116 lines
4.1 KiB
C++
116 lines
4.1 KiB
C++
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/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "android-base/macros.h"
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#include "jni.h"
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#include "jvmti.h"
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#include "jvmti_helper.h"
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#include "test_env.h"
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namespace art {
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namespace Test2243SingleStepDefault {
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jmethodID interface_default_method;
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static void singleStepCB(jvmtiEnv* jvmti,
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JNIEnv* env,
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jthread thr,
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jmethodID method,
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jlocation location ATTRIBUTE_UNUSED) {
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// We haven't reached the default method yet. Continue single stepping
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if (method != interface_default_method) {
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return;
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}
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// Disable single stepping
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jvmtiError err = jvmti_env->SetEventNotificationMode(JVMTI_DISABLE, JVMTI_EVENT_SINGLE_STEP, thr);
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if (JvmtiErrorToException(env, jvmti_env, err)) {
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return;
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}
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// Inspect the frame.
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jint frame_count;
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if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetFrameCount(thr, &frame_count))) {
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return;
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}
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CHECK_GT(frame_count, 0);
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// Check that the method id from the stack frame is same as the one returned
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// by single step callback
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jmethodID m = nullptr;
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jlong loc = -1;
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if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetFrameLocation(thr, 0, &m, &loc))) {
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return;
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}
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CHECK_EQ(m, method) << "Method id from stack walk doesn't match id from single step callback";
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// Check that the method id is also present in the declaring class
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jclass klass = nullptr;
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if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetMethodDeclaringClass(m, &klass))) {
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return;
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}
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jint count = 0;
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jmethodID* methods = nullptr;
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jvmtiError result = jvmti_env->GetClassMethods(klass, &count, &methods);
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if (JvmtiErrorToException(env, jvmti_env, result)) {
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return;
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}
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bool found_method_id = false;
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for (int i = 0; i < count; i++) {
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if (methods[i] == method) {
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found_method_id = true;
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break;
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}
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}
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CHECK(found_method_id) << "Couldn't find the method id in the declaring class";
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// Check it isn't copied method.
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jint access_flags = 0;
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if (JvmtiErrorToException(env, jvmti, jvmti->GetMethodModifiers(m, &access_flags))) {
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return;
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}
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static constexpr uint32_t kAccCopied = 0x01000000;
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static constexpr uint32_t kAccIntrinsic = 0x80000000;
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bool is_copied = ((access_flags & (kAccIntrinsic | kAccCopied)) == kAccCopied);
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CHECK(!is_copied) << "Got copied methodID. Missed canonicalizing?\n";
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}
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extern "C" JNIEXPORT void JNICALL Java_art_Test2243_setSingleStepCallback(JNIEnv* env) {
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jvmtiEventCallbacks callbacks;
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memset(&callbacks, 0, sizeof(jvmtiEventCallbacks));
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callbacks.SingleStep = singleStepCB;
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jvmtiError ret = jvmti_env->SetEventCallbacks(&callbacks, sizeof(callbacks));
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JvmtiErrorToException(env, jvmti_env, ret);
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}
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extern "C" JNIEXPORT void JNICALL Java_art_Test2243_enableSingleStep(JNIEnv* env,
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jclass ATTRIBUTE_UNUSED,
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jthread thr) {
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jvmtiError err = jvmti_env->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_SINGLE_STEP, thr);
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JvmtiErrorToException(env, jvmti_env, err);
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}
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extern "C" JNIEXPORT void JNICALL Java_art_Test2243_setSingleStepUntil(JNIEnv* env,
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jclass cl ATTRIBUTE_UNUSED,
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jobject method) {
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interface_default_method = env->FromReflectedMethod(method);
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}
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} // namespace Test2243SingleStepDefault
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} // namespace art
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