| /* |
| * 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 |
| #define JNI_EARG(x) |
| #else |
| #define JNI_ENV_ARG(x,y) x, y |
| #define JNI_ENV_PTR(x) (*x) |
| #define JNI_EARG(x) x |
| #endif |
| |
| #endif |
| |
| #ifndef JNI_EARG |
| |
| #ifdef __cplusplus |
| #define JNI_EARG(x) |
| #else |
| #define JNI_EARG(x) x |
| #endif |
| |
| #endif |
| |
| #define PASSED 0 |
| #define STATUS_FAILED 2 |
| |
| static jvmtiEnv *jvmti; |
| static jvmtiCapabilities caps; |
| static jvmtiEventCallbacks callbacks; |
| static jint result = PASSED; |
| static jboolean printdump = JNI_FALSE; |
| static jmethodID mid1, mid2, mid3, mid4; |
| static jfloat fval; |
| static jdouble dval; |
| |
| void check1(jvmtiEnv *jvmti_env, jthread thr, jint depth, |
| jvmtiLocalVariableEntry *table, jint count) { |
| jvmtiError err; |
| jlong l = 0; |
| jfloat f = 0.0; |
| jdouble d = 0.0; |
| int i; |
| |
| for (i = 0; i < count; i++) { |
| if (strcmp(table[i].name, "l") == 0) { |
| err = (*jvmti_env)->GetLocalLong(jvmti_env, thr, depth, table[i].slot, &l); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalLong#1) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "f") == 0) { |
| err = (*jvmti_env)->GetLocalFloat(jvmti_env, thr, depth, table[i].slot, &f); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalFloat#1) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "d") == 0) { |
| err = (*jvmti_env)->GetLocalDouble(jvmti_env, thr, depth, table[i].slot, &d); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalDouble#1) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| } |
| if ((l != 22) || (f != 6.0) || (d != 7.0)) { |
| result = STATUS_FAILED; |
| printf("One of values retrieved by GetLocal is wrong (hook):\n"); |
| printf(" actual: long = 0x%08x%08x, float = %f, double = %f\n", |
| (jint)(l >> 32), (jint)l, f, d); |
| printf(" expected: long = 0x%08x%08x, float = %f, double = %f\n", |
| (jint)0, (jint)22, (double)6.0, (double)7.0); |
| } |
| } |
| |
| void check2(jvmtiEnv *jvmti_env, jthread thr, jint depth, |
| jvmtiLocalVariableEntry *table, jint count) { |
| jvmtiError err; |
| jint i1 = 0, i2 = 0, i3 = 0, i4 = 0, i5 = JNI_FALSE; |
| int i; |
| |
| for (i = 0; i < count; i++) { |
| if (strcmp(table[i].name, "i1") == 0) { |
| err = (*jvmti_env)->GetLocalInt(jvmti_env, thr, depth, table[i].slot, &i1); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalInt#2i1) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "i2") == 0) { |
| err = (*jvmti_env)->GetLocalInt(jvmti_env, thr, depth, table[i].slot, &i2); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalInt#2i2) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "i3") == 0) { |
| err = (*jvmti_env)->GetLocalInt(jvmti_env, thr, depth, table[i].slot, &i3); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalInt#2i3) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "i4") == 0) { |
| err = (*jvmti_env)->GetLocalInt(jvmti_env, thr, depth, table[i].slot, &i4); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalInt#2i4) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "i5") == 0) { |
| err = (*jvmti_env)->GetLocalInt(jvmti_env, thr, depth, table[i].slot, &i5); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalInt#2i5) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| } |
| if ((i1 != 1) || (i2 != 1) || (i3 != 1) || (i4 != 1) || (i5 != JNI_TRUE)) { |
| result = STATUS_FAILED; |
| printf("One of values retrieved by GetLocal is wrong (locals):\n"); |
| printf(" actual: int=%d, short=%d, char=%d, byte=%d, boolean=%d\n", |
| i1, i2, i3, i4, i5); |
| printf(" expected: int=%d, short=%d, char=%d, byte=%d, boolean=%d\n", |
| 1, 1, 1, 1, JNI_TRUE); |
| } |
| } |
| |
| void check3(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr, jint depth, |
| jvmtiLocalVariableEntry *table, jint count, jmethodID mid) { |
| jvmtiError err; |
| jobject ob1 = NULL, ob2 = NULL; |
| jclass cls; |
| jfieldID fid; |
| jint fldVal = 0; |
| jint arr[10]; |
| int i; |
| |
| for (i = 0; i < count; i++) { |
| if (strcmp(table[i].name, "ob1") == 0) { |
| err = (*jvmti_env)->GetLocalObject(jvmti_env, thr, depth, |
| table[i].slot, &ob1); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalObject#1) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| continue; |
| } |
| err = (*jvmti_env)->GetMethodDeclaringClass(jvmti_env, mid, &cls); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodDeclaringClass) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| continue; |
