diff options
Diffstat (limited to 'winsup/cygwin/fhandler_windows.cc')
-rw-r--r-- | winsup/cygwin/fhandler_windows.cc | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/winsup/cygwin/fhandler_windows.cc b/winsup/cygwin/fhandler_windows.cc deleted file mode 100644 index f937d81..0000000 --- a/winsup/cygwin/fhandler_windows.cc +++ /dev/null @@ -1,149 +0,0 @@ -/* fhandler_windows.cc: code to access windows message queues. - - Copyright 1998 Cygnus Solutions. - - 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 <errno.h> -#include <wingdi.h> -#include <winuser.h> -#include "cygerrno.h" -#include "fhandler.h" - -/* -The following unix-style calls are supported: - - open ("/dev/windows", flags, mode=0) - - create a unix fd for message queue. - O_NONBLOCK flag controls the read() call behavior. - - 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 (const char *name) : - fhandler_base (FH_WINDOWS, name) -{ - set_cb (sizeof *this); - hWnd_ = NULL; - method_ = WINDOWS_POST; -} - -int -fhandler_windows::open (const char *, int flags, mode_t) -{ - set_flags (flags); - set_close_on_exec_flag (1); - return 1; -} - -int -fhandler_windows::write (const void *buf, size_t) -{ - MSG *ptr = (MSG *) buf; - - if (method_ == WINDOWS_POST) - { - if (!PostMessage (ptr->hwnd, ptr->message, ptr->wParam, ptr->lParam)) - { - __seterrno (); - return -1; - } - else - return sizeof (MSG); - } - else - return SendMessage (ptr->hwnd, ptr->message, ptr->wParam, ptr->lParam); -} - -int -fhandler_windows::read (void *buf, size_t len) -{ - MSG *ptr = (MSG *) buf; - int ret; - - if (len < sizeof (MSG)) - { - set_errno (EINVAL); - return -1; - } - - ret = GetMessage (ptr, hWnd_, 0, 0); - - if (ret == -1) - { - __seterrno (); - } - set_errno (0); - return ret; -} - -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: - set_errno (EINVAL); - return -1; - } - return 0; -} - -void -fhandler_windows::set_close_on_exec (int val) -{ - if (get_handle ()) - this->fhandler_base::set_close_on_exec (val); - else - this->fhandler_base::set_close_on_exec_flag (val); - void *h = hWnd_; - if (h) - set_inheritance (h, val); -} - -void -fhandler_windows::fixup_after_fork (HANDLE parent) -{ - if (get_handle ()) - this->fhandler_base::fixup_after_fork (parent); - void *h = hWnd_; - if (h) - fork_fixup (parent, h, "hWnd_"); -} |