Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 516 insertions, 0 deletions

diff --git a/nx-X11/lib/font/fc/fsio.c b/nx-X11/lib/font/fc/fsio.c
new file mode 100644
index 000000000..fbfb9dfed
--- /dev/null
+++ b/nx-X11/lib/font/fc/fsio.c
@@ -0,0 +1,516 @@
+/* $Xorg: fsio.c,v 1.3 2000/08/17 19:46:36 cpqbld Exp $ */
+/*
+ * Copyright 1990 Network Computing Devices
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Network Computing Devices not be
+ * used in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.  Network Computing
+ * Devices makes no representations about the suitability of this software
+ * for any purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * NETWORK COMPUTING DEVICES DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
+ * IN NO EVENT SHALL NETWORK COMPUTING DEVICES BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE
+ * OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author:  	Dave Lemke, Network Computing Devices, Inc
+ */
+/* $XFree86: xc/lib/font/fc/fsio.c,v 3.16tsi Exp $ */
+/*
+ * font server i/o routines
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef WIN32
+#define _WILLWINSOCK_
+#include	"X11/Xwindows.h"
+#endif
+
+#define FONT_t
+#define TRANS_CLIENT
+#include 	"X11/Xtrans/Xtrans.h"
+#include	"X11/Xpoll.h"
+#include	<X11/fonts/FS.h>
+#include	<X11/fonts/FSproto.h>
+#include	<X11/fonts/fontmisc.h>
+#include	<X11/fonts/fontstruct.h>
+#include	"fservestr.h"
+
+#include	<stdio.h>
+#include	<signal.h>
+#include	<sys/types.h>
+#if !defined(WIN32)
+#ifndef Lynx
+#include	<sys/socket.h>
+#else
+#include	<socket.h>
+#endif
+#endif
+#include	<errno.h>
+#ifdef WIN32
+#define EWOULDBLOCK WSAEWOULDBLOCK
+#undef EINTR
+#define EINTR WSAEINTR
+#endif
+
+#ifdef __UNIXOS2__
+#define select(n,r,w,x,t) os2PseudoSelect(n,r,w,x,t)
+#endif
+
+
+static int  padlength[4] = {0, 3, 2, 1};
+fd_set _fs_fd_mask;
+
+static int
+_fs_resize (FSBufPtr buf, long size);
+
+static void
+_fs_downsize (FSBufPtr buf, long size);
+    
+int
+_fs_poll_connect (XtransConnInfo trans_conn, int timeout)
+{
+    fd_set	    w_mask;
+    struct timeval  tv;
+    int		    fs_fd = _FontTransGetConnectionNumber (trans_conn);
+    int		    ret;
+
+    do
+    {
+	tv.tv_usec = 0;
+	tv.tv_sec = timeout;
+	FD_ZERO (&w_mask);
+	FD_SET (fs_fd, &w_mask);
+	ret = Select (fs_fd + 1, NULL, &w_mask, NULL, &tv);
+    } while (ret < 0 && ECHECK(EINTR));
+    if (ret == 0)
+	return FSIO_BLOCK;
+    if (ret < 0)
+	return FSIO_ERROR;
+    return FSIO_READY;
+}
+
+XtransConnInfo
+_fs_connect(char *servername, int *err)
+{
+    XtransConnInfo  trans_conn;		/* transport connection object */
+    int		    ret;
+    int		    i = 0;
+    int		    retries = 5;
+
+    /*
+     * Open the network connection.
+     */
+    if( (trans_conn=_FontTransOpenCOTSClient(servername)) == NULL )
+    {
+	*err = FSIO_ERROR;
+	return 0;
+    }
+
+    /*
+     * Set the connection non-blocking since we use select() to block.
