mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-19 00:51:51 +00:00
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).
276 lines
6.1 KiB
C
276 lines
6.1 KiB
C
/*
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bi_cvar.c
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CSQC cvar builtins
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Copyright (C) 1996-1997 Id Software, Inc.
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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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#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 <stdlib.h>
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#include "QF/cvar.h"
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#include "QF/mathlib.h"
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#include "QF/progs.h"
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#include "QF/va.h"
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#include "QF/simd/types.h"
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#include "rua_internal.h"
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typedef struct bi_alias_s {
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struct bi_alias_s *next;
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char *name;
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} bi_alias_t;
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typedef struct {
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bi_alias_t *aliases;
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} cvar_resources_t;
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static void
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bi_alias_free (void *_a, void *unused)
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{
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bi_alias_t *a = (bi_alias_t *) _a;
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free (a->name);
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free (a);
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}
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static void
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bi_cvar_clear (progs_t *pr, void *_res)
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{
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cvar_resources_t *res = (cvar_resources_t *) _res;
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bi_alias_t *alias;
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while ((alias = res->aliases)) {
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Cvar_RemoveAlias (alias->name);
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res->aliases = alias->next;
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bi_alias_free (alias, 0);
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}
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}
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static void
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bi_cvar_destroy (progs_t *pr, void *_res)
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{
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}
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static void
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bi_Cvar_MakeAlias (progs_t *pr, void *_res)
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{
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__auto_type res = (cvar_resources_t *) _res;
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const char *alias_name = P_GSTRING (pr, 0);
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const char *cvar_name = P_GSTRING (pr, 1);
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cvar_t *cvar = Cvar_FindVar (cvar_name);
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bi_alias_t *alias;
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R_INT (pr) = 0; // assume failure
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if (!cvar) // allow aliasing of aliases
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cvar = Cvar_FindAlias (cvar_name);
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if (cvar && Cvar_MakeAlias (alias_name, cvar)) {
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alias = malloc (sizeof (bi_alias_t));
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alias->name = strdup (alias_name);
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alias->next = res->aliases;
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res->aliases = alias;
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R_INT (pr) = 1;
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}
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}
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static void
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bi_Cvar_RemoveAlias (progs_t *pr, void *_res)
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{
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__auto_type res = (cvar_resources_t *) _res;
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const char *alias_name = P_GSTRING (pr, 0);
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bi_alias_t **a;
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R_INT (pr) = 0; // assume failure
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for (a = &res->aliases; *a; a = &(*a)->next) {
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bi_alias_t *alias = *a;
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if (!strcmp (alias_name, alias->name)) {
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*a = (*a)->next;
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if (Cvar_RemoveAlias (alias->name))
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R_INT (pr) = 1;
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bi_alias_free (alias, 0);
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}
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}
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}
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static void
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bi_Cvar_SetString (progs_t *pr, void *_res)
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{
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const char *varname = P_GSTRING (pr, 0);
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const char *val = P_GSTRING (pr, 1);
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cvar_t *var = Cvar_FindVar (varname);
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if (!var)
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var = Cvar_FindAlias (varname);
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if (var)
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Cvar_SetVar (var, val);
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}
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static void
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bi_Cvar_SetInteger (progs_t *pr, void *_res)
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{
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const char *varname = P_GSTRING (pr, 0);
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int val = P_INT (pr, 1);
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cvar_t *var = Cvar_FindVar (varname);
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if (!var)
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var = Cvar_FindAlias (varname);
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if (var)
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Cvar_SetVar (var, va (0, "%d", val));
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}
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static void
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bi_Cvar_SetFloat (progs_t *pr, void *_res)
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{
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const char *varname = P_GSTRING (pr, 0);
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float val = P_FLOAT (pr, 1);