| } |
| fid = JNI_ENV_PTR(env)->GetFieldID(JNI_ENV_ARG(env, cls), |
| "fld", "I"); |
| if (fid == NULL) { |
| printf("Cannot find ID for \"fld\" field of meth03\n"); |
| JNI_ENV_PTR(env)->ExceptionClear(JNI_EARG(env)); |
| result = STATUS_FAILED; |
| continue; |
| } |
| fldVal = JNI_ENV_PTR(env)->GetIntField(JNI_ENV_ARG(env, ob1), fid); |
| } else if (strcmp(table[i].name, "ob2") == 0) { |
| err = (*jvmti_env)->GetLocalObject(jvmti_env, thr, depth, |
| table[i].slot, &ob2); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalObject#2) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| JNI_ENV_PTR(env)->GetIntArrayRegion(JNI_ENV_ARG(env, ob2), |
| 0, 10, arr); |
| } |
| } |
| if ((fldVal != 17) || (arr[2] != 8)) { |
| result = STATUS_FAILED; |
| printf("One of objects retrieved by GetLocal contains wrong value:\n"); |
| printf(" actual: fldVal = %d, int.arr[2] = %d\n", fldVal, arr[2]); |
| printf(" expected: fldVal = %d, int.arr[2] = %d\n", 17, 8); |
| } |
| } |
| |
| void check4(jvmtiEnv *jvmti_env, jthread thr, jint depth, |
| jvmtiLocalVariableEntry *table, jint count) { |
| jvmtiError err; |
| jint i1 = 0, i2 = 0, i3 = 0, i4 = 0, b = JNI_FALSE; |
| jlong l, lval = -100; |
| jfloat f = 0.0; |
| jdouble d = 0.0; |
| int i; |
| |
| for (i = 0; i < count; i++) { |
| if (strcmp(table[i].name, "i1") == 0) { |
| err = (*jvmti_env)->GetLocalInt(jvmti_env, thr, depth, table[i].slot, &i1); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalInt#4i1) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "i2") == 0) { |
| err = (*jvmti_env)->GetLocalInt(jvmti_env, thr, depth, table[i].slot, &i2); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalInt#4i2) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "i3") == 0) { |
| err = (*jvmti_env)->GetLocalInt(jvmti_env, thr, depth, table[i].slot, &i3); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalInt#4i3) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "i4") == 0) { |
| err = (*jvmti_env)->GetLocalInt(jvmti_env, thr, depth, table[i].slot, &i4); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalInt#4i4) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "b") == 0) { |
| err = (*jvmti_env)->GetLocalInt(jvmti_env, thr, depth, table[i].slot, &b); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalInt#4b) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "l") == 0) { |
| err = (*jvmti_env)->GetLocalLong(jvmti_env, thr, depth, table[i].slot, &l); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalLong#4) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "f") == 0) { |
| err = (*jvmti_env)->GetLocalFloat(jvmti_env, thr, depth, table[i].slot, &f); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalFloat#4) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else if (strcmp(table[i].name, "d") == 0) { |
| err = (*jvmti_env)->GetLocalDouble(jvmti_env, thr, depth, table[i].slot, &d); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalDouble#4) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| } |
| if ((i1 != 1) || (i2 != 2) || (i3 != 3) || (i4 != 4) || (b != JNI_TRUE) || |
| (l != lval) || (f != fval) || (d != dval)) { |
| result = STATUS_FAILED; |
| printf("One of values retrieved by GetLocal is wrong (params):\n"); |
| printf(" actual: int=%d, short=%d, char=%d, byte=%d, boolean=%d\n", |
| i1, i2, i3, i4, b); |
| printf(" long = 0x%08x%08x, float = %f, double = %f\n", |
| (jint)(l >> 32), (jint)l, f, d); |
| printf(" expected: int=%d, short=%d, char=%d, byte=%d, boolean=%d\n", |
| 1, 2, 3, 4, JNI_TRUE); |
| printf(" long = 0x%08x%08x, float = %f, double = %f\n", |
| (jint)(lval >> 32), (jint)lval, fval, dval); |
| } |
| } |
| |
| void JNICALL MethodExit(jvmtiEnv *jvmti_env, JNIEnv *env, |
| jthread thr, jmethodID mid, |
| jboolean was_poped_by_exception, jvalue return_value) { |
| jvmtiError err; |
| jvmtiLocalVariableEntry *table = NULL; |
| jint entryCount = 0; |
| int i; |
| |
| if (mid == mid1 || mid == mid2 || mid == mid3 || mid == mid4) { |
| err = (*jvmti_env)->GetLocalVariableTable(jvmti_env, mid, |
| &entryCount, &table); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalVariableTable#1) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| if (mid == mid1) { |
| if (printdump == JNI_TRUE) { |
| printf(">>> exit: meth01\n"); |
| } |
| check1(jvmti_env, thr, 0, table, entryCount); |
| } else if (mid == mid2) { |
| if (printdump == JNI_TRUE) { |
| printf(">>> exit: meth02\n"); |
| } |
