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/*
* Copyright (c) 2003, 2024, 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.hpp"
#include "nsk_tools.hpp"
#include "JVMTITools.hpp"
#include "jvmti_tools.hpp"
extern "C" {
#define METH_NUM 3 /* overall number of methods */
#define STATUS_FAILED 2
#define PASSED 0
typedef struct { /* local variable info */
const char *v_name; /* a variable name */
const char *v_sign; /* JVM type signature */
const char *v_gen_sign; /* JVM type generic signature */
} localVar;
/* expected local variable info are below */
static localVar constr_lv[] = { /* constructor's local variables */
{ "this", "Lnsk/jvmti/GetLocalVariableTable/localtab005a;", "null" },
{ "constr_b", "Lnsk/jvmti/GetLocalVariableTable/localtab005b;",
"Lnsk/jvmti/GetLocalVariableTable/localtab005b<Ljava/lang/String;>;" },
{ "constr_i", "I", "null" },
{ "constr_c", "Lnsk/jvmti/GetLocalVariableTable/localtab005c;",
"Lnsk/jvmti/GetLocalVariableTable/localtab005c<Ljava/lang/Boolean;Ljava/lang/Integer;>;" },
{ "constr_f", "F", "null" },
{ "constr_ch", "C", "null" },
{ "constr_if", "Lnsk/jvmti/GetLocalVariableTable/localtab005if;",
"Lnsk/jvmti/GetLocalVariableTable/localtab005if<Ljava/lang/Object;>;" }
};
static localVar insMeth_lv[] = { /* finMethod()'s local variables */
{ "this", "Lnsk/jvmti/GetLocalVariableTable/localtab005a;", "null" },
{ "ins_c", "C", "null" },
{ "ins_i", "J", "null" },
{ "ltab005d", "Lnsk/jvmti/GetLocalVariableTable/localtab005d;",
"Lnsk/jvmti/GetLocalVariableTable/localtab005d<Ljava/lang/Object;>;" },
{ "ins_k", "J", "null" },
{ "ins_l", "J", "null" },
{ "ins_g", "Lnsk/jvmti/GetLocalVariableTable/localtab005g;",
"Lnsk/jvmti/GetLocalVariableTable/localtab005g<Lnsk/jvmti/GetLocalVariableTable/localtab005f;>;" }
};
static localVar statMeth_lv[] = { /* statMethod()'s local variables */
{ "stat_x", "I", "null" },
{ "stat_y", "I", "null" },
{ "stat_z", "I", "null" },
{ "stat_j", "D", "null" },
{ "stat_d", "Lnsk/jvmti/GetLocalVariableTable/localtab005d;",
"Lnsk/jvmti/GetLocalVariableTable/localtab005d<Ljava/lang/Byte;>;" }
};
typedef struct { /* local variables of a method */
int inst; /* type of a method: 0- static; 1- instance */
char *m_name; /* a method name */
char *m_sign; /* JVM signature of a method */
int vcount; /* overall number of local variables */
localVar *vars;
jmethodID mid; /* JNI's method ID */
} methodInfo;
/* list of tested methods */
static methodInfo methInfo[] = {
{ 1, (char*) "<init>", (char*) "()V", 7, constr_lv, nullptr },
{ 1, (char*) "insMethod", (char*) "(CJLnsk/jvmti/GetLocalVariableTable/localtab005d;J)V", 7, insMeth_lv, nullptr },
{ 0, (char*) "statMethod", (char*) "(III)D", 5, statMeth_lv, nullptr }
};
static jvmtiEnv *jvmti = nullptr;
static jvmtiCapabilities caps;
static int checkAttr(JNIEnv *jni_env, jclass testedCls) {
int i, j, k;
int totRes = PASSED;
jint count = -1;
jvmtiLocalVariableEntry *lv_table;
for (i=0; i<METH_NUM; i++) {
/* get the JNI method ID for a method with name m_name and
signature m_sign */
if (methInfo[i].inst) /* an instance method */
methInfo[i].mid = jni_env->GetMethodID(testedCls, methInfo[i].m_name, methInfo[i].m_sign);
else /* a static method */
methInfo[i].mid = jni_env->GetStaticMethodID(testedCls, methInfo[i].m_name, methInfo[i].m_sign);
if (methInfo[i].mid == nullptr) {
NSK_COMPLAIN3("TEST FAILURE: unable to get the method ID for the %s method \"%s\", signature \"%s\"\n\n",
methInfo[i].inst ? "instance" : "static",
methInfo[i].m_name, methInfo[i].m_sign);
return STATUS_FAILED;
}
/* get the LocalVariableTable attribute */
if (!NSK_JVMTI_VERIFY(jvmti->GetLocalVariableTable(methInfo[i].mid, &count, &lv_table))) {
