--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/jvmti/RedefineClasses/redefclass029/redefclass029.cpp Tue Aug 28 14:37:34 2018 -0700
@@ -0,0 +1,293 @@
+/*
+ * Copyright (c) 2004, 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 <stdlib.h>
+#include <string.h>
+
+#include <jvmti.h>
+#include "agent_common.h"
+
+#include "nsk_tools.h"
+#include "native_thread.h"
+#include "JVMTITools.h"
+#include "jvmti_tools.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define PASSED 0
+#define STATUS_FAILED 2
+
+#define MAX_ATTEMPTS 15
+
+static const char *expHSMethod = "redefclass029HotMethod";
+static const char *expHSSignature = "(I)V";
+
+#define EVENTS_COUNT 2
+static jvmtiEvent eventsList[EVENTS_COUNT] = {
+ JVMTI_EVENT_COMPILED_METHOD_LOAD,
+ JVMTI_EVENT_COMPILED_METHOD_UNLOAD
+};
+
+static jvmtiEnv *jvmti = NULL;
+static jlong timeout = 0;
+static volatile int fire = 0; /* CompiledMethodLoad received for hotspot method */
+static jmethodID hsMethodID; /* hotspot method ID */
+
+static volatile int enteredHotMethod = 0; /* "hot" method is entered */
+
+static jint bytesCount; /* number of bytes of a redefining class */
+static jbyte *clsBytes; /* bytes defining a redefining class */
+
+/** pass info about redefinition to Java **/
+JNIEXPORT jboolean JNICALL Java_nsk_jvmti_RedefineClasses_redefclass029_isRedefinitionOccurred
+ (JNIEnv *jni_env, jclass cls)
+{
+ if (fire == 1) {
+ NSK_DISPLAY0("isRedefinitionOccurred is called: fired!\n");
+ return JNI_TRUE;
+ } else {
+ return JNI_FALSE;
+ }
+}
+
+/** notify native agent from Java when "hot" method is executed **/
+JNIEXPORT void JNICALL Java_nsk_jvmti_RedefineClasses_redefclass029_notifyNativeAgent
+ (JNIEnv *jni_env, jclass cls)
+{
+ if (enteredHotMethod == 0) {
+ NSK_DISPLAY0("notifyNativeAgent is called\n");
+ enteredHotMethod = 1;
+ }
+}
+
+JNIEXPORT void JNICALL Java_nsk_jvmti_RedefineClasses_redefclass029_storeClassBytes
+ (JNIEnv *jni_env, jclass cls, jbyteArray classBytes) {
+ jboolean isCopy;
+
+ bytesCount = NSK_CPP_STUB2(GetArrayLength, jni_env, classBytes);
+ clsBytes =
+ NSK_CPP_STUB3(GetByteArrayElements, jni_env, classBytes, &isCopy);
+}
+
+/** callback functions **/
+void JNICALL
+CompiledMethodLoad(jvmtiEnv *jvmti_env, jmethodID method, jint code_size,
+ const void* code_addr, jint map_length, const jvmtiAddrLocationMap* map,
+ const void* compile_info) {
+ char *name;
+ char *sig;
+
+ NSK_DISPLAY0("CompiledMethodLoad event received for:\n");
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName,
+ jvmti_env, method, &name, &sig, NULL))) {
+ nsk_jvmti_setFailStatus();
+ return;
+ }
+ NSK_DISPLAY5("\tmethod: name=\"%s\" signature=\"%s\"\n"
+ "\tcompiled code size=%d\n"
+ "\tstarting native address=0x%p\n"
+ "\tnumber of address location map entries=%d\n",
+ name, sig, code_size, code_addr, map_length);
+
+ if ((strcmp(name, expHSMethod) == 0) &&
+ (strcmp(sig, expHSSignature) == 0)) {
+ NSK_DISPLAY0("CompiledMethodLoad: a tested hotspot method found\n");
+
+ // CR 6604375: check whether "hot" method was entered
+ if (enteredHotMethod) {
+ hsMethodID = method;
+ fire = 1;
+ } else {
+ NSK_DISPLAY0("Compilation occured before method execution. Ignoring.\n");
+ }
+ }
+}
+
+JNIEXPORT void JNICALL
+CompiledMethodUnload(jvmtiEnv* jvmti_env, jmethodID method,
+ const void* code_addr) {
+ char *name;
+ char *sig;
+ jvmtiError err;
+
+ NSK_DISPLAY0("CompiledMethodUnload event received\n");
+ // Check for the case that the class has been unloaded
+ err = jvmti_env->GetMethodName(method, &name, &sig, NULL);
+ if (err == JVMTI_ERROR_NONE) {
+ NSK_DISPLAY3("for: \tmethod: name=\"%s\" signature=\"%s\"\n\tnative address=0x%p\n",
+ name, sig, code_addr);
+ NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)name);
+ NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)sig);
+ }
+}
+/************************/
+
+/** agent's procedure **/
+static void JNICALL
+agentProc(jvmtiEnv* jvmti_env, JNIEnv* jni_env, void* arg) {
+ int tries = 0;
+ jclass decl_cls;
+ char *cls_sig;
+ jvmtiClassDefinition classDef;
+
+ /* testing sync */
+ NSK_DISPLAY1("agentProc: waiting for the debuggee start for %d msecs...\n\n",
