#ifndef __G_IOCHANNEL_H__
#define __G_IOCHANNEL_H__
+#include <gmain.h>
#include <gtypes.h>
G_BEGIN_DECLS
gpointer data);
struct _GIOFuncs
{
- GIOError (*io_read) (GIOChannel *channel,
- gchar *buf,
- guint count,
- guint *bytes_read);
- GIOError (*io_write) (GIOChannel *channel,
- gchar *buf,
- guint count,
- guint *bytes_written);
- GIOError (*io_seek) (GIOChannel *channel,
- gint offset,
- GSeekType type);
- void (*io_close) (GIOChannel *channel);
- guint (*io_add_watch) (GIOChannel *channel,
- gint priority,
- GIOCondition condition,
- GIOFunc func,
- gpointer user_data,
- GDestroyNotify notify);
- void (*io_free) (GIOChannel *channel);
+ GIOError (*io_read) (GIOChannel *channel,
+ gchar *buf,
+ guint count,
+ guint *bytes_read);
+ GIOError (*io_write) (GIOChannel *channel,
+ gchar *buf,
+ guint count,
+ guint *bytes_written);
+ GIOError (*io_seek) (GIOChannel *channel,
+ gint offset,
+ GSeekType type);
+ void (*io_close) (GIOChannel *channel);
+ GSource * (*io_create_watch) (GIOChannel *channel,
+ GIOCondition condition);
+ void (*io_free) (GIOChannel *channel);
};
void g_io_channel_init (GIOChannel *channel);
GIOFunc func,
gpointer user_data,
GDestroyNotify notify);
+GSource *g_io_create_watch (GIOChannel *channel,
+ GIOCondition condition);
guint g_io_add_watch (GIOChannel *channel,
GIOCondition condition,
GIOFunc func,
/* On Unix, IO channels created with this function for any file
* descriptor or socket.
*
- * On Win32, use this only for files opened with the MSVCRT (the
- * Microsoft run-time C library) _open() or _pipe, including file
- * descriptors 0, 1 and 2 (corresponding to stdin, stdout and stderr).
+ * On Win32, this can be used either for files opened with the MSVCRT
+ * (the Microsoft run-time C library) _open() or _pipe, including file
+ * descriptors 0, 1 and 2 (corresponding to stdin, stdout and stderr),
+ * or for Winsock SOCKETs. If the parameter is a legal file
+ * descriptor, it is assumed to be such, otherwise it should be a
+ * SOCKET. This relies on SOCKETs and file descriptors not
+ * overlapping. If you want to be certain, call either
+ * g_io_channel_win32_new_fd() or g_io_channel_win32_new_socket()
+ * instead as appropriate.
*
* The term file descriptor as used in the context of Win32 refers to
* the emulated Unix-like file descriptors MSVCRT provides. The native
* corresponding concept is file HANDLE. There isn't as of yet a way to
- * get GIOChannels for file HANDLEs.
+ * get GIOChannels for Win32 file HANDLEs.
*/
GIOChannel* g_io_channel_unix_new (int fd);
gint g_io_channel_unix_get_fd (GIOChannel *channel);
/* Use this to get a GPollFD from a GIOChannel, so that you can call
* g_io_channel_win32_poll(). After calling this you should only use
* g_io_channel_read() to read from the GIOChannel, i.e. never read()
- * or recv() from the underlying file descriptor or SOCKET.
+ * from the underlying file descriptor. For SOCKETs, it is possible to call
+ * recv().
*/
void g_io_channel_win32_make_pollfd (GIOChannel *channel,
GIOCondition condition,
/* This can be used to wait a until at least one of the channels is readable.
* On Unix you would do a select() on the file descriptors of the channels.
- * This should probably be available for all platforms?
*/
gint g_io_channel_win32_poll (GPollFD *fds,
gint n_fds,
GPollFD *fd,
guint hwnd);
-/* An IO channel for Windows messages for window handle hwnd. */
+/* Create an IO channel for Windows messages for window handle hwnd. */
GIOChannel *g_io_channel_win32_new_messages (guint hwnd);
-/* An IO channel for C runtime (emulated Unix-like) file
- * descriptors. Identical to g_io_channel_unix_new above.
