--- a/jdk/src/jdk.runtime/share/native/libjsdt/JVM.c Thu Feb 19 11:24:08 2015 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,334 +0,0 @@
-/*
- * Copyright (c) 2008, 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. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * 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 <stdlib.h>
-
-#include "jvm.h"
-#include "jni.h"
-#include "jni_util.h"
-
-#include "jvm_symbols.h"
-#include "sun_tracing_dtrace_JVM.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-static JvmSymbols* jvm_symbols = NULL;
-
-static void initialize() {
- static int initialized = 0;
- if (initialized == 0) {
- jvm_symbols = lookupJvmSymbols();
- initialized = 1;
- }
-}
-
-/*
- * Class: sun_tracing_dtrace_JVM
- * Method: isSupported0
- * Signature: ()I
- */
-JNIEXPORT jboolean JNICALL Java_sun_tracing_dtrace_JVM_isSupported0(
- JNIEnv* env, jclass cls) {
- initialize();
- if (jvm_symbols != NULL) {
- return jvm_symbols->IsSupported(env) ? JNI_TRUE : JNI_FALSE;
- } else {
- return JNI_FALSE;
- }
-}
-
-// Macros that cause an immediate return if we detect an exception
-#define CHECK if ((*env)->ExceptionOccurred(env)) { return; }
-#define CHECK_(x) if ((*env)->ExceptionOccurred(env)) { return x; }
-
-static void readProbeData (
- JNIEnv* env, jobject probe, JVM_DTraceProbe* jvm_probe) {
- jclass clazz;
- jmethodID mid;
- jobject method;
-
- if (jvm_probe == NULL) {
- return; // just in case
- }
-
- clazz = (*env)->GetObjectClass(env, probe); CHECK
-
- mid = (*env)->GetMethodID(
- env, clazz, "getFunctionName", "()Ljava/lang/String;"); CHECK
- jvm_probe->function = (jstring)(*env)->CallObjectMethod(
- env, probe, mid); CHECK
-
- mid = (*env)->GetMethodID(
- env, clazz, "getProbeName", "()Ljava/lang/String;"); CHECK
- jvm_probe->name = (jstring)(*env)->CallObjectMethod(env, probe, mid); CHECK
-
- mid = (*env)->GetMethodID(
- env, clazz, "getMethod", "()Ljava/lang/reflect/Method;"); CHECK
- method = (*env)->CallObjectMethod(env, probe, mid); CHECK
- jvm_probe->method = (*env)->FromReflectedMethod(env, method); CHECK
-}
-
-static void readFieldInterfaceAttributes(
- char* annotationName, JNIEnv* env, jobject provider,
- JVM_DTraceInterfaceAttributes* attrs) {
- jobject result;
- jobject result_clazz;
- jclass provider_clazz;
- jclass annotation_clazz;
- jmethodID get;
- jmethodID enc;
-
- provider_clazz = (*env)->GetObjectClass(env, provider); CHECK
- annotation_clazz = (*env)->FindClass(env, annotationName); CHECK
-
- get = (*env)->GetMethodID(env, provider_clazz, "getNameStabilityFor",
- "(Ljava/lang/Class;)Lcom/sun/tracing/dtrace/StabilityLevel;"); CHECK
- result = (*env)->CallObjectMethod(
- env, provider, get, annotation_clazz); CHECK
- result_clazz = (*env)->GetObjectClass(env, result); CHECK
- enc = (*env)->GetMethodID(env, result_clazz, "getEncoding", "()I"); CHECK
- attrs->nameStability = (*env)->CallIntMethod(env, result, enc); CHECK
-
- get = (*env)->GetMethodID(env, provider_clazz, "getDataStabilityFor",
- "(Ljava/lang/Class;)Lcom/sun/tracing/dtrace/StabilityLevel;"); CHECK
- result = (*env)->CallObjectMethod(
- env, provider, get, annotation_clazz); CHECK
- result_clazz = (*env)->GetObjectClass(env, result); CHECK
- enc = (*env)->GetMethodID(env, result_clazz, "getEncoding", "()I"); CHECK
