Remove external 3rdparty library

Downloaded at build time.

Change-Id: If15e9bcb4cc7d09cec1837a0ad62e4a3c6beb4e1
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

1 files changed, 0 insertions, 1178 deletions

diff --git a/3rdparty/lua/src/lgc.c b/3rdparty/lua/src/lgc.c
deleted file mode 100644
index ba2c19e..0000000
--- a/3rdparty/lua/src/lgc.c
+++ /dev/null
@@ -1,1178 +0,0 @@
-/*
-** $Id: lgc.c,v 2.215 2016/12/22 13:08:50 roberto Exp $
-** Garbage Collector
-** See Copyright Notice in lua.h
-*/
-
-#define lgc_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
-
-#include <string.h>
-
-#include "lua.h"
-
-#include "ldebug.h"
-#include "ldo.h"
-#include "lfunc.h"
-#include "lgc.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "ltable.h"
-#include "ltm.h"
-
-
-/*
-** internal state for collector while inside the atomic phase. The
-** collector should never be in this state while running regular code.
-*/
-#define GCSinsideatomic		(GCSpause + 1)
-
-/*
-** cost of sweeping one element (the size of a small object divided
-** by some adjust for the sweep speed)
-*/
-#define GCSWEEPCOST	((sizeof(TString) + 4) / 4)
-
-/* maximum number of elements to sweep in each single step */
-#define GCSWEEPMAX	(cast_int((GCSTEPSIZE / GCSWEEPCOST) / 4))
-
-/* cost of calling one finalizer */
-#define GCFINALIZECOST	GCSWEEPCOST
-
-
-/*
-** macro to adjust 'stepmul': 'stepmul' is actually used like
-** 'stepmul / STEPMULADJ' (value chosen by tests)
-*/
-#define STEPMULADJ		200
-
-
-/*
-** macro to adjust 'pause': 'pause' is actually used like
-** 'pause / PAUSEADJ' (value chosen by tests)
-*/
-#define PAUSEADJ		100
-
-
-/*
-** 'makewhite' erases all color bits then sets only the current white
-** bit
-*/
-#define maskcolors	(~(bitmask(BLACKBIT) | WHITEBITS))
-#define makewhite(g,x)	\
- (x->marked = cast_byte((x->marked & maskcolors) | luaC_white(g)))
-
-#define white2gray(x)	resetbits(x->marked, WHITEBITS)
-#define black2gray(x)	resetbit(x->marked, BLACKBIT)
-
-
-#define valiswhite(x)   (iscollectable(x) && iswhite(gcvalue(x)))
-
-#define checkdeadkey(n)	lua_assert(!ttisdeadkey(gkey(n)) || ttisnil(gval(n)))
-
-
-#define checkconsistency(obj)  \
-  lua_longassert(!iscollectable(obj) || righttt(obj))
-
-
-#define markvalue(g,o) { checkconsistency(o); \
-  if (valiswhite(o)) reallymarkobject(g,gcvalue(o)); }
-
-#define markobject(g,t)	{ if (iswhite(t)) reallymarkobject(g, obj2gco(t)); }
-
-/*
-** mark an object that can be NULL (either because it is really optional,
-** or it was stripped as debug info, or inside an uncompleted structure)
-*/
-#define markobjectN(g,t)	{ if (t) markobject(g,t); }
-
-static void reallymarkobject (global_State *g, GCObject *o);
-
-
-/*
-** {======================================================
-** Generic functions
-** =======================================================
-*/
-
-
-/*
-** one after last element in a hash array
-*/
-#define gnodelast(h)	gnode(h, cast(size_t, sizenode(h)))
-
-
-/*
-** link collectable object 'o' into list pointed by 'p'
-*/
-#define linkgclist(o,p)	((o)->gclist = (p), (p) = obj2gco(o))
-
-
-/*
-** If key is not marked, mark its entry as dead. This allows key to be
-** collected, but keeps its entry in the table.  A dead node is needed
-** when Lua looks up for a key (it may be part of a chain) and when
-** traversing a weak table (key might be removed from the table during
-** traversal). Other places never manipulate dead keys, because its
-** associated nil value is enough to signal that the entry is logically
-** empty.
-*/
-static void removeentry (Node *n) {
-  lua_assert(ttisnil(gval(n)));
-  if (valiswhite(gkey(n)))
-    setdeadvalue(wgkey(n));  /* unused and unmarked key; remove it */
-}
-
-
-/*
-** tells whether a key or value can be cleared from a weak
-** table. Non-collectable objects are never removed from weak
-** tables. Strings behave as 'values', so are never removed too. for
-** other objects: if really collected, cannot keep them; for objects
-** being finalized, keep them in keys, but not in values
-*/
-static int iscleared (global_State *g, const TValue *o) {
-  if (!iscollectable(o)) return 0;
-  else if (ttisstring(o)) {
-    markobject(g, tsvalue(o));  /* strings are 'values', so are never weak */
-    return 0;
-  }
-  else return iswhite(gcvalue(o));
-}
-
-
-/*
-** barrier that moves collector forward, that is, mark the white object
-** being pointed by a black object. (If in sweep phase, clear the black
-** object to white [sweep it] to avoid other barrier calls for this
-** same object.)
-*/
-void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v) {
-  global_State *g = G(L);
-  lua_assert(isblack(o) && iswhite(v) && !isdead(g, v) && !isdead(g, o));
-  if (keepinvariant(g))  /* must keep invariant? */
-    reallymarkobject(g, v);  /* restore invariant */
-  else {  /* sweep phase */
-    lua_assert(issweepphase(g));
-    makewhite(g, o);  /* mark main obj. as white to avoid other barriers */
-  }
-}
-
-
-/*
-** barrier that moves collector backward, that is, mark the black object
-** pointing to a white object as gray again.
