mirror of https://github.com/lua/lua
added check for conversion 'obj2gco' (and corrections for small
problems detected by this check)
This commit is contained in:
Roberto Ierusalimschy
parent
9aec500a26
commit
56137d58ff
6
lapi.c
6
lapi.c
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@ -1,5 +1,5 @@
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/*
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** $Id: lapi.c,v 2.225 2014/07/15 21:26:50 roberto Exp roberto $
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** $Id: lapi.c,v 2.226 2014/07/17 13:53:37 roberto Exp roberto $
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** Lua API
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** See Copyright Notice in lua.h
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*/
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@ -820,7 +820,7 @@ LUA_API int lua_setmetatable (lua_State *L, int objindex) {
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case LUA_TUSERDATA: {
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uvalue(obj)->metatable = mt;
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if (mt) {
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luaC_objbarrier(L, rawuvalue(obj), mt);
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luaC_objbarrier(L, uvalue(obj), mt);
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luaC_checkfinalizer(L, gcvalue(obj), mt);
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}
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break;
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@ -958,7 +958,7 @@ LUA_API int lua_load (lua_State *L, lua_Reader reader, void *data,
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const TValue *gt = luaH_getint(reg, LUA_RIDX_GLOBALS);
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/* set global table as 1st upvalue of 'f' (may be LUA_ENV) */
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setobj(L, f->upvals[0]->v, gt);
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luaC_barrier(L, f->upvals[0], gt);
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luaC_upvalbarrier(L, f->upvals[0]);
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}
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}
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lua_unlock(L);
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13
lgc.c
13
lgc.c
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@ -1,5 +1,5 @@
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/*
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** $Id: lgc.c,v 2.184 2014/06/30 19:48:08 roberto Exp roberto $
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** $Id: lgc.c,v 2.185 2014/07/17 17:27:49 roberto Exp roberto $
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** Garbage Collector
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** See Copyright Notice in lua.h
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*/
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@ -83,6 +83,9 @@
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#define markobject(g,t) \
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{ if ((t) && iswhite(obj2gco(t))) reallymarkobject(g, obj2gco(t)); }
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#define markstring(g,t) \
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{ if ((t) && iswhite(ts2gco(t))) reallymarkobject(g, ts2gco(t)); }
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static void reallymarkobject (global_State *g, GCObject *o);
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@ -126,7 +129,7 @@ static void removeentry (Node *n) {
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static int iscleared (global_State *g, const TValue *o) {
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if (!iscollectable(o)) return 0;
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else if (ttisstring(o)) {
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markobject(g, rawtsvalue(o)); /* strings are `values', so are never weak */
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markobject(g, tsvalue(o)); /* strings are `values', so are never weak */
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return 0;
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}
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else return iswhite(gcvalue(o));
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@ -448,15 +451,15 @@ static int traverseproto (global_State *g, Proto *f) {
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int i;
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if (f->cache && iswhite(obj2gco(f->cache)))
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f->cache = NULL; /* allow cache to be collected */
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markobject(g, f->source);
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markstring(g, f->source);
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for (i = 0; i < f->sizek; i++) /* mark literals */
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markvalue(g, &f->k[i]);
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for (i = 0; i < f->sizeupvalues; i++) /* mark upvalue names */
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markobject(g, f->upvalues[i].name);
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markstring(g, f->upvalues[i].name);
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for (i = 0; i < f->sizep; i++) /* mark nested protos */
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markobject(g, f->p[i]);
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for (i = 0; i < f->sizelocvars; i++) /* mark local-variable names */
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markobject(g, f->locvars[i].varname);
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markstring(g, f->locvars[i].varname);
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return sizeof(Proto) + sizeof(Instruction) * f->sizecode +
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sizeof(Proto *) * f->sizep +
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sizeof(TValue) * f->sizek +
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6
llex.c
6
llex.c
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@ -1,5 +1,5 @@
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/*
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** $Id: llex.c,v 2.77 2014/05/11 14:45:43 roberto Exp roberto $
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** $Id: llex.c,v 2.78 2014/05/21 15:22:02 roberto Exp roberto $
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** Lexical Analyzer
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** See Copyright Notice in lua.h
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*/
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@ -67,10 +67,10 @@ static void save (LexState *ls, int c) {
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void luaX_init (lua_State *L) {
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int i;
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TString *e = luaS_new(L, LUA_ENV); /* create env name */
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luaC_fix(L, obj2gco(e)); /* never collect this name */
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luaC_fix(L, ts2gco(e)); /* never collect this name */
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for (i=0; i<NUM_RESERVED; i++) {
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TString *ts = luaS_new(L, luaX_tokens[i]);
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luaC_fix(L, obj2gco(ts)); /* reserved words are never collected */
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luaC_fix(L, ts2gco(ts)); /* reserved words are never collected */
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ts->tsv.extra = cast_byte(i+1); /* reserved word */
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}
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}
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@ -1,5 +1,5 @@
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/*
