143 lines
4.5 KiB
C
143 lines
4.5 KiB
C
/*
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* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <jni.h>
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/*
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* Class: CallWithJNIWeak
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* Method: testJNIFieldAccessors
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* Signature: (LCallWithJNIWeak;)V
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*/
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JNIEXPORT void JNICALL
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Java_CallWithJNIWeak_testJNIFieldAccessors(JNIEnv *env, jclass clazz, jobject this) {
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// Make sure that we have a weak reference to the receiver
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jweak self = (*env)->NewWeakGlobalRef(env, this);
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jclass this_class = (*env)->GetObjectClass(env, self);
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jclass exception = (*env)->FindClass(env, "java/lang/RuntimeException");
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jfieldID id_i = (*env)->GetFieldID(env, this_class, "i", "I");
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jfieldID id_j = (*env)->GetFieldID(env, this_class, "j", "J");
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jfieldID id_z = (*env)->GetFieldID(env, this_class, "z", "Z");
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jfieldID id_c = (*env)->GetFieldID(env, this_class, "c", "C");
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jfieldID id_s = (*env)->GetFieldID(env, this_class, "s", "S");
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jfieldID id_f = (*env)->GetFieldID(env, this_class, "f", "F");
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jfieldID id_d = (*env)->GetFieldID(env, this_class, "d", "D");
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jfieldID id_l = (*env)->GetFieldID(env, this_class, "l", "Ljava/lang/Object;");
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jvalue v;
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#define CHECK(variable, expected) \
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do { \
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if ((variable) != (expected)) { \
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(*env)->ThrowNew(env, exception, #variable" != " #expected); \
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return; \
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} \
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} while(0)
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// The values checked below must be kept in sync with the Java source file.
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v.i = (*env)->GetIntField(env, self, id_i);
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CHECK(v.i, 1);
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v.j = (*env)->GetLongField(env, self, id_j);
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CHECK(v.j, 2);
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v.z = (*env)->GetBooleanField(env, self, id_z);
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CHECK(v.z, JNI_TRUE);
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v.c = (*env)->GetCharField(env, self, id_c);
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CHECK(v.c, 'a');
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v.s = (*env)->GetShortField(env, self, id_s);
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CHECK(v.s, 3);
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v.f = (*env)->GetFloatField(env, self, id_f);
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CHECK(v.f, 1.0f);
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v.d = (*env)->GetDoubleField(env, self, id_d);
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CHECK(v.d, 2.0);
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#undef CHECK
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v.l = (*env)->GetObjectField(env, self, id_l);
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if (v.l == NULL) {
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(*env)->ThrowNew(env, exception, "Object field was null");
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return;
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}
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{
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jclass clz = (*env)->GetObjectClass(env, v.l);
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if (!(*env)->IsSameObject(env, clazz, clz)) {
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(*env)->ThrowNew(env, exception, "Bad object class");
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}
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}
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(*env)->DeleteWeakGlobalRef(env, self);
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}
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/*
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* Class: CallWithJNIWeak
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* Method: runTests
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* Signature: (LCallWithJNIWeak;)V
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*/
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JNIEXPORT void JNICALL
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Java_CallWithJNIWeak_runTests(JNIEnv *env, jclass clazz, jobject this) {
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jweak that = (*env)->NewWeakGlobalRef(env, this);
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{
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jmethodID method = (*env)->GetStaticMethodID(env,
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clazz, "testJNIFieldAccessors", "(LCallWithJNIWeak;)V");
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(*env)->CallStaticVoidMethod(env, clazz, method, that);
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if ((*env)->ExceptionCheck(env)) {
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return;
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}
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}
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{
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jmethodID method = (*env)->GetMethodID(env, clazz, "weakReceiverTest", "()V");
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(*env)->CallVoidMethod(env, that, method);
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if ((*env)->ExceptionCheck(env)) {
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return;
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}
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}
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{
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jmethodID method = (*env)->GetMethodID(env, clazz, "synchonizedWeakReceiverTest", "()V");
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(*env)->CallVoidMethod(env, that, method);
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if ((*env)->ExceptionCheck(env)) {
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return;
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}
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}
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(*env)->DeleteWeakGlobalRef(env, that);
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}
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/*
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* Class: CallWithJNIWeak
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* Method: weakReceiverTest0
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* Signature: ()V
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*/
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JNIEXPORT void JNICALL
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Java_CallWithJNIWeak_weakReceiverTest0(JNIEnv *env, jobject obj) {
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(*env)->GetObjectClass(env, obj);
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}
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