+     */
+
+    _FontTransSetOption(trans_conn, TRANS_NONBLOCKING, 1);
+
+    do {
+	if (i == TRANS_TRY_CONNECT_AGAIN)
+	    sleep(1);
+	i = _FontTransConnect(trans_conn,servername);
+    } while ((i == TRANS_TRY_CONNECT_AGAIN) && (retries-- > 0));
+
+    if (i < 0)
+    {
+	if (i == TRANS_IN_PROGRESS)
+	    ret = FSIO_BLOCK;
+	else
+	    ret = FSIO_ERROR;
+    }
+    else
+	ret = FSIO_READY;
+
+    if (ret == FSIO_ERROR)
+    {
+	_FontTransClose(trans_conn);
+	trans_conn = 0;
+    }
+
+    *err = ret;
+    return trans_conn;
+}
+
+int
+_fs_fill (FSFpePtr conn)
+{
+    long    avail;
+    long    bytes_read;
+    Bool    waited = FALSE;
+    
+    if (_fs_flush (conn) < 0)
+	return FSIO_ERROR;
+    /*
+     * Don't go overboard here; stop reading when we've
+     * got enough to satisfy the pending request
+     */
+    while ((conn->inNeed - (conn->inBuf.insert - conn->inBuf.remove)) > 0)
+    {
+	avail = conn->inBuf.size - conn->inBuf.insert;
+	/*
+	 * For SVR4 with a unix-domain connection, ETEST() after selecting
+	 * readable means the server has died.  To do this here, we look for
+	 * two consecutive reads returning ETEST().
+	 */
+	ESET (0);
+	bytes_read =_FontTransRead(conn->trans_conn,
+				   conn->inBuf.buf + conn->inBuf.insert,
+				   avail);
+	if (bytes_read > 0) {
+	    conn->inBuf.insert += bytes_read;
+	    waited = FALSE;
+	}
+	else
+	{
+	    if (bytes_read == 0 || ETEST ())
+	    {
+		if (!waited)
+		{
+		    waited = TRUE;
+		    if (_fs_wait_for_readable (conn, 0) == FSIO_BLOCK)
+			return FSIO_BLOCK;
+		    continue;
+		}
+	    }
+	    _fs_connection_died (conn);
+	    return FSIO_ERROR;
+	}
+    }
+    return FSIO_READY;
+}
+
+/*
+ * Make space and return whether data have already arrived
+ */
+
+int
+_fs_start_read (FSFpePtr conn, long size, char **buf)
+{
+    int	    ret;
+    
+    conn->inNeed = size;
+    if (fs_inqueued(conn) < size)
+    {
+	if (_fs_resize (&conn->inBuf, size) != FSIO_READY)
+	{
+	    _fs_connection_died (conn);
+	    return FSIO_ERROR;
+	}
+	ret = _fs_fill (conn);
+	if (ret == FSIO_ERROR)
+	    return ret;
+	if (ret == FSIO_BLOCK || fs_inqueued(conn) < size)
+	    return FSIO_BLOCK;
+    }
+    if (buf)
+	*buf = conn->inBuf.buf + conn->inBuf.remove;
+    return FSIO_READY;
+}
+
+void
+_fs_done_read (FSFpePtr conn, long size)
+{
+    if (conn->inBuf.insert - conn->inBuf.remove < size)
+    {
+#ifdef DEBUG
+	fprintf (stderr, "_fs_done_read skipping to many bytes\n");
+#endif
+	return;
+    }
+    conn->inBuf.remove += size;
+    conn->inNeed -= size;
+    _fs_downsize (&conn->inBuf, FS_BUF_MAX);
+}
+
+long
+_fs_pad_length (long len)
+{
+    return len + padlength[len&3];
+}
+
+int
+_fs_flush (FSFpePtr conn)
+{
+    long    bytes_written;