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** $Id: lobject.h,v 2.95 2014/07/17 17:09:50 roberto Exp roberto $
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** $Id: lobject.h,v 2.96 2014/07/17 17:27:49 roberto Exp roberto $
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** Type definitions for Lua objects
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** See Copyright Notice in lua.h
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*/
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@ -210,12 +210,12 @@ typedef struct lua_TValue TValue;
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#define setsvalue(L,obj,x) \
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{ TValue *io = (obj); TString *x_ = (x); \
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val_(io).gc = obj2gco(x_); settt_(io, ctb(x_->tsv.tt)); \
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val_(io).gc = obj2gco(&x_->tsv); settt_(io, ctb(x_->tsv.tt)); \
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checkliveness(G(L),io); }
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#define setuvalue(L,obj,x) \
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{ TValue *io = (obj); Udata *x_ = (x); \
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val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TUSERDATA)); \
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val_(io).gc = obj2gco(&x_->uv); settt_(io, ctb(LUA_TUSERDATA)); \
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checkliveness(G(L),io); }
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#define setthvalue(L,obj,x) \
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@ -1,5 +1,5 @@
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/*
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** $Id: lparser.c,v 2.138 2013/12/30 20:47:58 roberto Exp roberto $
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** $Id: lparser.c,v 2.139 2014/06/19 18:27:20 roberto Exp roberto $
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** Lua Parser
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** See Copyright Notice in lua.h
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*/
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@ -164,7 +164,7 @@ static int registerlocalvar (LexState *ls, TString *varname) {
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LocVar, SHRT_MAX, "local variables");
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while (oldsize < f->sizelocvars) f->locvars[oldsize++].varname = NULL;
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f->locvars[fs->nlocvars].varname = varname;
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luaC_objbarrier(ls->L, f, varname);
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luaC_objbarrier(ls->L, f, ts2gco(varname));
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return fs->nlocvars++;
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}
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@ -232,7 +232,7 @@ static int newupvalue (FuncState *fs, TString *name, expdesc *v) {
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f->upvalues[fs->nups].instack = (v->k == VLOCAL);
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f->upvalues[fs->nups].idx = cast_byte(v->u.info);
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f->upvalues[fs->nups].name = name;
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luaC_objbarrier(fs->ls->L, f, name);
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luaC_objbarrier(fs->ls->L, f, ts2gco(name));
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return fs->nups++;
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}
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@ -1630,7 +1630,7 @@ LClosure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff,
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incr_top(L);
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funcstate.f = cl->p = luaF_newproto(L);
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funcstate.f->source = luaS_new(L, name); /* create and anchor TString */
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luaC_objbarrier(L, funcstate.f, funcstate.f->source);
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luaC_objbarrier(L, funcstate.f, ts2gco(funcstate.f->source));
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lexstate.buff = buff;
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lexstate.dyd = dyd;
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dyd->actvar.n = dyd->gt.n = dyd->label.n = 0;
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4
lstate.c
4
lstate.c
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@ -1,5 +1,5 @@
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/*
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** $Id: lstate.c,v 2.120 2014/02/18 13:39:37 roberto Exp roberto $
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** $Id: lstate.c,v 2.121 2014/02/18 13:46:26 roberto Exp roberto $
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** Global State
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** See Copyright Notice in lua.h
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*/
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@ -206,7 +206,7 @@ static void f_luaopen (lua_State *L, void *ud) {
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luaX_init(L);
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/* pre-create memory-error message */
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g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
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luaC_fix(L, obj2gco(g->memerrmsg)); /* it should never be collected */
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luaC_fix(L, ts2gco(g->memerrmsg)); /* it should never be collected */
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g->gcrunning = 1; /* allow gc */
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g->version = lua_version(NULL);
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luai_userstateopen(L);
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16
lstate.h
16
lstate.h
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@ -1,5 +1,5 @@
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/*
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** $Id: lstate.h,v 2.109 2014/07/17 17:09:50 roberto Exp roberto $
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** $Id: lstate.h,v 2.110 2014/07/17 17:27:49 roberto Exp roberto $
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** Global State
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** See Copyright Notice in lua.h
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*/
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@ -170,7 +170,7 @@ struct lua_State {
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/*
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** Union of all collectable objects
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** Union of all collectable objects (only for conversions)
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*/
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union GCUnion {
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GCObject gc; /* common header */
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@ -200,8 +200,16 @@ union GCUnion {
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#define gco2th(o) check_exp((o)->tt == LUA_TTHREAD, &((cast_u(o))->th))
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/* macro to convert any Lua object into a GCObject */
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#define obj2gco(v) (&(cast_u(v)->gc))
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/* macro to convert a Lua object into a GCObject */
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#define obj2gco(v) \
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check_exp(novariant((v)->tt) < LUA_TDEADKEY, (&(cast_u(v)->gc)))
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/*
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** macro to convert a TString into a GCObject.