| check2(jvmti_env, thr, 0, table, entryCount); |
| mid2 = NULL; |
| } else if (mid == mid3) { |
| if (printdump == JNI_TRUE) { |
| printf(">>> exit: meth03\n"); |
| } |
| check3(jvmti_env, (JNIEnv *)env, thr, 0, table, entryCount, mid); |
| } else if (mid == mid4) { |
| if (printdump == JNI_TRUE) { |
| printf(">>> exit: meth04\n"); |
| } |
| check4(jvmti_env, thr, 0, table, entryCount); |
| } |
| } |
| if (table != NULL) { |
| for (i = 0; i < entryCount; i++) { |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char*)table[i].name); |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char*)table[i].signature); |
| } |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char*)table); |
| } |
| } |
| |
| void JNICALL Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env, |
| jthread thr, jmethodID method, jlocation location) { |
| jvmtiError err; |
| jvmtiLocalVariableEntry *table = NULL; |
| jint entryCount = 0; |
| jmethodID mid; |
| jlocation loc; |
| 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; |
| } |
| err = (*jvmti_env)->GetLocalVariableTable(jvmti_env, mid, &entryCount, &table); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalVariableTable#2) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| if (mid == mid1) { |
| if (printdump == JNI_TRUE) { |
| printf(">>> bp: meth01\n"); |
| } |
| check1(jvmti_env, thr, 1, table, entryCount); |
| } else if (mid == mid2) { |
| if (printdump == JNI_TRUE) { |
| printf(">>> bp: meth02\n"); |
| } |
| check2(jvmti_env, thr, 1, table, entryCount); |
| } else if (mid == mid3) { |
| if (printdump == JNI_TRUE) { |
| printf(">>> bp: meth03\n"); |
| } |
| check3(jvmti_env, (JNIEnv *)env, thr, 1, table, entryCount, mid); |
| } else if (mid == mid4) { |
| if (printdump == JNI_TRUE) { |
| printf(">>> bp: meth04\n"); |
| } |
| check4(jvmti_env, thr, 1, table, entryCount); |
| } else { |
| printf("ERROR: didn't know where we got called from"); |
| result = STATUS_FAILED; |
| } |
| if (table != NULL) { |
| for (i = 0; i < entryCount; i++) { |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char*)table[i].name); |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char*)table[i].signature); |
| } |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char*)table); |
| } |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_getlocal001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_getlocal001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_getlocal001(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { |
| jint res; |
| jvmtiError err; |
| |
| 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 && |
| caps.can_generate_method_exit_events) { |
| callbacks.MethodExit = &MethodExit; |
| 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 or MethodExit event is not implemented\n"); |
| } |
| |
| return JNI_OK; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_GetLocalVariable_getlocal001_getMeth(JNIEnv *env, jclass cls, |
| jdouble d, jfloat f) { |
| jvmtiError err; |
| jmethodID mid; |
| |
| if (!caps.can_access_local_variables || |
| !caps.can_generate_breakpoint_events || |
| !caps.can_generate_method_exit_events) return; |
| |
| fval = f; |
| dval = d; |
| mid1 = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, cls), |
| "meth01", "()D"); |
| mid2 = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, cls), |
| "meth02", "(I)V"); |
| mid3 = JNI_ENV_PTR(env)->GetStaticMethodID(JNI_ENV_ARG(env, cls), |
| "meth03", "(Lnsk/jvmti/GetLocalVariable/getlocal001;)V"); |
| mid4 = JNI_ENV_PTR(env)->GetStaticMethodID(JNI_ENV_ARG(env, cls), |
| "meth04", "(IJSDCFBZ)V"); |
| mid = JNI_ENV_PTR(env)->GetStaticMethodID(JNI_ENV_ARG(env, cls), |
| "checkPoint", "()V"); |
| if (mid == 0 || mid1 == 0 || mid2 == 0 || mid3 == 0 || mid4 == 0) { |
| printf("Cannot find Method ID for a method\n"); |
| JNI_ENV_PTR(env)->ExceptionDescribe(JNI_EARG(env)); |
| JNI_ENV_PTR(env)->ExceptionClear(JNI_EARG(env)); |
| result = STATUS_FAILED; |
| return; |
| } |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_METHOD_EXIT, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable METHOD_EXIT event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| err = (*jvmti)->SetBreakpoint(jvmti, mid, 0); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to SetBreakpoint: err = %d\n", 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_GetLocalVariable_getlocal001_getRes(JNIEnv *env, jclass cls) { |
| return result; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