+    long    remain;
+    
+    /* XXX - hack.  The right fix is to remember that the font server
+       has gone away when we first discovered it. */
+    if (conn->fs_fd < 0)
+	return FSIO_ERROR;
+
+    while ((remain = conn->outBuf.insert - conn->outBuf.remove) > 0)
+    {
+	bytes_written = _FontTransWrite(conn->trans_conn,
+					conn->outBuf.buf + conn->outBuf.remove,
+					(int) remain);
+	if (bytes_written > 0)
+	{
+	    conn->outBuf.remove += bytes_written;
+	}
+	else
+	{
+	    if (bytes_written == 0 || ETEST ())
+	    {
+		conn->brokenWriteTime = GetTimeInMillis () + FS_FLUSH_POLL;
+		_fs_mark_block (conn, FS_BROKEN_WRITE);
+		break;
+	    }
+	    if (!ECHECK (EINTR))
+	    {
+		_fs_connection_died (conn);
+		return FSIO_ERROR;
+	    }
+	}
+    }
+    if (conn->outBuf.remove == conn->outBuf.insert)
+    {
+	_fs_unmark_block (conn, FS_BROKEN_WRITE|FS_PENDING_WRITE);
+	if (conn->outBuf.size > FS_BUF_INC)
+	    conn->outBuf.buf = xrealloc (conn->outBuf.buf, FS_BUF_INC);
+	conn->outBuf.remove = conn->outBuf.insert = 0;
+    }
+    return FSIO_READY;
+}
+
+static int
+_fs_resize (FSBufPtr buf, long size)
+{
+    char    *new;
+    long    new_size;
+
+    if (buf->remove)
+    {
+	if (buf->remove != buf->insert)
+	{
+	    memmove (buf->buf, 
+		     buf->buf + buf->remove,
+		     buf->insert - buf->remove);
+	}
+	buf->insert -= buf->remove;
+	buf->remove = 0;
+    }
+    if (buf->size - buf->remove < size)
+    {
+	new_size = ((buf->remove + size + FS_BUF_INC) / FS_BUF_INC) * FS_BUF_INC;
+	new = xrealloc (buf->buf, new_size);
+	if (!new)
+	    return FSIO_ERROR;
+	buf->buf = new;
+	buf->size = new_size;
+    }
+    return FSIO_READY;
+}
+
+static void
+_fs_downsize (FSBufPtr buf, long size)
+{
+    if (buf->insert == buf->remove)
+    {
+	buf->insert = buf->remove = 0;
+	if (buf->size > size)
+	{
+	    buf->buf = xrealloc (buf->buf, size);
+	    buf->size = size;
+	}
+    }
+}
+
+void
+_fs_io_reinit (FSFpePtr conn)
+{
+    conn->outBuf.insert = conn->outBuf.remove = 0;
+    _fs_downsize (&conn->outBuf, FS_BUF_INC);
+    conn->inBuf.insert = conn->inBuf.remove = 0;
+    _fs_downsize (&conn->inBuf, FS_BUF_MAX);
+}
+
+Bool
+_fs_io_init (FSFpePtr conn)
+{
+    conn->outBuf.insert = conn->outBuf.remove = 0;
+    conn->outBuf.buf = xalloc (FS_BUF_INC);
+    if (!conn->outBuf.buf)
+	return FALSE;
+    conn->outBuf.size = FS_BUF_INC;
+    
+    conn->inBuf.insert = conn->inBuf.remove = 0;
+    conn->inBuf.buf = xalloc (FS_BUF_INC);
+    if (!conn->inBuf.buf)
+    {
+	xfree (conn->outBuf.buf);
+	conn->outBuf.buf = 0;
+	return FALSE;
+    }
+    conn->inBuf.size = FS_BUF_INC;
+    
+    return TRUE;
+}
+
+void
+_fs_io_fini (FSFpePtr conn)
+{
+    if (conn->outBuf.buf)
+	xfree (conn->outBuf.buf);
+    if (conn->inBuf.buf)
