channel=%p hwnd=%p\n",
|
|
channel, win32_channel->hwnd);
|
|
if (!PeekMessage (&msg, win32_channel->hwnd, 0, 0, PM_REMOVE))
|
|
return G_IO_STATUS_AGAIN;
|
|
|
|
memmove (buf, &msg, sizeof (MSG));
|
|
*bytes_read = sizeof (MSG);
|
|
|
|
return G_IO_STATUS_NORMAL;
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_msg_write (GIOChannel *channel,
|
|
const gchar *buf,
|
|
gsize count,
|
|
gsize *bytes_written,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
MSG msg;
|
|
|
|
*bytes_written = 0;
|
|
|
|
if (count != sizeof (MSG))
|
|
{
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR, G_IO_CHANNEL_ERROR_INVAL,
|
|
"Incorrect message size"); /* Informative enough error message? */
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
|
|
/* In case of alignment problems */
|
|
memmove (&msg, buf, sizeof (MSG));
|
|
if (!PostMessage (win32_channel->hwnd, msg.message, msg.wParam, msg.lParam))
|
|
{
|
|
gchar *emsg = g_win32_error_message (GetLastError ());
|
|
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR, G_IO_CHANNEL_ERROR_FAILED, emsg);
|
|
g_free (emsg);
|
|
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
|
|
*bytes_written = sizeof (MSG);
|
|
|
|
return G_IO_STATUS_NORMAL;
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_msg_close (GIOChannel *channel,
|
|
GError **err)
|
|
{
|
|
/* Nothing to be done. Or should we set hwnd to some invalid value? */
|
|
|
|
return G_IO_STATUS_NORMAL;
|
|
}
|
|
|
|
static void
|
|
g_io_win32_free (GIOChannel *channel)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_win32_free channel=%p fd=%d\n", channel, win32_channel->fd);
|
|
|
|
DeleteCriticalSection (&win32_channel->mutex);
|
|
|
|
if (win32_channel->data_avail_event)
|
|
if (!CloseHandle (win32_channel->data_avail_event))
|
|
if (win32_channel->debug)
|
|
{
|
|
gchar *emsg = g_win32_error_message (GetLastError ());
|
|
|
|
g_print (" CloseHandle(%p) failed: %s\n",
|
|
win32_channel->data_avail_event, emsg);
|
|
g_free (emsg);
|
|
}
|
|
|
|
g_free (win32_channel->buffer);
|
|
|
|
if (win32_channel->space_avail_event)
|
|
if (!CloseHandle (win32_channel->space_avail_event))
|
|
if (win32_channel->debug)
|
|
{
|
|
gchar *emsg = g_win32_error_message (GetLastError ());
|
|
|
|
g_print (" CloseHandle(%p) failed: %s\n",
|
|
win32_channel->space_avail_event, emsg);
|
|
g_free (emsg);
|
|
}
|
|
|
|
if (win32_channel->type == G_IO_WIN32_SOCKET &&
|
|
win32_channel->fd != -1)
|
|
if (WSAEventSelect (win32_channel->fd, NULL, 0) == SOCKET_ERROR)
|
|
if (win32_channel->debug)
|
|
{
|
|
gchar *emsg = g_win32_error_message (WSAGetLastError ());
|
|
|
|
g_print (" WSAEventSelect(%d,NULL,{}) failed: %s\n",
|
|
win32_channel->fd, emsg);
|
|
g_free (emsg);
|
|
}
|
|
|
|
if (win32_channel->event)
|
|
if (!WSACloseEvent (win32_channel->event))
|
|
if (win32_channel->debug)
|
|
{
|
|
gchar *emsg = g_win32_error_message (WSAGetLastError ());
|
|
|
|
g_print (" WSACloseEvent(%p) failed: %s\n",
|
|
win32_channel->event, emsg);
|
|
g_free (emsg);
|
|
}
|
|
|
|
g_free (win32_channel);
|
|
}
|
|
|
|
static GSource *
|
|
g_io_win32_msg_create_watch (GIOChannel *channel,
|
|
GIOCondition condition)
|
|
{
|
|
GIOWin32Watch *watch;
|
|
GSource *source;
|
|
|
|
source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch));
|
|
g_source_set_static_name (source, "GIOChannel (Win32)");
|
|
watch = (GIOWin32Watch *)source;
|
|
|
|
watch->channel = channel;
|
|
g_io_channel_ref (channel);
|
|
|
|
watch->condition = condition;
|
|
|
|
watch->pollfd.fd = (gintptr) G_WIN32_MSG_HANDLE;
|
|
watch->pollfd.events = condition;
|
|
|
|
g_source_add_poll (source, &watch->pollfd);
|
|
|
|
return source;
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_fd_and_console_read (GIOChannel *channel,
|
|
gchar *buf,
|
|
gsize count,
|
|
