1 /* 2 * Copyright (c) 2004, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include <string.h> 25 #include "jvmti.h" 26 #include "agent_common.h" 27 #include "jni_tools.h" 28 #include "jvmti_tools.h" 29 30 extern "C" { 31 32 /* ============================================================================= */ 33 34 static jlong timeout = 0; 35 static jvmtiEnv* st_jvmti = NULL; 36 static jlong nanos = 0; 37 static jvmtiTimerInfo timer_info1, timer_info2; 38 static int *user_data = 0; 39 40 /* ============================================================================= */ 41 42 jvmtiIterationControl JNICALL 43 heapObjectCallback(jlong class_tag, 44 jlong size, 45 jlong* tag_ptr, 46 void* user_data) { 47 48 if (!NSK_JVMTI_VERIFY( 49 st_jvmti->GetCurrentThreadCpuTimerInfo(&timer_info1))) { 50 nsk_jvmti_setFailStatus(); 51 } 52 /* Check the returned jvmtiTimerInfo structure */ 53 if (timer_info1.max_value == 0) { 54 NSK_COMPLAIN0("GetCurrentThreadCpuTimerInfo returned zero in jvmtiTimerInfo.max_value\n"); 55 nsk_jvmti_setFailStatus(); 56 } 57 if (timer_info1.may_skip_forward != JNI_TRUE && timer_info1.may_skip_forward != JNI_FALSE) { 58 NSK_COMPLAIN0("GetCurrentThreadCpuTimerInfo returned unknown type value in jvmtiTimerInfo.may_skip_forward\n"); 59 nsk_jvmti_setFailStatus(); 60 } 61 if (timer_info1.may_skip_backward != JNI_TRUE && timer_info1.may_skip_backward != JNI_FALSE) { 62 NSK_COMPLAIN0("GetCurrentThreadCpuTimerInfo returned unknown type value in jvmtiTimerInfo.may_skip_backward\n"); 63 nsk_jvmti_setFailStatus(); 64 } 65 /* ---------------------------------------------------------------------- */ 66 67 if (!NSK_JVMTI_VERIFY( 68 st_jvmti->GetCurrentThreadCpuTime(&nanos))) { 69 nsk_jvmti_setFailStatus(); 70 } 71 /* ---------------------------------------------------------------------- */ 72 73 if (!NSK_JVMTI_VERIFY( 74 st_jvmti->GetTimerInfo(&timer_info2))) { 75 nsk_jvmti_setFailStatus(); 76 } 77 /* Check the returned jvmtiTimerInfo structure */ 78 if (timer_info2.max_value == 0) { 79 NSK_COMPLAIN0("GetTimerInfo returned zero in jvmtiTimerInfo.max_value\n"); 80 nsk_jvmti_setFailStatus(); 81 } 82 if (timer_info2.may_skip_forward != JNI_TRUE && timer_info2.may_skip_forward != JNI_FALSE) { 83 NSK_COMPLAIN0("GetTimerInfo returned unknown type value in jvmtiTimerInfo.may_skip_forward\n"); 84 nsk_jvmti_setFailStatus(); 85 } 86 if (timer_info2.may_skip_backward != JNI_TRUE && timer_info2.may_skip_backward != JNI_FALSE) { 87 NSK_COMPLAIN0("GetTimerInfo returned unknown type value in jvmtiTimerInfo.may_skip_backward\n"); 88 nsk_jvmti_setFailStatus(); 89 } 90 /* ---------------------------------------------------------------------- */ 91 92 nanos = 0; 93 if (!NSK_JVMTI_VERIFY( 94 st_jvmti->GetTime(&nanos))) { 95 nsk_jvmti_setFailStatus(); 96 } 97 98 /* Iterate over only first object */ 99 return JVMTI_ITERATION_ABORT; 100 } 101 102 /* ============================================================================= */ 103 104 /** Agent algorithm. */ 105 static void JNICALL 106 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { 107 108 NSK_DISPLAY0("Wait for debugee start\n"); 109 if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout))) 110 return; 111 112 { 113 NSK_DISPLAY0("Calling IterateOverHeap with filter JVMTI_HEAP_OBJECT_EITHER\n"); 114 { 115 if (!NSK_JVMTI_VERIFY( 116 jvmti->IterateOverHeap(JVMTI_HEAP_OBJECT_EITHER, heapObjectCallback, (void *)user_data))) { 117 nsk_jvmti_setFailStatus(); 118 } 119 } 120 } 121 122 NSK_DISPLAY0("Let debugee to finish\n"); 123 if (!NSK_VERIFY(nsk_jvmti_resumeSync())) 124 return; 125 } 126 127 /* ============================================================================= */ 128 129 /** Agent library initialization. */ 130 #ifdef STATIC_BUILD 131 JNIEXPORT jint JNICALL Agent_OnLoad_iterheap007(JavaVM *jvm, char *options, void *reserved) { 132 return Agent_Initialize(jvm, options, reserved); 133 } 134 JNIEXPORT jint JNICALL Agent_OnAttach_iterheap007(JavaVM *jvm, char *options, void *reserved) { 135 return Agent_Initialize(jvm, options, reserved); 136 } 137 JNIEXPORT jint JNI_OnLoad_iterheap007(JavaVM *jvm, char *options, void *reserved) { 138 return JNI_VERSION_1_8; 139 } 140 #endif 141 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { 142 jvmtiEnv* jvmti = NULL; 143 144 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) 145 return JNI_ERR; 146 147 timeout = nsk_jvmti_getWaitTime() * 60 * 1000; 148 149 if (!NSK_VERIFY((jvmti = 150 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) 151 return JNI_ERR; 152 153 /* save pointer to environment to use it in callbacks */ 154 st_jvmti = jvmti; 155 156 { 157 jvmtiCapabilities caps; 158 memset(&caps, 0, sizeof(caps)); 159 caps.can_tag_objects = 1; 160 caps.can_get_current_thread_cpu_time = 1; 161 162 if (!NSK_JVMTI_VERIFY( 163 jvmti->AddCapabilities(&caps))) { 164 return JNI_ERR; 165 } 166 } 167 168 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) 169 return JNI_ERR; 170 171 return JNI_OK; 172 } 173 174 /* ============================================================================= */ 175 176 }