- * After calling g_io_add_watch() on a IO channel returned
- * by this function, you shouldn't call read() on the file
- * descriptor.
+/* Create an IO channel for C runtime (emulated Unix-like) file
+ * descriptors. After calling g_io_add_watch() on a IO channel
+ * returned by this function, you shouldn't call read() on the file
+ * descriptor. This is because adding polling for a file descriptor is
+ * implemented on Win32 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().
*/
GIOChannel* g_io_channel_win32_new_fd (int fd);
/* Get the C runtime file descriptor of a channel. */
gint g_io_channel_win32_get_fd (GIOChannel *channel);
-/* An IO channel for a SOCK_STREAM winsock socket. The parameter
- * should be a SOCKET. After calling g_io_add_watch() on a IO channel
- * returned by this function, you shouldn't call recv() on the SOCKET.
+/* Create an IO channel for a winsock socket. The parameter should be
+ * a SOCKET. Contrary to IO channels for file descriptors (on *Win32),
+ * you can use normal recv() or recvfrom() on sockets even if GLib
+ * is polling them.
*/
-GIOChannel *g_io_channel_win32_new_stream_socket (int socket);
+GIOChannel *g_io_channel_win32_new_socket (gint socket);
#endif
-/* Windows emulation stubs for common Unix functions
- */
-#ifdef G_OS_WIN32
-# define MAXPATHLEN 1024
-
-#ifdef _MSC_VER
-typedef int pid_t;
-#endif
-
-/*
- * To get prototypes for the following POSIXish functions, you have to
- * include the indicated non-POSIX headers. The functions are defined
- * in OLDNAMES.LIB (MSVC) or -lmoldname-msvc (mingw32).
- *
- * getcwd: <direct.h> (MSVC), <io.h> (mingw32)
- * getpid: <process.h>
- * access: <io.h>
- * unlink: <stdio.h> or <io.h>
- * open, read, write, lseek, close: <io.h>
- * rmdir: <direct.h>
- * pipe: <direct.h>
- */
-
-/* pipe is not in OLDNAMES.LIB or -lmoldname-msvc. */
-#define pipe(phandles) _pipe (phandles, 4096, _O_BINARY)
-
-/* For some POSIX functions that are not provided by the MS runtime,
- * we provide emulators in glib, which are prefixed with g_win32_.
- */
-# define ftruncate(fd, size) g_win32_ftruncate (fd, size)
-
-/* -lmingw32 also has emulations for these, but we need our own
- * for MSVC anyhow, so we might aswell use them always.
- */
-# define opendir g_win32_opendir
-# define readdir g_win32_readdir
-# define rewinddir g_win32_rewinddir
-# define closedir g_win32_closedir
-# define NAME_MAX 255
-
-struct dirent
-{
- gchar d_name[NAME_MAX + 1];
-};
-
-struct DIR
-{
- gchar *dir_name;
- gboolean just_opened;
- guint find_file_handle;
- gpointer find_file_data;
- struct dirent readdir_result;
-};
-typedef struct DIR DIR;
-
-/* emulation functions */
-extern int g_win32_ftruncate (gint f,
- guint size);
-DIR* g_win32_opendir (const gchar *dirname);
-struct dirent* g_win32_readdir (DIR *dir);
-void g_win32_rewinddir (DIR *dir);
-gint g_win32_closedir (DIR *dir);
-
-/* The MS setlocale uses locale names of the form "English_United
- * States.1252" etc. We want the Unixish standard form "en", "zh_TW"
- * etc. This function gets the current thread locale from Windows and
- * returns it as a string of the above form for use in forming file
- * names etc. The returned string should be deallocated with g_free().
- */
-gchar * g_win32_getlocale (void);
-
-/* Translate a Win32 error code (as returned by GetLastError()) into
- * the corresponding message. The returned string should be deallocated
- * with g_free().
- */
-gchar * g_win32_error_message (gint error);
-
-#endif /* G_OS_WIN32 */
-
G_END_DECLS
#endif /* __G_IOCHANNEL_H__ */
projects / platform / upstream / glib.git / blobdiff