Java Infopoint类代码示例

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
/**
 * Parse an {@link Infopoint} generated by the compiler and create all needed binary section
 * constructs.
 *
 * @param methodInfo compiled method info
 * @param info info point being processed
 */
void process(CompiledMethodInfo methodInfo, Infopoint info) {
    switch (info.reason) {
        case CALL:
            // All calls in compiled code need a symbol and relocation entry.
            processCallInfoPoint(methodInfo, (Call) info);
            break;
        case SAFEPOINT:
        case IMPLICIT_EXCEPTION:
        case METHOD_START:
        case METHOD_END:
        case BYTECODE_POSITION:
            break;
        default:
            throw new InternalError("Unknown info point reason: " + info.reason);
    }
    if (info.debugInfo == null) {
        return;
    }
    BytecodePosition bcp = info.debugInfo.getBytecodePosition();
    if (bcp == null) {
        return;
    }
    recordScopeKlasses(methodInfo, bcp, info.debugInfo.getVirtualObjectMapping());
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
@Test
public void lineInfopoints() {
    final ResolvedJavaMethod method = getResolvedJavaMethod("testMethod");
    final StructuredGraph graph = parse(builder(method, AllowAssumptions.ifTrue(OptAssumptions.getValue(getInitialOptions()))), getDebugGraphBuilderSuite());
    int graphLineSPs = 0;
    for (FullInfopointNode ipn : graph.getNodes().filter(FullInfopointNode.class)) {
        if (ipn.getReason() == InfopointReason.BYTECODE_POSITION) {
            ++graphLineSPs;
        }
    }
    assertTrue(graphLineSPs > 0);
    PhaseSuite<HighTierContext> graphBuilderSuite = getCustomGraphBuilderSuite(GraphBuilderConfiguration.getDefault(getDefaultGraphBuilderPlugins()).withFullInfopoints(true));
    final CompilationResult cr = compileGraph(graph, graph.method(), getProviders(), getBackend(), graphBuilderSuite, OptimisticOptimizations.ALL, graph.getProfilingInfo(),
                    createSuites(graph.getOptions()), createLIRSuites(graph.getOptions()), new CompilationResult(graph.compilationId()), CompilationResultBuilderFactory.Default);
    int lineSPs = 0;
    for (Infopoint sp : cr.getInfopoints()) {
        assertNotNull(sp.reason);
        if (sp.reason == InfopointReason.BYTECODE_POSITION) {
            ++lineSPs;
        }
    }
    assertTrue(lineSPs > 0);
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
@Test
public void lineInfopoints() {
    final ResolvedJavaMethod method = getResolvedJavaMethod("testMethod");
    final StructuredGraph graph = parseDebug(method, AllowAssumptions.ifTrue(OptAssumptions.getValue(getInitialOptions())));
    int graphLineSPs = 0;
    for (FullInfopointNode ipn : graph.getNodes().filter(FullInfopointNode.class)) {
        if (ipn.getReason() == InfopointReason.BYTECODE_POSITION) {
            ++graphLineSPs;
        }
    }
    assertTrue(graphLineSPs > 0);
    PhaseSuite<HighTierContext> graphBuilderSuite = getCustomGraphBuilderSuite(GraphBuilderConfiguration.getDefault(getDefaultGraphBuilderPlugins()).withFullInfopoints(true));
    final CompilationResult cr = compileGraph(graph, graph.method(), getProviders(), getBackend(), graphBuilderSuite, OptimisticOptimizations.ALL, graph.getProfilingInfo(),
                    createSuites(graph.getOptions()), createLIRSuites(graph.getOptions()), new CompilationResult(), CompilationResultBuilderFactory.Default);
    int lineSPs = 0;
    for (Infopoint sp : cr.getInfopoints()) {
        assertNotNull(sp.reason);
        if (sp.reason == InfopointReason.BYTECODE_POSITION) {
            ++lineSPs;
        }
    }
    assertTrue(lineSPs > 0);
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
private static String disassemble(CodeCacheProvider codeCache, CompilationResult compResult, InstalledCode installedCode) {
    TargetDescription target = codeCache.getTarget();
    RegisterConfig regConfig = codeCache.getRegisterConfig();
    byte[] code = installedCode == null ? Arrays.copyOf(compResult.getTargetCode(), compResult.getTargetCodeSize()) : installedCode.getCode();
    if (code == null) {
        // Method was deoptimized/invalidated
        return "";
    }
    long start = installedCode == null ? 0L : installedCode.getStart();
    HexCodeFile hcf = new HexCodeFile(code, start, target.arch.getName(), target.wordSize * 8);
    if (compResult != null) {
        HexCodeFile.addAnnotations(hcf, compResult.getAnnotations());
        addExceptionHandlersComment(compResult, hcf);
        Register fp = regConfig.getFrameRegister();
        RefMapFormatter slotFormatter = new DefaultRefMapFormatter(target.wordSize, fp, 0);
        for (Infopoint infopoint : compResult.getInfopoints()) {
            if (infopoint instanceof Call) {
                Call call = (Call) infopoint;
                if (call.debugInfo != null) {
                    hcf.addComment(call.pcOffset + call.size, CodeUtil.append(new StringBuilder(100), call.debugInfo, slotFormatter).toString());
                }
                addOperandComment(hcf, call.pcOffset, "{" + codeCache.getTargetName(call) + "}");
            } else {
                if (infopoint.debugInfo != null) {
                    hcf.addComment(infopoint.pcOffset, CodeUtil.append(new StringBuilder(100), infopoint.debugInfo, slotFormatter).toString());
                }
                addOperandComment(hcf, infopoint.pcOffset, "{infopoint: " + infopoint.reason + "}");
            }
        }
        for (DataPatch site : compResult.getDataPatches()) {
            hcf.addOperandComment(site.pcOffset, "{" + site.reference.toString() + "}");
        }
        for (Mark mark : compResult.getMarks()) {
            hcf.addComment(mark.pcOffset, codeCache.getMarkName(mark));
        }
    }
    String hcfEmbeddedString = hcf.toEmbeddedString();
    return HexCodeFileDisTool.tryDisassemble(hcfEmbeddedString);
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
/**
 * @return the list of infopoints, sorted by {@link Site#pcOffset}
 */
public List<Infopoint> getInfopoints() {
    if (infopoints.isEmpty()) {
        return emptyList();
    }
    return unmodifiableList(infopoints);
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
@Test
public void callInfopoints() {
    final ResolvedJavaMethod method = getResolvedJavaMethod("testMethod");
    final StructuredGraph graph = parseEager(method, AllowAssumptions.YES);
    final CompilationResult cr = compileGraph(graph, graph.method(), getProviders(), getBackend(), getDefaultGraphBuilderSuite(), OptimisticOptimizations.ALL, graph.getProfilingInfo(),
                    createSuites(graph.getOptions()), createLIRSuites(graph.getOptions()), new CompilationResult(graph.compilationId()), CompilationResultBuilderFactory.Default);
    for (Infopoint sp : cr.getInfopoints()) {
        assertNotNull(sp.reason);
        if (sp instanceof Call) {
            assertDeepEquals(InfopointReason.CALL, sp.reason);
        }
    }
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
static int checkCollision(Infopoint i1, Infopoint i2) {
    int o1 = ord(i1);
    int o2 = ord(i2);
    if (o1 < 0 && o2 < 0) {
        throw new GraalError("Non optional infopoints cannot collide: %s and %s", i1, i2);
    }
    return o1 - o2;
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
@Override
public int compare(Site s1, Site s2) {
    if (s1.pcOffset == s2.pcOffset) {
        // Marks must come first since patching a call site
        // may need to know the mark denoting the call type
        // (see uses of CodeInstaller::_next_call_type).
        boolean s1IsMark = s1 instanceof Mark;
        boolean s2IsMark = s2 instanceof Mark;
        if (s1IsMark != s2IsMark) {
            return s1IsMark ? -1 : 1;
        }