- attrs->dataStability = (*env)->CallIntMethod(env, result, enc); CHECK
-
- get = (*env)->GetMethodID(env, provider_clazz, "getDependencyClassFor",
- "(Ljava/lang/Class;)Lcom/sun/tracing/dtrace/DependencyClass;"); CHECK
- result = (*env)->CallObjectMethod(
- env, provider, get, annotation_clazz); CHECK
- result_clazz = (*env)->GetObjectClass(env, result); CHECK
- enc = (*env)->GetMethodID(env, result_clazz, "getEncoding", "()I"); CHECK
- attrs->dependencyClass = (*env)->CallIntMethod(env, result, enc); CHECK
-}
-
-static void readInterfaceAttributes(
- JNIEnv* env, jobject provider, JVM_DTraceProvider* jvm_provider) {
- readFieldInterfaceAttributes("com/sun/tracing/dtrace/ProviderAttributes",
- env, provider, &(jvm_provider->providerAttributes));
- readFieldInterfaceAttributes("com/sun/tracing/dtrace/ModuleAttributes",
- env, provider, &(jvm_provider->moduleAttributes));
- readFieldInterfaceAttributes("com/sun/tracing/dtrace/FunctionAttributes",
- env, provider, &(jvm_provider->functionAttributes));
- readFieldInterfaceAttributes("com/sun/tracing/dtrace/NameAttributes",
- env, provider, &(jvm_provider->nameAttributes));
- readFieldInterfaceAttributes("com/sun/tracing/dtrace/ArgsAttributes",
- env, provider, &(jvm_provider->argsAttributes));
-}
-
-static int readProviderData(
- JNIEnv* env, jobject provider, JVM_DTraceProvider* jvm_provider) {
- jmethodID mid;
- jobjectArray probes;
- jsize i;
- jclass clazz = (*env)->GetObjectClass(env, provider); CHECK_(0)
- mid = (*env)->GetMethodID(
- env, clazz, "getProbes", "()[Lsun/tracing/dtrace/DTraceProbe;"); CHECK_(0)
- probes = (jobjectArray)(*env)->CallObjectMethod(
- env, provider, mid); CHECK_(0)
-
- // Fill JVM structure, describing provider
- jvm_provider->probe_count = (*env)->GetArrayLength(env, probes); CHECK_(0)
- jvm_provider->probes = (JVM_DTraceProbe*)calloc(
- jvm_provider->probe_count, sizeof(*jvm_provider->probes));
- mid = (*env)->GetMethodID(
- env, clazz, "getProviderName", "()Ljava/lang/String;"); CHECK_(0)
- jvm_provider->name = (jstring)(*env)->CallObjectMethod(
- env, provider, mid); CHECK_(0)
-
- readInterfaceAttributes(env, provider, jvm_provider); CHECK_(0)
-
- for (i = 0; i < jvm_provider->probe_count; ++i) {
- jobject probe = (*env)->GetObjectArrayElement(env, probes, i); CHECK_(0)
- readProbeData(env, probe, &jvm_provider->probes[i]); CHECK_(0)
- }
-
- return 1;
-}
-
-/*
- * Class: sun_tracing_dtrace_JVM
- * Method: activate0
- * Signature: ()J
- */
-JNIEXPORT jlong JNICALL Java_sun_tracing_dtrace_JVM_activate0(
- JNIEnv* env, jclass cls, jstring moduleName, jobjectArray providers) {
- jlong handle = 0;
- jsize num_providers;
- jsize i;
- jsize count = 0;
- JVM_DTraceProvider* jvm_providers;
-
- initialize();
-
- if (jvm_symbols == NULL) {
- return 0;
- }
-
- num_providers = (*env)->GetArrayLength(env, providers); CHECK_(0L)
-
- jvm_providers = (JVM_DTraceProvider*)calloc(
- num_providers, sizeof(*jvm_providers));
-
- for (; count < num_providers; ++count) {
- JVM_DTraceProvider* p = &(jvm_providers[count]);
- jobject provider = (*env)->GetObjectArrayElement(
- env, providers, count);
- if ((*env)->ExceptionOccurred(env) ||
- ! readProviderData(env, provider, p)) {
- // got an error, bail out!
