diff options
Diffstat (limited to 'generic/tkGC.c')
| -rw-r--r-- | generic/tkGC.c | 60 |
1 files changed, 58 insertions, 2 deletions
diff --git a/generic/tkGC.c b/generic/tkGC.c index b719137..e8b4c2d 100644 --- a/generic/tkGC.c +++ b/generic/tkGC.c @@ -10,7 +10,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tkGC.c,v 1.3 1999/04/16 01:51:14 stanton Exp $ + * RCS: @(#) $Id: tkGC.c,v 1.4 2002/04/12 10:02:40 hobbs Exp $ */ #include "tkPort.h" @@ -84,7 +84,7 @@ Tk_GetGC(tkwin, valueMask, valuePtr) Drawable d, freeDrawable; TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr; - if (!dispPtr->gcInit) { + if (dispPtr->gcInit <= 0) { GCInit(dispPtr); } @@ -300,6 +300,14 @@ Tk_FreeGC(display, gc) if (!dispPtr->gcInit) { panic("Tk_FreeGC called before Tk_GetGC"); } + if (dispPtr->gcInit < 0) { + /* + * The GCCleanup has been called, and remaining GCs have been + * freed. This may still get called by other things shutting + * down, but the GCs should no longer be in use. + */ + return; + } idHashPtr = Tcl_FindHashEntry(&dispPtr->gcIdTable, (char *) gc); if (idHashPtr == NULL) { @@ -319,6 +327,51 @@ Tk_FreeGC(display, gc) /* *---------------------------------------------------------------------- * + * TkGCCleanup -- + * + * Frees the structures used for GC management. + * We need to have it called near the end, when other cleanup that + * calls Tk_FreeGC is all done. + * + * Results: + * None. + * + * Side effects: + * GC resources are freed. + * + *---------------------------------------------------------------------- + */ + +void +TkGCCleanup(dispPtr) + TkDisplay *dispPtr; /* display to clean up resources in */ +{ + Tcl_HashEntry *entryPtr; + Tcl_HashSearch search; + TkGC *gcPtr; + + for (entryPtr = Tcl_FirstHashEntry(&dispPtr->gcIdTable, &search); + entryPtr != NULL; + entryPtr = Tcl_NextHashEntry(&search)) { + gcPtr = (TkGC *) Tcl_GetHashValue(entryPtr); + /* + * This call is not needed, as it is only used on Unix to restore + * the Id to the stack pool, and we don't want to use them anymore. + * Tk_FreeXId(gcPtr->display, (XID) XGContextFromGC(gcPtr->gc)); + */ + XFreeGC(gcPtr->display, gcPtr->gc); + Tcl_DeleteHashEntry(gcPtr->valueHashPtr); + Tcl_DeleteHashEntry(entryPtr); + ckfree((char *) gcPtr); + } + Tcl_DeleteHashTable(&dispPtr->gcValueTable); + Tcl_DeleteHashTable(&dispPtr->gcIdTable); + dispPtr->gcInit = -1; +} + +/* + *---------------------------------------------------------------------- + * * GCInit -- * * Initialize the structures used for GC management. @@ -336,6 +389,9 @@ static void GCInit(dispPtr) TkDisplay *dispPtr; { + if (dispPtr->gcInit < 0) { + panic("called GCInit after GCCleanup"); + } dispPtr->gcInit = 1; Tcl_InitHashTable(&dispPtr->gcValueTable, sizeof(ValueKey)/sizeof(int)); Tcl_InitHashTable(&dispPtr->gcIdTable, TCL_ONE_WORD_KEYS); |