-*/
-void luaC_barrierback_ (lua_State *L, Table *t) {
-  global_State *g = G(L);
-  lua_assert(isblack(t) && !isdead(g, t));
-  black2gray(t);  /* make table gray (again) */
-  linkgclist(t, g->grayagain);
-}
-
-
-/*
-** barrier for assignments to closed upvalues. Because upvalues are
-** shared among closures, it is impossible to know the color of all
-** closures pointing to it. So, we assume that the object being assigned
-** must be marked.
-*/
-void luaC_upvalbarrier_ (lua_State *L, UpVal *uv) {
-  global_State *g = G(L);
-  GCObject *o = gcvalue(uv->v);
-  lua_assert(!upisopen(uv));  /* ensured by macro luaC_upvalbarrier */
-  if (keepinvariant(g))
-    markobject(g, o);
-}
-
-
-void luaC_fix (lua_State *L, GCObject *o) {
-  global_State *g = G(L);
-  lua_assert(g->allgc == o);  /* object must be 1st in 'allgc' list! */
-  white2gray(o);  /* they will be gray forever */
-  g->allgc = o->next;  /* remove object from 'allgc' list */
-  o->next = g->fixedgc;  /* link it to 'fixedgc' list */
-  g->fixedgc = o;
-}
-
-
-/*
-** create a new collectable object (with given type and size) and link
-** it to 'allgc' list.
-*/
-GCObject *luaC_newobj (lua_State *L, int tt, size_t sz) {
-  global_State *g = G(L);
-  GCObject *o = cast(GCObject *, luaM_newobject(L, novariant(tt), sz));
-  o->marked = luaC_white(g);
-  o->tt = tt;
-  o->next = g->allgc;
-  g->allgc = o;
-  return o;
-}
-
-/* }====================================================== */
-
-
-
-/*
-** {======================================================
-** Mark functions
-** =======================================================
-*/
-
-
-/*
-** mark an object. Userdata, strings, and closed upvalues are visited
-** and turned black here. Other objects are marked gray and added
-** to appropriate list to be visited (and turned black) later. (Open
-** upvalues are already linked in 'headuv' list.)
-*/
-static void reallymarkobject (global_State *g, GCObject *o) {
- reentry:
-  white2gray(o);
-  switch (o->tt) {
-    case LUA_TSHRSTR: {
-      gray2black(o);
-      g->GCmemtrav += sizelstring(gco2ts(o)->shrlen);
-      break;
-    }
-    case LUA_TLNGSTR: {
-      gray2black(o);
-      g->GCmemtrav += sizelstring(gco2ts(o)->u.lnglen);
-      break;
-    }
-    case LUA_TUSERDATA: {
-      TValue uvalue;
-      markobjectN(g, gco2u(o)->metatable);  /* mark its metatable */
-      gray2black(o);
-      g->GCmemtrav += sizeudata(gco2u(o));
-      getuservalue(g->mainthread, gco2u(o), &uvalue);
-      if (valiswhite(&uvalue)) {  /* markvalue(g, &uvalue); */
-        o = gcvalue(&uvalue);
-        goto reentry;
-      }
-      break;
-    }
-    case LUA_TLCL: {
-      linkgclist(gco2lcl(o), g->gray);
-      break;
-    }
-    case LUA_TCCL: {
-      linkgclist(gco2ccl(o), g->gray);
-      break;
-    }
-    case LUA_TTABLE: {
-      linkgclist(gco2t(o), g->gray);
-      break;
-    }
-    case LUA_TTHREAD: {
-      linkgclist(gco2th(o), g->gray);
-      break;
-    }
-    case LUA_TPROTO: {
-      linkgclist(gco2p(o), g->gray);
-      break;
-    }
-    default: lua_assert(0); break;
-  }
-}
-
-
-/*
-** mark metamethods for basic types
-*/
-static void markmt (global_State *g) {
-  int i;
-  for (i=0; i < LUA_NUMTAGS; i++)
-    markobjectN(g, g->mt[i]);
-}
-
-
-/*
-** mark all objects in list of being-finalized
-*/
-static void markbeingfnz (global_State *g) {
-  GCObject *o;
-  for (o = g->tobefnz; o != NULL; o = o->next)
-    markobject(g, o);
-}
-
-
-/*
-** Mark all values stored in marked open upvalues from non-marked threads.
-** (Values from marked threads were already marked when traversing the
-** thread.) Remove from the list threads that no longer have upvalues and
-** not-marked threads.
-*/
-static void remarkupvals (global_State *g) {
-  lua_State *thread;
-  lua_State **p = &g->twups;
-  while ((thread = *p) != NULL) {
-    lua_assert(!isblack(thread));  /* threads are never black */
-    if (isgray(thread) && thread->openupval != NULL)
-      p = &thread->twups;  /* keep marked thread with upvalues in the list */
-    else {  /* thread is not marked or without upvalues */
-      UpVal *uv;
-      *p = thread->twups;  /* remove thread from the list */
-      thread->twups = thread;  /* mark that it is out of list */
-      for (uv = thread->openupval; uv != NULL; uv = uv->u.open.next) {
-        if (uv->u.open.touched) {
-          markvalue(g, uv->v);  /* remark upvalue's value */
-          uv->u.open.touched = 0;
-        }
-      }
-    }
-  }
-}
-
-
-/*
-** mark root set and reset all gray lists, to start a new collection
-*/
-static void restartcollection (global_State *g) {
-  g->gray = g->grayagain = NULL;
-  g->weak = g->allweak = g->ephemeron = NULL;
-  markobject(g, g->mainthread);
-  markvalue(g, &g->l_registry);
-  markmt(g);
-  markbeingfnz(g);  /* mark any finalizing object left from previous cycle */
-}
-
-/* }====================================================== */
-
-
-/*
-** {======================================================
-** Traverse functions
-** =======================================================
-*/
-
-/*
-** Traverse a table with weak values and link it to proper list. During
-** propagate phase, keep it in 'grayagain' list, to be revisited in the
-** atomic phase. In the atomic phase, if table has any white value,
-** put it in 'weak' list, to be cleared.
