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* フォーラムメモ [#fbc90ba3]
#contents
** 自分自身のプロパティアクセサを呼び出すとフリーズ [#x7fb62c5]
- ライブラリバージョン : r564
:コールトレース|
#code(){{
GameProject.exe!asCArray<asCScriptFunction *>::operator[](unsigned int index=0) Line 147 + 0x6 Bytes C++
GameProject.exe!asCContext::CallInterfaceMethod(asCScriptFunction * func=0x0a8e1058) Line 1254 + 0x15 Bytes C++
GameProject.exe!asCContext::ExecuteNext() Line 2790 C++
GameProject.exe!asCContext::Execute() Line 1004 + 0x8 Bytes C++
GameProject.exe!base::ags::ContextHandle::execute() Line 104 + 0x23 Bytes C++
GameProject.exe!app::scene::SceneASTest::onSceneStart() Line 67 C++
GameProject.exe!app::Application::beginSceneProcess() Line 191 + 0x23 Bytes C++
GameProject.exe!app::Application::execute() Line 99 + 0xc Bytes C++
GameProject.exe!`anonymous namespace'::t_executeApplication() Line 50 + 0xb Bytes C++
GameProject.exe!app::EntryPoint::run() Line 73 C++
GameProject.exe!wmain(int __formal=1, int __formal=1) Line 16 C++
GameProject.exe!__tmainCRTStartup() Line 594 + 0x19 Bytes C
GameProject.exe!wmainCRTStartup() Line 414 C
}}
:ASコード|
#code(c,){{
class Vector3
{
float x;
float y;
float z;
};
class Hoge
{
const Vector3 get_pos()const
{
return mPos;
}
const Vector3 foo()const
{
return pos;
}
Vector3 mPos;
};
void main()
{
Hoge h;
const Vector3 vec = h.foo();
}
}}
#hr
#code(c,){{
class Vector3
{
float x;
float y;
float z;
};
class Hoge
{
const Vector3 get_pos() { return mPos; }
const Vector3 foo() { return pos; }
const Vector3 zoo() { return get_pos(); }
Vector3 mPos;
};
void main()
{
Hoge h;
Vector3 vec;
vec = h.zoo(); // ok
vec = h.foo(); // runtime exception
}
}}
__Hoge_foo.txt
#code(){{
Temps: 1
0 0 * PUSH 1
1 1 * PshV4 v0
2 2 * CALLSYS 17 (void _builtin_object_::_beh_4_())
- 11,27 -
4 1 * SUSPEND
5 1 * PSF v0
6 2 * CALLINTF 86 (const Vector3 Hoge::get_pos())
8 1 * STOREOBJ v1
9 1 * LOADOBJ v1
10 1 * 0:
10 1 * FREE v0, 11276368
12 0 * RET 1
}}
__Hoge_zoo.txt
#code(,){{
Temps: 1
0 0 * PUSH 1
1 1 * PshV4 v0
2 2 * CALLSYS 17 (void _builtin_object_::_beh_4_())
- 12,27 -
4 1 * SUSPEND
5 1 * PshV4 v0
6 2 * CALLINTF 86 (const Vector3 Hoge::get_pos())
8 1 * STOREOBJ v1
9 1 * LOADOBJ v1
10 1 * 0:
10 1 * FREE v0, 11276368
12 0 * RET 1
}}
** opAssignを定義するとコンパイル時にAssert [#c92f9374]
- ライブラリバージョン : 2.18.1
:エラーメッセージ|
Assertion failed: tempVariables.GetLength() == 0, file ..\..\source\as_compiler.cpp, line 643
:コールトレース|
#code(){{
msvcr80d.dll!_wassert(const wchar_t * expr=0x007013cc, const wchar_t * filename=0x00701174, unsigned int lineno=643) 行 212 C
GameProject.exe!asCCompiler::CompileStatementBlock(asCScriptNode * block=0x0a8c1640, bool ownVariableScope=false, bool * hasReturn=0x0012b2e3, asCByteCode * bc=0x0012b2a0) 行 643 + 0x29 バイト C++
GameProject.exe!asCCompiler::CompileFunction(asCBuilder * builder=0x0a8e2b08, asCScriptCode * script=0x0a8e2800, asCScriptNode * func=0x0a8e2878, asCScriptFunction * outFunc=0x0a8e3c10) 行 324 C++
