-/*\r
- see copyright notice in squirrel.h\r
-*/\r
-#include "sqpcheader.h"\r
-#include "sqopcodes.h"\r
-#include "sqvm.h"\r
-#include "sqfuncproto.h"\r
-#include "sqclosure.h"\r
-#include "sqstring.h"\r
-#include "sqtable.h"\r
-#include "sqarray.h"\r
-#include "squserdata.h"\r
-#include "sqclass.h"\r
-\r
-SQObjectPtr _null_;\r
-SQObjectPtr _true_(true);\r
-SQObjectPtr _false_(false);\r
-SQObjectPtr _one_((SQInteger)1);\r
-SQObjectPtr _minusone_((SQInteger)-1);\r
-\r
-SQSharedState::SQSharedState()\r
-{\r
- _compilererrorhandler = NULL;\r
- _printfunc = NULL;\r
- _debuginfo = false;\r
- _notifyallexceptions = false;\r
-}\r
-\r
-#define newsysstring(s) { \\r
- _systemstrings->push_back(SQString::Create(this,s)); \\r
- }\r
-\r
-#define newmetamethod(s) { \\r
- _metamethods->push_back(SQString::Create(this,s)); \\r
- _table(_metamethodsmap)->NewSlot(_metamethods->back(),(SQInteger)(_metamethods->size()-1)); \\r
- }\r
-\r
-bool CompileTypemask(SQIntVec &res,const SQChar *typemask)\r
-{\r
- SQInteger i = 0;\r
- \r
- SQInteger mask = 0;\r
- while(typemask[i] != 0) {\r
- \r
- switch(typemask[i]){\r
- case 'o': mask |= _RT_NULL; break;\r
- case 'i': mask |= _RT_INTEGER; break;\r
- case 'f': mask |= _RT_FLOAT; break;\r
- case 'n': mask |= (_RT_FLOAT | _RT_INTEGER); break;\r
- case 's': mask |= _RT_STRING; break;\r
- case 't': mask |= _RT_TABLE; break;\r
- case 'a': mask |= _RT_ARRAY; break;\r
- case 'u': mask |= _RT_USERDATA; break;\r
- case 'c': mask |= (_RT_CLOSURE | _RT_NATIVECLOSURE); break;\r
- case 'b': mask |= _RT_BOOL; break;\r
- case 'g': mask |= _RT_GENERATOR; break;\r
- case 'p': mask |= _RT_USERPOINTER; break;\r
- case 'v': mask |= _RT_THREAD; break;\r
- case 'x': mask |= _RT_INSTANCE; break;\r
- case 'y': mask |= _RT_CLASS; break;\r
- case 'r': mask |= _RT_WEAKREF; break;\r
- case '.': mask = -1; res.push_back(mask); i++; mask = 0; continue;\r
- case ' ': i++; continue; //ignores spaces\r
- default:\r
- return false;\r
- }\r
- i++;\r
- if(typemask[i] == '|') { \r
- i++; \r
- if(typemask[i] == 0)\r
- return false;\r
- continue; \r
- }\r
- res.push_back(mask);\r
- mask = 0;\r
- \r
- }\r
- return true;\r
-}\r
-\r
-SQTable *CreateDefaultDelegate(SQSharedState *ss,SQRegFunction *funcz)\r
-{\r
- SQInteger i=0;\r
- SQTable *t=SQTable::Create(ss,0);\r
- while(funcz[i].name!=0){\r
- SQNativeClosure *nc = SQNativeClosure::Create(ss,funcz[i].f);\r
- nc->_nparamscheck = funcz[i].nparamscheck;\r
- nc->_name = SQString::Create(ss,funcz[i].name);\r
- if(funcz[i].typemask && !CompileTypemask(nc->_typecheck,funcz[i].typemask))\r
- return NULL;\r
- t->NewSlot(SQString::Create(ss,funcz[i].name),nc);\r
- i++;\r
- }\r
- return t;\r
-}\r
-\r
-void SQSharedState::Init()\r
-{ \r
- _scratchpad=NULL;\r
- _scratchpadsize=0;\r
-#ifndef NO_GARBAGE_COLLECTOR\r
- _gc_chain=NULL;\r
-#endif\r
- sq_new(_stringtable,StringTable);\r
- sq_new(_metamethods,SQObjectPtrVec);\r
- sq_new(_systemstrings,SQObjectPtrVec);\r
- sq_new(_types,SQObjectPtrVec);\r
- _metamethodsmap = SQTable::Create(this,MT_LAST-1);\r
- //adding type strings to avoid memory trashing\r
- //types names\r
- newsysstring(_SC("null"));\r
- newsysstring(_SC("table"));\r
- newsysstring(_SC("array"));\r
- newsysstring(_SC("closure"));\r
- newsysstring(_SC("string"));\r
- newsysstring(_SC("userdata"));\r
- newsysstring(_SC("integer"));\r
- newsysstring(_SC("float"));\r
- newsysstring(_SC("userpointer"));\r
- newsysstring(_SC("function"));\r
- newsysstring(_SC("generator"));\r
- newsysstring(_SC("thread"));\r
- newsysstring(_SC("class"));\r
- newsysstring(_SC("instance"));\r
- newsysstring(_SC("bool"));\r
- //meta methods\r
- newmetamethod(MM_ADD);\r
