WINCHAIN - a framework allowing multiple processors between core and winport

This is the code I built trying to figure out the large window size issue.
It completely compiles out if not needed (see -DWINCHAIN in hints/macos10.7)
and except for one call during setup has zero overhead if compiled in and
not used.  See window.doc for more info.

Defs for UNUSED parms.  I know this has been controversial, so use is isolated
to the chain code and windows.c (where it shouldn't be intrusive and saves about
50 warnings).

Hints file for 10.7, but the build process still needs to be migrated from
the branch.

win/chain/wc_chainout.c

@@ -0,0 +1,737 @@
+/* NetHack 3.5	wc_chainout.c	$Date$  $Revision$ */
+/* Copyright (c) Kenneth Lorber, 2012				  */
+/* NetHack may be freely redistributed.  See license for details. */
+
+/* -chainout is an internal processor that changes the flow from chain_procs
+ * back to window_procs. */
+
+#include "hack.h"
+
+struct chainout_data {
+	struct window_procs *nprocs;
+#if 0
+	void *ndata;
+
+#endif
+	int linknum;
+};
+
+void *
+chainout_procs_chain(cmd, n, me, nextprocs, nextdata)
+	int cmd;
+	int n;
+	void *me;
+	void *nextprocs;
+	void *nextdata UNUSED;
+{
+	switch(cmd){
+	case WINCHAIN_ALLOC: {
+		struct chainout_data *tdp = calloc(1, sizeof(struct chainout_data));
+		tdp->linknum = n;
+		return tdp;
+	}
+	case WINCHAIN_INIT: {
+		struct chainout_data *tdp = me;
+		tdp->nprocs = nextprocs;
+		return tdp;
+	}
+	default:
+		raw_printf("chainout_procs_chain: bad cmd\n");
+		exit(EXIT_FAILURE);
+	}
+}
+
+/* XXX if we don't need this, take it out of the table */
+void
+chainout_procs_init(dir)
+    int dir UNUSED;
+{
+}
+
+/***
+ *** winprocs
+ ***/
+
+void
+chainout_init_nhwindows(vp, argcp, argv)
+    void *vp;
+    int *argcp;
+    char **argv;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_init_nhwindows)(argcp, argv);
+}
+
+
+void
+chainout_player_selection(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_player_selection)();
+}
+
+void
+chainout_askname(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_askname)();
+}
+
+void
+chainout_get_nh_event(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_get_nh_event)();
+}
+
+void
+chainout_exit_nhwindows(vp, str)
+    void *vp;
+    const char *str;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_exit_nhwindows)(str);
+}
+
+void
+chainout_suspend_nhwindows(vp, str)
+    void *vp;
+    const char *str;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_suspend_nhwindows)(str);
+}
+
+void
+chainout_resume_nhwindows(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_resume_nhwindows)();
+}
+
+winid
+chainout_create_nhwindow(vp, type)
+    void *vp;
+    int type;
+{
+	struct chainout_data *tdp = vp;
+	winid rv;
+
+	rv = (*tdp->nprocs->win_create_nhwindow)(type);
+
+	return rv;
+}
+
+void
+chainout_clear_nhwindow(vp, window)
+    void *vp;
+    winid window;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_clear_nhwindow)(window);
+}
+
+void
+chainout_display_nhwindow(vp, window, blocking)
+    void *vp;
+    winid window;
+    BOOLEAN_P blocking;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_display_nhwindow)(window, blocking);
+}
+
+void
+chainout_destroy_nhwindow(vp, window)
+    void *vp;
+    winid window;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_destroy_nhwindow)(window);
+}
+
+void
+chainout_curs(vp, window, x, y)
+    void *vp;
+    winid window;
+    int x;
+    int y;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_curs)(window, x, y);
+}
+
+void
+chainout_putstr(vp, window, attr, str)
+    void *vp;
+    winid window;
+    int attr;
+    const char *str;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_putstr)(window, attr, str);
+}
+
+void
+chainout_putmixed(vp, window, attr, str)
+    void *vp;
+    winid window;
+    int attr;
+    const char *str;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_putmixed)(window, attr, str);
+}
+
+void
+chainout_display_file(vp, fname, complain)
+    void *vp;
+    const char *fname;
+    boolean complain;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_display_file)(fname, complain);
+}
+
+void
+chainout_start_menu(vp, window)
+    void *vp;
+    winid window;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_start_menu)(window);
+}
+
+void
+chainout_add_menu(vp, window, glyph, identifier, ch, gch, attr, str, preselected)
+    void *vp;
+    winid window;       /* window to use, must be of type NHW_MENU */