gsize *bytes_read,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
gint result;
|
|
int errsv;
|
|
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_win32_fd_read: fd=%d count=%" G_GSIZE_FORMAT "\n",
|
|
win32_channel->fd, count);
|
|
|
|
if (win32_channel->thread_id)
|
|
{
|
|
return buffer_read (win32_channel, buf, count, bytes_read, err);
|
|
}
|
|
|
|
result = read (win32_channel->fd, buf, count);
|
|
errsv = errno;
|
|
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_win32_fd_read: read() => %d\n", result);
|
|
|
|
if (result < 0)
|
|
{
|
|
*bytes_read = 0;
|
|
|
|
switch (errsv)
|
|
{
|
|
#ifdef EAGAIN
|
|
case EAGAIN:
|
|
return G_IO_STATUS_AGAIN;
|
|
#endif
|
|
default:
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR,
|
|
g_io_channel_error_from_errno (errsv),
|
|
g_strerror (errsv));
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
}
|
|
|
|
*bytes_read = result;
|
|
|
|
return (result > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF;
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_fd_and_console_write (GIOChannel *channel,
|
|
const gchar *buf,
|
|
gsize count,
|
|
gsize *bytes_written,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
gint result;
|
|
int errsv;
|
|
|
|
if (win32_channel->thread_id)
|
|
{
|
|
return buffer_write (win32_channel, buf, count, bytes_written, err);
|
|
}
|
|
|
|
result = write (win32_channel->fd, buf, count);
|
|
errsv = errno;
|
|
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_win32_fd_write: fd=%d count=%" G_GSIZE_FORMAT " => %d\n",
|
|
win32_channel->fd, count, result);
|
|
|
|
if (result < 0)
|
|
{
|
|
*bytes_written = 0;
|
|
|
|
switch (errsv)
|
|
{
|
|
#ifdef EAGAIN
|
|
case EAGAIN:
|
|
return G_IO_STATUS_AGAIN;
|
|
#endif
|
|
default:
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR,
|
|
g_io_channel_error_from_errno (errsv),
|
|
g_strerror (errsv));
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
}
|
|
|
|
*bytes_written = result;
|
|
|
|
return G_IO_STATUS_NORMAL;
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_fd_seek (GIOChannel *channel,
|
|
gint64 offset,
|
|
GSeekType type,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
int whence, errsv;
|
|
off_t tmp_offset;
|
|
off_t result;
|
|
|
|
switch (type)
|
|
{
|
|
case G_SEEK_SET:
|
|
whence = SEEK_SET;
|
|
break;
|
|
case G_SEEK_CUR:
|
|
whence = SEEK_CUR;
|
|
break;
|
|
case G_SEEK_END:
|
|
whence = SEEK_END;
|
|
break;
|
|
default:
|
|
whence = -1; /* Keep the compiler quiet */
|
|
g_assert_not_reached ();
|
|
g_abort ();
|
|
}
|
|
|
|
tmp_offset = offset;
|
|
if (tmp_offset != offset)
|
|
{
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR,
|
|
g_io_channel_error_from_errno (EINVAL),
|
|
g_strerror (EINVAL));
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
|
|
result = lseek (win32_channel->fd, tmp_offset, whence);
|
|
errsv = errno;
|
|
|
|
if (result < 0)
|
|
{
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR,
|
|
g_io_channel_error_from_errno (errsv),
|
|
g_strerror (errsv));
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
|
|
return G_IO_STATUS_NORMAL;
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_fd_close (GIOChannel *channel,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_win32_fd_close: thread=%#x: fd=%d\n",
|
|
win32_channel->thread_id,
|
|
win32_channel->fd);
|
|
EnterCriticalSection (&win32_channel->mutex);
|
|
if (win32_channel->running)
|
|
{
|
|
if (win32_channel->debug)
|
|
g_print ("thread %#x: running, marking fd %d for later close\n",
|
|
win32_channel->thread_id, win32_channel->fd);
|
|
win32_channel->running = FALSE;
|
|
win32_channel->needs_close = TRUE;
|
|
if (win32_channel->direction == 0)
|
|
SetEvent (win32_channel->data_avail_event);
|
|
else
|
|
SetEvent (win32_channel->space_avail_event);
