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-rw-r--r--nx-X11/lib/X11/Context.c302
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diff --git a/nx-X11/lib/X11/Context.c b/nx-X11/lib/X11/Context.c
deleted file mode 100644
index 8a078713a..000000000
--- a/nx-X11/lib/X11/Context.c
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-
-/***********************************************************
-Copyright 1987, 1988, 1990 by Digital Equipment Corporation, Maynard,
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-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 Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL 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.
-
-******************************************************************/
-
-/*
-
-Copyright 1987, 1988, 1990, 1994, 1998 The Open Group
-
-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.
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall
-not be used in advertising or otherwise to promote the sale, use or
-other dealings in this Software without prior written authorization
-from The Open Group.
-
-*/
-
-/* This module implements a simple sparse array.
-
- XSaveContext(a,b,c,d) will store d in position (a,b,c) of the array.
- XFindContext(a,b,c,&d) will set d to be the value in position (a,b,c).
- XDeleteContext(a,b,c) will delete the entry in (a,b,c).
-
- a is a display id, b is a resource id, and c is a Context. d is just an
- XPointer. This code will work with any range of parameters, but is geared
- to be most efficient with very few (one or two) different a's.
-
-*/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include "Xlibint.h"
-#include "Xutil.h"
-#ifdef XTHREADS
-#include "locking.h"
-#endif
-
-#define INITHASHMASK 63 /* Number of entries originally in the hash table. */
-
-typedef struct _TableEntryRec { /* Stores one entry. */
- XID rid;
- XContext context;
- XPointer data;
- struct _TableEntryRec *next;
-} TableEntryRec, *TableEntry;
-
-typedef struct _XContextDB { /* Stores hash table for one display. */
- TableEntry *table; /* Pointer to array of hash entries. */
- int mask; /* Current size of hash table minus 1. */
- int numentries; /* Number of entries currently in table. */
-#ifdef XTHREADS
- LockInfoRec linfo;
-#endif
-} DBRec, *DB;
-
-#ifdef MOTIFBC
-static DB NullDB = (DB)0;
-#endif
-
-/* Given an XID and a context, returns a value between 0 and HashSize-1.
- Currently, this requires that HashSize be a power of 2.
-*/
-
-#define Hash(db,rid,context) \
- (db)->table[(((rid) << 1) + context) & (db)->mask]
-
-/* Resize the given db */
-
-static void ResizeTable(DB db)
-{
- TableEntry *otable;
- register TableEntry entry, next, *pold, *head;
- register int i, j;
-
- otable = db->table;
- for (i = INITHASHMASK+1; (i + i) < db->numentries; )
- i += i;
- db->table = Xcalloc(i, sizeof(TableEntry));
- if (!db->table) {
- db->table = otable;
- return;
- }
- j = db->mask + 1;
- db->mask = i - 1;
- for (pold = otable ; --j >= 0; pold++) {
- for (entry = *pold; entry; entry = next) {
- next = entry->next;
- head = &Hash(db, entry->rid, entry->context);
- entry->next = *head;
- *head = entry;
- }
- }
- Xfree(otable);
-}
-
-static void _XFreeContextDB(Display *display)
-{
- register DB db;
- register int i;
- register TableEntry *pentry, entry, next;
-
- db = display->context_db;
- if (db) {
- for (i = db->mask + 1, pentry = db->table ; --i >= 0; pentry++) {
- for (entry = *pentry; entry; entry = next) {
- next = entry->next;
- Xfree(entry);
- }
- }
- Xfree(db->table);
- _XFreeMutex(&db->linfo);
- Xfree(db);
- }
-}
-
-/* Public routines. */
-
-/* Save the given value of data to correspond with the keys XID and context.
- Returns nonzero error code if an error has occured, 0 otherwise.
- Possible errors are Out-of-memory.
-*/
-
-int XSaveContext(
- Display *display,
- register XID rid,
- register XContext context,
- _Xconst char* data)
-{
- DB *pdb;
- register DB db;
- TableEntry *head;
- register TableEntry entry;
-
-#ifdef MOTIFBC
- if (!display) {
- pdb = &NullDB;
- db = *pdb;
- } else
-#endif
- {
- LockDisplay(display);
- pdb = &display->context_db;
- db = *pdb;
- UnlockDisplay(display);
- }
- if (!db) {
- db = Xmalloc(sizeof(DBRec));
- if (!db)
- return XCNOMEM;
- db->mask = INITHASHMASK;
- db->table = Xcalloc(db->mask + 1, sizeof(TableEntry));
- if (!db->table) {
- Xfree(db);
- return XCNOMEM;
- }
- db->numentries = 0;
- _XCreateMutex(&db->linfo);
-#ifdef MOTIFBC
- if (!display) *pdb = db; else
-#endif
- {
- LockDisplay(display);
- *pdb = db;
- display->free_funcs->context_db = _XFreeContextDB;
- UnlockDisplay(display);
- }
- }
- _XLockMutex(&db->linfo);
- head = &Hash(db, rid, context);
- _XUnlockMutex(&db->linfo);
- for (entry = *head; entry; entry = entry->next) {
- if (entry->rid == rid && entry->context == context) {
- entry->data = (XPointer)data;
- return 0;
- }
- }
- entry = Xmalloc(sizeof(TableEntryRec));
- if (!entry)
- return XCNOMEM;
- entry->rid = rid;
- entry->context = context;
- entry->data = (XPointer)data;
- entry->next = *head;
- *head = entry;
- _XLockMutex(&db->linfo);
- db->numentries++;
- if (db->numentries > (db->mask << 2))
- ResizeTable(db);
- _XUnlockMutex(&db->linfo);
- return 0;
-}
-
-
-
-/* Given an XID and context, returns the associated data. Note that data
- here is a pointer since it is a return value. Returns nonzero error code
- if an error has occured, 0 otherwise. Possible errors are Entry-not-found.
-*/
-
-int XFindContext(Display *display, XID rid, XContext context, XPointer *data)
-{
- register DB db;
- register TableEntry entry;
-
-#ifdef MOTIFBC
- if (!display) db = NullDB; else
-#endif
- {
- LockDisplay(display);
- db = display->context_db;
- UnlockDisplay(display);
- }
- if (!db)
- return XCNOENT;
- _XLockMutex(&db->linfo);
- for (entry = Hash(db, rid, context); entry; entry = entry->next)
- {
- if (entry->rid == rid && entry->context == context) {
- *data = (XPointer)entry->data;
- _XUnlockMutex(&db->linfo);
- return 0;
- }
- }
- _XUnlockMutex(&db->linfo);
- return XCNOENT;
-}
-
-
-
-/* Deletes the entry for the given XID and context from the datastructure.
- This returns the same thing that FindContext would have returned if called
- with the same arguments.
-*/
-
-int XDeleteContext(Display *display, XID rid, XContext context)
-{
- register DB db;
- register TableEntry entry, *prev;
-
-#ifdef MOTIFBC
- if (!display) db = NullDB; else
-#endif
- {
- LockDisplay(display);
- db = display->context_db;
- UnlockDisplay(display);
- }
- if (!db)
- return XCNOENT;
- _XLockMutex(&db->linfo);
- for (prev = &Hash(db, rid, context);
- (entry = *prev);
- prev = &entry->next) {
- if (entry->rid == rid && entry->context == context) {
- *prev = entry->next;
- Xfree(entry);
- db->numentries--;
- if (db->numentries < db->mask && db->mask > INITHASHMASK)
- ResizeTable(db);
- _XUnlockMutex(&db->linfo);
- return 0;
- }
- }
- _XUnlockMutex(&db->linfo);
- return XCNOENT;
-}
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