-*/
-static void traverseweakvalue (global_State *g, Table *h) {
-  Node *n, *limit = gnodelast(h);
-  /* if there is array part, assume it may have white values (it is not
-     worth traversing it now just to check) */
-  int hasclears = (h->sizearray > 0);
-  for (n = gnode(h, 0); n < limit; n++) {  /* traverse hash part */
-    checkdeadkey(n);
-    if (ttisnil(gval(n)))  /* entry is empty? */
-      removeentry(n);  /* remove it */
-    else {
-      lua_assert(!ttisnil(gkey(n)));
-      markvalue(g, gkey(n));  /* mark key */
-      if (!hasclears && iscleared(g, gval(n)))  /* is there a white value? */
-        hasclears = 1;  /* table will have to be cleared */
-    }
-  }
-  if (g->gcstate == GCSpropagate)
-    linkgclist(h, g->grayagain);  /* must retraverse it in atomic phase */
-  else if (hasclears)
-    linkgclist(h, g->weak);  /* has to be cleared later */
-}
-
-
-/*
-** Traverse an ephemeron table and link it to proper list. Returns true
-** iff any object was marked during this traversal (which implies that
-** convergence has to continue). During propagation phase, keep table
-** in 'grayagain' list, to be visited again in the atomic phase. In
-** the atomic phase, if table has any white->white entry, it has to
-** be revisited during ephemeron convergence (as that key may turn
-** black). Otherwise, if it has any white key, table has to be cleared
-** (in the atomic phase).
-*/
-static int traverseephemeron (global_State *g, Table *h) {
-  int marked = 0;  /* true if an object is marked in this traversal */
-  int hasclears = 0;  /* true if table has white keys */
-  int hasww = 0;  /* true if table has entry "white-key -> white-value" */
-  Node *n, *limit = gnodelast(h);
-  unsigned int i;
-  /* traverse array part */
-  for (i = 0; i < h->sizearray; i++) {
-    if (valiswhite(&h->array[i])) {
-      marked = 1;
-      reallymarkobject(g, gcvalue(&h->array[i]));
-    }
-  }
-  /* traverse hash part */
-  for (n = gnode(h, 0); n < limit; n++) {
-    checkdeadkey(n);
-    if (ttisnil(gval(n)))  /* entry is empty? */
-      removeentry(n);  /* remove it */
-    else if (iscleared(g, gkey(n))) {  /* key is not marked (yet)? */
-      hasclears = 1;  /* table must be cleared */
-      if (valiswhite(gval(n)))  /* value not marked yet? */
-        hasww = 1;  /* white-white entry */
-    }
-    else if (valiswhite(gval(n))) {  /* value not marked yet? */
-      marked = 1;
-      reallymarkobject(g, gcvalue(gval(n)));  /* mark it now */
-    }
-  }
-  /* link table into proper list */
-  if (g->gcstate == GCSpropagate)
-    linkgclist(h, g->grayagain);  /* must retraverse it in atomic phase */
-  else if (hasww)  /* table has white->white entries? */
-    linkgclist(h, g->ephemeron);  /* have to propagate again */
-  else if (hasclears)  /* table has white keys? */
-    linkgclist(h, g->allweak);  /* may have to clean white keys */
-  return marked;
-}
-
-
-static void traversestrongtable (global_State *g, Table *h) {
-  Node *n, *limit = gnodelast(h);
-  unsigned int i;
-  for (i = 0; i < h->sizearray; i++)  /* traverse array part */
-    markvalue(g, &h->array[i]);
-  for (n = gnode(h, 0); n < limit; n++) {  /* traverse hash part */
-    checkdeadkey(n);
-    if (ttisnil(gval(n)))  /* entry is empty? */
-      removeentry(n);  /* remove it */
-    else {
-      lua_assert(!ttisnil(gkey(n)));
-      markvalue(g, gkey(n));  /* mark key */
-      markvalue(g, gval(n));  /* mark value */
-    }
-  }
-}
-
-
-static lu_mem traversetable (global_State *g, Table *h) {
-  const char *weakkey, *weakvalue;
-  const TValue *mode = gfasttm(g, h->metatable, TM_MODE);
-  markobjectN(g, h->metatable);
-  if (mode && ttisstring(mode) &&  /* is there a weak mode? */
-      ((weakkey = strchr(svalue(mode), 'k')),