GameProject.exe!asCBuilder::CompileFunctions() 行 524 C++
GameProject.exe!asCBuilder::Build() 行 184 C++
}}
:ASコード|
#code(c,){{
class Hoge
{
int mValue;
Hoge()
{
mValue = 0;
}
Hoge@ opAssign(const Hoge &in aObj)
{
mValue = aObj.mValue;
return @this;
}
};
void main()
{
Hoge a = Hoge();
}
}}
** デストラクタが呼ばれない [#v821eb8e]
#code(c,){{
//-----------------------------------------------------------
// script code
class ObjType
{
};
class HaveObj
{
HaveObj()
{
Print( "HaveObj::ctor\n" );
}
~HaveObj()
{
Print( "HaveObj::dtor\n" );
}
ObjType o;
};
class HaveHandle
{
HaveHandle()
{
Print( "HaveHandle::ctor\n" );
}
~HaveHandle()
{
Print( "HaveHandle::dtor\n" );
}
ObjType@ o;
};
void testCase1()
{
Print( "testCase1 start\n" );
{
HaveObj o;
}// call o.~HaveObj();
{
HaveHandle o;
}// not call o.~HaveHandle();
Print( "testCase1 end\n" );
}
void main()
{
testCase1();
}
//-----------------------------------------------------------
//-----------------------------------------------------------
// output
testCase1 start
HaveObj::ctor
HaveObj::dtor
HaveHandle::ctor
testCase1 end
//-----------------------------------------------------------
}}
回答
As with any language with automatic memory management, it can be hard to predict when the destructor is called.
In your case you have created a situation where the ordinary reference counting is not enough to control the life time of the objects, so the garbage collector is notified to keep a watch on the object instance. However, the garbage collector is not invoked automatically by the script engine (so that the application will have full control of when that is done). This means that unless you manually call the GC, the object will only be destroyed when you release the script engine.
** 配列を使った循環参照状態を記述するとメモリリーク [#sf6cca03]
- ライブラリバージョン : r575
:C++コード|
#code(c,){{
//-----------------------------------------------------------
// C++ source code
namespace
{
// alloc counter
int t_allocCount = 0;
// alloc function
void* t_alloc( const size_t aSize )
{
++t_allocCount;
return std::malloc( aSize );
}
// free cuntion
void t_free( void* aPtr )
{
std::free( aPtr );
--t_allocCount;
}
}
int main(int argc, char **argv)
{
// set allocator
asSetGlobalMemoryFunctions( t_alloc , t_free );
// Create the script engine
asIScriptEngine *engine = asCreateScriptEngine(ANGELSCRIPT_VERSION);
// Compile
asIScriptModule *mod = engine->GetModule(0, asGM_ALWAYS_CREATE);
mod->AddScriptSection("script",
"class Hoge"
"{"
" Hoge(){}"
" Hoge(HogeManager&){}"
"};"
"class HogeManager"
"{"
" Hoge[] hoges;"
"};"
, 0);
mod->Build();
// Release engine
engine->Release();
// check
assert( t_allocCount == 0 );
}
}}
:対処|
#code(c,){{
// as_scriptengine.cpp L490付近
GarbageCollect(asGC_FULL_CYCLE);
FreeUnusedGlobalProperties();
ClearUnusedTypes();
// もう一度，GCを走らせる
GarbageCollect(asGC_FULL_CYCLE);
}}
** enumの文字列かぶりで無限ループ [#vf385fad]
- ライブラリバージョン : r575
:スクリプトコード|
#code(c,){{
enum Kind
{
Kind_A
, Kind_A // This code gives name conflict error and infinite loop.