|
|
}
|
|
else
|
|
{
|
|
if (win32_channel->debug)
|
|
g_print ("closing fd %d\n", win32_channel->fd);
|
|
close (win32_channel->fd);
|
|
if (win32_channel->debug)
|
|
g_print ("closed fd %d, setting to -1\n",
|
|
win32_channel->fd);
|
|
win32_channel->fd = -1;
|
|
}
|
|
LeaveCriticalSection (&win32_channel->mutex);
|
|
|
|
/* FIXME error detection? */
|
|
|
|
return G_IO_STATUS_NORMAL;
|
|
}
|
|
|
|
static GSource *
|
|
g_io_win32_fd_create_watch (GIOChannel *channel,
|
|
GIOCondition condition)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
GSource *source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch));
|
|
GIOWin32Watch *watch = (GIOWin32Watch *)source;
|
|
|
|
watch->channel = channel;
|
|
g_io_channel_ref (channel);
|
|
|
|
watch->condition = condition;
|
|
|
|
if (win32_channel->data_avail_event == NULL)
|
|
create_events (win32_channel);
|
|
|
|
watch->pollfd.fd = (gintptr) win32_channel->data_avail_event;
|
|
watch->pollfd.events = condition;
|
|
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_win32_fd_create_watch: channel=%p fd=%d condition={%s} event=%p\n",
|
|
channel, win32_channel->fd,
|
|
condition_to_string (condition), (HANDLE) watch->pollfd.fd);
|
|
|
|
EnterCriticalSection (&win32_channel->mutex);
|
|
if (win32_channel->thread_id == 0)
|
|
{
|
|
if (condition & G_IO_IN)
|
|
create_thread (win32_channel, condition, read_thread);
|
|
else if (condition & G_IO_OUT)
|
|
create_thread (win32_channel, condition, write_thread);
|
|
}
|
|
|
|
g_source_add_poll (source, &watch->pollfd);
|
|
LeaveCriticalSection (&win32_channel->mutex);
|
|
|
|
return source;
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_console_close (GIOChannel *channel,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
|
|
if (close (win32_channel->fd) < 0)
|
|
{
|
|
int errsv = errno;
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR,
|
|
g_io_channel_error_from_errno (errsv),
|
|
g_strerror (errsv));
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
|
|
return G_IO_STATUS_NORMAL;
|
|
}
|
|
|
|
static GSource *
|
|
g_io_win32_console_create_watch (GIOChannel *channel,
|
|
GIOCondition condition)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
GSource *source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch));
|
|
GIOWin32Watch *watch = (GIOWin32Watch *)source;
|
|
|
|
watch->channel = channel;
|
|
g_io_channel_ref (channel);
|
|
|
|
watch->condition = condition;
|
|
|
|
watch->pollfd.fd = _get_osfhandle (win32_channel->fd);
|
|
watch->pollfd.events = condition;
|
|
|
|
g_source_add_poll (source, &watch->pollfd);
|
|
|
|
return source;
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_sock_read (GIOChannel *channel,
|
|
gchar *buf,
|
|
gsize count,
|
|
gsize *bytes_read,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
gint result;
|
|
GIOChannelError error;
|
|
int winsock_error;
|
|
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_win32_sock_read: channel=%p sock=%d count=%" G_GSIZE_FORMAT,
|
|
channel, win32_channel->fd, count);
|
|
|
|
result = recv (win32_channel->fd, buf, count, 0);
|
|
if (result == SOCKET_ERROR)
|
|
winsock_error = WSAGetLastError ();
|
|
|
|
if (win32_channel->debug)
|
|
g_print (" recv=%d", result);
|
|
|
|
if (result == SOCKET_ERROR)
|
|
{
|
|
gchar *emsg = g_win32_error_message (winsock_error);
|
|
|
|
if (win32_channel->debug)
|
|
g_print (" %s\n", emsg);
|
|
|
|
*bytes_read = 0;
|
|
|
|
switch (winsock_error)
|
|
{
|
|
case WSAEINVAL:
|
|
error = G_IO_CHANNEL_ERROR_INVAL;
|
|
break;
|
|
case WSAEWOULDBLOCK:
|
|
g_free (emsg);
|
|
return G_IO_STATUS_AGAIN;
|
|
default:
|
|
error = G_IO_CHANNEL_ERROR_FAILED;
|
|
break;
|
|
}
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR, error, emsg);
|
|
g_free (emsg);
|
|
