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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
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package com.oracle.svm.core;
import org.graalvm.compiler.word.Word;
import org.graalvm.nativeimage.Isolate;
import org.graalvm.nativeimage.c.type.WordPointer;
import org.graalvm.word.PointerBase;
import org.graalvm.word.WordFactory;
import com.oracle.svm.core.annotate.Uninterruptible;
import com.oracle.svm.core.c.CGlobalData;
import com.oracle.svm.core.c.CGlobalDataFactory;
import com.oracle.svm.core.c.NonmovableArrays;
import com.oracle.svm.core.c.function.CEntryPointCreateIsolateParameters;
import com.oracle.svm.core.c.function.CEntryPointErrors;
import com.oracle.svm.core.c.function.CEntryPointSetup;
import com.oracle.svm.core.code.CodeInfoTable;
import com.oracle.svm.core.heap.Heap;
import com.oracle.svm.core.os.CommittedMemoryProvider;
public class Isolates {
public static final String IMAGE_HEAP_BEGIN_SYMBOL_NAME = "__svm_heap_begin";
public static final String IMAGE_HEAP_END_SYMBOL_NAME = "__svm_heap_end";
public static final String IMAGE_HEAP_RELOCATABLE_BEGIN_SYMBOL_NAME = "__svm_heap_relocatable_begin";
public static final String IMAGE_HEAP_RELOCATABLE_END_SYMBOL_NAME = "__svm_heap_relocatable_end";
public static final String IMAGE_HEAP_A_RELOCATABLE_POINTER_SYMBOL_NAME = "__svm_a_relocatable_pointer";
public static final String IMAGE_HEAP_WRITABLE_BEGIN_SYMBOL_NAME = "__svm_heap_writable_begin";
public static final String IMAGE_HEAP_WRITABLE_END_SYMBOL_NAME = "__svm_heap_writable_end";
public static final CGlobalData<Word> IMAGE_HEAP_BEGIN = CGlobalDataFactory.forSymbol(IMAGE_HEAP_BEGIN_SYMBOL_NAME);
public static final CGlobalData<Word> IMAGE_HEAP_END = CGlobalDataFactory.forSymbol(IMAGE_HEAP_END_SYMBOL_NAME);
public static final CGlobalData<Word> IMAGE_HEAP_RELOCATABLE_BEGIN = CGlobalDataFactory.forSymbol(IMAGE_HEAP_RELOCATABLE_BEGIN_SYMBOL_NAME);
public static final CGlobalData<Word> IMAGE_HEAP_RELOCATABLE_END = CGlobalDataFactory.forSymbol(IMAGE_HEAP_RELOCATABLE_END_SYMBOL_NAME);
public static final CGlobalData<Word> IMAGE_HEAP_A_RELOCATABLE_POINTER = CGlobalDataFactory.forSymbol(IMAGE_HEAP_A_RELOCATABLE_POINTER_SYMBOL_NAME);
public static final CGlobalData<Word> IMAGE_HEAP_WRITABLE_BEGIN = CGlobalDataFactory.forSymbol(IMAGE_HEAP_WRITABLE_BEGIN_SYMBOL_NAME);
public static final CGlobalData<Word> IMAGE_HEAP_WRITABLE_END = CGlobalDataFactory.forSymbol(IMAGE_HEAP_WRITABLE_END_SYMBOL_NAME);
@Uninterruptible(reason = "Thread state not yet set up.")
public static int checkSanity(Isolate isolate) {
if (SubstrateOptions.SpawnIsolates.getValue()) {
return isolate.isNull() ? CEntryPointErrors.NULL_ARGUMENT : CEntryPointErrors.NO_ERROR;
} else {
return isolate.equal(CEntryPointSetup.SINGLE_ISOLATE_SENTINEL) ? CEntryPointErrors.NO_ERROR : CEntryPointErrors.UNINITIALIZED_ISOLATE;
}
}
@Uninterruptible(reason = "Thread state not yet set up.")
public static int create(WordPointer isolatePointer, CEntryPointCreateIsolateParameters parameters) {
int result = CommittedMemoryProvider.get().initialize(isolatePointer, parameters);
if (result != CEntryPointErrors.NO_ERROR) {
return result;
}
result = checkSanity(isolatePointer.read());
if (result != CEntryPointErrors.NO_ERROR) {
isolatePointer.write(WordFactory.nullPointer());
return result;
}
return CEntryPointErrors.NO_ERROR;
}
@Uninterruptible(reason = "Thread state not yet set up.", mayBeInlined = true)
public static PointerBase getHeapBase(Isolate isolate) {
if (!SubstrateOptions.SpawnIsolates.getValue()) {
return IMAGE_HEAP_BEGIN.get();
}
return isolate;
}
@Uninterruptible(reason = "Tear-down in progress.")
public static int tearDownCurrent() {
freeUnmanagedMemory();
Heap.getHeap().tearDown();
return CommittedMemoryProvider.get().tearDown();
}
@Uninterruptible(reason = "Called from uninterruptible code.", mayBeInlined = true)
private static void freeUnmanagedMemory() {
CodeInfoTable.tearDown();
NonmovableArrays.tearDown();
}
}