* 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
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
-/* Define this to get (very) verbose logging of all channels */
-/* #define G_IO_WIN32_DEBUG */
+/*
+ * 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 <winsock.h> /* Not everybody has winsock2 */
+#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_WINDOWS_MESSAGES, /* Windows messages */
- G_IO_FILE_DESC, /* Unix-like file descriptors from
- * _open() or _pipe(). Read with read().
- * Have to create separate thread to read.
- */
- G_IO_STREAM_SOCKET /* Stream sockets. Similar as fds, but
- * read with recv().
+ 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 {
gboolean debug;
- /* This is used by G_IO_WINDOWS_MESSAGES channels */
- HWND hwnd; /* handle of window, or NULL */
-
- /* Following fields used by fd and socket channels for input */
+ /* 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 buffer, we cannot fill it completely, but have to
+ * 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).
*/
guchar *buffer; /* (Circular) buffer */
gint wrp, rdp; /* Buffer indices for writing and reading */
- gboolean running; /* Is reader thread running. FALSE if
- * EOF has been reached.
- */
- guint thread_id; /* If non-NULL has a reader thread, or has
- * had.*/
- HANDLE data_avail_event;
HANDLE space_avail_event;
- CRITICAL_SECTION mutex;
-
- /* Function that actually reads from fd */
- int (*reader) (int fd, guchar *buf, int len);
-};
-#define LOCK(mutex) EnterCriticalSection (&mutex)
-#define UNLOCK(mutex) LeaveCriticalSection (&mutex)
+ /* 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;
- GIOFunc callback;
};
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 (getenv ("G_IO_WIN32_DEBUG") != NULL);
+}
+
+static void
g_io_channel_win32_init (GIOWin32Channel *channel)
{
-#ifdef G_IO_WIN32_DEBUG
- channel->debug = TRUE;
-#else
- if (getenv ("G_IO_WIN32_DEBUG") != NULL)
- channel->debug = TRUE;
- else
- channel->debug = FALSE;
-#endif
- channel->buffer = NULL;
+ 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
{
SECURITY_ATTRIBUTES sec_attrs;
- sec_attrs.nLength = sizeof(SECURITY_ATTRIBUTES);
+ sec_attrs.nLength = sizeof (SECURITY_ATTRIBUTES);
sec_attrs.lpSecurityDescriptor = NULL;
sec_attrs.bInheritHandle = FALSE;
- channel->data_avail_event = NULL;
- channel->space_avail_event = NULL;
-
/* 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 *msg = g_win32_error_message (GetLastError ());
- g_error ("Error creating event: %s", msg);
+ gchar *emsg = g_win32_error_message (GetLastError ());
+
+ g_error ("Error creating event: %s", emsg);
+ g_free (emsg);
}
- InitializeCriticalSection (&channel->mutex);
}
static unsigned __stdcall
-reader_thread (void *parameter)
+read_thread (void *parameter)
{
GIOWin32Channel *channel = parameter;
guchar *buffer;
- guint nbytes;
+ gint nbytes;
- g_io_channel_ref ((GIOChannel *) channel);
+ g_io_channel_ref ((GIOChannel *)channel);
if (channel->debug)
- g_print ("thread %#x: starting. pid:%#x, fd:%d, data_avail:%#x, space_avail:%#x\n",
+ g_print ("read_thread %#x: start fd=%d, data_avail=%p space_avail=%p\n",
channel->thread_id,
- (guint) GetCurrentProcessId (),
channel->fd,
- (guint) channel->data_avail_event,
- (guint) channel->space_avail_event);
-
+ 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)
{
- LOCK (channel->mutex);
if (channel->debug)
- g_print ("thread %#x: rdp=%d, wrp=%d\n",
+ 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 ("thread %#x: resetting space_available\n",
+ g_print ("read_thread %#x: resetting space_avail\n",
channel->thread_id);
ResetEvent (channel->space_avail_event);
if (channel->debug)
- g_print ("thread %#x: waiting for space\n", channel->thread_id);
- UNLOCK (channel->mutex);
+ g_print ("read_thread %#x: waiting for space\n",
+ channel->thread_id);
+ LeaveCriticalSection (&channel->mutex);
WaitForSingleObject (channel->space_avail_event, INFINITE);
- LOCK (channel->mutex);
+ EnterCriticalSection (&channel->mutex);
if (channel->debug)
- g_print ("thread %#x: rdp=%d, wrp=%d\n",
+ g_print ("read_thread %#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);