- newmetamethod(MM_SUB);\r
- newmetamethod(MM_MUL);\r
- newmetamethod(MM_DIV);\r
- newmetamethod(MM_UNM);\r
- newmetamethod(MM_MODULO);\r
- newmetamethod(MM_SET);\r
- newmetamethod(MM_GET);\r
- newmetamethod(MM_TYPEOF);\r
- newmetamethod(MM_NEXTI);\r
- newmetamethod(MM_CMP);\r
- newmetamethod(MM_CALL);\r
- newmetamethod(MM_CLONED);\r
- newmetamethod(MM_NEWSLOT);\r
- newmetamethod(MM_DELSLOT);\r
- newmetamethod(MM_TOSTRING);\r
- newmetamethod(MM_NEWMEMBER);\r
- newmetamethod(MM_INHERITED);\r
-\r
- _constructoridx = SQString::Create(this,_SC("constructor"));\r
- _registry = SQTable::Create(this,0);\r
- _table_default_delegate=CreateDefaultDelegate(this,_table_default_delegate_funcz);\r
- _array_default_delegate=CreateDefaultDelegate(this,_array_default_delegate_funcz);\r
- _string_default_delegate=CreateDefaultDelegate(this,_string_default_delegate_funcz);\r
- _number_default_delegate=CreateDefaultDelegate(this,_number_default_delegate_funcz);\r
- _closure_default_delegate=CreateDefaultDelegate(this,_closure_default_delegate_funcz);\r
- _generator_default_delegate=CreateDefaultDelegate(this,_generator_default_delegate_funcz);\r
- _thread_default_delegate=CreateDefaultDelegate(this,_thread_default_delegate_funcz);\r
- _class_default_delegate=CreateDefaultDelegate(this,_class_default_delegate_funcz);\r
- _instance_default_delegate=CreateDefaultDelegate(this,_instance_default_delegate_funcz);\r
- _weakref_default_delegate=CreateDefaultDelegate(this,_weakref_default_delegate_funcz);\r
-\r
-}\r
-\r
-SQSharedState::~SQSharedState()\r
-{\r
- _constructoridx = _null_;\r
- _refs_table.Finalize();\r
- _table(_registry)->Finalize();\r
- _table(_metamethodsmap)->Finalize();\r
-// _refs_table = _null_;\r
- _registry = _null_;\r
- _metamethodsmap = _null_;\r
- while(!_systemstrings->empty()){\r
- _systemstrings->back()=_null_;\r
- _systemstrings->pop_back();\r
- }\r
- _thread(_root_vm)->Finalize();\r
- _root_vm = _null_;\r
- _table_default_delegate=_null_;\r
- _array_default_delegate=_null_;\r
- _string_default_delegate=_null_;\r
- _number_default_delegate=_null_;\r
- _closure_default_delegate=_null_;\r
- _generator_default_delegate=_null_;\r
- _thread_default_delegate=_null_;\r
- _class_default_delegate=_null_;\r
- _instance_default_delegate=_null_;\r
- _weakref_default_delegate=_null_;\r
- \r
-#ifndef NO_GARBAGE_COLLECTOR\r
- \r
- \r
- SQCollectable *t=_gc_chain;\r
- SQCollectable *nx=NULL;\r
- while(t){\r
- t->_uiRef++;\r
- t->Finalize();\r
- nx=t->_next;\r
- if(--t->_uiRef==0)\r
- t->Release();\r
- t=nx;\r
- }\r
- assert(_gc_chain==NULL); //just to proove a theory\r
- while(_gc_chain){\r
- _gc_chain->_uiRef++;\r
- _gc_chain->Release();\r
- }\r
-#endif\r
- sq_delete(_types,SQObjectPtrVec);\r
- sq_delete(_systemstrings,SQObjectPtrVec);\r
- sq_delete(_metamethods,SQObjectPtrVec);\r
- sq_delete(_stringtable,StringTable);\r
- if(_scratchpad)SQ_FREE(_scratchpad,_scratchpadsize);\r
-}\r
-\r
-\r
-SQInteger SQSharedState::GetMetaMethodIdxByName(const SQObjectPtr &name)\r
-{\r
- if(type(name) != OT_STRING)\r
- return -1;\r
- SQObjectPtr ret;\r
- if(_table(_metamethodsmap)->Get(name,ret)) {\r
- return _integer(ret);\r
- }\r
- return -1;\r
-}\r
-\r
-#ifndef NO_GARBAGE_COLLECTOR\r
-\r
-void SQSharedState::MarkObject(SQObjectPtr &o,SQCollectable **chain)\r
-{\r
- switch(type(o)){\r
- case OT_TABLE:_table(o)->Mark(chain);break;\r
- case OT_ARRAY:_array(o)->Mark(chain);break;\r
- case OT_USERDATA:_userdata(o)->Mark(chain);break;\r
- case OT_CLOSURE:_closure(o)->Mark(chain);break;\r
- case OT_NATIVECLOSURE:_nativeclosure(o)->Mark(chain);break;\r
- case OT_GENERATOR:_generator(o)->Mark(chain);break;\r
- case OT_THREAD:_thread(o)->Mark(chain);break;\r