+	xfree (conn->inBuf.buf);
+}
+
+static int
+_fs_do_write(FSFpePtr conn, char *data, long len, long size)
+{
+    if (size == 0) {
+#ifdef DEBUG
+	fprintf(stderr, "tried to write 0 bytes \n");
+#endif
+	return FSIO_READY;
+    }
+
+    if (conn->fs_fd == -1)
+	return FSIO_ERROR;
+    
+    while (conn->outBuf.insert + size > conn->outBuf.size) 
+    {
+	if (_fs_flush (conn) < 0)
+	    return FSIO_ERROR;
+	if (_fs_resize (&conn->outBuf, size) < 0)
+	{
+	    _fs_connection_died (conn);
+	    return FSIO_ERROR;
+	}
+    }
+    memcpy (conn->outBuf.buf + conn->outBuf.insert, data, len);
+    conn->outBuf.insert += size;
+    _fs_mark_block (conn, FS_PENDING_WRITE);
+    return FSIO_READY;
+}
+
+/*
+ * Write the indicated bytes
+ */
+int
+_fs_write (FSFpePtr conn, char *data, long len)
+{
+    return _fs_do_write (conn, data, len, len);
+}
+    
+/*
+ * Write the indicated bytes adding any appropriate pad
+ */
+int
+_fs_write_pad(FSFpePtr conn, char *data, long len)
+{
+    return _fs_do_write (conn, data, len, len + padlength[len & 3]);
+}
+
+/*
+ * returns the amount of data waiting to be read
+ */
+int
+_fs_data_ready(FSFpePtr conn)
+{
+    BytesReadable_t readable;
+
+    if (_FontTransBytesReadable(conn->trans_conn, &readable) < 0)
+	return -1;
+    return readable;
+}
+
+int
+_fs_wait_for_readable(FSFpePtr conn, int ms)
+{
+    fd_set	r_mask;
+    fd_set	e_mask;
+    int         result;
+    struct timeval  tv;
+
+    for (;;) {
+	if (conn->fs_fd < 0)
+	    return FSIO_ERROR;
+	FD_ZERO(&r_mask);
+	FD_ZERO(&e_mask);
+	tv.tv_sec = ms / 1000;
+	tv.tv_usec = (ms % 1000) * 1000;
+	FD_SET(conn->fs_fd, &r_mask);
+	FD_SET(conn->fs_fd, &e_mask);
+	result = Select(conn->fs_fd + 1, &r_mask, NULL, &e_mask, &tv);
+	if (result < 0)
+	{
+	    if (ECHECK(EINTR) || ECHECK(EAGAIN))
+		continue;
+	    else
+		return FSIO_ERROR;
+	}
+	if (result == 0)
+	    return FSIO_BLOCK;
+	if (FD_ISSET(conn->fs_fd, &r_mask))
+	    return FSIO_READY;
+	return FSIO_ERROR;
+    }
+}
+
+int
+_fs_set_bit(fd_set *mask, int fd)
+{
+    FD_SET(fd, mask);
+    return fd;
+}
+
+int
+_fs_is_bit_set(fd_set *mask, int fd)
+{
+    return FD_ISSET(fd, mask);
+}
+
+void
+_fs_bit_clear(fd_set *mask, int fd)
+{
+    FD_CLR(fd, mask);
+}
+
+int
+_fs_any_bit_set(fd_set *mask)
+{
+    return XFD_ANYSET(mask);
+}
+
+void
+_fs_or_bits(fd_set *dst, fd_set *m1, fd_set *m2)
+{
+#ifdef WIN32
+    int i;
+    if (dst != m1) {
+	for (i = m1->fd_count; --i >= 0; ) {
+	    if (!FD_ISSET(m1->fd_array[i], dst))
+		FD_SET(m1->fd_array[i], dst);
+	}
+    }
+    if (dst != m2) {
+	for (i = m2->fd_count; --i >= 0; ) {
+	    if (!FD_ISSET(m2->fd_array[i], dst))
+		FD_SET(m2->fd_array[i], dst);
+	}
+    }
+#else
+    XFD_ORSET(dst, m1, m2);
+#endif
+}