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cvar_t *var = Cvar_FindVar (varname);
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if (!var)
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var = Cvar_FindAlias (varname);
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if (var)
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Cvar_SetVar (var, va (0, "%g", val));
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}
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static void
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bi_Cvar_SetVector (progs_t *pr, void *_res)
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{
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const char *varname = P_GSTRING (pr, 0);
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float *val = P_VECTOR (pr, 1);
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cvar_t *var = Cvar_FindVar (varname);
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if (!var)
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var = Cvar_FindAlias (varname);
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if (var)
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Cvar_SetVar (var, va (0, "%g %g %g", val[0], val[1], val[2]));
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}
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static void
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bi_Cvar_GetString (progs_t *pr, void *_res)
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{
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const char *varname = P_GSTRING (pr, 0);
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cvar_t *var = Cvar_FindVar (varname);
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if (!var)
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var = Cvar_FindAlias (varname);
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if (var)
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RETURN_STRING (pr, Cvar_VarString (var));
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else
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RETURN_STRING (pr, "");
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}
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static void
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bi_Cvar_GetInteger (progs_t *pr, void *_res)
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{
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const char *varname = P_GSTRING (pr, 0);
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cvar_t *var = Cvar_FindVar (varname);
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R_INT (pr) = 0;
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if (!var)
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var = Cvar_FindAlias (varname);
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if (!var || var->value.type != &cexpr_int)
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return;
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R_INT (pr) = *(int *) var->value.value;
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}
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static void
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bi_Cvar_GetFloat (progs_t *pr, void *_res)
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{
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const char *varname = P_GSTRING (pr, 0);
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cvar_t *var = Cvar_FindVar (varname);
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R_FLOAT (pr) = 0;
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if (!var)
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var = Cvar_FindAlias (varname);
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if (!var || var->value.type != &cexpr_float)
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return;
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R_INT (pr) = *(float *) var->value.value;
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}
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static void
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bi_Cvar_GetVector (progs_t *pr, void *_res)
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{
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const char *varname = P_GSTRING (pr, 0);
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cvar_t *var = Cvar_FindVar (varname);
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if (!var)
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var = Cvar_FindAlias (varname);
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if (var && var->value.type == &cexpr_vector)
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RETURN_VECTOR (pr, *(vec4f_t *) var->value.value);
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else
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VectorZero (R_VECTOR (pr));
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}
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static void
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bi_Cvar_Toggle (progs_t *pr, void *_res)
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{
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const char *varname = P_GSTRING (pr, 0);
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cvar_t *var;
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var = Cvar_FindVar (varname);
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if (!var)
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var = Cvar_FindAlias (varname);
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if (var && var->value.type == &cexpr_int) {
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*(int *) var->value.value = !*(int *) var->value.value;
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}
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}
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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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#define P(a, s) { .size = (s), .alignment = BITOP_LOG2 (a), }
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static builtin_t builtins[] = {
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bi(Cvar_MakeAlias, 2, p(string), p(string)),
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bi(Cvar_RemoveAlias, 1, p(string)),
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bi(Cvar_SetFloat, 2, p(string), p(float)),
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bi(Cvar_SetInteger, 2, p(string), p(int)),
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bi(Cvar_SetVector, 2, p(string), p(vector)),
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bi(Cvar_SetString, 2, p(string), p(string)),
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bi(Cvar_GetFloat, 1, p(string)),
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bi(Cvar_GetInteger, 1, p(string)),
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bi(Cvar_GetVector, 1, p(string)),
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bi(Cvar_GetString, 1, p(string)),
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bi(Cvar_Toggle, 1, p(string)),
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{0}
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};
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void
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RUA_Cvar_Init (progs_t *pr, int secure)
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{
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cvar_resources_t *res = calloc (1, sizeof (cvar_resources_t));
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res->aliases = 0;
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PR_Resources_Register (pr, "Cvar", res, bi_cvar_clear, bi_cvar_destroy);
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PR_RegisterBuiltins (pr, builtins, res);
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}
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