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 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 #ifndef JNI_ENV_ARG 34 35 #ifdef __cplusplus 36 #define JNI_ENV_ARG(x, y) y 37 #define JNI_ENV_ARG1(x) 38 #define JNI_ENV_PTR(x) x 39 #else 40 #define JNI_ENV_ARG(x,y) x, y 41 #define JNI_ENV_ARG1(x) x 42 #define JNI_ENV_PTR(x) (*x) 43 #endif 44 45 #endif 46 47 #define JVMTI_ENV_ARG JNI_ENV_ARG 48 #define JVMTI_ENV_ARG1 JNI_ENV_ARG1 49 #define JVMTI_ENV_PTR JNI_ENV_PTR 50 51 #define JVMTI_ERROR_CHECK(str,res) if ( res != JVMTI_ERROR_NONE) { printf(str); printf("%d\n",res); return res;} 52 #define JVMTI_ERROR_CHECK_EXPECTED_ERROR(str,res,err) if ( res != err) { printf(str); printf("unexpected error %d\n",res); return res;} 53 54 #define JVMTI_ERROR_CHECK_VOID(str,res) if ( res != JVMTI_ERROR_NONE) { printf(str); printf("%d\n",res); iGlobalStatus = 2; } 55 56 #define JVMTI_ERROR_CHECK_EXPECTED_ERROR_VOID(str,res,err) if ( res != err) { printf(str); printf("unexpected error %d\n",res); iGlobalStatus = 2; } 57 58 59 60 jvmtiEnv *jvmti; 61 jint iGlobalStatus = 0; 62 static jvmtiCapabilities jvmti_caps; 63 64 65 66 int printdump = 0; 67 68 69 void debug_printf(const char *fmt, ...) { 70 va_list args; 71 72 va_start(args, fmt); 73 if (printdump) { 74 vprintf(fmt, args); 75 } 76 va_end(args); 77 } 78 79 #ifdef STATIC_BUILD 80 JNIEXPORT jint JNICALL Agent_OnLoad_JvmtiTest(JavaVM *jvm, char *options, void *reserved) { 81 return Agent_Initialize(jvm, options, reserved); 82 } 83 JNIEXPORT jint JNICALL Agent_OnAttach_JvmtiTest(JavaVM *jvm, char *options, void *reserved) { 84 return Agent_Initialize(jvm, options, reserved); 85 } 86 JNIEXPORT jint JNI_OnLoad_JvmtiTest(JavaVM *jvm, char *options, void *reserved) { 87 return JNI_VERSION_1_8; 88 } 89 #endif 90 jint Agent_Initialize(JavaVM * jvm, char *options, void *reserved) { 91 jint res; 92 jint count; 93 char **properties; 94 int i; 95 96 if (options && strlen(options) > 0) { 97 if (strstr(options, "printdump")) { 98 printdump = 1; 99 } 100 } 101 102 res = JNI_ENV_PTR(jvm)-> 103 GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti), JVMTI_VERSION_1_1); 104 if (res < 0) { 105 debug_printf("Wrong result of a valid call to GetEnv!\n"); 106 return JNI_ERR; 107 } 108 109 110 /* Add capabilities */ 111 res = JVMTI_ENV_PTR(jvmti)->GetPotentialCapabilities(JVMTI_ENV_ARG(jvmti, &jvmti_caps)); 112 JVMTI_ERROR_CHECK("GetPotentialCapabilities returned error", res); 113 114 res = JVMTI_ENV_PTR(jvmti)->AddCapabilities(JVMTI_ENV_ARG(jvmti, &jvmti_caps)); 115 JVMTI_ERROR_CHECK("GetAddCapabilities returned error", res); 116 117 118 res = JVMTI_ENV_PTR(jvmti)->GetSystemProperties(JVMTI_ENV_ARG(jvmti, &count), &properties); 119 120 JVMTI_ERROR_CHECK("GetSystemProperties returned error", res); 121 122 for (i=0; i< count; i++) { 123 char *value; 124 125 res = JVMTI_ENV_PTR(jvmti)->GetSystemProperty(JVMTI_ENV_ARG(jvmti, (const char *)properties[i]), &value); 126 JVMTI_ERROR_CHECK("GetSystemProperty returned error", res); 127 debug_printf(" %s %s \n", properties[i], value); 128 129 /* Only writeable properties returns JVMTI_ERROR_NONE. */ 130 res = JVMTI_ENV_PTR(jvmti)->SetSystemProperty(JVMTI_ENV_ARG(jvmti, (const char *)properties[i]), value); 131 debug_printf("SetSystemProperty returned error %d\n", res); 132 133 } 134 135 return JNI_OK; 136 } 137 138 139 JNIEXPORT jint JNICALL 140 Java_nsk_jvmti_unit_functions_environment_JvmtiTest_GetResult(JNIEnv * env, jclass cls) { 141 return iGlobalStatus; 142 } 143 144 145 #ifdef __cplusplus 146 } 147 #endif