| /* GLIB - Library of useful routines for C programming |
| * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
| * |
| * giowin32.c: IO Channels for Win32. |
| * Copyright 1998 Owen Taylor and Tor Lillqvist |
| * Copyright 1999-2000 Tor Lillqvist and Craig Setera |
| * Copyright 2001-2003 Andrew Lanoix |
| * |
| * SPDX-License-Identifier: LGPL-2.1-or-later |
| * |
| * 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 2.1 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, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| /* |
| * 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/. |
| */ |
| |
| /* |
| * Bugs that are related to the code in this file: |
| * |
| * Bug 137968 - Sometimes a GIOFunc on Win32 is called with zero condition |
| * http://bugzilla.gnome.org/show_bug.cgi?id=137968 |
| * |
| * Bug 324234 - Using g_io_add_watch_full() to wait for connect() to return on a non-blocking socket returns prematurely |
| * http://bugzilla.gnome.org/show_bug.cgi?id=324234 |
| * |
| * Bug 331214 - g_io_channel async socket io stalls |
| * http://bugzilla.gnome.org/show_bug.cgi?id=331214 |
| * |
| * Bug 338943 - Multiple watches on the same socket |
| * http://bugzilla.gnome.org/show_bug.cgi?id=338943 |
| * |
| * Bug 357674 - 2 serious bugs in giowin32.c making glib iochannels useless |
| * http://bugzilla.gnome.org/show_bug.cgi?id=357674 |
| * |
| * Bug 425156 - GIOChannel deadlocks on a win32 socket |
| * http://bugzilla.gnome.org/show_bug.cgi?id=425156 |
| * |
| * Bug 468910 - giofunc condition=0 |
| * http://bugzilla.gnome.org/show_bug.cgi?id=468910 |
| * |
| * Bug 500246 - Bug fixes for giowin32 |
| * http://bugzilla.gnome.org/show_bug.cgi?id=500246 |
| * |
| * Bug 548278 - Async GETs connections are always terminated unexpectedly on windows |
| * http://bugzilla.gnome.org/show_bug.cgi?id=548278 |
| * |
| * Bug 548536 - giowin32 problem when adding and removing watches |
| * http://bugzilla.gnome.org/show_bug.cgi?id=548536 |
| * |
| * When fixing bugs related to the code in this file, either the above |
| * bugs or others, make sure that the test programs attached to the |
| * above bugs continue to work. |
| */ |
| |
| #include "config.h" |
| |
| #include "glib.h" |
| |
| #include <stdlib.h> |
| #include <winsock2.h> |
| #include <windows.h> |
| #include <conio.h> |
| #include <fcntl.h> |
| #include <io.h> |
| #include <process.h> |
| #include <errno.h> |
| #include <sys/stat.h> |
| |
| #include "gstdio.h" |
| #include "glibintl.h" |
| |
| |
| typedef struct _GIOWin32Channel GIOWin32Channel; |
| typedef struct _GIOWin32Watch GIOWin32Watch; |
| |
| #define BUFFER_SIZE 4096 |
| |
| typedef enum { |
| G_IO_WIN32_WINDOWS_MESSAGES, /* Windows messages */ |
| |
| G_IO_WIN32_FILE_DESC, /* Unix-like file descriptors from |
| * _open() or _pipe(), except for |
| * console IO. Separate thread to read |
| * or write. |
| */ |
| |
| G_IO_WIN32_CONSOLE, /* Console IO (usually stdin, stdout, stderr) */ |
| |
| G_IO_WIN32_SOCKET /* Sockets. No separate thread. */ |
| } GIOWin32ChannelType; |
| |
| struct _GIOWin32Channel { |
| GIOChannel channel; |
| gint fd; /* Either a Unix-like file handle as provided |
| * by the Microsoft C runtime, or a SOCKET |
| * as provided by WinSock. |
| */ |
| GIOWin32ChannelType type; |
| |
| gboolean debug; |
| |
| /* Field used by G_IO_WIN32_WINDOWS_MESSAGES channels */ |
| HWND hwnd; /* Handle of window, or NULL */ |
| |
| /* Fields used by G_IO_WIN32_FILE_DESC channels. */ |
| CRITICAL_SECTION mutex; |
| |