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
else
|
|
{
|
|
if (win32_channel->debug)
|
|
g_print ("\n");
|
|
*bytes_read = result;
|
|
if (result == 0)
|
|
return G_IO_STATUS_EOF;
|
|
else
|
|
return G_IO_STATUS_NORMAL;
|
|
}
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_sock_write (GIOChannel *channel,
|
|
const gchar *buf,
|
|
gsize count,
|
|
gsize *bytes_written,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
gint result;
|
|
GIOChannelError error;
|
|
int winsock_error;
|
|
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_win32_sock_write: channel=%p sock=%d count=%" G_GSIZE_FORMAT,
|
|
channel, win32_channel->fd, count);
|
|
|
|
result = send (win32_channel->fd, buf, count, 0);
|
|
if (result == SOCKET_ERROR)
|
|
winsock_error = WSAGetLastError ();
|
|
|
|
if (win32_channel->debug)
|
|
g_print (" send=%d", result);
|
|
|
|
if (result == SOCKET_ERROR)
|
|
{
|
|
gchar *emsg = g_win32_error_message (winsock_error);
|
|
|
|
if (win32_channel->debug)
|
|
g_print (" %s\n", emsg);
|
|
|
|
*bytes_written = 0;
|
|
|
|
switch (winsock_error)
|
|
{
|
|
case WSAEINVAL:
|
|
error = G_IO_CHANNEL_ERROR_INVAL;
|
|
break;
|
|
case WSAEWOULDBLOCK:
|
|
win32_channel->write_would_have_blocked = TRUE;
|
|
win32_channel->last_events = 0;
|
|
g_free (emsg);
|
|
return G_IO_STATUS_AGAIN;
|
|
default:
|
|
error = G_IO_CHANNEL_ERROR_FAILED;
|
|
break;
|
|
}
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR, error, emsg);
|
|
g_free (emsg);
|
|
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
else
|
|
{
|
|
if (win32_channel->debug)
|
|
g_print ("\n");
|
|
*bytes_written = result;
|
|
win32_channel->write_would_have_blocked = FALSE;
|
|
|
|
return G_IO_STATUS_NORMAL;
|
|
}
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_sock_close (GIOChannel *channel,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
|
|
if (win32_channel->fd != -1)
|
|
{
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_win32_sock_close: channel=%p sock=%d\n",
|
|
channel, win32_channel->fd);
|
|
|
|
closesocket (win32_channel->fd);
|
|
win32_channel->fd = -1;
|
|
}
|
|
|
|
/* FIXME error detection? */
|
|
|
|
return G_IO_STATUS_NORMAL;
|
|
}
|
|
|
|
static GSource *
|
|
g_io_win32_sock_create_watch (GIOChannel *channel,
|
|
GIOCondition condition)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
GSource *source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch));
|
|
GIOWin32Watch *watch = (GIOWin32Watch *)source;
|
|
|
|
watch->channel = channel;
|
|
g_io_channel_ref (channel);
|
|
|
|
watch->condition = condition;
|
|
|
|
if (win32_channel->event == 0)
|
|
win32_channel->event = WSACreateEvent ();
|
|
|
|
watch->pollfd.fd = (gintptr) win32_channel->event;
|
|
watch->pollfd.events = condition;
|
|
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_win32_sock_create_watch: channel=%p sock=%d event=%p condition={%s}\n",
|
|
channel, win32_channel->fd, (HANDLE) watch->pollfd.fd,
|
|
condition_to_string (watch->condition));
|
|
|
|
g_source_add_poll (source, &watch->pollfd);
|
|
|
|
return source;
|
|
}
|
|
|
|
GIOChannel *
|
|
g_io_channel_new_file (const gchar *filename,
|
|
const gchar *mode,
|
|
GError **error)
|
|
{
|
|
int fid, flags, pmode;
|
|
GIOChannel *channel;
|
|
|
|
enum { /* Cheesy hack */
|
|
MODE_R = 1 << 0,
|
|
MODE_W = 1 << 1,
|
|
MODE_A = 1 << 2,
|
|
MODE_PLUS = 1 << 3,
|
|
};
|
|
int mode_num, errsv;
|
|
|
|
g_return_val_if_fail (filename != NULL, NULL);
|
|
g_return_val_if_fail (mode != NULL, NULL);
|
|
g_return_val_if_fail ((error == NULL) || (*error == NULL), NULL);
|
|
|
|
switch (mode[0])
|
|
{
|
|
case 'r':
|
|
mode_num = MODE_R;
|
|
break;
|
|
case 'w':
|
|
mode_num = MODE_W;
|
|
break;
|
|
case 'a':
|
|
mode_num = MODE_A;
|
|
break;
|
|
default:
|
|
g_warning ("Invalid GIOFileMode %s.", mode);
|
|
return NULL;