- case OT_CLASS:_class(o)->Mark(chain);break;\r
- case OT_INSTANCE:_instance(o)->Mark(chain);break;\r
- default: break; //shutup compiler\r
- }\r
-}\r
-\r
-\r
-SQInteger SQSharedState::CollectGarbage(SQVM *vm)\r
-{\r
- SQInteger n=0;\r
- SQCollectable *tchain=NULL;\r
- SQVM *vms=_thread(_root_vm);\r
- \r
- vms->Mark(&tchain);\r
- SQInteger x = _table(_thread(_root_vm)->_roottable)->CountUsed();\r
- _refs_table.Mark(&tchain);\r
- MarkObject(_registry,&tchain);\r
- MarkObject(_metamethodsmap,&tchain);\r
- MarkObject(_table_default_delegate,&tchain);\r
- MarkObject(_array_default_delegate,&tchain);\r
- MarkObject(_string_default_delegate,&tchain);\r
- MarkObject(_number_default_delegate,&tchain);\r
- MarkObject(_generator_default_delegate,&tchain);\r
- MarkObject(_thread_default_delegate,&tchain);\r
- MarkObject(_closure_default_delegate,&tchain);\r
- MarkObject(_class_default_delegate,&tchain);\r
- MarkObject(_instance_default_delegate,&tchain);\r
- MarkObject(_weakref_default_delegate,&tchain);\r
- \r
- SQCollectable *t=_gc_chain;\r
- SQCollectable *nx=NULL;\r
- while(t){\r
- t->_uiRef++;\r
- t->Finalize();\r
- nx=t->_next;\r
- if(--t->_uiRef==0)\r
- t->Release();\r
- t=nx;\r
- n++;\r
- }\r
-\r
- t=tchain;\r
- while(t){\r
- t->UnMark();\r
- t=t->_next;\r
- }\r
- _gc_chain=tchain;\r
- SQInteger z = _table(_thread(_root_vm)->_roottable)->CountUsed();\r
- assert(z == x);\r
- return n;\r
-}\r
-#endif\r
-\r
-#ifndef NO_GARBAGE_COLLECTOR\r
-void SQCollectable::AddToChain(SQCollectable **chain,SQCollectable *c)\r
-{\r
- c->_prev=NULL;\r
- c->_next=*chain;\r
- if(*chain) (*chain)->_prev=c;\r
- *chain=c;\r
-}\r
-\r
-void SQCollectable::RemoveFromChain(SQCollectable **chain,SQCollectable *c)\r
-{\r
- if(c->_prev) c->_prev->_next=c->_next;\r
- else *chain=c->_next;\r
- if(c->_next)\r
- c->_next->_prev=c->_prev;\r
- c->_next=NULL;\r
- c->_prev=NULL;\r
-}\r
-#endif\r
-\r
-SQChar* SQSharedState::GetScratchPad(SQInteger size)\r
-{\r
- SQInteger newsize;\r
- if(size>0){\r
- if(_scratchpadsize<size){\r
- newsize=size+(size>>1);\r
- _scratchpad=(SQChar *)SQ_REALLOC(_scratchpad,_scratchpadsize,newsize);\r
- _scratchpadsize=newsize;\r
-\r
- }else if(_scratchpadsize>=(size<<5)){\r
- newsize=_scratchpadsize>>1;\r
- _scratchpad=(SQChar *)SQ_REALLOC(_scratchpad,_scratchpadsize,newsize);\r
- _scratchpadsize=newsize;\r
- }\r
- }\r
- return _scratchpad;\r
-}\r
-\r
-RefTable::RefTable()\r
-{\r
- AllocNodes(4);\r
-}\r
-\r
-void RefTable::Finalize()\r
-{\r
- RefNode *nodes = (RefNode *)&_buckets[_numofslots];\r
- for(SQUnsignedInteger n = 0; n < _numofslots; n++) {\r
- nodes->obj = _null_;\r
- nodes++;\r
- }\r
-}\r
-\r
-RefTable::~RefTable()\r
-{\r
- SQ_FREE(_buckets,_buffersize);\r
-}\r
-#ifndef NO_GARBAGE_COLLECTOR\r
-void RefTable::Mark(SQCollectable **chain)\r
-{\r
- RefNode *nodes = (RefNode *)&_buckets[_numofslots];\r
- for(SQUnsignedInteger n = 0; n < _numofslots; n++) {\r
- if(type(nodes->obj) != OT_NULL) {\r
- SQSharedState::MarkObject(nodes->obj,chain);\r
- }\r
- nodes++;\r
- }\r
-}\r
-#endif\r
-void RefTable::AddRef(SQObject &obj)\r
-{\r
- SQHash mainpos;\r
- RefNode *prev;\r
- RefNode *ref = Get(obj,mainpos,&prev,true);\r
- ref->refs++;\r
-}\r
-\r
-SQBool RefTable::Release(SQObject &obj)\r
-{\r
- SQHash mainpos;\r
- RefNode *prev;\r
- RefNode *ref = Get(obj,mainpos,&prev,false);\r
- if(ref) {\r
- if(--ref->refs == 0) {\r
- ref->obj = _null_;\r
- if(prev) {\r
- prev->next = ref->next;\r
- }\r
- else {\r
- _buckets[mainpos] = ref->next;\r
- }\r
- ref->next = _freelist;\r
- _freelist = ref;\r
- _slotused--;\r
- //<<FIXME>>test for shrink?\r
- return SQTrue;\r
- }\r
- }\r
- return SQFalse;\r
-}\r
