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Annotation of 43BSD/contrib/X/Xlib/XCloseDisplay.c, revision 1.1.1.1

1.1       root        1: #include <X/mit-copyright.h>
                      2: 
                      3: /* $Header: XCloseDisplay.c,v 10.4 86/02/01 15:30:31 tony Rel $ */
                      4: /* Copyright    Massachusetts Institute of Technology    1985  */
                      5: 
                      6: #include "XlibInternal.h"
                      7: 
                      8: /* 
                      9:  * XCloseDisplay - XSync the connection to the X Server, close the connection,
                     10:  * and free all associated storage.  Signals must be masked out during this
                     11:  * operation to guarantee atomicity.
                     12:  */
                     13: XCloseDisplay (dpy)
                     14:        register Display *dpy;
                     15: {
                     16:        register int sig_mask;
                     17:        
                     18:        /* 
                     19:         * Mask out all signals so that the library internal state can
                     20:         * be sync'ed with the rest of the world.  We don't want to be
                     21:         * interupted while we are flushing and freeing buffers.
                     22:         */
                     23:        sig_mask = sigsetmask(-1);
                     24:        XSync(TRUE);
                     25:        if (close(dpy->fd) == -1) {
                     26:                /* Argh! someone already closed the descriptor! */
                     27:                _XIOError(_XlibCurrentDisplay);
                     28:        }
                     29:        sigsetmask(sig_mask);           /* Return signals to normal. */
                     30:        if (dpy->displayname) free(dpy->displayname);
                     31:        free(dpy->buffer);
                     32:        free(dpy);
                     33: }

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