};
}}
** asGC_ONE_STEPは想定した動きになっているのか [#aec6b6ad]
- ライブラリバージョン : r586
:code|
#code(c,){{
void main()
{
// Create the script engine
asIScriptEngine *engine = asCreateScriptEngine(ANGELSCRIPT_VERSION);
// Register Function
RegisterScriptString(engine);
engine->RegisterGlobalFunction("void Print(string &in)", asFUNCTION(PrintString_Generic), asCALL_GENERIC);
// Compile
asIScriptModule *mod = engine->GetModule(0, asGM_ALWAYS_CREATE);
mod->AddScriptSection("script",
"class Obj{};"
"class Hoge"
"{"
" Hoge(){ Print(\"ctor\\n\"); }"
" ~Hoge(){ Print(\"dtor\\n\"); }"
" Obj@ obj;"
"};"
"void main()"
"{"
" Hoge hoge;"
"};"
, 0);
mod->Build();
// Context Create
asIScriptContext *ctx = engine->CreateContext();
// Loop
while ( true )
{
// Execute
printf("----- execute\n");
ctx->Prepare(mod->GetFunctionIdByDecl("void main()"));
ctx->Execute();
// GC
const int GC_STEP_COUNT_PER_FRAME = 10000;
for ( int i = 0; i < GC_STEP_COUNT_PER_FRAME; ++i )
{
engine->GarbageCollect(asGC_ONE_STEP);
}
// Check status
{
asUINT currentSize = asUINT();
asUINT totalDestroyed = asUINT();
asUINT totalDetected = asUINT();
engine->GetGCStatistics(¤tSize , &totalDestroyed , &totalDetected );
printf("(%lu,%lu,%lu)\n" , currentSize , totalDestroyed , totalDetected );
}
// Wait to input key
while(!getch()){}
}
// Release
ctx->Release();
engine->Release();
}
}}
:output|
#code(){{
----- execute
ctor
dtor
(8,1,0)
----- execute
ctor
(9,1,0)
----- execute
ctor
(10,1,0)
----- execute
ctor
(11,1,0)
----- execute
ctor
(12,1,0)
----- execute
ctor
(13,1,0)
----- execute
ctor
(14,1,0)
}}
** as_restore.cppの修正箇所 [#h2cd7e5f]
:revision|
r589
:Not work on Big Endian Environment(L1398,L1410,L1451,L1473,L1488)|
#code(c,){{
// src
asWORD w = (asWORD)(tmp[0]>>16);
// fixed
asWORD w = *(((asWORD*)tmp)+1);
}}
:Not work on Big Endian Environment(L1587,L1600,L1637,L1661,L1678,L1727)|
#code(c,){{
// src
*bc += asDWORD(w)<<16;
// fixed
*(((asWORD*)bc)+1) = w;
}}
:miss spell(L1497)|
#code(c,){{
// src
asDWORD dw = tmp[2];
WRITE_NUM(w);
// fixed
asDWORD dw = tmp[2];
WRITE_NUM(dw);
}}
:miss spell(L1642,L1666,L1683)|
#code(c,){{
// src
*(WORD*)bc = w;
// fixed
*(asWORD*)bc = w;
}}
:miss spell(L1646)|
#code(c,){{
// src
*(((WORD*)bc)+1) = w;
// fixed
*(((asWORD*)bc)+1) = w;
}}
** テンプレートのメソッドを呼ぶスクリプトコードをSaveByteCode＆LoadByteCodeすると落ちる [#v4cad29a]
:リビジョン|
r589
:script code|
#code(c,){{
void main()
{
array< int > intArray = {0,1,2};
uint tmp = intArray.length(); // program stoped while module->LoadByteCode() Processing
};
}}
:freeze code pos|
#code(c,){{
// as_restore.cpp L1937
else if( c == asBC_CALL ||
c == asBC_CALLINTF ||
c == asBC_CALLSYS )
{
// Translate the index to the func id
int *fid = (int*)&bc[n+1];
*fid = FindFunction(*fid)->id; // null pointer access
}
}}
:fix patch|
*** fix patch [#mba16a13]
:as_restore.cpp|
#code(c,){{
void asCRestore::WriteObjectType(asCObjectType* ot)
{
char ch;
// Only write the object type name
if( ot )
{
// Check for template instances/specializations
if( ot->templateSubType.GetTokenType() != ttUnrecognizedToken &&
ot != engine->defaultArrayObjectType )
{
ch = 'a';
WRITE_NUM(ch);
if( ot->templateSubType.IsObject() )
{
ch = 's';
WRITE_NUM(ch);
WriteObjectType(ot->templateSubType.GetObjectType());
if( ot->templateSubType.IsObjectHandle() )
ch = 'h';
else
ch = 'o';
WRITE_NUM(ch);
#if 1
ch = 'o';
WRITE_NUM(ch);
WriteString(&ot->name);
#endif
}
else
{
ch = 't';
WRITE_NUM(ch);