-       (weakvalue = strchr(svalue(mode), 'v')),
-       (weakkey || weakvalue))) {  /* is really weak? */
-    black2gray(h);  /* keep table gray */
-    if (!weakkey)  /* strong keys? */
-      traverseweakvalue(g, h);
-    else if (!weakvalue)  /* strong values? */
-      traverseephemeron(g, h);
-    else  /* all weak */
-      linkgclist(h, g->allweak);  /* nothing to traverse now */
-  }
-  else  /* not weak */
-    traversestrongtable(g, h);
-  return sizeof(Table) + sizeof(TValue) * h->sizearray +
-                         sizeof(Node) * cast(size_t, allocsizenode(h));
-}
-
-
-/*
-** Traverse a prototype. (While a prototype is being build, its
-** arrays can be larger than needed; the extra slots are filled with
-** NULL, so the use of 'markobjectN')
-*/
-static int traverseproto (global_State *g, Proto *f) {
-  int i;
-  if (f->cache && iswhite(f->cache))
-    f->cache = NULL;  /* allow cache to be collected */
-  markobjectN(g, f->source);
-  for (i = 0; i < f->sizek; i++)  /* mark literals */
-    markvalue(g, &f->k[i]);
-  for (i = 0; i < f->sizeupvalues; i++)  /* mark upvalue names */
-    markobjectN(g, f->upvalues[i].name);
-  for (i = 0; i < f->sizep; i++)  /* mark nested protos */
-    markobjectN(g, f->p[i]);
-  for (i = 0; i < f->sizelocvars; i++)  /* mark local-variable names */
-    markobjectN(g, f->locvars[i].varname);
-  return sizeof(Proto) + sizeof(Instruction) * f->sizecode +
-                         sizeof(Proto *) * f->sizep +
-                         sizeof(TValue) * f->sizek +
-                         sizeof(int) * f->sizelineinfo +
-                         sizeof(LocVar) * f->sizelocvars +
-                         sizeof(Upvaldesc) * f->sizeupvalues;
-}
-
-
-static lu_mem traverseCclosure (global_State *g, CClosure *cl) {
-  int i;
-  for (i = 0; i < cl->nupvalues; i++)  /* mark its upvalues */
-    markvalue(g, &cl->upvalue[i]);
-  return sizeCclosure(cl->nupvalues);
-}
-
-/*
-** open upvalues point to values in a thread, so those values should
-** be marked when the thread is traversed except in the atomic phase
-** (because then the value cannot be changed by the thread and the
-** thread may not be traversed again)
-*/
-static lu_mem traverseLclosure (global_State *g, LClosure *cl) {
-  int i;
-  markobjectN(g, cl->p);  /* mark its prototype */
-  for (i = 0; i < cl->nupvalues; i++) {  /* mark its upvalues */
-    UpVal *uv = cl->upvals[i];
-    if (uv != NULL) {
-      if (upisopen(uv) && g->gcstate != GCSinsideatomic)
-        uv->u.open.touched = 1;  /* can be marked in 'remarkupvals' */
-      else
-        markvalue(g, uv->v);
-    }
-  }
-  return sizeLclosure(cl->nupvalues);
-}
-
-
-static lu_mem traversethread (global_State *g, lua_State *th) {
-  StkId o = th->stack;
-  if (o == NULL)
-    return 1;  /* stack not completely built yet */
-  lua_assert(g->gcstate == GCSinsideatomic ||
-             th->openupval == NULL || isintwups(th));
-  for (; o < th->top; o++)  /* mark live elements in the stack */
-    markvalue(g, o);
-  if (g->gcstate == GCSinsideatomic) {  /* final traversal? */
-    StkId lim = th->stack + th->stacksize;  /* real end of stack */
-    for (; o < lim; o++)  /* clear not-marked stack slice */
-      setnilvalue(o);
-    /* 'remarkupvals' may have removed thread from 'twups' list */
-    if (!isintwups(th) && th->openupval != NULL) {
-      th->twups = g->twups;  /* link it back to the list */
-      g->twups = th;
-    }
-  }
-  else if (g->gckind != KGC_EMERGENCY)
-    luaD_shrinkstack(th); /* do not change stack in emergency cycle */
-  return (sizeof(lua_State) + sizeof(TValue) * th->stacksize +
-          sizeof(CallInfo) * th->nci);
-}
-
-
-/*
-** traverse one gray object, turning it to black (except for threads,
-** which are always gray).
