1 /* 2 * Copyright (c) 2003, 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 <stdio.h> 25 #include <string.h> 26 #include "jvmti.h" 27 #include "agent_common.h" 28 29 extern "C" { 30 31 32 #define JVMTI_ERROR_CHECK(str,res) if ( res != JVMTI_ERROR_NONE) { printf(str); printf("%d\n",res); return res;} 33 #define JVMTI_ERROR_CHECK_EXPECTED_ERROR(str,res,err) if ( res != err) { printf(str); printf("unexpected error %d\n",res); return res;} 34 35 #define JVMTI_ERROR_CHECK_VOID(str,res) if ( res != JVMTI_ERROR_NONE) { printf(str); printf("%d\n",res); iGlobalStatus = 2; } 36 37 #define JVMTI_ERROR_CHECK_EXPECTED_ERROR_VOID(str,res,err) if ( res != err) { printf(str); printf("unexpected error %d\n",res); iGlobalStatus = 2; } 38 39 40 41 jvmtiEnv *jvmti; 42 jint iGlobalStatus = 0; 43 static jvmtiCapabilities jvmti_caps; 44 45 46 47 int printdump = 0; 48 49 50 void debug_printf(const char *fmt, ...) { 51 va_list args; 52 53 va_start(args, fmt); 54 if (printdump) { 55 vprintf(fmt, args); 56 } 57 va_end(args); 58 } 59 60 #ifdef STATIC_BUILD 61 JNIEXPORT jint JNICALL Agent_OnLoad_JvmtiTest(JavaVM *jvm, char *options, void *reserved) { 62 return Agent_Initialize(jvm, options, reserved); 63 } 64 JNIEXPORT jint JNICALL Agent_OnAttach_JvmtiTest(JavaVM *jvm, char *options, void *reserved) { 65 return Agent_Initialize(jvm, options, reserved); 66 } 67 JNIEXPORT jint JNI_OnLoad_JvmtiTest(JavaVM *jvm, char *options, void *reserved) { 68 return JNI_VERSION_1_8; 69 } 70 #endif 71 jint Agent_Initialize(JavaVM * jvm, char *options, void *reserved) { 72 jint res; 73 jint count; 74 char **properties; 75 int i; 76 77 if (options && strlen(options) > 0) { 78 if (strstr(options, "printdump")) { 79 printdump = 1; 80 } 81 } 82 83 res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1); 84 if (res < 0) { 85 debug_printf("Wrong result of a valid call to GetEnv!\n"); 86 return JNI_ERR; 87 } 88 89 90 /* Add capabilities */ 91 res = jvmti->GetPotentialCapabilities(&jvmti_caps); 92 JVMTI_ERROR_CHECK("GetPotentialCapabilities returned error", res); 93 94 res = jvmti->AddCapabilities(&jvmti_caps); 95 JVMTI_ERROR_CHECK("GetAddCapabilities returned error", res); 96 97 98 res = jvmti->GetSystemProperties(&count, &properties); 99 100 JVMTI_ERROR_CHECK("GetSystemProperties returned error", res); 101 102 for (i=0; i< count; i++) { 103 char *value; 104 105 res = jvmti->GetSystemProperty((const char *) properties[i], &value); 106 JVMTI_ERROR_CHECK("GetSystemProperty returned error", res); 107 debug_printf(" %s %s \n", properties[i], value); 108 109 /* Only writeable properties returns JVMTI_ERROR_NONE. */ 110 res = jvmti->SetSystemProperty((const char *) properties[i], value); 111 debug_printf("SetSystemProperty returned error %d\n", res); 112 113 } 114 115 return JNI_OK; 116 } 117 118 119 JNIEXPORT jint JNICALL 120 Java_nsk_jvmti_unit_functions_environment_JvmtiTest_GetResult(JNIEnv * env, jclass cls) { 121 return iGlobalStatus; 122 } 123 124 125 }