--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/share/jvmti/hotswap/HotSwap.c Thu May 24 17:12:15 2018 -0700
@@ -0,0 +1,505 @@
+/*
+ * 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 <stdlib.h>
+#include <string.h>
+#include "jni_tools.h"
+#include "jvmti_tools.h"
+#include "Injector.h"
+#include "agent_common.h"
+
+#define PASSED 0
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* ========================================================================== */
+
+#define DEFAULT_MAX_NUMBER_OF_CLASSES 100
+#define DEFAULT_NUMBER_OF_SAMPLES 10
+#define DEFAULT_SAMPLING_INTERVAL 100
+#define DEFAULT_PACKAGE_NAME "nsk/jvmti/scenarios/hotswap"
+#define PROFILE_CLASS_NAME "nsk/share/jvmti/ProfileCollector"
+
+enum {
+ VM_MODE_COMPILED = 0,
+ VM_MODE_INTERPRETED = 1,
+ VM_MODE_MIXED = 2
+};
+
+/* scaffold objects */
+static jlong timeout = 0;
+
+/* test options */
+static int number_of_samples;
+static jlong sampling_interval;
+static const char* package_name;
+static size_t package_name_length;
+static int vm_mode = VM_MODE_COMPILED;
+static int bci_mode = BCI_MODE_EMCP;
+static int sync_freq = 0;
+
+static jclass profile_klass = NULL;
+static jfieldID count_field = NULL;
+
+/* test objects */
+static int max_classes;
+static char** names = NULL;
+static jvmtiClassDefinition* old_class_def = NULL;
+static jvmtiClassDefinition* new_class_def = NULL;
+static int classCount = 0;
+static int newFlag = NSK_FALSE;
+
+/* ========================================================================== */
+
+static int redefine(jvmtiEnv* jvmti, jvmtiClassDefinition* class_def) {
+
+ if (!NSK_VERIFY(classCount != 0))
+ return NSK_FALSE;
+
+ NSK_DISPLAY1("Redefining %d classes...\n", classCount);
+
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(RedefineClasses,
+ jvmti, classCount, class_def)))
+ return NSK_FALSE;
+
+ return NSK_TRUE;
+}
+
+/* ========================================================================== */
+
+/** callback functions **/
+
+static void JNICALL
+ClassFileLoadHook(jvmtiEnv *jvmti_env, JNIEnv *jni_env,
+ jclass class_being_redefined, jobject loader,
+ const char* name, jobject protection_domain,
+ jint class_data_len, const unsigned char* class_data,
+ jint *new_class_data_len, unsigned char** new_class_data) {
+ jint name_len;
+
+ if (name != NULL && classCount < max_classes &&
+ class_being_redefined == NULL &&
+ (strcmp(name, PROFILE_CLASS_NAME) != 0) &&
+ (strncmp(name, package_name, package_name_length) == 0)) {
+ NSK_DISPLAY1("ClassFileLoadHook: %s\n", name);
+ name_len = (jint) strlen(name) + 1;
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(Allocate, jvmti_env,
+ name_len, (unsigned char**) &names[classCount]))) {
+ nsk_jvmti_setFailStatus();
+ return;
+ }
+ memcpy(names[classCount], name, name_len);
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(Allocate,
+ jvmti_env, class_data_len, (unsigned char**)
+ &old_class_def[classCount].class_bytes))) {
+ nsk_jvmti_setFailStatus();
+ return;
+ }
+ memcpy((unsigned char*) old_class_def[classCount].class_bytes,
+ class_data, class_data_len);
+ old_class_def[classCount].class_byte_count = class_data_len;
+ classCount++;
+ }
+}
+
+static int CompiledMethodLoadEventsCount = 0;
+
+static 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 = NULL;
+ char *signature = NULL;
+
+ CompiledMethodLoadEventsCount++;
+
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName,
+ jvmti_env, method, &name, &signature, NULL))) {
+ nsk_jvmti_setFailStatus();
+ return;
+ }
+ NSK_DISPLAY3("CompiledMethodLoad event: %s%s (0x%p)\n",
+ name, signature, code_addr);
+ if (name != NULL)
+ NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)name);
+ if (signature != NULL)
+ NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)signature);
+}
+
+static int SingleStepEventsCount = 0;
+
+static void JNICALL
+SingleStep(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread,
+ jmethodID method, jlocation location) {
+
+ SingleStepEventsCount++;
+}
+
+static int ExceptionEventsCount = 0;
+
+static void JNICALL
+Exception(jvmtiEnv *jvmti_env, JNIEnv *jni_env, jthread thread,
+ jmethodID method, jlocation location, jobject exception,
+ jmethodID catch_method, jlocation catch_location) {
+
+ if (sync_freq && ((ExceptionEventsCount % sync_freq) == 0)) {
+
+ if (nsk_getVerboseMode()) {
+ jclass klass = NULL;
+ char *signature = NULL;
+
+ if (!NSK_JNI_VERIFY(jni_env, (klass =
+ NSK_CPP_STUB2(GetObjectClass, jni_env, exception)) != NULL)) {
+ nsk_jvmti_setFailStatus();
+ return;
+ }
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetClassSignature, jvmti_env,
+ klass, &signature, NULL))) {
+ nsk_jvmti_setFailStatus();
+ return;
+ }
+ NSK_DISPLAY2("Exception event %d: %s\n",
+ ExceptionEventsCount, signature);
+ if (signature != NULL)
+ NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)signature);
+ }
+
+ if (!redefine(jvmti_env, (bci_mode != BCI_MODE_EMCP && newFlag) ?