| int direction; /* 0 means we read from it, |
| * 1 means we write to it. |
| */ |
| |
| gboolean running; /* Is reader or writer thread |
| * running. FALSE if EOF has been |
| * reached by the reader thread. |
| */ |
| |
| gboolean needs_close; /* If the channel has been closed while |
| * the reader thread was still running. |
| */ |
| |
| guint thread_id; /* If non-NULL the channel has or has |
| * had a reader or writer thread. |
| */ |
| HANDLE data_avail_event; |
| |
| gushort revents; |
| |
| /* Data is kept in a circular buffer. To be able to distinguish between |
| * empty and full buffers, we cannot fill it completely, but have to |
| * leave a one character gap. |
| * |
| * Data available is between indexes rdp and wrp-1 (modulo BUFFER_SIZE). |
| * |
| * Empty: wrp == rdp |
| * Full: (wrp + 1) % BUFFER_SIZE == rdp |
| * Partial: otherwise |
| */ |
| guchar *buffer; /* (Circular) buffer */ |
| gint wrp, rdp; /* Buffer indices for writing and reading */ |
| HANDLE space_avail_event; |
| |
| /* Fields used by G_IO_WIN32_SOCKET channels */ |
| int event_mask; |
| int last_events; |
| HANDLE event; |
| gboolean write_would_have_blocked; |
| gboolean ever_writable; |
| }; |
| |
| struct _GIOWin32Watch { |
| GSource source; |
| GPollFD pollfd; |
| GIOChannel *channel; |
| GIOCondition condition; |
| }; |
| |
| static void |
| g_win32_print_access_mode (int flags) |
| { |
| g_print ("%s%s%s%s%s%s%s%s%s%s", |
| ((flags & 0x3) == _O_RDWR ? "O_RDWR" : |
| ((flags & 0x3) == _O_RDONLY ? "O_RDONLY" : |
| ((flags & 0x3) == _O_WRONLY ? "O_WRONLY" : "0"))), |
| (flags & _O_APPEND ? "|O_APPEND" : ""), |
| (flags & _O_RANDOM ? "|O_RANDOM" : ""), |
| (flags & _O_SEQUENTIAL ? "|O_SEQUENTIAL" : ""), |
| (flags & _O_TEMPORARY ? "|O_TEMPORARY" : ""), |
| (flags & _O_CREAT ? "|O_CREAT" : ""), |
| (flags & _O_TRUNC ? "|O_TRUNC" : ""), |
| (flags & _O_EXCL ? "|O_EXCL" : ""), |
| (flags & _O_TEXT ? "|O_TEXT" : ""), |
| (flags & _O_BINARY ? "|O_BINARY" : "")); |
| } |
| |
| static void |
| g_win32_print_gioflags (GIOFlags flags) |
| { |
| char *bar = ""; |
| |
| if (flags & G_IO_FLAG_APPEND) |
| bar = "|", g_print ("APPEND"); |
| if (flags & G_IO_FLAG_NONBLOCK) |
| g_print ("%sNONBLOCK", bar), bar = "|"; |
| if (flags & G_IO_FLAG_IS_READABLE) |
| g_print ("%sREADABLE", bar), bar = "|"; |
| if (flags & G_IO_FLAG_IS_WRITABLE) |
| g_print ("%sWRITABLE", bar), bar = "|"; |
| if (flags & G_IO_FLAG_IS_SEEKABLE) |
| g_print ("%sSEEKABLE", bar), bar = "|"; |
| } |
| |
| static const char * |
| event_mask_to_string (int mask) |
| { |
| char buf[100]; |
| int checked_bits = 0; |
| char *bufp = buf; |
| |
| if (mask == 0) |
| return ""; |
| |
| #define BIT(n) checked_bits |= FD_##n; if (mask & FD_##n) bufp += sprintf (bufp, "%s" #n, (bufp>buf ? "|" : "")) |
| |
| BIT (READ); |
| BIT (WRITE); |
| BIT (OOB); |
| BIT (ACCEPT); |
| BIT (CONNECT); |
| BIT (CLOSE); |
| BIT (QOS); |
| BIT (GROUP_QOS); |
| BIT (ROUTING_INTERFACE_CHANGE); |
| BIT (ADDRESS_LIST_CHANGE); |
| |
| #undef BIT |
| |
| if ((mask & ~checked_bits) != 0) |
| bufp += sprintf (bufp, "|%#x", mask & ~checked_bits); |
| |
| return g_quark_to_string (g_quark_from_string (buf)); |
| } |
| |
| static const char * |
| condition_to_string (GIOCondition condition) |
| { |
| char buf[100]; |
| int checked_bits = 0; |
| char *bufp = buf; |
| |
| if (condition == 0) |
| return ""; |
| |
| #define BIT(n) checked_bits |= G_IO_##n; if (condition & G_IO_##n) bufp += sprintf (bufp, "%s" #n, (bufp>buf ? "|" : "")) |
| |
| BIT (IN); |
| BIT (OUT); |
| BIT (PRI); |