+    int glyph;          /* glyph to display with item (unused) */
+    const anything *identifier; /* what to return if selected */
+    char ch;            /* keyboard accelerator (0 = pick our own) */
+    char gch;           /* group accelerator (0 = no group) */
+    int attr;           /* attribute for string (like tty_putstr()) */
+    const char *str;    /* menu string */
+    boolean preselected; /* item is marked as selected */
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_add_menu)(window, glyph, identifier,
+		ch, gch, attr, str, preselected);
+}
+
+void
+chainout_end_menu(vp, window, prompt)
+    void *vp;
+    winid window;
+    const char *prompt;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_end_menu)(window, prompt);
+}
+
+int
+chainout_select_menu(vp, window, how, menu_list)
+    void *vp;
+    winid window;
+    int how;
+    menu_item **menu_list;
+{
+	struct chainout_data *tdp = vp;
+	int rv;
+
+	rv = (*tdp->nprocs->win_select_menu)(window, how, (void *)menu_list);
+
+	return rv;
+}
+
+char
+chainout_message_menu(vp, let, how, mesg)
+    void *vp;
+    char let;
+    int how;
+    const char *mesg;
+{
+	struct chainout_data *tdp = vp;
+	char rv;
+
+	rv = (*tdp->nprocs->win_message_menu)(let, how, mesg);
+
+	return rv;
+}
+
+void
+chainout_update_inventory(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_update_inventory)();
+}
+
+void
+chainout_mark_synch(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_mark_synch)();
+}
+
+void
+chainout_wait_synch(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_wait_synch)();
+}
+
+#ifdef CLIPPING
+void
+chainout_cliparound(vp, x, y)
+    void *vp;
+    int x;
+    int y;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_cliparound)(x, y);
+}
+#endif
+
+#ifdef POSITIONBAR
+void
+chainout_update_positionbar(vp, posbar)
+    void *vp;
+    char *posbar;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_update_positionbar)(posbar);
+}
+#endif
+
+void
+chainout_print_glyph(vp, window, x, y, glyph)
+    void *vp;
+    winid window;
+    xchar x, y;
+    int glyph;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_print_glyph)(window, x, y, glyph);
+}
+
+void
+chainout_raw_print(vp, str)
+    void *vp;
+    const char *str;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_raw_print)(str);
+}
+
+void
+chainout_raw_print_bold(vp, str)
+    void *vp;
+    const char *str;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_raw_print_bold)(str);
+}
+
+int
+chainout_nhgetch(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+	int rv;
+
+	rv = (*tdp->nprocs->win_nhgetch)();
+
+	return rv;
+}
+
+int
+chainout_nh_poskey(vp, x, y, mod)
+    void *vp;
+    int *x;
+    int *y;
+    int *mod;
+{
+	struct chainout_data *tdp = vp;
+	int rv;
+
+	rv = (*tdp->nprocs->win_nh_poskey)(x, y, mod);
+
+	return rv;
+}
+
+void
+chainout_nhbell(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_nhbell)();
+}
+
+int
+chainout_doprev_message(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+	int rv;
+
+	rv = (*tdp->nprocs->win_doprev_message)();
+
+	return rv;
+}
+
+char
+chainout_yn_function(vp, query, resp, def)
+	void *vp;
+	const char *query, *resp;
+	char def;
+{
+	struct chainout_data *tdp = vp;
+	int rv;
+
+	rv = (*tdp->nprocs->win_yn_function)(query, resp, def);
+
+	return rv;
+}
+
+void
+chainout_getlin(vp, query, bufp)
+	void *vp;
+        const char *query;
+        char *bufp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_getlin)(query, bufp);
+}
+
+
+int
+chainout_get_ext_cmd(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+	int rv;
+
+	rv = (*tdp->nprocs->win_get_ext_cmd)();
+
+	return rv;
+}
+
+void
+chainout_number_pad(vp, state)
+	void *vp;
+	int state;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_number_pad)(state);
+}
+
+void
+chainout_delay_output(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_delay_output)();
+}
+
+#ifdef CHANGE_COLOR
+void
+chainout_change_color(vp, color, value, reverse)
+	void *vp;
+	int color;
+	long value;
+	int reverse;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_change_color)(color, value, reverse);
+}
+
+#ifdef MAC
+void
+chainout_change_background(vp, bw)
+	void *vp;
+	int bw;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_change_background)(bw);
+}
+
+short
+chainout_set_font_name(vp, window, font)
+	void *vp;
+	winid window;
+	char *font;
+{
+	struct chainout_data *tdp = vp;
+	short rv;
+
+	rv = (*tdp->nprocs->win_set_font_name)(window, font);
+
+	return rv;