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** (TString is a union, and therefore needs an access slightly different
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** from the other objects.)
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*/
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#define ts2gco(v) (obj2gco(&(v)->tsv))
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/* actual number of total bytes allocated */
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@ -1,5 +1,5 @@
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/*
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** $Id: lstring.c,v 2.39 2014/04/02 16:44:42 roberto Exp roberto $
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** $Id: lstring.c,v 2.40 2014/06/18 22:59:29 roberto Exp roberto $
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** String table (keeps all strings handled by Lua)
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** See Copyright Notice in lua.h
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*/
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@ -126,8 +126,8 @@ static TString *internshrstr (lua_State *L, const char *str, size_t l) {
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if (l == ts->tsv.len &&
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(memcmp(str, getstr(ts), l * sizeof(char)) == 0)) {
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/* found! */
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if (isdead(g, obj2gco(ts))) /* dead (but not collected yet)? */
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changewhite(obj2gco(ts)); /* resurrect it */
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if (isdead(g, ts2gco(ts))) /* dead (but not collected yet)? */
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changewhite(ts2gco(ts)); /* resurrect it */
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return ts;
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}
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}
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21
ltests.c
21
ltests.c
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@ -1,5 +1,5 @@
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/*
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** $Id: ltests.c,v 2.176 2014/07/17 13:53:37 roberto Exp roberto $
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** $Id: ltests.c,v 2.177 2014/07/17 17:27:49 roberto Exp roberto $
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** Internal Module for Debugging of the Lua Implementation
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** See Copyright Notice in lua.h
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*/
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@ -207,10 +207,11 @@ static int testobjref (global_State *g, GCObject *f, GCObject *t) {
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return r1;
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}
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#define checkobjref(g,f,t) checkobjref_(g,f,obj2gco(t))
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static void checkobjref_ (global_State *g, GCObject *f, GCObject *t) {
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lua_assert((t) == NULL || testobjref(g,f,obj2gco(t)));
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}
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#define checkobjref(g,f,t) \
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{ if (t) lua_longassert(testobjref(g,f,obj2gco(t))); }
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#define checkstrref(g,f,t) \
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{ if (t) lua_longassert(testobjref(g,f,ts2gco(t))); }
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static void checkvalref (global_State *g, GCObject *f, const TValue *t) {
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@ -244,17 +245,17 @@ static void checkproto (global_State *g, Proto *f) {
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int i;
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GCObject *fgc = obj2gco(f);
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checkobjref(g, fgc, f->cache);
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checkobjref(g, fgc, f->source);
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checkstrref(g, fgc, f->source);
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for (i=0; i<f->sizek; i++) {
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if (ttisstring(f->k+i))
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checkobjref(g, fgc, rawtsvalue(f->k+i));
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if (ttisstring(f->k + i))
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checkobjref(g, fgc, tsvalue(f->k + i));
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}
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for (i=0; i<f->sizeupvalues; i++)
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checkobjref(g, fgc, f->upvalues[i].name);
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checkstrref(g, fgc, f->upvalues[i].name);
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for (i=0; i<f->sizep; i++)
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checkobjref(g, fgc, f->p[i]);
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for (i=0; i<f->sizelocvars; i++)
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checkobjref(g, fgc, f->locvars[i].varname);
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checkstrref(g, fgc, f->locvars[i].varname);
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}
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4
ltm.c
4
ltm.c
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@ -1,5 +1,5 @@
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/*
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** $Id: ltm.c,v 2.26 2014/04/11 20:17:39 roberto Exp roberto $
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** $Id: ltm.c,v 2.27 2014/06/10 18:53:18 roberto Exp roberto $
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** Tag methods
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** See Copyright Notice in lua.h
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*/
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@ -45,7 +45,7 @@ void luaT_init (lua_State *L) {
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int i;
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for (i=0; i<TM_N; i++) {
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G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
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luaC_fix(L, obj2gco(G(L)->tmname[i])); /* never collect these names */
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luaC_fix(L, ts2gco(G(L)->tmname[i])); /* never collect these names */
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}
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}
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