- UNLOCK (channel->mutex);
+ if (channel->debug)
+ g_print ("read_thread %#x: calling read() for %d bytes\n",
+ channel->thread_id, nbytes);
+
+ LeaveCriticalSection (&channel->mutex);
- nbytes = (*channel->reader) (channel->fd, buffer, nbytes);
+ nbytes = read (channel->fd, buffer, nbytes);
- if (nbytes <= 0)
- break;
+ 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;
- LOCK (channel->mutex);
if (channel->debug)
- g_print ("thread %#x: got %d bytes, rdp=%d, wrp=%d\n",
+ 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 ("thread %#x: rdp=%d, wrp=%d, setting data available\n",
+ 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);
- UNLOCK (channel->mutex);
}
- LOCK (channel->mutex);
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 ("thread %#x: got EOF, rdp=%d, wrp=%d, setting data available\n",
+ 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);
- UNLOCK (channel->mutex);
+ LeaveCriticalSection (&channel->mutex);
- g_io_channel_unref((GIOChannel *) channel);
+ 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);
- /* All of the Microsoft docs say we should explicitly
- * end the thread...
+ 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.
*/
- _endthreadex(1);
+
+ 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_reader_thread (GIOWin32Channel *channel,
- gpointer reader)
+create_thread (GIOWin32Channel *channel,
+ GIOCondition condition,
+ unsigned (__stdcall *thread) (void *parameter))
{
- channel->reader = reader;
+ HANDLE thread_handle;
+
+ thread_handle = (HANDLE) _beginthreadex (NULL, 0, thread, channel, 0,
+ &channel->thread_id);
+ if (thread_handle == 0)
+ g_warning ("Error creating thread: %s.",
+ g_strerror (errno));
+ else if (!CloseHandle (thread_handle))
+ {
+ gchar *emsg = g_win32_error_message (GetLastError ());
+
+ g_warning ("Error closing thread handle: %s.", emsg);
+ g_free (emsg);
+ }
- if (_beginthreadex (NULL, 0, reader_thread, channel, 0,
- &channel->thread_id) == 0)
- g_warning ("Error creating reader thread: %s", strerror (errno));
WaitForSingleObject (channel->space_avail_event, INFINITE);
}
-static int
+static GIOStatus
buffer_read (GIOWin32Channel *channel,
- guchar *dest,
- guint count,
- GIOError *error)
+ gchar *dest,
+ gsize count,
+ gsize *bytes_read,
+ GError **err)
{
guint nbytes;
guint left = count;
- LOCK (channel->mutex);
+ EnterCriticalSection (&channel->mutex);
if (channel->debug)
- g_print ("reading from thread %#x %d bytes, rdp=%d, wrp=%d\n",
+ 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->rdp == channel->wrp)
+ if (channel->wrp == channel->rdp)
{
- UNLOCK (channel->mutex);
+ LeaveCriticalSection (&channel->mutex);
if (channel->debug)
g_print ("waiting for data from thread %#x\n", channel->thread_id);
WaitForSingleObject (channel->data_avail_event, INFINITE);
- LOCK (channel->mutex);
- if (channel->rdp == channel->wrp && !channel->running)
+ 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)
{
- UNLOCK (channel->mutex);
- return 0;
+ if (channel->debug)
+ g_print ("wrp==rdp, !running\n");
+ LeaveCriticalSection (&channel->mutex);
+ *bytes_read = 0;
+ return G_IO_STATUS_EOF;
}
}
nbytes = channel->wrp - channel->rdp;
else
nbytes = BUFFER_SIZE - channel->rdp;
- UNLOCK (channel->mutex);
+ LeaveCriticalSection (&channel->mutex);
nbytes = MIN (left, nbytes);
if (channel->debug)
g_print ("moving %d bytes from thread %#x\n",
memcpy (dest, channel->buffer + channel->rdp, nbytes);
dest += nbytes;
left -= nbytes;
- LOCK (channel->mutex);
+ EnterCriticalSection (&channel->mutex);
channel->rdp = (channel->rdp + nbytes) % BUFFER_SIZE;
if (channel->debug)
- g_print ("setting space available for thread %#x\n", channel->thread_id);
+ 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->rdp == channel->wrp)
+ if (channel->running && channel->wrp == channel->rdp)
{
if (channel->debug)
- g_print ("resetting data_available of thread %#x\n",
+ g_print ("resetting data_avail of thread %#x\n",
channel->thread_id);
ResetEvent (channel->data_avail_event);
};
- UNLOCK (channel->mutex);
+ 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?