- break;
- }
- }
-
- if (count == num_providers) {
- // all providers successfully loaded - get the handle
- handle = jvm_symbols->Activate(
- env, JVM_TRACING_DTRACE_VERSION, moduleName,
- num_providers, jvm_providers);
- }
-
- for (i = 0; i < num_providers; ++i) {
- JVM_DTraceProvider* p = &(jvm_providers[i]);
- free(p->probes);
- }
- free(jvm_providers);
-
- return handle;
-}
-
-/*
- * Class: sun_tracing_dtrace_JVM
- * Method: dispose0
- * Signature: (J)V
- */
-JNIEXPORT void JNICALL Java_sun_tracing_dtrace_JVM_dispose0(
- JNIEnv* env, jclass cls, jlong handle) {
- if (jvm_symbols != NULL && handle != 0) {
- jvm_symbols->Dispose(env, handle);
- }
-}
-
-/*
- * Class: sun_tracing_dtrace_JVM
- * Method: isEnabled0
- * Signature: (Ljava/lang/String;Ljava/lang/String;)Z
- */
-JNIEXPORT jboolean JNICALL Java_sun_tracing_dtrace_JVM_isEnabled0(
- JNIEnv* env, jclass cls, jobject method) {
- jmethodID mid;
- if (jvm_symbols != NULL && method != NULL) {
- mid = (*env)->FromReflectedMethod(env, method);
- return jvm_symbols->IsProbeEnabled(env, mid);
- }
- return JNI_FALSE;
-}
-
-/*
- * Class: sun_tracing_dtrace_JVM
- * Method: defineClass0
- * Signature: (Ljava/lang/ClassLoader;Ljava/lang/String;[BII)Ljava/lang/Class;
- *
- * The implementation of this native static method is a copy of that of
- * the native instance method Java_java_lang_ClassLoader_defineClass0()
- * with the implicit "this" parameter becoming the "loader" parameter.
- *
- * This code was cloned and modified from java_lang_reflect_Proxy
- */
-JNIEXPORT jclass JNICALL
-Java_sun_tracing_dtrace_JVM_defineClass0(
- JNIEnv *env, jclass ignore, jobject loader, jstring name, jbyteArray data,
- jint offset, jint length)
-{
- jbyte *body;
- char *utfName;
- jclass result = 0;
- char buf[128];
-
- if (data == NULL) {
- return 0;
- }
-
- /* Work around 4153825. malloc crashes on Solaris when passed a
- * negative size.
- */
- if (length < 0) {
- return 0;
- }
-
- body = (jbyte *)malloc(length);
-
- if (body == 0) {
- return 0;
- }
-
- (*env)->GetByteArrayRegion(env, data, offset, length, body);
-
- if ((*env)->ExceptionOccurred(env))
- goto free_body;
-
- if (name != NULL) {
- int i;
- jsize len = (*env)->GetStringUTFLength(env, name);
- int unicode_len = (*env)->GetStringLength(env, name);
- if (len >= (jsize)sizeof(buf)) {
- utfName = malloc(len + 1);
- if (utfName == NULL) {
- goto free_body;
- }
- } else {
- utfName = buf;
- }
- (*env)->GetStringUTFRegion(env, name, 0, unicode_len, utfName);
-
- // Convert '.' to '/' in the package name
- for (i = 0; i < unicode_len; ++i) {
- if (utfName[i] == '.') {
- utfName[i] = '/';
- }
- }
- } else {
- utfName = NULL;
- }
-
- result = (*env)->DefineClass(env, utfName, loader, body, length);
-
- if (utfName && utfName != buf)
- free(utfName);
-
- free_body:
- free(body);
- return result;
-}
-
-#ifdef __cplusplus
-}
-#endif