|
|
}
|
|
|
|
switch (mode[1])
|
|
{
|
|
case '\0':
|
|
break;
|
|
case '+':
|
|
if (mode[2] == '\0')
|
|
{
|
|
mode_num |= MODE_PLUS;
|
|
break;
|
|
}
|
|
/* Fall through */
|
|
default:
|
|
g_warning ("Invalid GIOFileMode %s.", mode);
|
|
return NULL;
|
|
}
|
|
|
|
switch (mode_num)
|
|
{
|
|
case MODE_R:
|
|
flags = O_RDONLY;
|
|
pmode = _S_IREAD;
|
|
break;
|
|
case MODE_W:
|
|
flags = O_WRONLY | O_TRUNC | O_CREAT;
|
|
pmode = _S_IWRITE;
|
|
break;
|
|
case MODE_A:
|
|
flags = O_WRONLY | O_APPEND | O_CREAT;
|
|
pmode = _S_IWRITE;
|
|
break;
|
|
case MODE_R | MODE_PLUS:
|
|
flags = O_RDWR;
|
|
pmode = _S_IREAD | _S_IWRITE;
|
|
break;
|
|
case MODE_W | MODE_PLUS:
|
|
flags = O_RDWR | O_TRUNC | O_CREAT;
|
|
pmode = _S_IREAD | _S_IWRITE;
|
|
break;
|
|
case MODE_A | MODE_PLUS:
|
|
flags = O_RDWR | O_APPEND | O_CREAT;
|
|
pmode = _S_IREAD | _S_IWRITE;
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
g_abort ();
|
|
}
|
|
|
|
/* always open 'untranslated' */
|
|
fid = g_open (filename, flags | _O_BINARY, pmode);
|
|
errsv = errno;
|
|
|
|
if (g_io_win32_get_debug_flag ())
|
|
{
|
|
g_print ("g_io_channel_win32_new_file: open(\"%s\",", filename);
|
|
g_win32_print_access_mode (flags|_O_BINARY);
|
|
g_print (",%#o)=%d\n", pmode, fid);
|
|
}
|
|
|
|
if (fid < 0)
|
|
{
|
|
g_set_error_literal (error, G_FILE_ERROR,
|
|
g_file_error_from_errno (errsv),
|
|
g_strerror (errsv));
|
|
return (GIOChannel *)NULL;
|
|
}
|
|
|
|
channel = g_io_channel_win32_new_fd (fid);
|
|
|
|
/* XXX: move this to g_io_channel_win32_new_fd () */
|
|
channel->close_on_unref = TRUE;
|
|
channel->is_seekable = TRUE;
|
|
|
|
/* g_io_channel_win32_new_fd sets is_readable and is_writeable to
|
|
* correspond to actual readability/writeability. Set to FALSE those
|
|
* that mode doesn't allow
|
|
*/
|
|
switch (mode_num)
|
|
{
|
|
case MODE_R:
|
|
channel->is_writeable = FALSE;
|
|
break;
|
|
case MODE_W:
|
|
case MODE_A:
|
|
channel->is_readable = FALSE;
|
|
break;
|
|
case MODE_R | MODE_PLUS:
|
|
case MODE_W | MODE_PLUS:
|
|
case MODE_A | MODE_PLUS:
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
g_abort ();
|
|
}
|
|
|
|
return channel;
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_unimpl_set_flags (GIOChannel *channel,
|
|
GIOFlags flags,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
|
|
if (win32_channel->debug)
|
|
{
|
|
g_print ("g_io_win32_unimpl_set_flags: ");
|
|
g_win32_print_gioflags (flags);
|
|
g_print ("\n");
|
|
}
|
|
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR,
|
|
G_IO_CHANNEL_ERROR_FAILED,
|
|
"Not implemented on Win32");
|
|
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
|
|
static GIOFlags
|
|
g_io_win32_fd_get_flags_internal (GIOChannel *channel,
|
|
struct _stati64 *st)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
|
|
gchar c;
|
|
DWORD count;
|
|
|
|
if (st->st_mode & _S_IFIFO)
|
|
{
|
|
channel->is_readable =
|
|
(PeekNamedPipe ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL, NULL) != 0) || GetLastError () == ERROR_BROKEN_PIPE;
|
|
channel->is_writeable =
|
|
(WriteFile ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL) != 0);
|
|
channel->is_seekable = FALSE;
|
|
}
|
|
else
|
|
{
|
|
channel->is_readable =
|
|
(ReadFile ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL) != 0);
|
|
channel->is_writeable =
|
|
(WriteFile ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL) != 0);
|
|
channel->is_seekable = TRUE;
|
|
}
|
|
|
|
/* XXX: G_IO_FLAG_APPEND */
|
|
/* XXX: G_IO_FLAG_NONBLOCK */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static GIOFlags
|
|
g_io_win32_fd_get_flags (GIOChannel *channel)
|
|
{
|
|
struct _stati64 st;
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
|
|
g_return_val_if_fail (win32_channel != NULL, 0);
|
|