*/
- *error = G_IO_ERROR_NONE;
- return count - left;
+ *bytes_read = count - left;
+ return (*bytes_read > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF;
}
-static gboolean
-g_io_win32_prepare (gpointer source_data,
- GTimeVal *current_time,
- gint *timeout,
- gpointer user_data)
-{
- *timeout = -1;
-
- return FALSE;
-}
-static gboolean
-g_io_win32_check (gpointer source_data,
- GTimeVal *current_time,
- gpointer user_data)
+static GIOStatus
+buffer_write (GIOWin32Channel *channel,
+ const gchar *dest,
+ gsize count,
+ gsize *bytes_written,
+ GError **err)
{
- GIOWin32Watch *data = source_data;
- GIOWin32Channel *channel = (GIOWin32Channel *) data->channel;
+ guint nbytes;
+ guint left = count;
- /* If the thread has died, we have encountered EOF. If the buffer
- * also is emtpty set the HUP bit.
- */
- if (!channel->running && channel->rdp == channel->wrp)
+ 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 ("g_io_win32_check: setting G_IO_HUP thread %#x rdp=%d wrp=%d\n",
+ 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);
- data->pollfd.revents |= G_IO_HUP;
- return TRUE;
}
-
- return (data->pollfd.revents & data->condition);
-}
+
+ nbytes = MIN ((channel->rdp + BUFFER_SIZE - channel->wrp - 1) % BUFFER_SIZE,
+ BUFFER_SIZE - channel->wrp);
-static gboolean
-g_io_win32_dispatch (gpointer source_data,
- GTimeVal *current_time,
- gpointer user_data)
-
-{
- GIOWin32Watch *data = source_data;
-
- return (*data->callback) (data->channel,
- data->pollfd.revents & data->condition,
- user_data);
-}
+ 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);
-static void
-g_io_win32_destroy (gpointer source_data)
-{
- GIOWin32Watch *data = source_data;
-
- g_main_remove_poll (&data->pollfd);
- g_io_channel_unref (data->channel);
- g_free (data);
-}
+ 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);
-static GSourceFuncs win32_watch_funcs = {
- g_io_win32_prepare,
- g_io_win32_check,
- g_io_win32_dispatch,
- g_io_win32_destroy
-};
+ 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);
+ }
-static GIOError
-g_io_win32_msg_read (GIOChannel *channel,
- gchar *buf,
- guint count,
- guint *bytes_read)
-{
- GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
- MSG msg; /* In case of alignment problems */
-
- if (count < sizeof (MSG))
- return G_IO_ERROR_INVAL;
-
- if (!PeekMessage (&msg, win32_channel->hwnd, 0, 0, PM_REMOVE))
- return G_IO_ERROR_AGAIN;
+ LeaveCriticalSection (&channel->mutex);
- memmove (buf, &msg, sizeof (MSG));
- *bytes_read = sizeof (MSG);
- return G_IO_ERROR_NONE;
+ /* 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 GIOError
-g_io_win32_msg_write (GIOChannel *channel,
- gchar *buf,
- guint count,
- guint *bytes_written)
+
+static gboolean
+g_io_win32_prepare (GSource *source,
+ gint *timeout)
{
- GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
- MSG msg;
-
- if (count != sizeof (MSG))
- return G_IO_ERROR_INVAL;
+ GIOWin32Watch *watch = (GIOWin32Watch *)source;
+ GIOCondition buffer_condition = g_io_channel_get_buffer_condition (watch->channel);
+ GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
+ int event_mask;
- /* In case of alignment problems */
- memmove (&msg, buf, sizeof (MSG));
- if (!PostMessage (win32_channel->hwnd, msg.message, msg.wParam, msg.lParam))
- return G_IO_ERROR_UNKNOWN;
+ *timeout = -1;
- *bytes_written = sizeof (MSG);
- return G_IO_ERROR_NONE;
-}
