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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * 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).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package org.graalvm.compiler.hotspot.replacements;

import static org.graalvm.compiler.api.directives.GraalDirectives.SLOWPATH_PROBABILITY;
import static org.graalvm.compiler.api.directives.GraalDirectives.injectBranchProbability;
import static org.graalvm.compiler.hotspot.meta.HotSpotForeignCallDescriptor.Reexecutability.REEXECUTABLE;
import static org.graalvm.compiler.hotspot.meta.HotSpotForeignCallDescriptor.Transition.LEAF;
import static org.graalvm.compiler.hotspot.meta.HotSpotForeignCallsProviderImpl.NO_LOCATIONS;
import static org.graalvm.compiler.replacements.SnippetTemplate.DEFAULT_REPLACER;
import static org.graalvm.compiler.replacements.nodes.CStringConstant.cstring;

import org.graalvm.compiler.api.replacements.Snippet;
import org.graalvm.compiler.api.replacements.Snippet.ConstantParameter;
import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor;
import org.graalvm.compiler.debug.DebugHandlersFactory;
import org.graalvm.compiler.graph.Node.ConstantNodeParameter;
import org.graalvm.compiler.graph.Node.NodeIntrinsic;
import org.graalvm.compiler.hotspot.meta.HotSpotForeignCallDescriptor;
import org.graalvm.compiler.hotspot.meta.HotSpotProviders;
import org.graalvm.compiler.hotspot.nodes.StubForeignCallNode;
import org.graalvm.compiler.hotspot.nodes.StubStartNode;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.nodes.extended.ForeignCallNode;
import org.graalvm.compiler.nodes.spi.LoweringTool;
import org.graalvm.compiler.options.OptionValues;
import org.graalvm.compiler.replacements.SnippetTemplate.AbstractTemplates;
import org.graalvm.compiler.replacements.SnippetTemplate.Arguments;
import org.graalvm.compiler.replacements.SnippetTemplate.SnippetInfo;
import org.graalvm.compiler.replacements.Snippets;
import org.graalvm.compiler.replacements.nodes.AssertionNode;
import org.graalvm.compiler.word.Word;

import jdk.vm.ci.code.TargetDescription;

public class AssertionSnippets implements Snippets {

    
This call can only be used with true for the "vmError" parameter, so that it can be configured to be a leaf method.
/** * This call can only be used with true for the "vmError" parameter, so that it can be * configured to be a leaf method. */
public static final HotSpotForeignCallDescriptor ASSERTION_VM_MESSAGE_C = new HotSpotForeignCallDescriptor(LEAF, REEXECUTABLE, NO_LOCATIONS, "assertionVmMessageC", void.class, boolean.class, Word.class, long.class, long.class, long.class); @Snippet public static void assertion(boolean condition, @ConstantParameter String message, long l1, long l2) { if (injectBranchProbability(SLOWPATH_PROBABILITY, !condition)) { vmMessageC(ASSERTION_VM_MESSAGE_C, true, cstring(message), l1, l2, 0L); } } @Snippet public static void stubAssertion(boolean condition, @ConstantParameter String message, long l1, long l2) { if (injectBranchProbability(SLOWPATH_PROBABILITY, !condition)) { vmMessageStub(ASSERTION_VM_MESSAGE_C, true, cstring(message), l1, l2, 0L); } } @NodeIntrinsic(ForeignCallNode.class) static native void vmMessageC(@ConstantNodeParameter ForeignCallDescriptor stubPrintfC, boolean vmError, Word format, long v1, long v2, long v3); @NodeIntrinsic(StubForeignCallNode.class) static native void vmMessageStub(@ConstantNodeParameter ForeignCallDescriptor stubPrintfC, boolean vmError, Word format, long v1, long v2, long v3); public static class Templates extends AbstractTemplates { private final SnippetInfo assertion = snippet(AssertionSnippets.class, "assertion"); private final SnippetInfo stubAssertion = snippet(AssertionSnippets.class, "stubAssertion"); public Templates(OptionValues options, Iterable<DebugHandlersFactory> factories, HotSpotProviders providers, TargetDescription target) { super(options, factories, providers, providers.getSnippetReflection(), target); } public void lower(AssertionNode assertionNode, LoweringTool tool) { StructuredGraph graph = assertionNode.graph(); Arguments args = new Arguments(graph.start() instanceof StubStartNode ? stubAssertion : assertion, graph.getGuardsStage(), tool.getLoweringStage()); args.add("condition", assertionNode.condition()); args.addConst("message", "failed runtime assertion in snippet/stub: " + assertionNode.message() + " (" + graph.method() + ")"); args.add("l1", assertionNode.getL1()); args.add("l2", assertionNode.getL2()); template(assertionNode, args).instantiate(providers.getMetaAccess(), assertionNode, DEFAULT_REPLACER, args); } } }