g_return_val_if_fail (win32_channel->type == G_IO_WIN32_FILE_DESC, 0);
|
|
|
|
if (0 == _fstati64 (win32_channel->fd, &st))
|
|
return g_io_win32_fd_get_flags_internal (channel, &st);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static GIOFlags
|
|
g_io_win32_console_get_flags_internal (GIOChannel *channel)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
|
|
HANDLE handle = (HANDLE) _get_osfhandle (win32_channel->fd);
|
|
gchar c;
|
|
DWORD count;
|
|
INPUT_RECORD record;
|
|
|
|
channel->is_readable = PeekConsoleInput (handle, &record, 1, &count);
|
|
channel->is_writeable = WriteFile (handle, &c, 0, &count, NULL);
|
|
channel->is_seekable = FALSE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static GIOFlags
|
|
g_io_win32_console_get_flags (GIOChannel *channel)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
|
|
g_return_val_if_fail (win32_channel != NULL, 0);
|
|
g_return_val_if_fail (win32_channel->type == G_IO_WIN32_CONSOLE, 0);
|
|
|
|
return g_io_win32_console_get_flags_internal (channel);
|
|
}
|
|
|
|
static GIOFlags
|
|
g_io_win32_msg_get_flags (GIOChannel *channel)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static GIOStatus
|
|
g_io_win32_sock_set_flags (GIOChannel *channel,
|
|
GIOFlags flags,
|
|
GError **err)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
u_long arg;
|
|
|
|
if (win32_channel->debug)
|
|
{
|
|
g_print ("g_io_win32_sock_set_flags: ");
|
|
g_win32_print_gioflags (flags);
|
|
g_print ("\n");
|
|
}
|
|
|
|
if (flags & G_IO_FLAG_NONBLOCK)
|
|
{
|
|
arg = 1;
|
|
if (ioctlsocket (win32_channel->fd, FIONBIO, &arg) == SOCKET_ERROR)
|
|
{
|
|
gchar *emsg = g_win32_error_message (WSAGetLastError ());
|
|
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR,
|
|
G_IO_CHANNEL_ERROR_FAILED,
|
|
emsg);
|
|
g_free (emsg);
|
|
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
arg = 0;
|
|
if (ioctlsocket (win32_channel->fd, FIONBIO, &arg) == SOCKET_ERROR)
|
|
{
|
|
gchar *emsg = g_win32_error_message (WSAGetLastError ());
|
|
|
|
g_set_error_literal (err, G_IO_CHANNEL_ERROR,
|
|
G_IO_CHANNEL_ERROR_FAILED,
|
|
emsg);
|
|
g_free (emsg);
|
|
|
|
return G_IO_STATUS_ERROR;
|
|
}
|
|
}
|
|
|
|
return G_IO_STATUS_NORMAL;
|
|
}
|
|
|
|
static GIOFlags
|
|
g_io_win32_sock_get_flags (GIOChannel *channel)
|
|
{
|
|
/* Could we do something here? */
|
|
return 0;
|
|
}
|
|
|
|
static GIOFuncs win32_channel_msg_funcs = {
|
|
g_io_win32_msg_read,
|
|
g_io_win32_msg_write,
|
|
NULL,
|
|
g_io_win32_msg_close,
|
|
g_io_win32_msg_create_watch,
|
|
g_io_win32_free,
|
|
g_io_win32_unimpl_set_flags,
|
|
g_io_win32_msg_get_flags,
|
|
};
|
|
|
|
static GIOFuncs win32_channel_fd_funcs = {
|
|
g_io_win32_fd_and_console_read,
|
|
g_io_win32_fd_and_console_write,
|
|
g_io_win32_fd_seek,
|
|
g_io_win32_fd_close,
|
|
g_io_win32_fd_create_watch,
|
|
g_io_win32_free,
|
|
g_io_win32_unimpl_set_flags,
|
|
g_io_win32_fd_get_flags,
|
|
};
|
|
|
|
static GIOFuncs win32_channel_console_funcs = {
|
|
g_io_win32_fd_and_console_read,
|
|
g_io_win32_fd_and_console_write,
|
|
NULL,
|
|
g_io_win32_console_close,
|
|
g_io_win32_console_create_watch,
|
|
g_io_win32_free,
|
|
g_io_win32_unimpl_set_flags,
|
|
g_io_win32_console_get_flags,
|
|
};
|
|
|
|
static GIOFuncs win32_channel_sock_funcs = {
|
|
g_io_win32_sock_read,
|
|
g_io_win32_sock_write,
|
|
NULL,
|
|
g_io_win32_sock_close,
|
|
g_io_win32_sock_create_watch,
|
|
g_io_win32_free,
|
|
g_io_win32_sock_set_flags,
|
|
g_io_win32_sock_get_flags,
|
|
};
|
|
|
|
/**
|
|
* g_io_channel_win32_new_messages:
|
|
* @hwnd: a window handle.
|
|
*
|
|
* Creates a new #GIOChannel given a window handle on Windows.
|
|
*
|
|
* This function creates a #GIOChannel that can be used to poll for
|
|
* Windows messages for the window in question.
|
|
*
|
|
* Returns: a new #GIOChannel.