+ if (channel->debug)
+ g_print ("g_io_win32_prepare: source=%p channel=%p", source, channel);
-static GIOError
-g_io_win32_no_seek (GIOChannel *channel,
- gint offset,
- GSeekType type)
-{
- return G_IO_ERROR_UNKNOWN;
-}
+ 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;
-static void
-g_io_win32_msg_close (GIOChannel *channel)
-{
- /* Nothing to be done. Or should we set hwnd to some invalid value? */
-}
+ 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;
-static void
-g_io_win32_free (GIOChannel *channel)
-{
- GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
+ 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 ();
+ 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 ();
+ 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 (win32_channel->buffer)
+ if (!func)
{
- CloseHandle (win32_channel->data_avail_event);
- CloseHandle (win32_channel->space_avail_event);
- DeleteCriticalSection (&win32_channel->mutex);
+ g_warning ("IO Watch dispatched without callback\n"
+ "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 ();
+ 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
+};
+
+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 */
+
+ 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;
+
+ 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 guint
-g_io_win32_msg_add_watch (GIOChannel *channel,
- gint priority,
- GIOCondition condition,
- GIOFunc func,
- gpointer user_data,
- GDestroyNotify notify)
+static GSource *
+g_io_win32_msg_create_watch (GIOChannel *channel,
+ GIOCondition condition)
{
- GIOWin32Watch *watch = g_new (GIOWin32Watch, 1);
+ GIOWin32Watch *watch;
+ GSource *source;
+
+ source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch));
+ g_source_set_name (source, "GIOChannel (Win32)");
+ watch = (GIOWin32Watch *)source;
watch->channel = channel;
g_io_channel_ref (channel);
- watch->callback = func;
watch->condition = condition;
- watch->pollfd.fd = G_WIN32_MSG_HANDLE;
+ watch->pollfd.fd = (gintptr) G_WIN32_MSG_HANDLE;
watch->pollfd.events = condition;
- g_main_add_poll (&watch->pollfd, priority);
+ g_source_add_poll (source, &watch->pollfd);
- return g_source_add (priority, TRUE, &win32_watch_funcs,
- watch, user_data, notify);
+ return source;
}
-static GIOError
-g_io_win32_fd_read (GIOChannel *channel,
- gchar *buf,
- guint count,
- guint *bytes_read)
+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;
+ GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
gint result;
- GIOError error;
+
+ 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)
{
- result = buffer_read (win32_channel, buf, count, &error);
- if (result < 0)
- {
- *bytes_read = 0;
- return error;
- }
- else
- {
- *bytes_read = result;
- return G_IO_ERROR_NONE;
- }
+ return buffer_read (win32_channel, buf, count, bytes_read, err);
}
result = read (win32_channel->fd, buf, count);
+ if (win32_channel->debug)
+ g_print ("g_io_win32_fd_read: read() => %d\n", result);
+
if (result < 0)
{
*bytes_read = 0;
- if (errno == EINVAL)
- return G_IO_ERROR_INVAL;
- else
- return G_IO_ERROR_UNKNOWN;
- }
- else
- {
- *bytes_read = result;
- return G_IO_ERROR_NONE;
+
+ switch (errno)
+ {
+#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 (errno),
+ g_strerror (errno));
+ return G_IO_STATUS_ERROR;
+ }
}
+
+ *bytes_read = result;
+
+ return (result > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF;
}
