text: /*
   * 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
  
  static jvmtiEnv *jvmti = NULL;
  static jvmtiCapabilities caps;
  static jvmtiEventCallbacks callbacks;
  static jint result = PASSED;
  static jboolean printdump = JNI_FALSE;
  static jmethodID mid;
  static int breakpointsExpected = 0;
  static int breakpointsCount = 0;
  
  void JNICALL Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env,
          jthread thr, jmethodID method, jlocation location) {
      breakpointsCount++;
  }
  
  #ifdef STATIC_BUILD
  JNIEXPORT jint JNICALL Agent_OnLoad_clrbrk001(JavaVM *jvm, char *options, void *reserved) {
      return Agent_Initialize(jvm, options, reserved);
  }
  JNIEXPORT jint JNICALL Agent_OnAttach_clrbrk001(JavaVM *jvm, char *options, void *reserved) {
      return Agent_Initialize(jvm, options, reserved);
  }
  JNIEXPORT jint JNI_OnLoad_clrbrk001(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;
          }
          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);
              return JNI_ERR;
          }
      } else {
          printf("Warning: Breakpoint is not implemented\n");
      }
  
      return JNI_OK;
  }
  
  JNIEXPORT void JNICALL
  Java_nsk_jvmti_ClearBreakpoint_clrbrk001_getReady(JNIEnv *env, jclass cls, jint i) {
      mid = JNI_ENV_PTR(env)->GetStaticMethodID(JNI_ENV_ARG(env, cls),
           "trial", "(I)I");
      if (mid == NULL) {
          printf("Cannot find method \"trial(I)I\"\n");
          result = STATUS_FAILED;
      } else {
          breakpointsExpected = i;
      }
  }
  
  JNIEXPORT void JNICALL Java_nsk_jvmti_ClearBreakpoint_clrbrk001_setBP(JNIEnv *env, jclass cls) {
      jvmtiError err;
  
      if (jvmti == NULL) {
          printf("JVMTI client was not properly loaded!\n");
          return;
      }
  
      if (!caps.can_generate_breakpoint_events) {
          return;
      }
  
      if (mid == NULL) {
          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;
      }
  }
  
  JNIEXPORT void JNICALL Java_nsk_jvmti_ClearBreakpoint_clrbrk001_clearBP(JNIEnv *env, jclass cls) {
      jvmtiError err;
  
      if (jvmti == NULL) {
          printf("JVMTI client was not properly loaded!\n");
          return;
      }
  
      if (!caps.can_generate_breakpoint_events) {
          return;
      }
  
      if (mid == NULL) {
          return;
      }
  
      err = (*jvmti)->ClearBreakpoint(jvmti, mid, 0);
      if (err != JVMTI_ERROR_NONE) {
          printf("Failed to ClearBreakpoint: %s (%d)\n",
                 TranslateError(err), err);
          result = STATUS_FAILED;
      }
  }
  
  JNIEXPORT jint JNICALL
  Java_nsk_jvmti_ClearBreakpoint_clrbrk001_check(JNIEnv *env, jclass cls) {
      if (jvmti == NULL) {
          printf("JVMTI client was not properly loaded!\n");
          return STATUS_FAILED;
      }
  
      if (!caps.can_generate_breakpoint_events) {
          return result;
      }
  
      if (printdump == JNI_TRUE) {
          printf("Total number of Breakpoint events: %d\n", breakpointsCount);
      }
  
      if (breakpointsCount != breakpointsExpected) {
          printf("Wrong number of Breakpoint events: %d, expected: %d\n",
              breakpointsCount, breakpointsExpected);
          result = STATUS_FAILED;
      }
  
      return result;
  }
  
  #ifdef __cplusplus
  }
  #endif
  