NSK_COMPLAIN3("TEST FAILED: unable to get local variable table\n\tfor the %s method \"%s\", signature \"%s\"\n\n",
methInfo[i].inst ? "instance" : "static",
methInfo[i].m_name, methInfo[i].m_sign);
return STATUS_FAILED;
} else {
if (count != methInfo[i].vcount) {
totRes = STATUS_FAILED;
NSK_COMPLAIN5(
"TEST FAILED: %s method \"%s\", signature \"%s\" : "
"found %d vars in the LocalVariableTable, expected %d\n"
"\tHere are the found vars:\n",
methInfo[i].inst ? "instance" : "static",
methInfo[i].m_name, methInfo[i].m_sign,
count, methInfo[i].vcount);
for (j=0; j<count; j++)
NSK_COMPLAIN4("\t%d) name: \"%s\"\n\tsignature: \"%s\"\n\tgeneric signature: \"%s\"\n",
j+1, lv_table[j].name,
lv_table[j].signature,
(lv_table[j].generic_signature == nullptr) ? "null" : lv_table[j].generic_signature);
NSK_COMPLAIN0("\n");
continue;
}
else {
NSK_DISPLAY4(
">>> Checking vars in the LocalVariableTable of the %s method \"%s\","
"signature \"%s\" ...\n"
"\t%d local vars as expected\n",
methInfo[i].inst ? "instance" : "static",
methInfo[i].m_name, methInfo[i].m_sign, count);
}
for (j=0; j<count; j++) {
for (k=0; k<count; k++) {
if (strcmp(lv_table[j].name, methInfo[i].vars[k].v_name) == 0) {
if ((strcmp(lv_table[j].signature, methInfo[i].vars[k].v_sign) != 0) ||
(strcmp((lv_table[j].generic_signature == nullptr) ? "null" : lv_table[j].generic_signature,
methInfo[i].vars[k].v_gen_sign) != 0)) {
NSK_COMPLAIN8(
"TEST FAILED: %s method: \"%s\" \"%s\":\n"
"\tvar \"%s\" has signature \"%s\",\n"
"\tgeneric signature \"%s\"\n\n"
"\tExpected: \"%s\"\n\t\t\"%s\"\n\n",
methInfo[i].inst ? "instance" : "static",
methInfo[i].m_name, methInfo[i].m_sign,
lv_table[j].name, lv_table[j].signature,
(lv_table[j].generic_signature == nullptr) ? "null" : lv_table[j].generic_signature,
methInfo[i].vars[k].v_sign,
(methInfo[i].vars[k].v_gen_sign == nullptr) ? "null" : methInfo[i].vars[k].v_gen_sign);
totRes = STATUS_FAILED;
break;
}
else
NSK_DISPLAY3("CHECK PASSED: var: \"%s\",\n\tsignature: \"%s\",\n\tgeneric signature: \"%s\"\n",
lv_table[j].name,
lv_table[j].signature,
(lv_table[j].generic_signature == nullptr) ? "null" : lv_table[j].generic_signature);
}
}
}
NSK_DISPLAY0("Deallocating the local variable table entries\n");
if (!NSK_JVMTI_VERIFY(jvmti->Deallocate((unsigned char*) lv_table))) {
totRes = STATUS_FAILED;
}
NSK_DISPLAY0("<<<\n");
}
}
return totRes;
}
JNIEXPORT jint JNICALL
Java_nsk_jvmti_GetLocalVariableTable_localtab005_check(
JNIEnv *env, jobject obj, jobject testedObj) {
jclass testedCls = env->GetObjectClass(testedObj);
if (!caps.can_access_local_variables)
return PASSED;
return checkAttr(env, testedCls);
}
#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_localtab005(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_localtab005(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_localtab005(JavaVM *jvm, char *options, void *reserved) {
return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
/* init framework and parse options */
if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
return JNI_ERR;
/* create JVMTI environment */
if (!NSK_VERIFY((jvmti =
nsk_jvmti_createJVMTIEnv(jvm, reserved)) != nullptr))
return JNI_ERR;
/* add capability to access local variables */
memset(&caps, 0, sizeof(jvmtiCapabilities));
caps.can_access_local_variables = 1;
if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps)))
return JNI_ERR;
if (!NSK_JVMTI_VERIFY(jvmti->GetCapabilities(&caps)))
return JNI_ERR;
if (!caps.can_access_local_variables)
NSK_DISPLAY0("Warning: access to local variables is not implemented\n");
return JNI_OK;
}
}
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