-static GIOError
-g_io_win32_fd_write(GIOChannel *channel,
- gchar *buf,
- guint count,
- guint *bytes_written)
+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;
+ GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
gint result;
+
+ if (win32_channel->thread_id)
+ {
+ return buffer_write (win32_channel, buf, count, bytes_written, err);
+ }
result = write (win32_channel->fd, buf, count);
if (win32_channel->debug)
- g_print ("g_io_win32_fd_write: fd:%d count:%d = %d\n",
+ 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 (errno)
- {
- case EINVAL:
- return G_IO_ERROR_INVAL;
+ {
+#ifdef EAGAIN
case EAGAIN:
- return G_IO_ERROR_AGAIN;
+ return G_IO_STATUS_AGAIN;
+#endif
default:
- return G_IO_ERROR_UNKNOWN;
- }
- }
- else
- {
- *bytes_written = result;
- return G_IO_ERROR_NONE;
+ g_set_error_literal (err, G_IO_CHANNEL_ERROR,
+ g_io_channel_error_from_errno (errno),
+ g_strerror (errno));
+ return G_IO_STATUS_ERROR;
+ }
}
+
+ *bytes_written = result;
+
+ return G_IO_STATUS_NORMAL;
}
-static GIOError
+static GIOStatus
g_io_win32_fd_seek (GIOChannel *channel,
- gint offset,
- GSeekType type)
+ gint64 offset,
+ GSeekType type,
+ GError **err)
{
- GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
+ GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
int whence;
+ off_t tmp_offset;
off_t result;
switch (type)
whence = SEEK_END;
break;
default:
- g_warning ("g_io_win32_fd_seek: unknown seek type");
- return G_IO_ERROR_UNKNOWN;
+ whence = -1; /* Keep the compiler quiet */
+ g_assert_not_reached ();
+ 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, offset, whence);
+ result = lseek (win32_channel->fd, tmp_offset, whence);
if (result < 0)
{
- switch (errno)
- {
- case EINVAL:
- return G_IO_ERROR_INVAL;
- default:
- return G_IO_ERROR_UNKNOWN;
- }
+ g_set_error_literal (err, G_IO_CHANNEL_ERROR,
+ g_io_channel_error_from_errno (errno),
+ g_strerror (errno));
+ return G_IO_STATUS_ERROR;
}
- else
- return G_IO_ERROR_NONE;
+
+ return G_IO_STATUS_NORMAL;
}
-static void
-g_io_win32_fd_close (GIOChannel *channel)
+static GIOStatus
+g_io_win32_fd_close (GIOChannel *channel,
+ GError **err)
{
- GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
+ GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
- close (win32_channel->fd);
- return;
-}
+ 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);
-static int
-fd_reader (int fd,
- guchar *buf,
- int len)
-{
- return read (fd, buf, len);
+ /* FIXME error detection? */
+
+ return G_IO_STATUS_NORMAL;
}
-static guint
-g_io_win32_fd_add_watch (GIOChannel *channel,
- gint priority,
- GIOCondition condition,
- GIOFunc func,
- gpointer user_data,
- GDestroyNotify notify)
+static GSource *
+g_io_win32_fd_create_watch (GIOChannel *channel,
+ GIOCondition condition)
{
- GIOWin32Watch *watch = g_new (GIOWin32Watch, 1);
- GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
-
+ 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->callback = func;
watch->condition = condition;
- create_events (win32_channel);
+ if (win32_channel->data_avail_event == NULL)
+ create_events (win32_channel);
- watch->pollfd.fd = (gint) win32_channel->data_avail_event;
+ watch->pollfd.fd = (gintptr) win32_channel->data_avail_event;
watch->pollfd.events = condition;
if (win32_channel->debug)
- g_print ("g_io_win32_fd_add_watch: fd:%d handle:%#x\n",
- win32_channel->fd, watch->pollfd.fd);
