libTestStringCriticalWithDedup.c

/*
 * Copyright (c) 2021, Red Hat, Inc. All rights reserved.
 * 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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#include <jni.h>
#include <string.h>
#include <stdint.h>

JNIEXPORT jlong JNICALL
Java_TestStringCriticalWithDedup_pin(JNIEnv *env, jclass unused, jstring s) {
  const jchar* a = (*env)->GetStringCritical(env, s, NULL);
  return (jlong)(uintptr_t)a;
}

JNIEXPORT void JNICALL
Java_TestStringCriticalWithDedup_unpin(JNIEnv *env, jclass unused, jstring s, jlong v) {
  jchar* a = (jchar*)(uintptr_t)v;
  (*env)->ReleaseStringCritical(env, s, a);
}