| BIT (ERR); |
| BIT (HUP); |
| BIT (NVAL); |
| |
| #undef BIT |
| |
| if ((condition & ~checked_bits) != 0) |
| bufp += sprintf (bufp, "|%#x", condition & ~checked_bits); |
| |
| return g_quark_to_string (g_quark_from_string (buf)); |
| } |
| |
| static gboolean |
| g_io_win32_get_debug_flag (void) |
| { |
| return (g_getenv ("G_IO_WIN32_DEBUG") != NULL); |
| } |
| |
| static void |
| g_io_channel_win32_init (GIOWin32Channel *channel) |
| { |
| channel->debug = g_io_win32_get_debug_flag (); |
| |
| InitializeCriticalSection (&channel->mutex); |
| channel->running = FALSE; |
| channel->needs_close = FALSE; |
| channel->thread_id = 0; |
| channel->data_avail_event = NULL; |
| channel->revents = 0; |
| channel->buffer = NULL; |
| channel->space_avail_event = NULL; |
| |
| channel->event_mask = 0; |
| channel->last_events = 0; |
| channel->event = NULL; |
| channel->write_would_have_blocked = FALSE; |
| channel->ever_writable = FALSE; |
| } |
| |
| static void |
| create_events (GIOWin32Channel *channel) |
| { |
| SECURITY_ATTRIBUTES sec_attrs; |
| |
| sec_attrs.nLength = sizeof (SECURITY_ATTRIBUTES); |
| sec_attrs.lpSecurityDescriptor = NULL; |
| sec_attrs.bInheritHandle = FALSE; |
| |
| /* The data available event is manual reset, the space available event |
| * is automatic reset. |
| */ |
| if (!(channel->data_avail_event = CreateEvent (&sec_attrs, TRUE, FALSE, NULL)) |
| || !(channel->space_avail_event = CreateEvent (&sec_attrs, FALSE, FALSE, NULL))) |
| { |
| gchar *emsg = g_win32_error_message (GetLastError ()); |
| |
| g_error ("Error creating event: %s", emsg); |
| g_free (emsg); |
| } |
| } |
| |
| static unsigned __stdcall |
| read_thread (void *parameter) |
| { |
| GIOWin32Channel *channel = parameter; |
| guchar *buffer; |
| gint nbytes; |
| |
| g_io_channel_ref ((GIOChannel *)channel); |
| |
| if (channel->debug) |
| g_print ("read_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 = 0; |
| channel->buffer = g_malloc (BUFFER_SIZE); |
| channel->rdp = channel->wrp = 0; |
| channel->running = TRUE; |
| |
| SetEvent (channel->space_avail_event); |
| |
| EnterCriticalSection (&channel->mutex); |
| while (channel->running) |
| { |
| if (channel->debug) |
| g_print ("read_thread %#x: rdp=%d, wrp=%d\n", |
| channel->thread_id, channel->rdp, channel->wrp); |
| if ((channel->wrp + 1) % BUFFER_SIZE == channel->rdp) |
| { |
| /* Buffer is full */ |
| if (channel->debug) |
| g_print ("read_thread %#x: resetting space_avail\n", |
| channel->thread_id); |
| ResetEvent (channel->space_avail_event); |
| if (channel->debug) |
| g_print ("read_thread %#x: waiting for space\n", |
| channel->thread_id); |
| LeaveCriticalSection (&channel->mutex); |
| WaitForSingleObject (channel->space_avail_event, INFINITE); |
| EnterCriticalSection (&channel->mutex); |
| if (channel->debug) |
| g_print ("read_thread %#x: rdp=%d, wrp=%d\n", |
| 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; |
| 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; |
| |
| 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 = { 0 }; |
| |
| 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; |
| gint64 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 (); |
| } |
| |
| result = _lseeki64 (win32_channel->fd, 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 = 0; |
| |
| 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 = 0; |
| |
| 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; |
| } |
| G_GNUC_FALLTHROUGH; |
| 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 |