+ new_class_def : old_class_def))
+ nsk_jvmti_setFailStatus();
+
+ NSK_DISPLAY1("SingleStepEventsCount: %d\n", SingleStepEventsCount);
+ if (vm_mode == VM_MODE_MIXED) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
+ jvmti_env, ((newFlag) ? JVMTI_DISABLE : JVMTI_ENABLE),
+ JVMTI_EVENT_SINGLE_STEP, NULL)))
+ nsk_jvmti_setFailStatus();
+ }
+
+ if (nsk_getVerboseMode() && bci_mode != BCI_MODE_EMCP) {
+ jint profileCount = NSK_CPP_STUB3(GetStaticIntField, jni_env,
+ profile_klass, count_field);
+ NSK_DISPLAY1("profileCount: %d\n", profileCount);
+ }
+
+ newFlag = (newFlag) ? NSK_FALSE : NSK_TRUE;
+ }
+
+ ExceptionEventsCount++;
+}
+
+/* ========================================================================== */
+
+static jrawMonitorID waitLock = NULL;
+
+static int prepare(jvmtiEnv* jvmti, JNIEnv* jni) {
+ int i;
+
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
+ jvmti, JVMTI_DISABLE, JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, NULL)))
+ return NSK_FALSE;
+
+ if (vm_mode != VM_MODE_COMPILED) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
+ jvmti, JVMTI_ENABLE, JVMTI_EVENT_SINGLE_STEP, NULL)))
+ return NSK_FALSE;
+ }
+
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(CreateRawMonitor,
+ jvmti, "waitLock", &waitLock)))
+ return NSK_FALSE;
+
+ for (i = 0; i < classCount; i++) {
+ NSK_DISPLAY1("Find class: %s\n", names[i]);
+ if (!NSK_JNI_VERIFY(jni, (old_class_def[i].klass =
+ NSK_CPP_STUB2(FindClass, jni, names[i])) != NULL))
+ return NSK_FALSE;
+
+ if (!NSK_JNI_VERIFY(jni, (old_class_def[i].klass =
+ NSK_CPP_STUB2(NewGlobalRef, jni,
+ old_class_def[i].klass)) != NULL))
+ return NSK_FALSE;
+ }
+
+ if (bci_mode != BCI_MODE_EMCP) {
+ NSK_DISPLAY1("Find class: %s\n", PROFILE_CLASS_NAME);
+ if (!NSK_JNI_VERIFY(jni, (profile_klass =
+ NSK_CPP_STUB2(FindClass, jni, PROFILE_CLASS_NAME)) != NULL))
+ return NSK_FALSE;
+
+ if (!NSK_JNI_VERIFY(jni, (profile_klass =
+ NSK_CPP_STUB2(NewGlobalRef, jni, profile_klass)) != NULL))
+ return NSK_FALSE;
+
+ if (!NSK_JNI_VERIFY(jni, (count_field =
+ NSK_CPP_STUB4(GetStaticFieldID, jni, profile_klass,
+ (bci_mode == BCI_MODE_CALL) ? "callCount" : "allocCount",
+ "I")) != NULL))
+ return NSK_FALSE;
+
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(Allocate, jvmti,
+ classCount * sizeof(jvmtiClassDefinition),
+ (unsigned char**) &new_class_def)))
+ return NSK_FALSE;
+
+ for (i = 0; i < classCount; i++) {
+ new_class_def[i].klass = old_class_def[i].klass;
+ if (!Inject(old_class_def[i].class_bytes,
+ old_class_def[i].class_byte_count,
+ (unsigned char**) &new_class_def[i].class_bytes,
+ &new_class_def[i].class_byte_count, bci_mode))
+ return NSK_FALSE;
+ }
+ }
+
+ if (sync_freq) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
+ jvmti, JVMTI_ENABLE, JVMTI_EVENT_EXCEPTION, NULL)))
+ return NSK_FALSE;
+ }
+
+ return NSK_TRUE;
+}
+
+/* ========================================================================== */