-*/
-static void propagatemark (global_State *g) {
-  lu_mem size;
-  GCObject *o = g->gray;
-  lua_assert(isgray(o));
-  gray2black(o);
-  switch (o->tt) {
-    case LUA_TTABLE: {
-      Table *h = gco2t(o);
-      g->gray = h->gclist;  /* remove from 'gray' list */
-      size = traversetable(g, h);
-      break;
-    }
-    case LUA_TLCL: {
-      LClosure *cl = gco2lcl(o);
-      g->gray = cl->gclist;  /* remove from 'gray' list */
-      size = traverseLclosure(g, cl);
-      break;
-    }
-    case LUA_TCCL: {
-      CClosure *cl = gco2ccl(o);
-      g->gray = cl->gclist;  /* remove from 'gray' list */
-      size = traverseCclosure(g, cl);
-      break;
-    }
-    case LUA_TTHREAD: {
-      lua_State *th = gco2th(o);
-      g->gray = th->gclist;  /* remove from 'gray' list */
-      linkgclist(th, g->grayagain);  /* insert into 'grayagain' list */
-      black2gray(o);
-      size = traversethread(g, th);
-      break;
-    }
-    case LUA_TPROTO: {
-      Proto *p = gco2p(o);
-      g->gray = p->gclist;  /* remove from 'gray' list */
-      size = traverseproto(g, p);
-      break;
-    }
-    default: lua_assert(0); return;
-  }
-  g->GCmemtrav += size;
-}
-
-
-static void propagateall (global_State *g) {
-  while (g->gray) propagatemark(g);
-}
-
-
-static void convergeephemerons (global_State *g) {
-  int changed;
-  do {
-    GCObject *w;
-    GCObject *next = g->ephemeron;  /* get ephemeron list */
-    g->ephemeron = NULL;  /* tables may return to this list when traversed */
-    changed = 0;
-    while ((w = next) != NULL) {
-      next = gco2t(w)->gclist;
-      if (traverseephemeron(g, gco2t(w))) {  /* traverse marked some value? */
-        propagateall(g);  /* propagate changes */
-        changed = 1;  /* will have to revisit all ephemeron tables */
-      }
-    }
-  } while (changed);
-}
-
-/* }====================================================== */
-
-
-/*
-** {======================================================
-** Sweep Functions
-** =======================================================
-*/
-
-
-/*
-** clear entries with unmarked keys from all weaktables in list 'l' up
-** to element 'f'
-*/
-static void clearkeys (global_State *g, GCObject *l, GCObject *f) {
-  for (; l != f; l = gco2t(l)->gclist) {
-    Table *h = gco2t(l);
-    Node *n, *limit = gnodelast(h);
-    for (n = gnode(h, 0); n < limit; n++) {
-      if (!ttisnil(gval(n)) && (iscleared(g, gkey(n)))) {
-        setnilvalue(gval(n));  /* remove value ... */
-        removeentry(n);  /* and remove entry from table */
-      }
-    }
-  }
-}
-
-
-/*
-** clear entries with unmarked values from all weaktables in list 'l' up
-** to element 'f'
-*/
-static void clearvalues (global_State *g, GCObject *l, GCObject *f) {
-  for (; l != f; l = gco2t(l)->gclist) {
-    Table *h = gco2t(l);
-    Node *n, *limit = gnodelast(h);
-    unsigned int i;
-    for (i = 0; i < h->sizearray; i++) {
-      TValue *o = &h->array[i];
-      if (iscleared(g, o))  /* value was collected? */
-        setnilvalue(o);  /* remove value */
-    }
-    for (n = gnode(h, 0); n < limit; n++) {
-      if (!ttisnil(gval(n)) && iscleared(g, gval(n))) {
-        setnilvalue(gval(n));  /* remove value ... */
-        removeentry(n);  /* and remove entry from table */
-      }
-    }
-  }
-}
-
-
-void luaC_upvdeccount (lua_State *L, UpVal *uv) {
-  lua_assert(uv->refcount > 0);
-  uv->refcount--;
-  if (uv->refcount == 0 && !upisopen(uv))
-    luaM_free(L, uv);
-}
-
-
-static void freeLclosure (lua_State *L, LClosure *cl) {
-  int i;
-  for (i = 0; i < cl->nupvalues; i++) {
-    UpVal *uv = cl->upvals[i];
-    if (uv)
-      luaC_upvdeccount(L, uv);
-  }
-  luaM_freemem(L, cl, sizeLclosure(cl->nupvalues));
-}
-
-
-static void freeobj (lua_State *L, GCObject *o) {
-  switch (o->tt) {
-    case LUA_TPROTO: luaF_freeproto(L, gco2p(o)); break;
-    case LUA_TLCL: {
-      freeLclosure(L, gco2lcl(o));
-      break;
-    }
-    case LUA_TCCL: {
-      luaM_freemem(L, o, sizeCclosure(gco2ccl(o)->nupvalues));
-      break;
-    }
-    case LUA_TTABLE: luaH_free(L, gco2t(o)); break;
-    case LUA_TTHREAD: luaE_freethread(L, gco2th(o)); break;
-    case LUA_TUSERDATA: luaM_freemem(L, o, sizeudata(gco2u(o))); break;
-    case LUA_TSHRSTR:
-      luaS_remove(L, gco2ts(o));  /* remove it from hash table */
-      luaM_freemem(L, o, sizelstring(gco2ts(o)->shrlen));
-      break;
-    case LUA_TLNGSTR: {
-      luaM_freemem(L, o, sizelstring(gco2ts(o)->u.lnglen));
-      break;
-    }
-    default: lua_assert(0);
-  }
-}
-
-
-#define sweepwholelist(L,p)	sweeplist(L,p,MAX_LUMEM)
-static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count);
-
-
-/*
-** sweep at most 'count' elements from a list of GCObjects erasing dead
-** objects, where a dead object is one marked with the old (non current)
-** white; change all non-dead objects back to white, preparing for next
-** collection cycle. Return where to continue the traversal or NULL if
-** list is finished.