        // Infopoints must group together so put them after
        // other Site types.
        boolean s1IsInfopoint = s1 instanceof Infopoint;
        boolean s2IsInfopoint = s2 instanceof Infopoint;
        if (s1IsInfopoint != s2IsInfopoint) {
            return s1IsInfopoint ? 1 : -1;
        }

        if (s1IsInfopoint) {
            sawCollidingInfopoints = true;
            return checkCollision((Infopoint) s1, (Infopoint) s2);
        }
    }
    return s1.pcOffset - s2.pcOffset;
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
@Test
public void callInfopoints() {
    final ResolvedJavaMethod method = getResolvedJavaMethod("testMethod");
    final StructuredGraph graph = parseEager(method, AllowAssumptions.YES);
    final CompilationResult cr = compileGraph(graph, graph.method(), getProviders(), getBackend(), getDefaultGraphBuilderSuite(), OptimisticOptimizations.ALL, graph.getProfilingInfo(),
                    createSuites(graph.getOptions()), createLIRSuites(graph.getOptions()), new CompilationResult(), CompilationResultBuilderFactory.Default);
    for (Infopoint sp : cr.getInfopoints()) {
        assertNotNull(sp.reason);
        if (sp instanceof Call) {
            assertDeepEquals(InfopointReason.CALL, sp.reason);
        }
    }
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
static int ord(Infopoint info) {
    return HOTSPOT_INFOPOINT_SORT_ORDER.get(info.reason);
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
@Test(expected = JVMCIError.class)
public void testInfopointMissingDebugInfo() {
    Infopoint info = new Infopoint(0, null, InfopointReason.METHOD_START);
    installEmptyCode(new Site[]{info}, new Assumption[0], new Comment[0], 16, new DataPatch[0], null);
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
@Test(expected = JVMCIError.class)
public void testSafepointMissingDebugInfo() {
    Infopoint info = new Infopoint(0, null, InfopointReason.SAFEPOINT);
    StackSlot deoptRescueSlot = StackSlot.get(null, 0, true);
    installEmptyCode(new Site[]{info}, new Assumption[0], new Comment[0], 16, new DataPatch[0], deoptRescueSlot);
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
private void test(VirtualObject[] vobj, JavaValue[] values, JavaKind[] slotKinds, int locals, int stack, int locks, StackSlot deoptRescueSlot) {
    BytecodeFrame frame = new BytecodeFrame(null, dummyMethod, 0, false, false, values, slotKinds, locals, stack, locks);
    DebugInfo info = new DebugInfo(frame, vobj);
    info.setReferenceMap(new HotSpotReferenceMap(new Location[0], new Location[0], new int[0], 8));
    installEmptyCode(new Site[]{new Infopoint(0, info, InfopointReason.SAFEPOINT)}, new Assumption[0], new Comment[0], 16, new DataPatch[0], deoptRescueSlot);
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
private void test(ReferenceMap refMap) {
    BytecodePosition pos = new BytecodePosition(null, dummyMethod, 0);
    DebugInfo info = new DebugInfo(pos);
    info.setReferenceMap(refMap);
    installEmptyCode(new Site[]{new Infopoint(0, info, InfopointReason.SAFEPOINT)}, new Assumption[0], new Comment[0], 16, new DataPatch[0], StackSlot.get(null, 0, true));
}
 

import jdk.vm.ci.code.site.Infopoint; //导入依赖的package包/类
protected void recordImplicitException(DebugInfo info) {
    sites.add(new Infopoint(code.position(), info, InfopointReason.IMPLICIT_EXCEPTION));
}