-\r
-void RefTable::Resize(SQUnsignedInteger size)\r
-{\r
- RefNode **oldbuffer = _buckets;\r
- RefNode *oldnodes = (RefNode *)&_buckets[_numofslots];\r
- SQUnsignedInteger oldnumofslots = _numofslots;\r
- SQUnsignedInteger oldbuffersize = _buffersize;\r
- AllocNodes(size);\r
- //rehash\r
- for(SQUnsignedInteger n = 0; n < oldnumofslots; n++) {\r
- if(type(oldnodes->obj) != OT_NULL) {\r
- //add back;\r
- assert(oldnodes->refs != 0);\r
- RefNode *nn = Add(::HashObj(oldnodes->obj)&(_numofslots-1),oldnodes->obj);\r
- nn->refs = oldnodes->refs; \r
- oldnodes->obj = _null_;\r
- }\r
- oldnodes++;\r
- }\r
- SQ_FREE(oldbuffer,oldbuffersize);\r
-}\r
-\r
-RefTable::RefNode *RefTable::Add(SQHash mainpos,SQObject &obj)\r
-{\r
- RefNode *t = _buckets[mainpos];\r
- RefNode *newnode = _freelist;\r
- newnode->obj = obj;\r
- _buckets[mainpos] = newnode;\r
- _freelist = _freelist->next;\r
- newnode->next = t;\r
- assert(newnode->refs == 0);\r
- _slotused++;\r
- return newnode;\r
-}\r
-\r
-RefTable::RefNode *RefTable::Get(SQObject &obj,SQHash &mainpos,RefNode **prev,bool add)\r
-{\r
- RefNode *ref;\r
- mainpos = ::HashObj(obj)&(_numofslots-1);\r
- *prev = NULL;\r
- for (ref = _buckets[mainpos]; ref; ) {\r
- if(_rawval(ref->obj) == _rawval(obj) && type(ref->obj) == type(obj))\r
- break;\r
- *prev = ref;\r
- ref = ref->next;\r
- }\r
- if(ref == NULL && add) {\r
- if(_numofslots == _slotused) {\r
- Resize(_numofslots*2);\r
- }\r
- ref = Add(mainpos,obj);\r
- }\r
- return ref;\r
-}\r
-\r
-void RefTable::AllocNodes(SQUnsignedInteger size)\r
-{\r
- RefNode **bucks;\r
- RefNode *firstnode;\r
- _buffersize = size * sizeof(RefNode *) + size * sizeof(RefNode);\r
- bucks = (RefNode **)SQ_MALLOC(_buffersize);\r
- firstnode = (RefNode *)&bucks[size];\r
- RefNode *temp = firstnode;\r
- SQUnsignedInteger n;\r
- for(n = 0; n < size - 1; n++) {\r
- bucks[n] = NULL;\r
- temp->refs = 0;\r
- new (&temp->obj) SQObjectPtr;\r
- temp->next = temp+1;\r
- temp++;\r
- }\r
- bucks[n] = NULL;\r
- temp->refs = 0;\r
- new (&temp->obj) SQObjectPtr;\r
- temp->next = NULL;\r
- _freelist = firstnode;\r
- _buckets = bucks;\r
- _slotused = 0;\r
- _numofslots = size;\r
-}\r
-//////////////////////////////////////////////////////////////////////////\r
-//StringTable\r
-/*\r
-* The following code is based on Lua 4.0 (Copyright 1994-2002 Tecgraf, PUC-Rio.)\r
-* http://www.lua.org/copyright.html#4\r
-* http://www.lua.org/source/4.0.1/src_lstring.c.html\r
-*/\r
-\r
-StringTable::StringTable()\r
-{\r
- AllocNodes(4);\r
- _slotused = 0;\r
-}\r
-\r
-StringTable::~StringTable()\r
-{\r
- SQ_FREE(_strings,sizeof(SQString*)*_numofslots);\r
- _strings=NULL;\r
-}\r
-\r
-void StringTable::AllocNodes(SQInteger size)\r
-{\r
- _numofslots=size;\r
- //_slotused=0;\r
- _strings=(SQString**)SQ_MALLOC(sizeof(SQString*)*_numofslots);\r
- memset(_strings,0,sizeof(SQString*)*_numofslots);\r
-}\r
-\r
-SQString *StringTable::Add(const SQChar *news,SQInteger len)\r
-{\r
- if(len<0)\r
- len = (SQInteger)scstrlen(news);\r
- SQHash h = ::_hashstr(news,len)&(_numofslots-1);\r
- SQString *s;\r
- for (s = _strings[h]; s; s = s->_next){\r
- if(s->_len == len && (!memcmp(news,s->_val,rsl(len))))\r
- return s; //found\r
- }\r
-\r
- SQString *t=(SQString *)SQ_MALLOC(rsl(len)+sizeof(SQString));\r
- new (t) SQString;\r
- memcpy(t->_val,news,rsl(len));\r
- t->_val[len] = _SC('\0');\r
- t->_len = len;\r
- t->_hash = ::_hashstr(news,len);\r
- t->_next = _strings[h];\r
- _strings[h] = t;\r
- _slotused++;\r
- if (_slotused > _numofslots) /* too crowded? */\r
- Resize(_numofslots*2);\r
- return t;\r
-}\r
-\r
-void StringTable::Resize(SQInteger size)\r
-{\r
- SQInteger oldsize=_numofslots;\r