-*/
-static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count) {
-  global_State *g = G(L);
-  int ow = otherwhite(g);
-  int white = luaC_white(g);  /* current white */
-  while (*p != NULL && count-- > 0) {
-    GCObject *curr = *p;
-    int marked = curr->marked;
-    if (isdeadm(ow, marked)) {  /* is 'curr' dead? */
-      *p = curr->next;  /* remove 'curr' from list */
-      freeobj(L, curr);  /* erase 'curr' */
-    }
-    else {  /* change mark to 'white' */
-      curr->marked = cast_byte((marked & maskcolors) | white);
-      p = &curr->next;  /* go to next element */
-    }
-  }
-  return (*p == NULL) ? NULL : p;
-}
-
-
-/*
-** sweep a list until a live object (or end of list)
-*/
-static GCObject **sweeptolive (lua_State *L, GCObject **p) {
-  GCObject **old = p;
-  do {
-    p = sweeplist(L, p, 1);
-  } while (p == old);
-  return p;
-}
-
-/* }====================================================== */
-
-
-/*
-** {======================================================
-** Finalization
-** =======================================================
-*/
-
-/*
-** If possible, shrink string table
-*/
-static void checkSizes (lua_State *L, global_State *g) {
-  if (g->gckind != KGC_EMERGENCY) {
-    l_mem olddebt = g->GCdebt;
-    if (g->strt.nuse < g->strt.size / 4)  /* string table too big? */
-      luaS_resize(L, g->strt.size / 2);  /* shrink it a little */
-    g->GCestimate += g->GCdebt - olddebt;  /* update estimate */
-  }
-}
-
-
-static GCObject *udata2finalize (global_State *g) {
-  GCObject *o = g->tobefnz;  /* get first element */
-  lua_assert(tofinalize(o));
-  g->tobefnz = o->next;  /* remove it from 'tobefnz' list */
-  o->next = g->allgc;  /* return it to 'allgc' list */
-  g->allgc = o;
-  resetbit(o->marked, FINALIZEDBIT);  /* object is "normal" again */
-  if (issweepphase(g))
-    makewhite(g, o);  /* "sweep" object */
-  return o;
-}
-
-
-static void dothecall (lua_State *L, void *ud) {
-  UNUSED(ud);
-  luaD_callnoyield(L, L->top - 2, 0);
-}
-
-
-static void GCTM (lua_State *L, int propagateerrors) {
-  global_State *g = G(L);
-  const TValue *tm;
-  TValue v;
-  setgcovalue(L, &v, udata2finalize(g));
-  tm = luaT_gettmbyobj(L, &v, TM_GC);
-  if (tm != NULL && ttisfunction(tm)) {  /* is there a finalizer? */
-    int status;
-    lu_byte oldah = L->allowhook;
-    int running  = g->gcrunning;
-    L->allowhook = 0;  /* stop debug hooks during GC metamethod */
-    g->gcrunning = 0;  /* avoid GC steps */
-    setobj2s(L, L->top, tm);  /* push finalizer... */
-    setobj2s(L, L->top + 1, &v);  /* ... and its argument */
-    L->top += 2;  /* and (next line) call the finalizer */
-    L->ci->callstatus |= CIST_FIN;  /* will run a finalizer */
-    status = luaD_pcall(L, dothecall, NULL, savestack(L, L->top - 2), 0);
-    L->ci->callstatus &= ~CIST_FIN;  /* not running a finalizer anymore */
-    L->allowhook = oldah;  /* restore hooks */
-    g->gcrunning = running;  /* restore state */
-    if (status != LUA_OK && propagateerrors) {  /* error while running __gc? */
-      if (status == LUA_ERRRUN) {  /* is there an error object? */
-        const char *msg = (ttisstring(L->top - 1))
-                            ? svalue(L->top - 1)
-                            : "no message";
-        luaO_pushfstring(L, "error in __gc metamethod (%s)", msg);
-        status = LUA_ERRGCMM;  /* error in __gc metamethod */
-      }
-      luaD_throw(L, status);  /* re-throw error */
-    }
-  }
-}
-
-
-/*
-** call a few (up to 'g->gcfinnum') finalizers
-*/
-static int runafewfinalizers (lua_State *L) {
-  global_State *g = G(L);
-  unsigned int i;
-  lua_assert(!g->tobefnz || g->gcfinnum > 0);
-  for (i = 0; g->tobefnz && i < g->gcfinnum; i++)
-    GCTM(L, 1);  /* call one finalizer */
-  g->gcfinnum = (!g->tobefnz) ? 0  /* nothing more to finalize? */
-                    : g->gcfinnum * 2;  /* else call a few more next time */
-  return i;
-}
-
-
-/*
-** call all pending finalizers
-*/
-static void callallpendingfinalizers (lua_State *L) {
-  global_State *g = G(L);
-  while (g->tobefnz)
-    GCTM(L, 0);
-}
-
-
-/*
-** find last 'next' field in list 'p' list (to add elements in its end)
-*/
-static GCObject **findlast (GCObject **p) {
-  while (*p != NULL)
-    p = &(*p)->next;
-  return p;
-}
-
-
-/*
-** move all unreachable objects (or 'all' objects) that need
-** finalization from list 'finobj' to list 'tobefnz' (to be finalized)
-*/
-static void separatetobefnz (global_State *g, int all) {
-  GCObject *curr;
-  GCObject **p = &g->finobj;
-  GCObject **lastnext = findlast(&g->tobefnz);
-  while ((curr = *p) != NULL) {  /* traverse all finalizable objects */
-    lua_assert(tofinalize(curr));
-    if (!(iswhite(curr) || all))  /* not being collected? */
-      p = &curr->next;  /* don't bother with it */
-    else {
-      *p = curr->next;  /* remove 'curr' from 'finobj' list */
-      curr->next = *lastnext;  /* link at the end of 'tobefnz' list */
-      *lastnext = curr;
-      lastnext = &curr->next;
-    }
-  }
-}
-
-
-/*
-** if object 'o' has a finalizer, remove it from 'allgc' list (must
-** search the list to find it) and link it in 'finobj' list.