+ 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;
- create_reader_thread (win32_channel, fd_reader);
+ if (close (win32_channel->fd) < 0)
+ {
+ g_set_error_literal (err, G_IO_CHANNEL_ERROR,
+ g_io_channel_error_from_errno (errno),
+ g_strerror (errno));
+ 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;
- g_main_add_poll (&watch->pollfd, priority);
+ watch->channel = channel;
+ g_io_channel_ref (channel);
+
+ watch->condition = condition;
- return g_source_add (priority, TRUE, &win32_watch_funcs,
- watch, user_data, notify);
+ watch->pollfd.fd = _get_osfhandle (win32_channel->fd);
+ watch->pollfd.events = condition;
+
+ g_source_add_poll (source, &watch->pollfd);
+
+ return source;
}
-static GIOError
+static GIOStatus
g_io_win32_sock_read (GIOChannel *channel,
gchar *buf,
- guint count,
- guint *bytes_read)
+ gsize count,
+ gsize *bytes_read,
+ GError **err)
{
- GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
+ GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
gint result;
- GIOError error;
-
- if (win32_channel->thread_id)
- {
- result = buffer_read (win32_channel, buf, count, &error);
- if (result < 0)
- {
- *bytes_read = 0;
- return error;
- }
- else
- {
- *bytes_read = result;
- return G_IO_ERROR_NONE;
- }
- }
+ 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 (result < 0)
+ 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;
- return G_IO_ERROR_UNKNOWN;
+
+ 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;
- return G_IO_ERROR_NONE;
+ if (result == 0)
+ return G_IO_STATUS_EOF;
+ else
+ return G_IO_STATUS_NORMAL;
}
}
-static GIOError
-g_io_win32_sock_write(GIOChannel *channel,
- gchar *buf,
- guint count,
- guint *bytes_written)
+static GIOStatus
+g_io_win32_sock_write (GIOChannel *channel,
+ const gchar *buf,
+ gsize count,
+ gsize *bytes_written,
+ GError **err)
{
- GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
+ 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 (WSAGetLastError ())
+
+ switch (winsock_error)
{
case WSAEINVAL:
- return G_IO_ERROR_INVAL;
+ error = G_IO_CHANNEL_ERROR_INVAL;
+ break;
case WSAEWOULDBLOCK:
- case WSAEINTR:
- return G_IO_ERROR_AGAIN;
+ win32_channel->write_would_have_blocked = TRUE;
+ win32_channel->last_events = 0;
+ g_free (emsg);
+ return G_IO_STATUS_AGAIN;
default:
- return G_IO_ERROR_UNKNOWN;
+ 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;
- return G_IO_ERROR_NONE;
+ win32_channel->write_would_have_blocked = FALSE;
+
+ return G_IO_STATUS_NORMAL;
}
}
-static void
-g_io_win32_sock_close (GIOChannel *channel)
+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;
+
+ 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 ();
+ abort ();
+ }
+
+ /* always open 'untranslated' */
+ fid = g_open (filename, flags | _O_BINARY, pmode);
+
+ 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 (errno),
+ g_strerror (errno));
+ 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 ();
+ abort ();
+ }
+
+ return channel;
+}
+
+#if !defined (_WIN64)
+
+#undef g_io_channel_new_file
+
+/* Binary compatibility version. Not for newly compiled code. */
+
+GIOChannel *
+g_io_channel_new_file (const gchar *filename,
+ const gchar *mode,
+ GError **error)
+{
+ gchar *utf8_filename = g_locale_to_utf8 (filename, -1, NULL, NULL, error);
+ GIOChannel *retval;
+
+ if (utf8_filename == NULL)
+ return NULL;
+
+ retval = g_io_channel_new_file_utf8 (utf8_filename, mode, error);