- SQString **oldtable=_strings;\r
- AllocNodes(size);\r
- for (SQInteger i=0; i<oldsize; i++){\r
- SQString *p = oldtable[i];\r
- while(p){\r
- SQString *next = p->_next;\r
- SQHash h = p->_hash&(_numofslots-1);\r
- p->_next = _strings[h];\r
- _strings[h] = p;\r
- p = next;\r
- }\r
- }\r
- SQ_FREE(oldtable,oldsize*sizeof(SQString*));\r
-}\r
-\r
-void StringTable::Remove(SQString *bs)\r
-{\r
- SQString *s;\r
- SQString *prev=NULL;\r
- SQHash h = bs->_hash&(_numofslots - 1);\r
- \r
- for (s = _strings[h]; s; ){\r
- if(s == bs){\r
- if(prev)\r
- prev->_next = s->_next;\r
- else\r
- _strings[h] = s->_next;\r
- _slotused--;\r
- SQInteger slen = s->_len;\r
- s->~SQString();\r
- SQ_FREE(s,sizeof(SQString) + rsl(slen));\r
- return;\r
- }\r
- prev = s;\r
- s = s->_next;\r
- }\r
- assert(0);//if this fail something is wrong\r
-}\r
+/*
+ see copyright notice in squirrel.h
+*/
+#include "sqpcheader.h"
+#include "sqopcodes.h"
+#include "sqvm.h"
+#include "sqfuncproto.h"
+#include "sqclosure.h"
+#include "sqstring.h"
+#include "sqtable.h"
+#include "sqarray.h"
+#include "squserdata.h"
+#include "sqclass.h"
+
+SQObjectPtr _null_;
+SQObjectPtr _true_(true);
+SQObjectPtr _false_(false);
+SQObjectPtr _one_((SQInteger)1);
+SQObjectPtr _minusone_((SQInteger)-1);
+
+SQSharedState::SQSharedState()
+{
+ _compilererrorhandler = NULL;
+ _printfunc = NULL;
+ _debuginfo = false;
+ _notifyallexceptions = false;
+}
+
+#define newsysstring(s) { \
+ _systemstrings->push_back(SQString::Create(this,s)); \
+ }
+
+#define newmetamethod(s) { \
+ _metamethods->push_back(SQString::Create(this,s)); \
+ _table(_metamethodsmap)->NewSlot(_metamethods->back(),(SQInteger)(_metamethods->size()-1)); \
+ }
+
+bool CompileTypemask(SQIntVec &res,const SQChar *typemask)
+{
+ SQInteger i = 0;
+
+ SQInteger mask = 0;
+ while(typemask[i] != 0) {
+
+ switch(typemask[i]){
+ case 'o': mask |= _RT_NULL; break;
+ case 'i': mask |= _RT_INTEGER; break;
+ case 'f': mask |= _RT_FLOAT; break;
+ case 'n': mask |= (_RT_FLOAT | _RT_INTEGER); break;
+ case 's': mask |= _RT_STRING; break;
+ case 't': mask |= _RT_TABLE; break;
+ case 'a': mask |= _RT_ARRAY; break;
+ case 'u': mask |= _RT_USERDATA; break;
+ case 'c': mask |= (_RT_CLOSURE | _RT_NATIVECLOSURE); break;
+ case 'b': mask |= _RT_BOOL; break;
+ case 'g': mask |= _RT_GENERATOR; break;
+ case 'p': mask |= _RT_USERPOINTER; break;
+ case 'v': mask |= _RT_THREAD; break;
+ case 'x': mask |= _RT_INSTANCE; break;
+ case 'y': mask |= _RT_CLASS; break;
+ case 'r': mask |= _RT_WEAKREF; break;
+ case '.': mask = -1; res.push_back(mask); i++; mask = 0; continue;
+ case ' ': i++; continue; //ignores spaces
+ default:
+ return false;
+ }
+ i++;
+ if(typemask[i] == '|') {
+ i++;
+ if(typemask[i] == 0)
+ return false;
+ continue;
+ }
+ res.push_back(mask);
+ mask = 0;
+
+ }
+ return true;
+}
+
+SQTable *CreateDefaultDelegate(SQSharedState *ss,SQRegFunction *funcz)
+{
+ SQInteger i=0;
+ SQTable *t=SQTable::Create(ss,0);
+ while(funcz[i].name!=0){
+ SQNativeClosure *nc = SQNativeClosure::Create(ss,funcz[i].f);
+ nc->_nparamscheck = funcz[i].nparamscheck;
+ nc->_name = SQString::Create(ss,funcz[i].name);
+ if(funcz[i].typemask && !CompileTypemask(nc->_typecheck,funcz[i].typemask))
+ return NULL;
+ t->NewSlot(SQString::Create(ss,funcz[i].name),nc);
+ i++;
+ }
+ return t;
+}
+
+void SQSharedState::Init()
+{
+ _scratchpad=NULL;
+ _scratchpadsize=0;
+#ifndef NO_GARBAGE_COLLECTOR
+ _gc_chain=NULL;
+#endif
+ sq_new(_stringtable,StringTable);
+ sq_new(_metamethods,SQObjectPtrVec);
+ sq_new(_systemstrings,SQObjectPtrVec);
+ sq_new(_types,SQObjectPtrVec);
+ _metamethodsmap = SQTable::Create(this,MT_LAST-1);
