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Classes and Instances 27

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This commit is contained in:
nazrin 2025-06-13 02:29:46 +00:00
parent 6d5dff6e3d
commit d9dc02b92f
13 changed files with 271 additions and 63 deletions
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61
src/clox/gc.d
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@ -12,6 +12,7 @@ import clox.value;
import clox.vm;
import clox.container.dynarray;
import clox.container.table;
import conf = clox.conf;
void collectGarbage(){
debug(disableGC)
@ -34,14 +35,23 @@ void collectGarbage(){
markRoots();
traceReferences();
vm.strings.removeWhite();
auto sweepStats = sweep();
debug(logGC)
printf(colour!(" -- GC end %zu/%zu\n", Colour.Yellow).ptr, sweepStats.collected, sweepStats.total);
debug(memTrace){
import clox.memorydbg : totalGCScanned, totalGCollected, totalGCollections;
auto sweepStats = sweep();
totalGCollections++;
totalGCollected += sweepStats.collected;
totalGCScanned += sweepStats.total;
debug(logGC)
printf(colour!(" -- GC end %zu/%zu\n", Colour.Yellow).ptr, sweepStats.collected, sweepStats.total);
} else {
sweep();
}
debug(stressGC) {} else {
vm.nextGC = cast(size_t)(vm.bytesAllocated * 2);
vm.nextGC = conf.nextGCGrowthFunc(vm.bytesAllocated);
}
}
void mark(Obj* object){
void mark(O)(O* o) if(is(O == Obj) || __traits(hasMember, O, "obj")){
Obj* object = cast(Obj*)o;
if(object is null || object.isMarked)
return;
debug(logGC)
@ -53,14 +63,14 @@ void mark(Value value){
if(value.isType(Value.Type.Obj))
mark(value.asObj);
}
void mark(Table!(Obj.String*, Value) table){
foreach(entry; table.pool){
mark(cast(Obj*)entry.key);
void mark(K, V)(ref Table!(K, V) table){
foreach(ref entry; table.pool){
mark(entry.key);
mark(entry.val);
}
}
void mark(T)(DynArray!T darray){
foreach(item; darray[]){
void mark(T)(ref DynArray!T darray){
foreach(ref item; darray[]){
mark(item);
}
}
@ -69,10 +79,10 @@ private void markRoots(){
mark(*slot);
}
foreach(frame; vm.frames[0 .. vm.frameCount]){
mark(cast(Obj*)frame.closure);
mark(frame.closure);
}
for(Obj.Upvalue* upvalue = vm.openUpvalues; upvalue !is null; upvalue = upvalue.next){
mark(cast(Obj*)upvalue);
mark(upvalue);
}
mark(vm.globals);
markCompilerRoots();
@ -89,14 +99,23 @@ private void blacken(Obj* object){
break;
case Obj.Type.Function:
Obj.Function* func = object.asFunc;
mark(cast(Obj*)func.name);
mark(func.name);
mark(func.chunk.constants);
break;
case Obj.Type.Closure:
Obj.Closure* closure = object.asClosure;
mark(cast(Obj*)closure.func);
mark(closure.func);
foreach(upvalue; closure.upvalues)
mark(cast(Obj*)upvalue);
mark(upvalue);
break;
case Obj.Type.Class:
Obj.Class* cls = object.asClass;
mark(cls.name);
break;
case Obj.Type.Instance:
Obj.Instance* ins = object.asInstance;
mark(ins.cls);
mark(ins.fields);
break;
case Obj.Type.None: assert(0);
}
@ -108,11 +127,13 @@ private void traceReferences(){
}
}
private auto sweep(){
size_t nCollected, total;
debug(memTrace)
size_t nCollected, total;
Obj* previous = null;
Obj* object = vm.objects;
while(object !is null){
total++;
debug(memTrace)
total++;
if(object.isMarked){
object.isMarked = false;
previous = object;
@ -126,9 +147,11 @@ private auto sweep(){
vm.objects = object;
}
freeObject(unreached);
nCollected++;
debug(memTrace)
nCollected++;
}
}
return tuple!("collected", "total")(nCollected, total);
debug(memTrace)
return tuple!("collected", "total")(nCollected, total);
}