+ (int) timeout);
+ if (!nsk_jvmti_waitForSync(timeout))
+ return;
+ NSK_DISPLAY0("agentProc: resuming the debuggee ...\n\n");
+ if (!nsk_jvmti_resumeSync())
+ return;
+
+ /* at first, send all generated CompiledMethodLoad events */
+ NSK_DISPLAY0("agentProc: sending all generated CompiledMethodLoad events ...\n\n");
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB2(GenerateEvents, jvmti, JVMTI_EVENT_COMPILED_METHOD_LOAD))) {
+ nsk_jvmti_setFailStatus();
+ nsk_jvmti_resumeSync();
+ return;
+ }
+
+ NSK_DISPLAY0("agentProc: waiting for hotspot method compilation...\n\n");
+ do {
+ THREAD_sleep(1);
+ tries++;
+ if (tries > MAX_ATTEMPTS) {
+ printf("WARNING: CompiledMethodLoad event is still not received for \"%s\" after %d attempts\n"
+ "\tThe test has no results\n\n",
+ expHSMethod, MAX_ATTEMPTS);
+ nsk_jvmti_resumeSync();
+ exit(95 + PASSED);
+ }
+ } while(fire == 0);
+
+ NSK_DISPLAY0("agentProc: hotspot method compiled\n\n");
+
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetMethodDeclaringClass,
+ jvmti_env, hsMethodID, &decl_cls))) {
+ nsk_jvmti_setFailStatus();
+ nsk_jvmti_resumeSync();
+ return;
+ }
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetClassSignature,
+ jvmti_env, decl_cls, &cls_sig, NULL))) {
+ nsk_jvmti_setFailStatus();
+ nsk_jvmti_resumeSync();
+ return;
+ } else {
+ NSK_DISPLAY1("agentProc: hotspot method class signature: \"%s\"\n\n",
+ cls_sig);
+ }
+
+ /* fill the structure jvmtiClassDefinition */
+ classDef.klass = decl_cls;
+ classDef.class_byte_count = bytesCount;
+ classDef.class_bytes = (unsigned char*) clsBytes;
+
+ NSK_DISPLAY1("agentProc: >>>>>>>> Invoke RedefineClasses():\n"
+ "\tnew class byte count=%d\n",
+ classDef.class_byte_count);
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(RedefineClasses,
+ jvmti, 1, &classDef))) {
+ nsk_jvmti_setFailStatus();
+ nsk_jvmti_resumeSync();
+ return;
+ }
+ NSK_DISPLAY0("agentProc: <<<<<<<< RedefineClasses() is successfully done\n");
+
+ /* testing sync */
+ NSK_DISPLAY1("agentProc: waiting for the debuggee finish for %d msecs...\n\n",
+ (int) timeout);
+ if (!nsk_jvmti_waitForSync(timeout))
+ return;
+ NSK_DISPLAY0("agentProc: final resuming of the debuggee ...\n\n");
+ if (!nsk_jvmti_resumeSync())
+ return;
+
+ NSK_DISPLAY0("agentProc: finished\n\n");
+}
+
+#ifdef STATIC_BUILD
+JNIEXPORT jint JNICALL Agent_OnLoad_redefclass029(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNICALL Agent_OnAttach_redefclass029(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNI_OnLoad_redefclass029(JavaVM *jvm, char *options, void *reserved) {
+ return JNI_VERSION_1_8;
+}
+#endif
+jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
+ jvmtiCapabilities caps;
+ jvmtiEventCallbacks callbacks;
+
+ /* init framework and parse options */
+ if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
+ return JNI_ERR;
+
+ /* obtain WAITTIME parameter */
+ timeout = nsk_jvmti_getWaitTime() * 60000;
+ NSK_DISPLAY1("waittime=%d msecs\n", (int) timeout);
+
+ /* create JVMTI environment */
+ if (!NSK_VERIFY((jvmti =
+ nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
+ return JNI_ERR;
+
+ /* add required capabilities */
+ memset(&caps, 0, sizeof(jvmtiCapabilities));
+ caps.can_generate_compiled_method_load_events = 1;
+ caps.can_redefine_classes = 1;
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities,
+ jvmti, &caps)))
+ return JNI_ERR;
+
+ /* set event callback */
+ NSK_DISPLAY0("setting event callbacks ...\n");
+ (void) memset(&callbacks, 0, sizeof(callbacks));
+ callbacks.CompiledMethodLoad = &CompiledMethodLoad;
+ callbacks.CompiledMethodUnload = &CompiledMethodUnload;
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetEventCallbacks,
+ jvmti, &callbacks, sizeof(callbacks))))
+ return JNI_ERR;
+
+ NSK_DISPLAY0("setting event callbacks done\nenabling events ...\n");
+ if (!nsk_jvmti_enableEvents(JVMTI_ENABLE, EVENTS_COUNT,
+ eventsList, NULL))
+ return JNI_ERR;
+ NSK_DISPLAY0("enabling the events done\n\n");
+
+ /* register agent proc */
+ if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
+ return JNI_ERR;
+
+ return JNI_OK;
+}
+
+#ifdef __cplusplus
+}
+#endif