+ //adding type strings to avoid memory trashing
+ //types names
+ newsysstring(_SC("null"));
+ newsysstring(_SC("table"));
+ newsysstring(_SC("array"));
+ newsysstring(_SC("closure"));
+ newsysstring(_SC("string"));
+ newsysstring(_SC("userdata"));
+ newsysstring(_SC("integer"));
+ newsysstring(_SC("float"));
+ newsysstring(_SC("userpointer"));
+ newsysstring(_SC("function"));
+ newsysstring(_SC("generator"));
+ newsysstring(_SC("thread"));
+ newsysstring(_SC("class"));
+ newsysstring(_SC("instance"));
+ newsysstring(_SC("bool"));
+ //meta methods
+ newmetamethod(MM_ADD);
+ newmetamethod(MM_SUB);
+ newmetamethod(MM_MUL);
+ newmetamethod(MM_DIV);
+ newmetamethod(MM_UNM);
+ newmetamethod(MM_MODULO);
+ newmetamethod(MM_SET);
+ newmetamethod(MM_GET);
+ newmetamethod(MM_TYPEOF);
+ newmetamethod(MM_NEXTI);
+ newmetamethod(MM_CMP);
+ newmetamethod(MM_CALL);
+ newmetamethod(MM_CLONED);
+ newmetamethod(MM_NEWSLOT);
+ newmetamethod(MM_DELSLOT);
+ newmetamethod(MM_TOSTRING);
+ newmetamethod(MM_NEWMEMBER);
+ newmetamethod(MM_INHERITED);
+
+ _constructoridx = SQString::Create(this,_SC("constructor"));
+ _registry = SQTable::Create(this,0);
+ _table_default_delegate=CreateDefaultDelegate(this,_table_default_delegate_funcz);
+ _array_default_delegate=CreateDefaultDelegate(this,_array_default_delegate_funcz);
+ _string_default_delegate=CreateDefaultDelegate(this,_string_default_delegate_funcz);
+ _number_default_delegate=CreateDefaultDelegate(this,_number_default_delegate_funcz);
+ _closure_default_delegate=CreateDefaultDelegate(this,_closure_default_delegate_funcz);
+ _generator_default_delegate=CreateDefaultDelegate(this,_generator_default_delegate_funcz);
+ _thread_default_delegate=CreateDefaultDelegate(this,_thread_default_delegate_funcz);
+ _class_default_delegate=CreateDefaultDelegate(this,_class_default_delegate_funcz);
+ _instance_default_delegate=CreateDefaultDelegate(this,_instance_default_delegate_funcz);
+ _weakref_default_delegate=CreateDefaultDelegate(this,_weakref_default_delegate_funcz);
+
+}
+
+SQSharedState::~SQSharedState()
+{
+ _constructoridx = _null_;
+ _refs_table.Finalize();
+ _table(_registry)->Finalize();
+ _table(_metamethodsmap)->Finalize();
+// _refs_table = _null_;
+ _registry = _null_;
+ _metamethodsmap = _null_;
+ while(!_systemstrings->empty()){
+ _systemstrings->back()=_null_;
+ _systemstrings->pop_back();
+ }
+ _thread(_root_vm)->Finalize();
+ _root_vm = _null_;
+ _table_default_delegate=_null_;
+ _array_default_delegate=_null_;
+ _string_default_delegate=_null_;
+ _number_default_delegate=_null_;
+ _closure_default_delegate=_null_;
+ _generator_default_delegate=_null_;
+ _thread_default_delegate=_null_;
+ _class_default_delegate=_null_;
+ _instance_default_delegate=_null_;
+ _weakref_default_delegate=_null_;
+
+#ifndef NO_GARBAGE_COLLECTOR
+
+
+ SQCollectable *t=_gc_chain;
+ SQCollectable *nx=NULL;
+ while(t){
+ t->_uiRef++;
+ t->Finalize();
+ nx=t->_next;
+ if(--t->_uiRef==0)
+ t->Release();
+ t=nx;
+ }
+ assert(_gc_chain==NULL); //just to proove a theory
+ while(_gc_chain){
+ _gc_chain->_uiRef++;
+ _gc_chain->Release();
+ }
+#endif
+ sq_delete(_types,SQObjectPtrVec);
+ sq_delete(_systemstrings,SQObjectPtrVec);
+ sq_delete(_metamethods,SQObjectPtrVec);
+ sq_delete(_stringtable,StringTable);
+ if(_scratchpad)SQ_FREE(_scratchpad,_scratchpadsize);
+}
+
+
+SQInteger SQSharedState::GetMetaMethodIdxByName(const SQObjectPtr &name)
+{
+ if(type(name) != OT_STRING)
+ return -1;
+ SQObjectPtr ret;
+ if(_table(_metamethodsmap)->Get(name,ret)) {
+ return _integer(ret);
+ }
+ return -1;
+}
+
+#ifndef NO_GARBAGE_COLLECTOR
+
+void SQSharedState::MarkObject(SQObjectPtr &o,SQCollectable **chain)
+{
