| /* |
| * Copyright (c) 2007, 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 STATUS_FAILED 2 |
| #define PASSED 0 |
| |
| #define RETURN_FAILED errCode = STATUS_FAILED; fflush(0); return errCode |
| |
| static jvmtiEnv *jvmti = NULL; |
| static jvmtiCapabilities caps; |
| static jvmtiEventCallbacks callbacks; |
| |
| /* MethodExit and PopFrame events expected */ |
| static int meth_exit_exp_events = 0; |
| static int pop_frame_exp_events = 0; |
| |
| /* MethodExit and PopFrame events generated */ |
| static int meth_exit_gen_events = 0; |
| static int pop_frame_gen_events = 0; |
| |
| static int errCode = PASSED; |
| |
| static const char *sig_exp = "()J"; |
| static const char *name_exp = "activeMethod"; |
| static jmethodID midActiveMethod = NULL; |
| |
| void JNICALL |
| MethodExit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr, |
| jmethodID method, jboolean was_poped_by_exc, jvalue return_value) { |
| |
| if (method == midActiveMethod) { |
| printf("#### MethodExit event occurred ####\n"); |
| fflush(0); |
| meth_exit_gen_events++; |
| } |
| } |
| |
| void JNICALL |
| FramePop(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread, |
| jmethodID method, jboolean wasPopedByException) { |
| |
| if (method == midActiveMethod) { |
| printf("#### FramePop event occurred ####\n"); |
| fflush(0); |
| pop_frame_gen_events++; |
| } |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_unit_ForceEarlyReturn_earlyretbase_suspThread(JNIEnv *env, |
| jclass cls, jobject earlyretThr) { |
| jvmtiError err; |
| |
| if (!caps.can_force_early_return || !caps.can_suspend) { |
| return PASSED; |
| } |
| |
| printf(">>>>>>>> Invoke SuspendThread()\n"); |
| if ((err = ((*jvmti)->SuspendThread(jvmti, earlyretThr))) |
| != JVMTI_ERROR_NONE) { |
| printf("%s: Failed to call SuspendThread(): error=%d: %s\n", |
| __FILE__, err, TranslateError(err)); |
| return JNI_ERR; |
| } |
| printf("<<<<<<<< SuspendThread() is successfully done\n"); |
| fflush(0); |
| return PASSED; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_unit_ForceEarlyReturn_earlyretbase_resThread(JNIEnv *env, |
| jclass cls, jobject earlyretThr) { |
| jvmtiError err; |
| |
| if (!caps.can_force_early_return || !caps.can_suspend) { |
| return PASSED; |
| } |
| |
| printf(">>>>>>>> Invoke ResumeThread()\n"); |
| if ((err = ((*jvmti)->ResumeThread(jvmti, earlyretThr))) |
| != JVMTI_ERROR_NONE) { |
| printf("%s: Failed to call ResumeThread(): error=%d: %s\n", |
| __FILE__, err, TranslateError(err)); |
| return JNI_ERR; |
| } |
| printf("<<<<<<<< ResumeThread() is successfully done\n"); |
| fflush(0); |
| return PASSED; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_unit_ForceEarlyReturn_earlyretbase_doForceEarlyReturn(JNIEnv *env, |
| jclass cls, jclass targCls, jthread earlyretThr, jlong valToRet) { |
| jvmtiError err; |
| |
| if (!caps.can_force_early_return || !caps.can_suspend) { |
| return PASSED; |
| } |
| |
| /* Turn on the JVMTI MetodExit and PopFrame events to check |
| * that ForceEarlyReturn correctly generates them */ |
| |
| 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); |
| RETURN_FAILED; |
| } else { |
| meth_exit_exp_events++; |
| } |
| |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_FRAME_POP, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable FRAME_POP event: %s (%d)\n", |
| TranslateError(err), err); |
| RETURN_FAILED; |
| } |
| |
| err = (*jvmti)->NotifyFramePop(jvmti, earlyretThr, 0); |
| if (err == JVMTI_ERROR_MUST_POSSESS_CAPABILITY && |
| !caps.can_generate_frame_pop_events) { |
| /* Ok, it's expected */ |
| } else if (err != JVMTI_ERROR_NONE) { |
| printf("(NotifyFramePop) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| RETURN_FAILED; |
| } else { |
| pop_frame_exp_events++; |
| } |
| printf(">>>>>>>> Invoke ForceEarlyReturn()\n"); |
| |
| printf("Before call to GetMethodID(%s, %s)\n", name_exp, sig_exp); |
| midActiveMethod = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, targCls), |
| name_exp, sig_exp); |
| if (midActiveMethod == NULL) { |
| printf("Cannot find Method ID for method %s\n", name_exp); |
| RETURN_FAILED; |
| } |
| printf("After call to GetMethodID(%s, %s)\n", name_exp, sig_exp); |
| |
| if ((err = ((*jvmti)->ForceEarlyReturnLong(jvmti, earlyretThr, valToRet))) |
| != JVMTI_ERROR_NONE) { |
| printf("TEST FAILED: the function ForceEarlyReturn()" |
| " returned the error %d: %s\n", |
| err, TranslateError(err)); |
| printf("\tFor more info about this error see the JVMTI spec.\n"); |
| RETURN_FAILED; |
| } |
| printf("Check #1 PASSED: ForceEarlyReturn() is successfully done\n"); |
| fflush(0); |
| |
| return(errCode); |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_earlyretbase(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_earlyretbase(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_earlyretbase(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; |
| |
| res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti), |
| JVMTI_VERSION_1_1); |
| if (res != JNI_OK || jvmti == NULL) { |
| printf("Wrong error code from 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_force_early_return) { |
| printf("Warning: ForceEarlyReturn is not implemented\n"); |
| return JNI_OK; |
| } |
| |
| if (!caps.can_suspend) { |
| printf("Warning: suspend/resume is not implemented\n"); |
| return JNI_OK; |
| } |
| |
| if (caps.can_generate_frame_pop_events && caps.can_generate_method_exit_events) { |
| callbacks.MethodExit = &MethodExit; |
| callbacks.FramePop = &FramePop; |
| 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: FramePop or MethodExit event is not implemented\n"); |
| } |
| return JNI_OK; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_unit_ForceEarlyReturn_earlyretbase_check(JNIEnv *env, jclass cls) { |
| |
| printf("JVMTI PopFrame events: expected: %d, generated: %d\n", |
| meth_exit_exp_events, meth_exit_gen_events); |
| |
| printf("JVMTI MethodExit events: expected: %d, generated: %d\n", |
| pop_frame_exp_events, pop_frame_gen_events); |
| |
| /* Check if the JVMTI events were generated correctly by ForceEarlyReturn */ |
| if (meth_exit_exp_events != meth_exit_gen_events || |
| pop_frame_exp_events != pop_frame_gen_events) { |
| printf("TEST FAILED: JVMTI MethodExit or PopFrame events " |
| "generated incorrectly\n"); |
| errCode = STATUS_FAILED; |
| } else { |
| printf("Check #2 PASSED: JVMTI MethodExit and PopFrame " |
| "events generated correctly\n"); |
| errCode = PASSED; |
| } |
| fflush(0); |
| return errCode; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
