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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"
extern "C" {
#define JVMTI_ERROR_CHECK(str,res) if (res != JVMTI_ERROR_NONE) { printf(str); printf(" %d\n",res); return res; }
#define JVMTI_ERROR_CHECK_EXPECTED_ERROR(str,res,err) if (res != err) { printf(str); printf("unexpected error %d\n",res); return res; }
#define JVMTI_ERROR_CHECK_VOID(str,res) if (res != JVMTI_ERROR_NONE) { printf(str); printf(" %d\n",res); iGlobalStatus = 2; }
#define JVMTI_ERROR_CHECK_EXPECTED_ERROR_VOID(str,res,err) if (res != err) { printf(str); printf(" unexpected error %d\n",res); iGlobalStatus = 2; }
jvmtiEnv *jvmti;
jint iGlobalStatus = 0;
static jvmtiCapabilities jvmti_caps;
static jvmtiEventCallbacks callbacks;
int printdump = 0;
void debug_printf(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
if (printdump) {
vprintf(fmt, args);
}
va_end(args);
}
void JNICALL vmInit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread) {
jvmtiError res;
debug_printf("VMInit event received\n");
res = jvmti_env->DisposeEnvironment();
JVMTI_ERROR_CHECK_VOID("DisposeEnvironment returned error", res);
}
void init_callbacks() {
callbacks.VMInit = vmInit;
}
#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_JvmtiTest(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_JvmtiTest(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_JvmtiTest(JavaVM *jvm, char *options, void *reserved) {
return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM * jvm, char *options, void *reserved) {
jint res;
jint count;
char **properties;
int i;
if (options && strlen(options) > 0) {
if (strstr(options, "printdump")) {
printdump = 1;
}
}
res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
if (res < 0) {
printf("Wrong result of a valid call to GetEnv!\n");
return JNI_ERR;
}
/* Enable event call backs. */
init_callbacks();
res = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));
JVMTI_ERROR_CHECK("SetEventCallbacks returned error", res);
/* Add capabilities */
res = jvmti->GetPotentialCapabilities(&jvmti_caps);
JVMTI_ERROR_CHECK("GetPotentialCapabilities returned error", res);
res = jvmti->AddCapabilities(&jvmti_caps);
JVMTI_ERROR_CHECK("GetAddCapabilities returned error", res);
res = jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_VM_INIT, nullptr);
JVMTI_ERROR_CHECK("SetEventNotificationMode for VM_INIT returned error", res);
res = jvmti->GetSystemProperties(&count, &properties);
JVMTI_ERROR_CHECK("GetSystemProperties returned error", res);
for (i=0; i< count; i++) {
char *value;
res = jvmti->GetSystemProperty((const char *) properties[i], &value);
JVMTI_ERROR_CHECK("GetSystemProperty returned error", res);
debug_printf(" %s %s \n", properties[i], value);
res = jvmti->SetSystemProperty((const char *) properties[i], value);
debug_printf("SetSystemProperty returned error %d\n", res);
}
return JNI_OK;
}
JNIEXPORT jint JNICALL
Java_nsk_jvmti_unit_functions_Dispose_JvmtiTest_GetResult(JNIEnv * env, jclass cls) {
return iGlobalStatus;
}
}
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