|
|
**/
|
|
GIOChannel *
|
|
#if GLIB_SIZEOF_VOID_P == 8
|
|
g_io_channel_win32_new_messages (gsize hwnd)
|
|
#else
|
|
g_io_channel_win32_new_messages (guint hwnd)
|
|
#endif
|
|
{
|
|
GIOWin32Channel *win32_channel = g_new (GIOWin32Channel, 1);
|
|
GIOChannel *channel = (GIOChannel *)win32_channel;
|
|
|
|
g_io_channel_init (channel);
|
|
g_io_channel_win32_init (win32_channel);
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_channel_win32_new_messages: channel=%p hwnd=%p\n",
|
|
channel, (HWND) hwnd);
|
|
channel->funcs = &win32_channel_msg_funcs;
|
|
win32_channel->type = G_IO_WIN32_WINDOWS_MESSAGES;
|
|
win32_channel->hwnd = (HWND) hwnd;
|
|
|
|
/* XXX: check this. */
|
|
channel->is_readable = IsWindow (win32_channel->hwnd);
|
|
channel->is_writeable = IsWindow (win32_channel->hwnd);
|
|
|
|
channel->is_seekable = FALSE;
|
|
|
|
return channel;
|
|
}
|
|
|
|
static GIOChannel *
|
|
g_io_channel_win32_new_fd_internal (gint fd,
|
|
struct _stati64 *st)
|
|
{
|
|
GIOWin32Channel *win32_channel;
|
|
GIOChannel *channel;
|
|
|
|
win32_channel = g_new (GIOWin32Channel, 1);
|
|
channel = (GIOChannel *)win32_channel;
|
|
|
|
g_io_channel_init (channel);
|
|
g_io_channel_win32_init (win32_channel);
|
|
|
|
win32_channel->fd = fd;
|
|
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_channel_win32_new_fd: channel=%p fd=%u\n",
|
|
channel, fd);
|
|
|
|
if (st->st_mode & _S_IFCHR) /* console */
|
|
{
|
|
channel->funcs = &win32_channel_console_funcs;
|
|
win32_channel->type = G_IO_WIN32_CONSOLE;
|
|
g_io_win32_console_get_flags_internal (channel);
|
|
}
|
|
else
|
|
{
|
|
channel->funcs = &win32_channel_fd_funcs;
|
|
win32_channel->type = G_IO_WIN32_FILE_DESC;
|
|
g_io_win32_fd_get_flags_internal (channel, st);
|
|
}
|
|
|
|
return channel;
|
|
}
|
|
|
|
/**
|
|
* g_io_channel_win32_new_fd:
|
|
* @fd: a C library file descriptor.
|
|
*
|
|
* Creates a new #GIOChannel given a file descriptor on Windows. This
|
|
* works for file descriptors from the C runtime.
|
|
*
|
|
* This function works for file descriptors as returned by the open(),
|
|
* creat(), pipe() and fileno() calls in the Microsoft C runtime. In
|
|
* order to meaningfully use this function your code should use the
|
|
* same C runtime as GLib uses, which is msvcrt.dll. Note that in
|
|
* current Microsoft compilers it is near impossible to convince it to
|
|
* build code that would use msvcrt.dll. The last Microsoft compiler
|
|
* version that supported using msvcrt.dll as the C runtime was version 6.
|
|
* The GNU compiler and toolchain for Windows, also known as Mingw,
|
|
* fully supports msvcrt.dll.
|
|
*
|
|
* If you have created a #GIOChannel for a file descriptor and started
|
|
* watching (polling) it, you shouldn't call read() on the file
|
|
* descriptor. This is because adding polling for a file descriptor is
|
|
* implemented in GLib on Windows by starting a thread that sits
|
|
* blocked in a read() from the file descriptor most of the time. All
|
|
* reads from the file descriptor should be done by this internal GLib
|
|
* thread. Your code should call only g_io_channel_read().
|
|
*
|
|
* This function is available only in GLib on Windows.
|
|
*
|
|
* Returns: a new #GIOChannel.
|
|
**/
|
|
GIOChannel *
|
|
g_io_channel_win32_new_fd (gint fd)
|
|
{
|
|
struct _stati64 st;
|
|
|
|
if (_fstati64 (fd, &st) == -1)
|
|
{
|
|
g_warning ("g_io_channel_win32_new_fd: %d isn't an open file descriptor in the C library GLib uses.", fd);
|
|
return NULL;
|
|
}
|
|
|
|
return g_io_channel_win32_new_fd_internal (fd, &st);
|
|
}
|
|
|
|
gint
|
|
g_io_channel_win32_get_fd (GIOChannel *channel)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
|
|
return win32_channel->fd;
|
|
}
|
|
|
|
/**
|
|
* g_io_channel_win32_new_socket:
|
|
* @socket: a Winsock socket
|
|
*
|
|
* Creates a new #GIOChannel given a socket on Windows.
|
|
*
|
|
* This function works for sockets created by Winsock. It's available
|
|
* only in GLib on Windows.
|
|
*
|
|
* Polling a #GSource created to watch a channel for a socket puts the
|
|
* socket in non-blocking mode. This is a side-effect of the
|
|
* implementation and unavoidable.
