| /* |
| * 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 |
| |
| typedef struct { |
| char *cls; |
| char *name; |
| char *sig; |
| } frame_info; |
| |
| static jvmtiEnv *jvmti = NULL; |
| static jvmtiCapabilities caps; |
| static jvmtiEventCallbacks callbacks; |
| static jint result = PASSED; |
| static jboolean printdump = JNI_FALSE; |
| static jmethodID mid; |
| static frame_info frames[] = { |
| {"Lnsk/jvmti/GetStackTrace/getstacktr004$TestThread;", "checkPoint", "()V"}, |
| {"Lnsk/jvmti/GetStackTrace/getstacktr004$TestThread;", "chain4", "()V"}, |
| {"Lnsk/jvmti/GetStackTrace/getstacktr004$TestThread;", "chain3", "()V"}, |
| {"Lnsk/jvmti/GetStackTrace/getstacktr004$TestThread;", "chain2", "()V"}, |
| {"Lnsk/jvmti/GetStackTrace/getstacktr004$TestThread;", "chain1", "()V"}, |
| {"Lnsk/jvmti/GetStackTrace/getstacktr004$TestThread;", "run", "()V"}, |
| }; |
| |
| #define NUMBER_OF_FRAMES ((int) (sizeof(frames)/sizeof(frame_info))) |
| |
| void check(jvmtiEnv *jvmti_env, jthread thr) { |
| jvmtiError err; |
| jvmtiFrameInfo f[NUMBER_OF_FRAMES + 1]; |
| jclass callerClass; |
| char *sigClass, *name, *sig, *generic; |
| jint i, count; |
| |
| err = (*jvmti_env)->GetStackTrace(jvmti_env, thr, |
| 0, NUMBER_OF_FRAMES + 1, f, &count); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetStackTrace) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| if (count != NUMBER_OF_FRAMES) { |
| printf("Wrong frame count, expected: %d, actual: %d\n", |
| NUMBER_OF_FRAMES, count); |
| result = STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> frame count: %d\n", count); |
| } |
| for (i = 0; i < count; i++) { |
| if (printdump == JNI_TRUE) { |
| printf(">>> checking frame#%d ...\n", i); |
| } |
| err = (*jvmti_env)->GetMethodDeclaringClass(jvmti_env, f[i].method, |
| &callerClass); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodDeclaringClass#%d) unexpected error: %s (%d)\n", |
| i, TranslateError(err), err); |
| result = STATUS_FAILED; |
| continue; |
| } |
| err = (*jvmti_env)->GetClassSignature(jvmti_env, callerClass, |
| &sigClass, &generic); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetClassSignature#%d) unexpected error: %s (%d)\n", |
| i, TranslateError(err), err); |
| result = STATUS_FAILED; |
| continue; |
| } |
| err = (*jvmti_env)->GetMethodName(jvmti_env, f[i].method, |
| &name, &sig, &generic); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodName#%d) unexpected error: %s (%d)\n", |
| i, TranslateError(err), err); |
| result = STATUS_FAILED; |
| continue; |
| } |
| if (printdump == JNI_TRUE) { |
| printf(">>> class: \"%s\"\n", sigClass); |
| printf(">>> method: \"%s%s\"\n", name, sig); |
| } |
| if (i < NUMBER_OF_FRAMES) { |
| if (sigClass == NULL || strcmp(sigClass, frames[i].cls) != 0) { |
| printf("(frame#%d) wrong class sig: \"%s\", expected: \"%s\"\n", |
| i, sigClass, frames[i].cls); |
| result = STATUS_FAILED; |
| } |
| if (name == NULL || strcmp(name, frames[i].name) != 0) { |
| printf("(frame#%d) wrong method name: \"%s\", expected: \"%s\"\n", |
| i, name, frames[i].name); |
| result = STATUS_FAILED; |
| } |
| if (sig == NULL || strcmp(sig, frames[i].sig) != 0) { |
| printf("(frame#%d) wrong method sig: \"%s\", expected: \"%s\"\n", |
| i, sig, frames[i].sig); |
| result = STATUS_FAILED; |
| } |
| } |
| } |
| } |
| |
| void JNICALL Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env, |
| jthread thr, jmethodID method, jlocation location) { |
| if (mid != method) { |
| printf("ERROR: didn't know where we got called from"); |
| result = STATUS_FAILED; |
| return; |
| } |
| check(jvmti_env, thr); |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_getstacktr004(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_getstacktr004(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_getstacktr004(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_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 is not implemented\n"); |
| } |
| |
| return JNI_OK; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_GetStackTrace_getstacktr004_getReady(JNIEnv *env, jclass cls, jclass clazz) { |
| jvmtiError err; |
| |
| if (jvmti == NULL) { |
| printf("JVMTI client was not properly loaded!\n"); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| if (!caps.can_generate_breakpoint_events) { |
| return; |
| } |
| |
| mid = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, clazz), |
| "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("(SetBreakpoint) unexpected error: %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_GetStackTrace_getstacktr004_getRes(JNIEnv *env, jclass cls) { |
| return result; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
