blob: 1dfe34bd6b969a46fa19ad6330382d25bb4ded9e [file] [log] [blame]
/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include "jni.h"
#include "jvmti.h"
#include "android-base/logging.h"
#include "android-base/macros.h"
// Test infrastructure
#include "jvmti_helper.h"
#include "test_env.h"
namespace art {
namespace Test927JNITable {
// This test is equivalent to the jni_internal_test JNIEnvExtTableOverride.
static size_t gGlobalRefCount = 0;
static JNINativeInterface* gOriginalEnv = nullptr;
static jobject CountNewGlobalRef(JNIEnv* env, jobject o) {
++gGlobalRefCount;
return gOriginalEnv->NewGlobalRef(env, o);
}
static void DoDeleteGlobalRef(JNIEnv* env, jobject o) {
jclass thr = env->FindClass("java/lang/Thread");
CHECK(thr != nullptr);
if (env->IsInstanceOf(o, thr)) {
jvmtiThreadInfo jti;
// b/146170834: This could cause DCHECK failures.
CHECK_EQ(jvmti_env->GetThreadInfo(reinterpret_cast<jthread>(o), &jti), JVMTI_ERROR_NONE);
}
gOriginalEnv->DeleteGlobalRef(env, o);
}
extern "C" JNIEXPORT void JNICALL Java_art_Test928_doOtherThreadTest(JNIEnv* env, jclass klass) {
size_t start_other_thread_count = gGlobalRefCount;
// Make sure it still works even on another thread.
jobject global = env->NewGlobalRef(klass);
CHECK_EQ(start_other_thread_count + 1, gGlobalRefCount);
env->DeleteGlobalRef(global);
}
extern "C" JNIEXPORT void JNICALL Java_art_Test928_doJNITableTest(
JNIEnv* env, jclass klass) {
// Get the current table, as the delegate.
jvmtiError getorig_result = jvmti_env->GetJNIFunctionTable(&gOriginalEnv);
if (JvmtiErrorToException(env, jvmti_env, getorig_result)) {
return;
}
// Get the current table, as the override we'll install.
JNINativeInterface* env_override;
jvmtiError getoverride_result = jvmti_env->GetJNIFunctionTable(&env_override);
if (JvmtiErrorToException(env, jvmti_env, getoverride_result)) {
return;
}
env_override->NewGlobalRef = CountNewGlobalRef;
env_override->DeleteGlobalRef = DoDeleteGlobalRef;
gGlobalRefCount = 0;
// Install the override.
jvmtiError setoverride_result = jvmti_env->SetJNIFunctionTable(env_override);
if (JvmtiErrorToException(env, jvmti_env, setoverride_result)) {
return;
}
jobject global = env->NewGlobalRef(klass);
CHECK_EQ(1u, gGlobalRefCount);
env->DeleteGlobalRef(global);
// Try and create and destroy a thread.
env->CallStaticVoidMethod(klass, env->GetStaticMethodID(klass, "runThreadTest", "()V"));
// Make sure something got ref'd, in the other thread we make and then clear a global ref so that
// should at least be present.
CHECK_LT(1u, gGlobalRefCount);
// Install the "original." There is no real reset.
size_t final_global_ref_count = gGlobalRefCount;
jvmtiError setoverride2_result = jvmti_env->SetJNIFunctionTable(gOriginalEnv);
if (JvmtiErrorToException(env, jvmti_env, setoverride2_result)) {
return;
}
jobject global2 = env->NewGlobalRef(klass);
CHECK_EQ(final_global_ref_count, gGlobalRefCount);
env->DeleteGlobalRef(global2);
// Try to install null. Should return NULL_POINTER error.
jvmtiError setoverride3_result = jvmti_env->SetJNIFunctionTable(nullptr);
if (setoverride3_result != JVMTI_ERROR_NULL_POINTER) {
LOG(FATAL) << "Didn't receive NULL_POINTER";
}
jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(env_override));
}
} // namespace Test927JNITable
} // namespace art