|
|
*
|
|
* Returns: a new #GIOChannel
|
|
**/
|
|
GIOChannel *
|
|
g_io_channel_win32_new_socket (int socket)
|
|
{
|
|
GIOWin32Channel *win32_channel = g_new (GIOWin32Channel, 1);
|
|
GIOChannel *channel = (GIOChannel *)win32_channel;
|
|
|
|
g_io_channel_init (channel);
|
|
g_io_channel_win32_init (win32_channel);
|
|
if (win32_channel->debug)
|
|
g_print ("g_io_channel_win32_new_socket: channel=%p sock=%d\n",
|
|
channel, socket);
|
|
channel->funcs = &win32_channel_sock_funcs;
|
|
win32_channel->type = G_IO_WIN32_SOCKET;
|
|
win32_channel->fd = socket;
|
|
|
|
channel->is_readable = TRUE;
|
|
channel->is_writeable = TRUE;
|
|
channel->is_seekable = FALSE;
|
|
|
|
return channel;
|
|
}
|
|
|
|
GIOChannel *
|
|
g_io_channel_unix_new (gint fd)
|
|
{
|
|
gboolean is_fd, is_socket;
|
|
struct _stati64 st;
|
|
int optval, optlen;
|
|
|
|
is_fd = (_fstati64 (fd, &st) == 0);
|
|
|
|
optlen = sizeof (optval);
|
|
is_socket = (getsockopt (fd, SOL_SOCKET, SO_TYPE, (char *) &optval, &optlen) != SOCKET_ERROR);
|
|
|
|
if (is_fd && is_socket)
|
|
g_warning ("g_io_channel_unix_new: %d is both a file descriptor and a socket. File descriptor interpretation assumed. To avoid ambiguity, call either g_io_channel_win32_new_fd() or g_io_channel_win32_new_socket() instead.", fd);
|
|
|
|
if (is_fd)
|
|
return g_io_channel_win32_new_fd_internal (fd, &st);
|
|
|
|
if (is_socket)
|
|
return g_io_channel_win32_new_socket(fd);
|
|
|
|
g_warning ("g_io_channel_unix_new: %d is neither a file descriptor or a socket.", fd);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
gint
|
|
g_io_channel_unix_get_fd (GIOChannel *channel)
|
|
{
|
|
return g_io_channel_win32_get_fd (channel);
|
|
}
|
|
|
|
void
|
|
g_io_channel_win32_set_debug (GIOChannel *channel,
|
|
gboolean flag)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
|
|
win32_channel->debug = flag;
|
|
}
|
|
|
|
gint
|
|
g_io_channel_win32_poll (GPollFD *fds,
|
|
gint n_fds,
|
|
gint timeout)
|
|
{
|
|
g_return_val_if_fail (n_fds >= 0, 0);
|
|
|
|
return g_poll (fds, n_fds, timeout);
|
|
}
|
|
|
|
void
|
|
g_io_channel_win32_make_pollfd (GIOChannel *channel,
|
|
GIOCondition condition,
|
|
GPollFD *fd)
|
|
{
|
|
GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
|
|
|
|
switch (win32_channel->type)
|
|
{
|
|
case G_IO_WIN32_FILE_DESC:
|
|
if (win32_channel->data_avail_event == NULL)
|
|
create_events (win32_channel);
|
|
|
|
fd->fd = (gintptr) win32_channel->data_avail_event;
|
|
|
|
if (win32_channel->thread_id == 0)
|
|
{
|
|
/* Is it meaningful for a file descriptor to be polled for
|
|
* both IN and OUT? For what kind of file descriptor would
|
|
* that be? Doesn't seem to make sense, in practise the file
|
|
* descriptors handled here are always read or write ends of
|
|
* pipes surely, and thus unidirectional.
|
|
*/
|
|
if (condition & G_IO_IN)
|
|
create_thread (win32_channel, condition, read_thread);
|
|
else if (condition & G_IO_OUT)
|
|
create_thread (win32_channel, condition, write_thread);
|
|
}
|
|
break;
|
|
|
|
case G_IO_WIN32_CONSOLE:
|
|
fd->fd = _get_osfhandle (win32_channel->fd);
|
|
break;
|
|
|
|
case G_IO_WIN32_SOCKET:
|
|
fd->fd = (gintptr) WSACreateEvent ();
|
|
break;
|
|
|
|
case G_IO_WIN32_WINDOWS_MESSAGES:
|
|
fd->fd = G_WIN32_MSG_HANDLE;
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached ();
|
|
g_abort ();
|
|
}
|
|
|
|
fd->events = condition;
|
|
}
|
|
|
|
#ifndef _WIN64
|
|
|
|
/* Binary compatibility */
|
|
GIOChannel *
|
|
g_io_channel_win32_new_stream_socket (int socket)
|
|
{
|
|
return g_io_channel_win32_new_socket (socket);
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef G_OS_WIN32
|
|
|
|
/* Binary compatibility versions. Not for newly compiled code. */
|
|
|
|
_GLIB_EXTERN GIOChannel *g_io_channel_new_file_utf8 (const gchar *filename,
|
|
const gchar *mode,
|
|
GError **error);
|
|
|
|
GIOChannel *
|
|
g_io_channel_new_file_utf8 (const gchar *filename,
|
|
const gchar *mode,
|
|
GError **error)
|
|
{
|
|
return g_io_channel_new_file (filename, mode, error);
|
|
}
|
|
|
|
#endif
|