eTokenType t = ot->templateSubType.GetTokenType();
WRITE_NUM(t);
}
}
else if( ot->flags & asOBJ_TEMPLATE_SUBTYPE )
{
ch = 's';
WRITE_NUM(ch);
WriteString(&ot->name);
}
else
{
ch = 'o';
WRITE_NUM(ch);
WriteString(&ot->name);
}
}
else
{
ch = '\0';
WRITE_NUM(ch);
}
}
asCObjectType* asCRestore::ReadObjectType()
{
asCObjectType *ot;
char ch;
READ_NUM(ch);
if( ch == 'a' )
{
READ_NUM(ch);
if( ch == 's' )
{
#if 0
ot = ReadObjectType();
asCDataType dt = asCDataType::CreateObject(ot, false);
READ_NUM(ch);
if( ch == 'h' )
dt.MakeHandle(true);
dt.MakeArray(engine);
ot = dt.GetObjectType();
asASSERT(ot);
#else
asCObjectType* subOT = ReadObjectType();
asCDataType subDT = asCDataType::CreateObject(subOT, false);
asCDataType dt = asCDataType::CreateObject(subOT, false);
READ_NUM(ch);
if ( ch == 'h' )
{
subDT.MakeHandle(true);
dt.MakeHandle(true);
}
else if ( ch == 'o' )
{
}
else
{
assert(false);
}
ot = ReadObjectType();
ot->templateSubType = subDT;
subOT->AddRef();
asCObjectType* tmplOT = ReadObjectType();
dt.MakeTemplateInstanceType(engine,tmplOT);
ot = dt.GetObjectType();
#endif
}
else
{
eTokenType tokenType;
READ_NUM(tokenType);
asCDataType dt = asCDataType::CreatePrimitive(tokenType, false);
dt.MakeArray(engine);
ot = dt.GetObjectType();
asASSERT(ot);
}
}
else if( ch == 's' )
{
// Read the name of the template subtype
asCString typeName;
ReadString(&typeName);
// Find the template subtype
for( asUINT n = 0; n < engine->templateSubTypes.GetLength(); n++ )
{
if( engine->templateSubTypes[n] && engine->templateSubTypes[n]->name == typeName )
{
ot = engine->templateSubTypes[n];
break;
}
}
// TODO: Should give a friendly error in case the template type isn't found
asASSERT(ot);
}
else if( ch == 'o' )
{
// Read the object type name
asCString typeName;
ReadString(&typeName);
if( typeName.GetLength() && typeName != "_builtin_object_" && typeName != "_builtin_function_" )
{
// Find the object type
ot = module->GetObjectType(typeName.AddressOf());
if( !ot )
ot = engine->GetObjectType(typeName.AddressOf());
asASSERT(ot);
}
else if( typeName == "_builtin_object_" )
{
ot = &engine->scriptTypeBehaviours;
}
else if( typeName == "_builtin_function_" )
{
ot = &engine->functionBehaviours;
}
else
assert( false );
}
else
{
// No object type
assert( ch == '\0' );
ot = 0;
}
return ot;
}
}}
:as_datatype.h|
#code(c,){{
int MakeHandle(bool b, bool acceptHandleForScope = false);
int MakeArray(asCScriptEngine *engine);
int MakeReference(bool b);
int MakeReadOnly(bool b);
int MakeHandleToConst(bool b);
#if 1
int MakeTemplateInstanceType(asCScriptEngine *engine,asCObjectType*);
#endif
}}
:as_datatype.cpp|
#code(c,){{
#if 1
int asCDataType::MakeTemplateInstanceType(asCScriptEngine *engine,asCObjectType* templateOT)
{
bool tmpIsReadOnly = isReadOnly;
isReadOnly = false;
asCObjectType *at = engine->GetTemplateInstanceType(templateOT, *this);
isReadOnly = tmpIsReadOnly;
isObjectHandle = false;
isConstHandle = false;
objectType = at;
tokenType = ttIdentifier;
return 0;
}
#endif
}}
** as_restore.cppの修正箇所 その２ [#c5750753]
r594
''Not work on Big Endian Environment(L1580,L1615,L1624,L1699,L1710)''
#code(c,){{
// src
*bc++ = b;
// fixed
*(asBYTE*)(bc) = b;
++bc;
}}
''Not work on Big Endian Environment(L1600.L1637,L1661,L1678,L1727)''
#code(c,){{
// src
*bc = b;
// fixed
*(asBYTE*)(bc) = b;
}}
** load byte code failed [#p4787cf6]
:Revision|
r595
Assertion failed at loading byte code.
