| /* |
| * 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 |
| #define INV_SLOT (-1) |
| |
| static jvmtiEnv *jvmti = NULL; |
| static jvmtiCapabilities caps; |
| static jvmtiEventCallbacks callbacks; |
| static jint result = PASSED; |
| static jboolean printdump = JNI_FALSE; |
| |
| void JNICALL Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env, |
| jthread thr, jmethodID method, jlocation location) { |
| jvmtiError err; |
| jmethodID mid; |
| jlocation loc; |
| jint entryCount; |
| jvmtiLocalVariableEntry *table; |
| int i; |
| |
| err = (*jvmti_env)->GetFrameLocation(jvmti_env, thr, 1, &mid, &loc); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetFrameLocation) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> obtaining local variables mapping ...\n"); |
| } |
| |
| err = (*jvmti_env)->GetLocalVariableTable(jvmti_env, mid, &entryCount, &table); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalVariableTable) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> checking on invalid slot ...\n"); |
| } |
| for (i = 0; i < entryCount; i++) { |
| if (strcmp(table[i].name, "o") == 0) { |
| err = (*jvmti_env)->SetLocalObject(jvmti_env, thr, 1, |
| INV_SLOT, (jobject)thr); |
| if (err != JVMTI_ERROR_INVALID_SLOT) { |
| printf("(%s) ", table[i].name); |
| printf("Error expected: JVMTI_ERROR_INVALID_SLOT,\n"); |
| printf("\t actual: %s (%d)\n", TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "i") == 0) { |
| err = (*jvmti_env)->SetLocalInt(jvmti_env, thr, 1, |
| INV_SLOT, (jint)0); |
| if (err != JVMTI_ERROR_INVALID_SLOT) { |
| printf("(%s) ", table[i].name); |
| printf("Error expected: JVMTI_ERROR_INVALID_SLOT,\n"); |
| printf("\t actual: %s (%d)\n", TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "l") == 0) { |
| err = (*jvmti_env)->SetLocalLong(jvmti_env, thr, 1, |
| INV_SLOT, (jlong)0); |
| if (err != JVMTI_ERROR_INVALID_SLOT) { |
| printf("(%s) ", table[i].name); |
| printf("Error expected: JVMTI_ERROR_INVALID_SLOT,\n"); |
| printf("\t actual: %s (%d)\n", TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "f") == 0) { |
| err = (*jvmti_env)->SetLocalFloat(jvmti_env, thr, 1, |
| INV_SLOT, (jfloat)0); |
| if (err != JVMTI_ERROR_INVALID_SLOT) { |
| printf("(%s) ", table[i].name); |
| printf("Error expected: JVMTI_ERROR_INVALID_SLOT,\n"); |
| printf("\t actual: %s (%d)\n", TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "d") == 0) { |
| err = (*jvmti_env)->SetLocalDouble(jvmti_env, thr, 1, |
| INV_SLOT, (jdouble)0); |
| if (err != JVMTI_ERROR_INVALID_SLOT) { |
| printf("(%s) ", table[i].name); |
| printf("Error expected: JVMTI_ERROR_INVALID_SLOT,\n"); |
| printf("\t actual: %s (%d)\n", TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> ... done\n"); |
| } |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_setlocal003(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_setlocal003(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_setlocal003(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { |
| jvmtiError err; |
| 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; |
| } |
| |
| err = (*jvmti)->GetPotentialCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->AddCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(AddCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->GetCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| if (!caps.can_access_local_variables) { |
| printf("Warning: access to local variables is not implemented\n"); |
| } else if (caps.can_generate_breakpoint_events) { |
| callbacks.Breakpoint = &Breakpoint; |
| err = (*jvmti)->SetEventCallbacks(jvmti, &callbacks, sizeof(callbacks)); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(SetEventCallbacks) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| } else { |
| printf("Warning: Breakpoint event is not implemented\n"); |
| } |
| |
| return JNI_OK; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_SetLocalVariable_setlocal003_getReady(JNIEnv *env, jclass cls) { |
| jvmtiError err; |
| jmethodID mid; |
| |
| if (jvmti == NULL) { |
| printf("JVMTI client was not properly loaded!\n"); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| if (!caps.can_access_local_variables || |
| !caps.can_generate_breakpoint_events) return; |
| |
| mid = JNI_ENV_PTR(env)->GetStaticMethodID(JNI_ENV_ARG(env, cls), |
| "checkPoint", "()V"); |
| if (mid == NULL) { |
| printf("Cannot find Method ID for method checkPoint\n"); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| err = (*jvmti)->SetBreakpoint(jvmti, mid, 0); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to SetBreakpoint: %s (%d)\n", TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_BREAKPOINT, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable BREAKPOINT event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_SetLocalVariable_setlocal003_getRes(JNIEnv *env, jclass cls) { |
| return result; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