-*/
-void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt) {
-  global_State *g = G(L);
-  if (tofinalize(o) ||                 /* obj. is already marked... */
-      gfasttm(g, mt, TM_GC) == NULL)   /* or has no finalizer? */
-    return;  /* nothing to be done */
-  else {  /* move 'o' to 'finobj' list */
-    GCObject **p;
-    if (issweepphase(g)) {
-      makewhite(g, o);  /* "sweep" object 'o' */
-      if (g->sweepgc == &o->next)  /* should not remove 'sweepgc' object */
-        g->sweepgc = sweeptolive(L, g->sweepgc);  /* change 'sweepgc' */
-    }
-    /* search for pointer pointing to 'o' */
-    for (p = &g->allgc; *p != o; p = &(*p)->next) { /* empty */ }
-    *p = o->next;  /* remove 'o' from 'allgc' list */
-    o->next = g->finobj;  /* link it in 'finobj' list */
-    g->finobj = o;
-    l_setbit(o->marked, FINALIZEDBIT);  /* mark it as such */
-  }
-}
-
-/* }====================================================== */
-
-
-
-/*
-** {======================================================
-** GC control
-** =======================================================
-*/
-
-
-/*
-** Set a reasonable "time" to wait before starting a new GC cycle; cycle
-** will start when memory use hits threshold. (Division by 'estimate'
-** should be OK: it cannot be zero (because Lua cannot even start with
-** less than PAUSEADJ bytes).
-*/
-static void setpause (global_State *g) {
-  l_mem threshold, debt;
-  l_mem estimate = g->GCestimate / PAUSEADJ;  /* adjust 'estimate' */
-  lua_assert(estimate > 0);
-  threshold = (g->gcpause < MAX_LMEM / estimate)  /* overflow? */
-            ? estimate * g->gcpause  /* no overflow */
-            : MAX_LMEM;  /* overflow; truncate to maximum */
-  debt = gettotalbytes(g) - threshold;
-  luaE_setdebt(g, debt);
-}
-
-
-/*
-** Enter first sweep phase.
-** The call to 'sweeplist' tries to make pointer point to an object
-** inside the list (instead of to the header), so that the real sweep do
-** not need to skip objects created between "now" and the start of the
-** real sweep.
-*/
-static void entersweep (lua_State *L) {
-  global_State *g = G(L);
-  g->gcstate = GCSswpallgc;
-  lua_assert(g->sweepgc == NULL);
-  g->sweepgc = sweeplist(L, &g->allgc, 1);
-}
-
-
-void luaC_freeallobjects (lua_State *L) {
-  global_State *g = G(L);
-  separatetobefnz(g, 1);  /* separate all objects with finalizers */
-  lua_assert(g->finobj == NULL);
-  callallpendingfinalizers(L);
-  lua_assert(g->tobefnz == NULL);
-  g->currentwhite = WHITEBITS; /* this "white" makes all objects look dead */
-  g->gckind = KGC_NORMAL;
-  sweepwholelist(L, &g->finobj);
-  sweepwholelist(L, &g->allgc);
-  sweepwholelist(L, &g->fixedgc);  /* collect fixed objects */
-  lua_assert(g->strt.nuse == 0);
-}
-
-
-static l_mem atomic (lua_State *L) {
-  global_State *g = G(L);
-  l_mem work;
-  GCObject *origweak, *origall;
-  GCObject *grayagain = g->grayagain;  /* save original list */
-  lua_assert(g->ephemeron == NULL && g->weak == NULL);
-  lua_assert(!iswhite(g->mainthread));
-  g->gcstate = GCSinsideatomic;
-  g->GCmemtrav = 0;  /* start counting work */
-  markobject(g, L);  /* mark running thread */
-  /* registry and global metatables may be changed by API */
-  markvalue(g, &g->l_registry);
-  markmt(g);  /* mark global metatables */
-  /* remark occasional upvalues of (maybe) dead threads */
-  remarkupvals(g);
-  propagateall(g);  /* propagate changes */
-  work = g->GCmemtrav;  /* stop counting (do not recount 'grayagain') */
-  g->gray = grayagain;
-  propagateall(g);  /* traverse 'grayagain' list */
-  g->GCmemtrav = 0;  /* restart counting */
-  convergeephemerons(g);
-  /* at this point, all strongly accessible objects are marked. */
-  /* Clear values from weak tables, before checking finalizers */
-  clearvalues(g, g->weak, NULL);
-  clearvalues(g, g->allweak, NULL);
-  origweak = g->weak; origall = g->allweak;
-  work += g->GCmemtrav;  /* stop counting (objects being finalized) */
-  separatetobefnz(g, 0);  /* separate objects to be finalized */
-  g->gcfinnum = 1;  /* there may be objects to be finalized */
-  markbeingfnz(g);  /* mark objects that will be finalized */
-  propagateall(g);  /* remark, to propagate 'resurrection' */
-  g->GCmemtrav = 0;  /* restart counting */
-  convergeephemerons(g);
-  /* at this point, all resurrected objects are marked. */
-  /* remove dead objects from weak tables */
-  clearkeys(g, g->ephemeron, NULL);  /* clear keys from all ephemeron tables */
-  clearkeys(g, g->allweak, NULL);  /* clear keys from all 'allweak' tables */
-  /* clear values from resurrected weak tables */
-  clearvalues(g, g->weak, origweak);
-  clearvalues(g, g->allweak, origall);
-  luaS_clearcache(g);
-  g->currentwhite = cast_byte(otherwhite(g));  /* flip current white */
-  work += g->GCmemtrav;  /* complete counting */
-  return work;  /* estimate of memory marked by 'atomic' */
-}
-
-
-static lu_mem sweepstep (lua_State *L, global_State *g,