#code(c,){{
// Succeed case
class Hoge {};
class HogeManager
{
array< Hoge >@ hogeArray;
};
}}
#code(c,)){{
// Failed case
class HogeManager
{
array< Hoge >@ hogeArray;
};
class Hoge {};
}}
:Message|
Assertion failed: ot, file ..\..\source\as_restore.cpp, line 1244
** load byte code failed part2 [#z3ed8e59]
:Revision|
r609
Assertion failed at loading byte code.
#code(c,)){{
// Failed case
class HogeManager
{
HogeManager()
{
array< Hoge >@ hogeArray;
}
};
class Hoge {};
}}
:Message|
Assertion failed: ot, file ..\..\source\as_restore.cpp, line 1299
** memory leak part2 [#z3ed8e59]
:Revision|
r604
Add 'array' object method
#code(c,){{
// scriptarray.cpp
namespace
{
void t_hoge(asIScriptGeneric*){}
}
void RegisterScriptArray_Generic(asIScriptEngine *engine)
{
...
r = engine->RegisterObjectMethod("array<T>", "void hoge(const T&in)" , asFUNCTION(t_hoge), asCALL_GENERIC); assert( r >= 0 );
}
}}
main.cpp
#code(c,){{
//-----------------------------------------------------------
// C++ source code
namespace
{
// alloc counter
int t_allocCount = 0;
// alloc function
void* t_alloc( const size_t aSize )
{
++t_allocCount;
return std::malloc( aSize );
}
// free cuntion
void t_free( void* aPtr )
{
std::free( aPtr );
--t_allocCount;
}
}
int main(int argc, char **argv)
{
// set allocator
asSetGlobalMemoryFunctions( t_alloc , t_free );
// Create the script engine
asIScriptEngine *engine = asCreateScriptEngine(ANGELSCRIPT_VERSION);
// Register array class
RegisterScriptArray_Generic(engine);
// Compile
asIScriptModule *mod = engine->GetModule(0, asGM_ALWAYS_CREATE);
mod->AddScriptSection("script",
"class Hoge"
"{"
" HogeManager@ hogeManager;"
"};"
"class HogeManager"
"{"
" array< Hoge >@ hoges;"
"};"
, 0);
mod->Build();
// Release engine
engine->Release();
// check
assert( t_allocCount == 0 ); // assertion failed
return 0;
}
}}
** load byte code failed part3 [#nf6a91f6]
:Revision|
r609
:Script Code|
#code(c,){{
array< ColorKind > COLOR_KIND_TABLE = { ColorKind_Red };
enum ColorKind
{
ColorKind_Red
};
}}
:Call stack trace|
Maybe null pointer access.
msvc8.exe!asCRestore::TranslateFunction(asCScriptFunction * func=0x003ed990) Line 2011 + 0x11 Byte C++
msvc8.exe!asCRestore::Restore() Line 358 C++
msvc8.exe!asCModule::LoadByteCode(asIBinaryStream * in=0x00ad7018) Line 1237 + 0xb Byte C++
** load byte code failed part4 [#bd445078]
:Revision|
r613
:Script Code|
#code(c,){{
interface IObj {};
class Hoge : IObj {};
void main()
{
Hoge h;
IObj@ objHandle = h;
Hoge@ hogeHandle = cast< Hoge@ >( objHandle );
};
}}
Crash at as_context.cpp L2866.
** build failed [#b9b4e0f1]
:Revision|
r614
:ScriptCode|
#code(c,){{
class Obj {};
class Hoge
{
const Obj obj()const { return Obj(); }
};
class Foo
{
Foo()
{
Hoge h;
Obj tmpObj = h.obj(); /* OK */
mObj = h.obj(); /* Build failed */
}
Obj mObj;
};
}}
|
Modified by Akino Penguin.
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