+ switch(type(o)){
+ case OT_TABLE:_table(o)->Mark(chain);break;
+ case OT_ARRAY:_array(o)->Mark(chain);break;
+ case OT_USERDATA:_userdata(o)->Mark(chain);break;
+ case OT_CLOSURE:_closure(o)->Mark(chain);break;
+ case OT_NATIVECLOSURE:_nativeclosure(o)->Mark(chain);break;
+ case OT_GENERATOR:_generator(o)->Mark(chain);break;
+ case OT_THREAD:_thread(o)->Mark(chain);break;
+ case OT_CLASS:_class(o)->Mark(chain);break;
+ case OT_INSTANCE:_instance(o)->Mark(chain);break;
+ default: break; //shutup compiler
+ }
+}
+
+
+SQInteger SQSharedState::CollectGarbage(SQVM *vm)
+{
+ SQInteger n=0;
+ SQCollectable *tchain=NULL;
+ SQVM *vms=_thread(_root_vm);
+
+ vms->Mark(&tchain);
+ SQInteger x = _table(_thread(_root_vm)->_roottable)->CountUsed();
+ _refs_table.Mark(&tchain);
+ MarkObject(_registry,&tchain);
+ MarkObject(_metamethodsmap,&tchain);
+ MarkObject(_table_default_delegate,&tchain);
+ MarkObject(_array_default_delegate,&tchain);
+ MarkObject(_string_default_delegate,&tchain);
+ MarkObject(_number_default_delegate,&tchain);
+ MarkObject(_generator_default_delegate,&tchain);
+ MarkObject(_thread_default_delegate,&tchain);
+ MarkObject(_closure_default_delegate,&tchain);
+ MarkObject(_class_default_delegate,&tchain);
+ MarkObject(_instance_default_delegate,&tchain);
+ MarkObject(_weakref_default_delegate,&tchain);
+
+ SQCollectable *t=_gc_chain;
+ SQCollectable *nx=NULL;
+ while(t){
+ t->_uiRef++;
+ t->Finalize();
+ nx=t->_next;
+ if(--t->_uiRef==0)
+ t->Release();
+ t=nx;
+ n++;
+ }
+
+ t=tchain;
+ while(t){
+ t->UnMark();
+ t=t->_next;
+ }
+ _gc_chain=tchain;
+ SQInteger z = _table(_thread(_root_vm)->_roottable)->CountUsed();
+ assert(z == x);
+ return n;
+}
+#endif
+
+#ifndef NO_GARBAGE_COLLECTOR
+void SQCollectable::AddToChain(SQCollectable **chain,SQCollectable *c)
+{
+ c->_prev=NULL;
+ c->_next=*chain;
+ if(*chain) (*chain)->_prev=c;
+ *chain=c;
+}
+
+void SQCollectable::RemoveFromChain(SQCollectable **chain,SQCollectable *c)
+{
+ if(c->_prev) c->_prev->_next=c->_next;
+ else *chain=c->_next;
+ if(c->_next)
+ c->_next->_prev=c->_prev;
+ c->_next=NULL;
+ c->_prev=NULL;
+}
+#endif
+
+SQChar* SQSharedState::GetScratchPad(SQInteger size)
+{
+ SQInteger newsize;
+ if(size>0){
+ if(_scratchpadsize<size){
+ newsize=size+(size>>1);
+ _scratchpad=(SQChar *)SQ_REALLOC(_scratchpad,_scratchpadsize,newsize);
+ _scratchpadsize=newsize;
+
+ }else if(_scratchpadsize>=(size<<5)){
+ newsize=_scratchpadsize>>1;
+ _scratchpad=(SQChar *)SQ_REALLOC(_scratchpad,_scratchpadsize,newsize);
+ _scratchpadsize=newsize;
+ }
+ }
+ return _scratchpad;
+}
+
+RefTable::RefTable()
+{
+ AllocNodes(4);
+}
+
+void RefTable::Finalize()
+{
+ RefNode *nodes = (RefNode *)&_buckets[_numofslots];
+ for(SQUnsignedInteger n = 0; n < _numofslots; n++) {
+ nodes->obj = _null_;
+ nodes++;
+ }
+}
+
+RefTable::~RefTable()
+{
+ SQ_FREE(_buckets,_buffersize);
+}
+#ifndef NO_GARBAGE_COLLECTOR
+void RefTable::Mark(SQCollectable **chain)
+{
+ RefNode *nodes = (RefNode *)&_buckets[_numofslots];
+ for(SQUnsignedInteger n = 0; n < _numofslots; n++) {
+ if(type(nodes->obj) != OT_NULL) {
+ SQSharedState::MarkObject(nodes->obj,chain);
+ }
+ nodes++;
+ }
+}
+#endif
+void RefTable::AddRef(SQObject &obj)
+{
+ SQHash mainpos;
+ RefNode *prev;
+ RefNode *ref = Get(obj,mainpos,&prev,true);
+ ref->refs++;
+}
+
+SQBool RefTable::Release(SQObject &obj)
+{
+ SQHash mainpos;
+ RefNode *prev;
+ RefNode *ref = Get(obj,mainpos,&prev,false);
+ if(ref) {
+ if(--ref->refs == 0) {
+ ref->obj = _null_;
+ if(prev) {
+ prev->next = ref->next;
+ }
+ else {
+ _buckets[mainpos] = ref->next;
+ }
+ ref->next = _freelist;
+ _freelist = ref;
+ _slotused--;
+ //<<FIXME>>test for shrink?
