mirror of
https://git.code.sf.net/p/quake/quakeforge
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973ae0ad54
This is meant for a "permanent" tear-down before freeing the memory holding the VM state or at program shutdown. As a consequence, builtin sub-systems registering resources are now required to pass a "destroy" function pointer that will be called just before the memory holding those resources is freed by the VM resource manager (ie, the manager owns the resource memory block, but each subsystem is responsible for cleaning up any resources held within that block). This even enhances thread-safety in rua_obj (there are some problems with cmd, cvar, and gib).
182 lines
3.5 KiB
C
182 lines
3.5 KiB
C
/*
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bi_cmd.c
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Command api for ruamoko
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Copyright (C) 2002 Bill Currie
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Author: Bill Currie
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Date: 2002/4/12
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include "QF/cmd.h"
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#include "QF/hash.h"
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#include "QF/progs.h"
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#include "QF/sys.h"
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#include "rua_internal.h"
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typedef struct bi_cmd_s {
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struct bi_cmd_s *next;
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char *name;
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progs_t *pr;
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pr_func_t func;
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} bi_cmd_t;
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typedef struct {
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bi_cmd_t *cmds;
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} cmd_resources_t;
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static hashtab_t *bi_cmds;
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static int bi_cmds_refs;
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static const char *
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bi_cmd_get_key (const void *c, void *unused)
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{
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return ((bi_cmd_t *)c)->name;
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}
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static void
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bi_cmd_free (void *_c, void *unused)
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{
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bi_cmd_t *c = (bi_cmd_t *) _c;
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free (c->name);
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free (c);
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}
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static void
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bi_cmd_f (void)
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{
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bi_cmd_t *cmd = Hash_Find (bi_cmds, Cmd_Argv (0));
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if (!cmd)
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Sys_Error ("bi_cmd_f: unexpected call %s", Cmd_Argv (0));
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PR_ExecuteProgram (cmd->pr, cmd->func);
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}
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static void
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bi_Cmd_AddCommand (progs_t *pr, void *_res)
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{
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__auto_type res = (cmd_resources_t *) _res;
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bi_cmd_t *cmd = malloc (sizeof (bi_cmd_t));
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char *name = strdup (P_GSTRING (pr, 0));
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pr_func_t func = P_FUNCTION (pr, 1);
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if (!cmd || !name || !Cmd_AddCommand (name, bi_cmd_f, "CSQC command")) {
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if (name)
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free (name);
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if (cmd)
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free (cmd);
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R_INT (pr) = 0;
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return;
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}
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cmd->name = name;
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cmd->func = func;
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cmd->pr = pr;
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Hash_Add (bi_cmds, cmd);
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cmd->next = res->cmds;
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res->cmds = cmd;
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R_INT (pr) = 1;
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}
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static void
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bi_cmd_clear (progs_t *pr, void *data)
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{
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cmd_resources_t *res = (cmd_resources_t *)data;
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bi_cmd_t *cmd;
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while ((cmd = res->cmds)) {
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Cmd_RemoveCommand (cmd->name);
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Hash_Del (bi_cmds, cmd->name);
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res->cmds = cmd->next;
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bi_cmd_free (cmd, 0);
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}
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}
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static void
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bi_cmd_destroy (progs_t *pr, void *data)
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{
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if (!--bi_cmds_refs) {
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Hash_DelTable (bi_cmds);
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}
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}
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static void
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bi_Cmd_Argc (progs_t *pr, void *data)
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{
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R_INT (pr) = Cmd_Argc ();
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}
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static void
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bi_Cmd_Argv (progs_t *pr, void *data)
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{
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RETURN_STRING (pr, Cmd_Argv (P_INT (pr, 0)));
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}
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static void
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bi_Cmd_Args (progs_t *pr, void *data)
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{
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RETURN_STRING (pr, Cmd_Args (P_INT (pr, 0)));
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}
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//Cmd_TokenizeString
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//Cmd_ExecuteString
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//Cmd_ForwardToServer
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#define bi(x,np,params...) {#x, bi_##x, -1, np, {params}}
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#define p(type) PR_PARAM(type)
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static builtin_t builtins[] = {
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bi(Cmd_AddCommand, 2, p(string), p(func)),
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bi(Cmd_Argc, 0),
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bi(Cmd_Argv, 1, p(int)),
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bi(Cmd_Args, 1, p(int)),
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{0}
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};
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void
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RUA_Cmd_Init (progs_t *pr, int secure)
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{
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cmd_resources_t *res = calloc (1, sizeof (cmd_resources_t));
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res->cmds = 0;
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if (!bi_cmds) {
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bi_cmds = Hash_NewTable (1021, bi_cmd_get_key, bi_cmd_free, 0,
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pr->hashctx);
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}
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bi_cmds_refs++;
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PR_Resources_Register (pr, "Cmd", res, bi_cmd_clear, bi_cmd_destroy);
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PR_RegisterBuiltins (pr, builtins, res);
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}
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