-                         int nextstate, GCObject **nextlist) {
-  if (g->sweepgc) {
-    l_mem olddebt = g->GCdebt;
-    g->sweepgc = sweeplist(L, g->sweepgc, GCSWEEPMAX);
-    g->GCestimate += g->GCdebt - olddebt;  /* update estimate */
-    if (g->sweepgc)  /* is there still something to sweep? */
-      return (GCSWEEPMAX * GCSWEEPCOST);
-  }
-  /* else enter next state */
-  g->gcstate = nextstate;
-  g->sweepgc = nextlist;
-  return 0;
-}
-
-
-static lu_mem singlestep (lua_State *L) {
-  global_State *g = G(L);
-  switch (g->gcstate) {
-    case GCSpause: {
-      g->GCmemtrav = g->strt.size * sizeof(GCObject*);
-      restartcollection(g);
-      g->gcstate = GCSpropagate;
-      return g->GCmemtrav;
-    }
-    case GCSpropagate: {
-      g->GCmemtrav = 0;
-      lua_assert(g->gray);
-      propagatemark(g);
-       if (g->gray == NULL)  /* no more gray objects? */
-        g->gcstate = GCSatomic;  /* finish propagate phase */
-      return g->GCmemtrav;  /* memory traversed in this step */
-    }
-    case GCSatomic: {
-      lu_mem work;
-      propagateall(g);  /* make sure gray list is empty */
-      work = atomic(L);  /* work is what was traversed by 'atomic' */
-      entersweep(L);
-      g->GCestimate = gettotalbytes(g);  /* first estimate */;
-      return work;
-    }
-    case GCSswpallgc: {  /* sweep "regular" objects */
-      return sweepstep(L, g, GCSswpfinobj, &g->finobj);
-    }
-    case GCSswpfinobj: {  /* sweep objects with finalizers */
-      return sweepstep(L, g, GCSswptobefnz, &g->tobefnz);
-    }
-    case GCSswptobefnz: {  /* sweep objects to be finalized */
-      return sweepstep(L, g, GCSswpend, NULL);
-    }
-    case GCSswpend: {  /* finish sweeps */
-      makewhite(g, g->mainthread);  /* sweep main thread */
-      checkSizes(L, g);
-      g->gcstate = GCScallfin;
-      return 0;
-    }
-    case GCScallfin: {  /* call remaining finalizers */
-      if (g->tobefnz && g->gckind != KGC_EMERGENCY) {
-        int n = runafewfinalizers(L);
-        return (n * GCFINALIZECOST);
-      }
-      else {  /* emergency mode or no more finalizers */
-        g->gcstate = GCSpause;  /* finish collection */
-        return 0;
-      }
-    }
-    default: lua_assert(0); return 0;
-  }
-}
-
-
-/*
-** advances the garbage collector until it reaches a state allowed
-** by 'statemask'
-*/
-void luaC_runtilstate (lua_State *L, int statesmask) {
-  global_State *g = G(L);
-  while (!testbit(statesmask, g->gcstate))
-    singlestep(L);
-}
-
-
-/*
-** get GC debt and convert it from Kb to 'work units' (avoid zero debt
-** and overflows)
-*/
-static l_mem getdebt (global_State *g) {
-  l_mem debt = g->GCdebt;
-  int stepmul = g->gcstepmul;
-  if (debt <= 0) return 0;  /* minimal debt */
-  else {
-    debt = (debt / STEPMULADJ) + 1;
-    debt = (debt < MAX_LMEM / stepmul) ? debt * stepmul : MAX_LMEM;
-    return debt;
-  }
-}
-
-/*
-** performs a basic GC step when collector is running
-*/
-void luaC_step (lua_State *L) {
-  global_State *g = G(L);
-  l_mem debt = getdebt(g);  /* GC deficit (be paid now) */
-  if (!g->gcrunning) {  /* not running? */
-    luaE_setdebt(g, -GCSTEPSIZE * 10);  /* avoid being called too often */
-    return;
-  }
-  do {  /* repeat until pause or enough "credit" (negative debt) */
-    lu_mem work = singlestep(L);  /* perform one single step */
-    debt -= work;
-  } while (debt > -GCSTEPSIZE && g->gcstate != GCSpause);
-  if (g->gcstate == GCSpause)
-    setpause(g);  /* pause until next cycle */
-  else {
-    debt = (debt / g->gcstepmul) * STEPMULADJ;  /* convert 'work units' to Kb */
-    luaE_setdebt(g, debt);
-    runafewfinalizers(L);
-  }
-}
-
-
-/*
-** Performs a full GC cycle; if 'isemergency', set a flag to avoid
-** some operations which could change the interpreter state in some
-** unexpected ways (running finalizers and shrinking some structures).
-** Before running the collection, check 'keepinvariant'; if it is true,
-** there may be some objects marked as black, so the collector has
-** to sweep all objects to turn them back to white (as white has not
-** changed, nothing will be collected).
-*/
-void luaC_fullgc (lua_State *L, int isemergency) {
-  global_State *g = G(L);
-  lua_assert(g->gckind == KGC_NORMAL);
-  if (isemergency) g->gckind = KGC_EMERGENCY;  /* set flag */
-  if (keepinvariant(g)) {  /* black objects? */
-    entersweep(L); /* sweep everything to turn them back to white */
-  }
-  /* finish any pending sweep phase to start a new cycle */
-  luaC_runtilstate(L, bitmask(GCSpause));
-  luaC_runtilstate(L, ~bitmask(GCSpause));  /* start new collection */
-  luaC_runtilstate(L, bitmask(GCScallfin));  /* run up to finalizers */
-  /* estimate must be correct after a full GC cycle */
-  lua_assert(g->GCestimate == gettotalbytes(g));
-  luaC_runtilstate(L, bitmask(GCSpause));  /* finish collection */
-  g->gckind = KGC_NORMAL;
-  setpause(g);
-}
-
-/* }====================================================== */
-
-