+}
+#endif
+
+char *trace_get_color_string(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+	char *rv;
+
+	rv = (*tdp->nprocs->win_get_color_string)();
+
+	return rv;
+}
+
+#endif
+
+/* other defs that really should go away (they're tty specific) */
+void
+chainout_start_screen(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_start_screen)();
+}
+
+void
+chainout_end_screen(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_end_screen)();
+}
+
+void
+chainout_outrip(vp, tmpwin, how)
+    void *vp;
+    winid tmpwin;
+    int how;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_outrip)(tmpwin, how);
+}
+
+void
+chainout_preference_update(vp, pref)
+    void *vp;
+    const char *pref;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_preference_update)(pref);
+}
+
+
+char *
+chainout_getmsghistory(vp, init)
+    void *vp;
+boolean init;
+{
+	struct chainout_data *tdp = vp;
+	char *rv;
+
+	rv = (*tdp->nprocs->win_getmsghistory)(init);
+
+	return rv;
+}
+
+void
+chainout_putmsghistory(vp, msg, is_restoring)
+    void *vp;
+const char *msg;
+boolean is_restoring;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_putmsghistory)(msg, is_restoring);
+}
+
+#ifdef STATUS_VIA_WINDOWPORT
+void
+chainout_status_init(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_status_init)();
+}
+
+void
+chainout_status_finish(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_status_finish)();
+}
+
+void
+chainout_status_enablefield(vp, fieldidx, nm, fmt, enable)
+    void *vp;
+int fieldidx;
+const char *nm;
+const char *fmt;
+boolean enable;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_status_enablefield)(fieldidx, nm, fmt, enable);
+}
+
+void
+chainout_status_update(vp, idx, ptr, chg, percent)
+    void *vp;
+int idx, chg, percent;
+genericptr_t ptr;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_status_update)(idx, ptr, chg, percent);
+}
+
+# ifdef STATUS_HILITES
+void
+chainout_status_threshold(vp, fldidx, thresholdtype, threshold, behavior, under, over)
+    void *vp;
+int fldidx,thresholdtype;
+int behavior, under, over;
+anything threshold;
+{
+	struct chainout_data *tdp = vp;
+
+	(*tdp->nprocs->win_status_threshold)(fldidx, thresholdtype,
+			threshold, behavior, under, over);
+}
+# endif
+#endif
+
+boolean
+chainout_can_suspend(vp)
+    void *vp;
+{
+	struct chainout_data *tdp = vp;
+	boolean rv;
+
+	rv = (*tdp->nprocs->win_can_suspend)();
+
+	return rv;
+}
+
+struct chain_procs chainout_procs = {
+    "-chainout",
+    0,	/* wincap */
+    0,  /* wincap2 */
+/*
+XXX problem - the above need to come from the real window port, possibly
+modified.  May need to do something to call an additional init fn later
+or if this is the only place like this the choose_windows fn can do the fixup
+(but not if the value can be modified by the stack?)  TBD
+*/
+    chainout_init_nhwindows,
+    chainout_player_selection,
+    chainout_askname,
+    chainout_get_nh_event,
+    chainout_exit_nhwindows,
+    chainout_suspend_nhwindows,
+    chainout_resume_nhwindows,
+    chainout_create_nhwindow,
+    chainout_clear_nhwindow,
+    chainout_display_nhwindow,
+    chainout_destroy_nhwindow,
+    chainout_curs,
+    chainout_putstr,
+    chainout_putmixed,
+    chainout_display_file,
+    chainout_start_menu,
+    chainout_add_menu,
+    chainout_end_menu,
+    chainout_select_menu,
+    chainout_message_menu,
+    chainout_update_inventory,
+    chainout_mark_synch,
+    chainout_wait_synch,
+#ifdef CLIPPING
+    chainout_cliparound,
+#endif
+#ifdef POSITIONBAR
+    chainout_update_positionbar,
+#endif
+    chainout_print_glyph,
+    chainout_raw_print,
+    chainout_raw_print_bold,
+    chainout_nhgetch,
+    chainout_nh_poskey,
+    chainout_nhbell,
+    chainout_doprev_message,
+    chainout_yn_function,
+    chainout_getlin,
+    chainout_get_ext_cmd,
+    chainout_number_pad,
+    chainout_delay_output,
+#ifdef CHANGE_COLOR
+    chainout_change_color,
+#ifdef MAC
+    chainout_change_background,
+    chainout_set_font_name,
+#endif
+    chainout_get_color_string,
+#endif
+
+    chainout_start_screen,
+    chainout_end_screen,
+
+    chainout_outrip,
+    chainout_preference_update,
+    chainout_getmsghistory,
+    chainout_putmsghistory,
+#ifdef STATUS_VIA_WINDOWPORT
+    chainout_status_init,
+    chainout_status_finish,
+    chainout_status_enablefield,
+    chainout_status_update,
+# ifdef STATUS_HILITES
+    chainout_status_threshold,
+# endif
+#endif
+    chainout_can_suspend,
+};