+ return SQTrue;
+ }
+ }
+ return SQFalse;
+}
+
+void RefTable::Resize(SQUnsignedInteger size)
+{
+ RefNode **oldbuffer = _buckets;
+ RefNode *oldnodes = (RefNode *)&_buckets[_numofslots];
+ SQUnsignedInteger oldnumofslots = _numofslots;
+ SQUnsignedInteger oldbuffersize = _buffersize;
+ AllocNodes(size);
+ //rehash
+ for(SQUnsignedInteger n = 0; n < oldnumofslots; n++) {
+ if(type(oldnodes->obj) != OT_NULL) {
+ //add back;
+ assert(oldnodes->refs != 0);
+ RefNode *nn = Add(::HashObj(oldnodes->obj)&(_numofslots-1),oldnodes->obj);
+ nn->refs = oldnodes->refs;
+ oldnodes->obj = _null_;
+ }
+ oldnodes++;
+ }
+ SQ_FREE(oldbuffer,oldbuffersize);
+}
+
+RefTable::RefNode *RefTable::Add(SQHash mainpos,SQObject &obj)
+{
+ RefNode *t = _buckets[mainpos];
+ RefNode *newnode = _freelist;
+ newnode->obj = obj;
+ _buckets[mainpos] = newnode;
+ _freelist = _freelist->next;
+ newnode->next = t;
+ assert(newnode->refs == 0);
+ _slotused++;
+ return newnode;
+}
+
+RefTable::RefNode *RefTable::Get(SQObject &obj,SQHash &mainpos,RefNode **prev,bool add)
+{
+ RefNode *ref;
+ mainpos = ::HashObj(obj)&(_numofslots-1);
+ *prev = NULL;
+ for (ref = _buckets[mainpos]; ref; ) {
+ if(_rawval(ref->obj) == _rawval(obj) && type(ref->obj) == type(obj))
+ break;
+ *prev = ref;
+ ref = ref->next;
+ }
+ if(ref == NULL && add) {
+ if(_numofslots == _slotused) {
+ Resize(_numofslots*2);
+ }
+ ref = Add(mainpos,obj);
+ }
+ return ref;
+}
+
+void RefTable::AllocNodes(SQUnsignedInteger size)
+{
+ RefNode **bucks;
+ RefNode *firstnode;
+ _buffersize = size * sizeof(RefNode *) + size * sizeof(RefNode);
+ bucks = (RefNode **)SQ_MALLOC(_buffersize);
+ firstnode = (RefNode *)&bucks[size];
+ RefNode *temp = firstnode;
+ SQUnsignedInteger n;
+ for(n = 0; n < size - 1; n++) {
+ bucks[n] = NULL;
+ temp->refs = 0;
+ new (&temp->obj) SQObjectPtr;
+ temp->next = temp+1;
+ temp++;
+ }
+ bucks[n] = NULL;
+ temp->refs = 0;
+ new (&temp->obj) SQObjectPtr;
+ temp->next = NULL;
+ _freelist = firstnode;
+ _buckets = bucks;
+ _slotused = 0;
+ _numofslots = size;
+}
+//////////////////////////////////////////////////////////////////////////
+//StringTable
+/*
+* The following code is based on Lua 4.0 (Copyright 1994-2002 Tecgraf, PUC-Rio.)
+* http://www.lua.org/copyright.html#4
+* http://www.lua.org/source/4.0.1/src_lstring.c.html
+*/
+
+StringTable::StringTable()
+{
+ AllocNodes(4);
+ _slotused = 0;
+}
+
+StringTable::~StringTable()
+{
+ SQ_FREE(_strings,sizeof(SQString*)*_numofslots);
+ _strings=NULL;
+}
+
+void StringTable::AllocNodes(SQInteger size)
+{
+ _numofslots=size;
+ //_slotused=0;
+ _strings=(SQString**)SQ_MALLOC(sizeof(SQString*)*_numofslots);
+ memset(_strings,0,sizeof(SQString*)*_numofslots);
+}
+
+SQString *StringTable::Add(const SQChar *news,SQInteger len)
+{
+ if(len<0)
+ len = (SQInteger)scstrlen(news);
+ SQHash h = ::_hashstr(news,len)&(_numofslots-1);
+ SQString *s;
+ for (s = _strings[h]; s; s = s->_next){
+ if(s->_len == len && (!memcmp(news,s->_val,rsl(len))))
+ return s; //found
+ }
+
+ SQString *t=(SQString *)SQ_MALLOC(rsl(len)+sizeof(SQString));
+ new (t) SQString;
+ memcpy(t->_val,news,rsl(len));
+ t->_val[len] = _SC('\0');
+ t->_len = len;
+ t->_hash = ::_hashstr(news,len);
+ t->_next = _strings[h];
+ _strings[h] = t;
+ _slotused++;
+ if (_slotused > _numofslots) /* too crowded? */
+ Resize(_numofslots*2);
+ return t;
+}
+
+void StringTable::Resize(SQInteger size)
+{
+ SQInteger oldsize=_numofslots;
+ SQString **oldtable=_strings;
+ AllocNodes(size);
+ for (SQInteger i=0; i<oldsize; i++){
+ SQString *p = oldtable[i];
+ while(p){
+ SQString *next = p->_next;
+ SQHash h = p->_hash&(_numofslots-1);
+ p->_next = _strings[h];
+ _strings[h] = p;
+ p = next;
+ }
+ }
+ SQ_FREE(oldtable,oldsize*sizeof(SQString*));
+}
+
+void StringTable::Remove(SQString *bs)
+{
+ SQString *s;
+ SQString *prev=NULL;
+ SQHash h = bs->_hash&(_numofslots - 1);
+
+ for (s = _strings[h]; s; ){
+ if(s == bs){
+ if(prev)
+ prev->_next = s->_next;
+ else
+ _strings[h] = s->_next;
+ _slotused--;
+ SQInteger slen = s->_len;
+ s->~SQString();
+ SQ_FREE(s,sizeof(SQString) + rsl(slen));
+ return;
+ }
+ prev = s;
+ s = s->_next;
+ }
+ assert(0);//if this fail something is wrong
+}
projects / supertux.git / blobdiff