+
+ g_free (utf8_filename);
+
+ return retval;
+}
+
+#endif
+
+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;
+ }
- closesocket (win32_channel->fd);
+ /* XXX: G_IO_FLAG_APPEND */
+ /* XXX: G_IO_FLAG_NONBLOCK */
+
+ return 0;
}
-static int
-sock_reader (int fd,
- guchar *buf,
- int len)
+static GIOFlags
+g_io_win32_fd_get_flags (GIOChannel *channel)
{
- return recv (fd, buf, len, 0);
+ 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 guint
-g_io_win32_sock_add_watch (GIOChannel *channel,
- gint priority,
- GIOCondition condition,
- GIOFunc func,
- gpointer user_data,
- GDestroyNotify notify)
+static GIOFlags
+g_io_win32_console_get_flags_internal (GIOChannel *channel)
{
- GIOWin32Watch *watch = g_new (GIOWin32Watch, 1);
GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
+ HANDLE handle = (HANDLE) _get_osfhandle (win32_channel->fd);
+ gchar c;
+ DWORD count;
+ INPUT_RECORD record;
- watch->channel = channel;
- g_io_channel_ref (channel);
+ channel->is_readable = PeekConsoleInput (handle, &record, 1, &count);
+ channel->is_writeable = WriteFile (handle, &c, 0, &count, NULL);
+ channel->is_seekable = FALSE;
- watch->callback = func;
- watch->condition = condition;
+ return 0;
+}
+
+static GIOFlags
+g_io_win32_console_get_flags (GIOChannel *channel)
+{
+ GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
- create_events (win32_channel);
+ g_return_val_if_fail (win32_channel != NULL, 0);
+ g_return_val_if_fail (win32_channel->type == G_IO_WIN32_CONSOLE, 0);
- watch->pollfd.fd = (gint) win32_channel->data_avail_event;
- watch->pollfd.events = condition;
+ return g_io_win32_console_get_flags_internal (channel);
+}
+
+static GIOFlags
+g_io_win32_msg_get_flags (GIOChannel *channel)
+{
+ return 0;
+}
- /* Sockets are always readable, aren't they? */
- create_reader_thread (win32_channel, sock_reader);
+static GIOStatus
+g_io_win32_sock_set_flags (GIOChannel *channel,
+ GIOFlags flags,
+ GError **err)
+{
+ GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
+ u_long arg;
- g_main_add_poll (&watch->pollfd, priority);
+ if (win32_channel->debug)
+ {
+ g_print ("g_io_win32_sock_set_flags: ");
+ g_win32_print_gioflags (flags);
+ g_print ("\n");
+ }
- return g_source_add (priority, TRUE, &win32_watch_funcs, watch,
- user_data, notify);
+ 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,
- g_io_win32_no_seek,
+ NULL,
g_io_win32_msg_close,
- g_io_win32_msg_add_watch,
- g_io_win32_free
+ 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_read,
- g_io_win32_fd_write,
+ 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_add_watch,
- g_io_win32_free
+ 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,
- g_io_win32_no_seek,
+ NULL,
g_io_win32_sock_close,
- g_io_win32_sock_add_watch,
- g_io_win32_free
+ 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;
+ 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_WINDOWS_MESSAGES;
+ 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;
}
-GIOChannel *
-g_io_channel_win32_new_fd (gint fd)
+static GIOChannel *
+g_io_channel_win32_new_fd_internal (gint fd,
+ struct _stati64 *st)
{
GIOWin32Channel *win32_channel;
GIOChannel *channel;
- struct stat st;
-
- if (fstat (fd, &st) == -1)
- {
- g_warning ("%d isn't a (emulated) file descriptor", fd);
- return NULL;
- }
win32_channel = g_new (GIOWin32Channel, 1);
- channel = (GIOChannel *) win32_channel;
