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/*
* Copyright (c) 2003, 2018, Oracle and/or its affiliates. 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include <stdio.h>
#include <string.h>
#include "jvmti.h"
#include "agent_common.h"
#include "JVMTITools.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifndef JNI_ENV_ARG
#ifdef __cplusplus
#define JNI_ENV_ARG(x, y) y
#define JNI_ENV_PTR(x) x
#else
#define JNI_ENV_ARG(x,y) x, y
#define JNI_ENV_PTR(x) (*x)
#endif
#endif
#define PASSED 0
#define STATUS_FAILED 2
static jvmtiEnv *jvmti = NULL;
static jint result = PASSED;
static jboolean printdump = JNI_FALSE;
#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_isnative001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_isnative001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_isnative001(JavaVM *jvm, char *options, void *reserved) {
return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
jint res;
if (options != NULL && strcmp(options, "printdump") == 0) {
printdump = JNI_TRUE;
}
res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
JVMTI_VERSION_1_1);
if (res != JNI_OK || jvmti == NULL) {
printf("Wrong result of a valid call to GetEnv!\n");
return JNI_ERR;
}
return JNI_OK;
}
char const *jbooleanToString(jboolean flag) {
return ((flag == JNI_TRUE) ? "true" : "false");
}
void checkMeth(JNIEnv *env, jclass cl,
char *name, char *sig, int stat, jboolean flag) {
jvmtiError err;
jmethodID mid;
jboolean is_native;
if (stat) {
mid = JNI_ENV_PTR(env)->GetStaticMethodID(JNI_ENV_ARG(env, cl), name, sig);
} else {
mid = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, cl), name, sig);
}
if (mid == NULL) {
printf("Cannot find MethodID for \"%s%s\"\n", name, sig);
result = STATUS_FAILED;
return;
}
err = (*jvmti)->IsMethodNative(jvmti, mid, &is_native);
if (err != JVMTI_ERROR_NONE) {
printf("(IsMethodNative) unexpected error: %s (%d)\n",
TranslateError(err), err);
result = STATUS_FAILED;
}
if (printdump == JNI_TRUE) {
printf(">>> %s%s - %s\n", name, sig, jbooleanToString(is_native));
}
if (is_native != flag) {
printf("(%s%s) wrong is_native value: %s, expected: %s\n",
name, sig, jbooleanToString(is_native), jbooleanToString(flag));
result = STATUS_FAILED;
}
}
JNIEXPORT jint JNICALL
Java_nsk_jvmti_IsMethodNative_isnative001_check(JNIEnv *env, jclass cls) {
jclass clsId;
checkMeth(env, cls, "<init>", "()V", 0, JNI_FALSE);
checkMeth(env, cls, "run",
"([Ljava/lang/String;Ljava/io/PrintStream;)I", 1, JNI_FALSE);
checkMeth(env, cls, "meth_stat", "(ILjava/lang/String;)[F", 1, JNI_FALSE);
checkMeth(env, cls, "meth_1", "(CCC)C", 0, JNI_FALSE);
checkMeth(env, cls, "nmeth", "()V", 0, JNI_TRUE);
checkMeth(env, cls, "check", "()I", 1, JNI_TRUE);
clsId = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env,
"nsk/jvmti/IsMethodNative/isnative001$Inn"));
if (clsId == NULL) {
printf("Cannot find nsk.jvmti.IsMethodNative.isnative001$Inn class!\n");
return STATUS_FAILED;
}
checkMeth(env, clsId, "meth_inn", "(Ljava/lang/String;J)V", 0, JNI_FALSE);
return result;
}
#ifdef __cplusplus
}
#endif
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