Add gc threshold values

Author: qunaibit

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/GcModuleBuiltins.java

@@ -57,7 +57,7 @@
 import com.oracle.graal.python.nodes.call.special.CallBinaryMethodNode;
 import com.oracle.graal.python.nodes.function.PythonBuiltinBaseNode;
 import com.oracle.graal.python.nodes.function.PythonBuiltinNode;
-import com.oracle.graal.python.nodes.function.builtins.PythonClinicBuiltinNode;
+import com.oracle.graal.python.nodes.function.builtins.PythonBinaryClinicBuiltinNode;
 import com.oracle.graal.python.nodes.function.builtins.PythonUnaryClinicBuiltinNode;
 import com.oracle.graal.python.nodes.function.builtins.clinic.ArgumentClinicProvider;
 import com.oracle.graal.python.runtime.GilNode;
@@ -112,7 +112,7 @@ public void initialize(Python3Core core) {
     @Builtin(name = "collect", parameterNames = {"$self", "generation"}, declaresExplicitSelf = true)
     @ArgumentClinic(name = "generation", conversion = ClinicConversion.Int, defaultValue = "2")
     @GenerateNodeFactory
-    abstract static class GcCollectNode extends PythonClinicBuiltinNode {
+    abstract static class GcCollectNode extends PythonBinaryClinicBuiltinNode {
         private static final NativeCAPISymbol SYMBOL = NativeCAPISymbol.FUN_GRAALPY_GC_COLLECT;
         private static final CApiTiming C_API_TIMING = CApiTiming.create(true, SYMBOL.getName());
 

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/capi/CApiContext.java

@@ -499,9 +499,14 @@ private boolean verifyNativeSmallInts() {
     public Object createGCState() {
         CompilerAsserts.neverPartOfCompilation();
         assert gcState == null;
+        PythonContext.GCState state = getContext().getGcState();
         Object ptr = CStructAccess.AllocateNode.allocUncached(CStructs.GCState);
-        CStructAccess.WriteIntNode.writeUncached(ptr, CFields.GCState__enabled, PInt.intValue(getContext().getGcState().isEnabled()));
-        CStructAccess.WriteIntNode.writeUncached(ptr, CFields.GCState__debug, getContext().getGcState().getDebug());
+        CStructAccess.WriteIntNode.writeUncached(ptr, CFields.GCState__enabled, PInt.intValue(state.isEnabled()));
+        CStructAccess.WriteIntNode.writeUncached(ptr, CFields.GCState__debug, state.getDebug());
+        Object generations = CStructAccess.GetElementPtrNode.getUncached().getElementPtr(ptr, CFields.GCState__generations);
+        for (int i = 0; i < state.getThresholds().length; i++) {
+            CStructAccess.WriteIntNode.getUncached().writeStructArrayElement(generations, i, CFields.GCGeneration__threshold, state.getThresholds()[i]);
+        }
         gcState = ptr;
         return gcState;
     }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/structs/CFields.java

@@ -347,6 +347,7 @@ public enum CFields {
     GCState__generation0(Pointer),
     GCState__collecting(Int),
 
+    GCGeneration__threshold(Int),
     GCGeneration__count(Int),
 
     PyGC_Head___gc_prev(UINTPTR_T),

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/runtime/PythonContext.java

@@ -278,6 +278,12 @@ public static final class GCState {
         private boolean enabled = true;
         private int debug;
 
+        private int[] thresholds = {
+                        700, // { .threshold = 700, },
+                        10, // { .threshold = 10, },
+                        10, // { .threshold = 10, },
+        };
+
         public boolean isEnabled() {
             return enabled;
         }
@@ -293,6 +299,10 @@ public int getDebug() {
         public void setDebug(int debug) {
             this.debug = debug;
         }
+
+        public int[] getThresholds() {
+            return thresholds;
+        }
     }
 
     /**