+ channel = (GIOChannel *)win32_channel;
g_io_channel_init (channel);
g_io_channel_win32_init (win32_channel);
- channel->funcs = &win32_channel_fd_funcs;
- win32_channel->type = G_IO_FILE_DESC;
+
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;
+ 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_stream_socket (int socket)
+g_io_channel_win32_new_socket (int socket)
{
GIOWin32Channel *win32_channel = g_new (GIOWin32Channel, 1);
- GIOChannel *channel = (GIOChannel *) win32_channel;
+ 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_STREAM_SOCKET;
+ 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)
{
- return g_io_channel_win32_new_fd (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_win32_set_debug (GIOChannel *channel,
gboolean flag)
{
- GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
+ GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
win32_channel->debug = flag;
}
gint
-g_io_channel_win32_wait_for_condition (GIOChannel *channel,
- GIOCondition condition,
- gint timeout)
+g_io_channel_win32_poll (GPollFD *fds,
+ gint n_fds,
+ gint timeout)
{
- GPollFD pollfd;
- GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
- int result;
-
- pollfd.fd = (gint) win32_channel->data_avail_event;
- pollfd.events = condition;
+ g_return_val_if_fail (n_fds >= 0, 0);
- if (win32_channel->debug)
- g_print ("g_io_channel_win32_wait_for_condition: fd:%d event:%#x timeout:%d\n",
- win32_channel->fd, pollfd.fd, timeout);
+ return g_poll (fds, n_fds, timeout);
+}
- result = (*g_main_win32_get_poll_func ()) (&pollfd, 1, timeout);
+void
+g_io_channel_win32_make_pollfd (GIOChannel *channel,
+ GIOCondition condition,
+ GPollFD *fd)
+{
+ GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
- if (win32_channel->debug)
- g_print ("g_io_channel_win32_wait_for_condition: done:%d\n", result);
+ switch (win32_channel->type)
+ {
+ case G_IO_WIN32_FILE_DESC:
+ if (win32_channel->data_avail_event == NULL)
+ create_events (win32_channel);
- return result;
-}
+ 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;
-/* This variable and the functions below are present just to be
- * binary compatible with old clients... But note that in GIMP, the
- * libgimp/gimp.c:gimp_extension_process() function will have to be modified
- * anyhow for this new approach.
- *
- * These will be removed after some weeks.
- */
-guint g_pipe_readable_msg = 0;
+ case G_IO_WIN32_CONSOLE:
+ fd->fd = _get_osfhandle (win32_channel->fd);
+ break;
-GIOChannel *
-g_io_channel_win32_new_pipe (int fd)
-{
- return g_io_channel_win32_new_fd (fd);
-}
+ case G_IO_WIN32_SOCKET:
+ fd->fd = (gintptr) WSACreateEvent ();
+ break;
+
+ case G_IO_WIN32_WINDOWS_MESSAGES:
+ fd->fd = G_WIN32_MSG_HANDLE;
+ break;
-GIOChannel *
-g_io_channel_win32_new_pipe_with_wakeups (int fd,
- guint peer,
- int peer_fd)
-{
- return g_io_channel_win32_new_fd (fd);
+ default:
+ g_assert_not_reached ();
+ abort ();
+ }
+
+ fd->events = condition;
}
-void
-g_io_channel_win32_pipe_request_wakeups (GIOChannel *channel,
- guint peer,
- int peer_fd)
-{
- /* Nothing needed now */
-}
+#ifndef _WIN64
-void
-g_io_channel_win32_pipe_readable (gint fd,
- guint offset)
+/* Binary compatibility */
+GIOChannel *
+g_io_channel_win32_new_stream_socket (int socket)
{
- /* Nothing needed now */
+ return g_io_channel_win32_new_socket (socket);
}
+#endif
projects / platform / upstream / glib.git / blobdiff