diff options
Diffstat (limited to 'winsup/cygwin/fhandler_windows.cc')
| -rw-r--r-- | winsup/cygwin/fhandler_windows.cc | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/winsup/cygwin/fhandler_windows.cc b/winsup/cygwin/fhandler_windows.cc deleted file mode 100644 index cb22416df..000000000 --- a/winsup/cygwin/fhandler_windows.cc +++ /dev/null @@ -1,187 +0,0 @@ -/* fhandler_windows.cc: code to access windows message queues. - - Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2009, - 2011 Red Hat, Inc. - - Written by Sergey S. Okhapkin (sos@prospect.com.ru). - Feedback and testing by Andy Piper (andyp@parallax.co.uk). - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -#include "winsup.h" -#include <wingdi.h> -#include <winuser.h> -#include "cygerrno.h" -#include "path.h" -#include "fhandler.h" -#include "sigproc.h" -#include "thread.h" - - -/* -The following unix-style calls are supported: - - open ("/dev/windows", flags, mode=0) - - create a unix fd for message queue. - - read (fd, buf, len) - - return next message from queue. buf must point to MSG - structure, len must be >= sizeof (MSG). If read is set to - non-blocking and the queue is empty, read call returns -1 - immediately with errno set to EAGAIN, otherwise it blocks - untill the message will be received. - - write (fd, buf, len) - - send a message pointed by buf. len argument ignored. - - ioctl (fd, command, *param) - - control read()/write() behavior. - ioctl (fd, WINDOWS_POST, NULL): write() will PostMessage(); - ioctl (fd, WINDOWS_SEND, NULL): write() will SendMessage(); - ioctl (fd, WINDOWS_HWND, &hWnd): read() messages for - hWnd window. - - select () call marks read fd when any message posted to queue. -*/ - -fhandler_windows::fhandler_windows () - : fhandler_base (), hWnd_ (NULL), method_ (WINDOWS_POST) -{ -} - -int -fhandler_windows::open (int flags, mode_t) -{ - set_flags ((flags & ~O_TEXT) | O_BINARY); - close_on_exec (true); - set_open_status (); - return 1; -} - -ssize_t __stdcall -fhandler_windows::write (const void *buf, size_t) -{ - MSG *ptr = (MSG *) buf; - - if (method_ == WINDOWS_POST) - { - if (!PostMessageW (ptr->hwnd, ptr->message, ptr->wParam, ptr->lParam)) - { - __seterrno (); - return -1; - } - } - else if (!SendNotifyMessageW (ptr->hwnd, ptr->message, ptr->wParam, - ptr->lParam)) - { - __seterrno (); - return -1; - } - return sizeof (MSG); -} - -void __stdcall -fhandler_windows::read (void *buf, size_t& len) -{ - MSG *ptr = (MSG *) buf; - - if (len < sizeof (MSG)) - { - set_errno (EINVAL); - len = (size_t) -1; - return; - } - - HANDLE w4[3] = { get_handle (), }; - set_signal_arrived here (w4[1]); - DWORD cnt = 2; - if ((w4[cnt] = pthread::get_cancel_event ()) != NULL) - ++cnt; - for (;;) - { - switch (MsgWaitForMultipleObjectsEx (cnt, w4, - is_nonblocking () ? 0 : INFINITE, - QS_ALLINPUT | QS_ALLPOSTMESSAGE, - MWMO_INPUTAVAILABLE)) - { - case WAIT_OBJECT_0: - if (!PeekMessageW (ptr, hWnd_, 0, 0, PM_REMOVE)) - { - len = (size_t) -1; - __seterrno (); - } - else if (ptr->message == WM_QUIT) - len = 0; - else - len = sizeof (MSG); - break; - case WAIT_OBJECT_0 + 1: - if (_my_tls.call_signal_handler ()) - continue; - len = (size_t) -1; - set_errno (EINTR); - break; - case WAIT_OBJECT_0 + 2: - pthread::static_cancel_self (); - break; - case WAIT_TIMEOUT: - len = (size_t) -1; - set_errno (EAGAIN); - break; - default: - len = (size_t) -1; - __seterrno (); - break; - } - break; - } -} - -int -fhandler_windows::ioctl (unsigned int cmd, void *val) -{ - switch (cmd) - { - case WINDOWS_POST: - case WINDOWS_SEND: - method_ = cmd; - break; - case WINDOWS_HWND: - if (val == NULL) - { - set_errno (EINVAL); - return -1; - } - hWnd_ = * ((HWND *) val); - break; - default: - return fhandler_base::ioctl (cmd, val); - } - return 0; -} - -void -fhandler_windows::set_close_on_exec (bool val) -{ - if (get_handle ()) - fhandler_base::set_close_on_exec (val); - else - fhandler_base::close_on_exec (val); - void *h = hWnd_; - if (h) - set_no_inheritance (h, val); -} - -void -fhandler_windows::fixup_after_fork (HANDLE parent) -{ - if (get_handle ()) - fhandler_base::fixup_after_fork (parent); - void *h = hWnd_; - if (h) - fork_fixup (parent, h, "hWnd_"); -} |