+
+static int wait_for(jvmtiEnv* jvmti, jlong millis) {
+
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorEnter, jvmti, waitLock)))
+ return NSK_FALSE;
+
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB3(RawMonitorWait, jvmti, waitLock, millis)))
+ nsk_jvmti_setFailStatus();
+
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorExit, jvmti, waitLock)))
+ return NSK_FALSE;
+
+ return NSK_TRUE;
+}
+
+/* ========================================================================== */
+
+/** Agent algorithm. */
+static void JNICALL
+agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
+ int i;
+
+ if (!nsk_jvmti_waitForSync(timeout))
+ return;
+
+ if (!prepare(jvmti, jni)) {
+ nsk_jvmti_setFailStatus();
+ return;
+ }
+
+ /* resume debugee and wait for sync */
+ if (!nsk_jvmti_resumeSync())
+ return;
+ if (!nsk_jvmti_waitForSync(timeout))
+ return;
+
+ if (sync_freq) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
+ jvmti, JVMTI_DISABLE, JVMTI_EVENT_EXCEPTION, NULL)))
+ nsk_jvmti_setFailStatus();
+ } else {
+
+ for (i = 0; i < number_of_samples && !nsk_jvmti_isFailStatus(); i++) {
+ wait_for(jvmti, sampling_interval);
+
+ if (!redefine(jvmti, (bci_mode != BCI_MODE_EMCP && newFlag) ?
+ new_class_def : old_class_def))
+ nsk_jvmti_setFailStatus();
+
+ NSK_DISPLAY1("SingleStepEventsCount: %d\n", SingleStepEventsCount);
+ if (vm_mode == VM_MODE_MIXED) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
+ jvmti, (((i % 2)==0) ? JVMTI_DISABLE : JVMTI_ENABLE),
+ JVMTI_EVENT_SINGLE_STEP, NULL)))
+ nsk_jvmti_setFailStatus();
+ }
+
+ if (nsk_getVerboseMode() && bci_mode != BCI_MODE_EMCP) {
+ jint profileCount = NSK_CPP_STUB3(GetStaticIntField, jni,
+ profile_klass, count_field);
+ NSK_DISPLAY1("profileCount: %d\n", profileCount);
+ }
+
+ newFlag = (newFlag) ? NSK_FALSE : NSK_TRUE;
+ }
+
+ }
+
+ if (vm_mode != VM_MODE_COMPILED) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
+ jvmti, JVMTI_DISABLE, JVMTI_EVENT_SINGLE_STEP, NULL)))
+ nsk_jvmti_setFailStatus();
+ }
+
+ if (!nsk_jvmti_resumeSync())
+ return;
+}
+
+/* ========================================================================== */
+
+/** Agent library initialization. */
+jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
+ jvmtiEnv* jvmti = NULL;
+ jvmtiCapabilities caps;
+ jvmtiEventCallbacks callbacks;
+ const char* optValue;
+
+ NSK_DISPLAY0("Agent_OnLoad\n");
+
+ /* init framework and parse options */
+ if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
+ return JNI_ERR;
+
+ timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
+
+ /* get options */
+ number_of_samples = nsk_jvmti_findOptionIntValue("samples",
+ DEFAULT_NUMBER_OF_SAMPLES);
+ if (!NSK_VERIFY(number_of_samples > 0))
+ return JNI_ERR;
+ NSK_DISPLAY1("samples: %d\n", number_of_samples);
+
+ sampling_interval = nsk_jvmti_findOptionIntValue("interval",
+ DEFAULT_SAMPLING_INTERVAL);
+ if (!NSK_VERIFY(sampling_interval > 0))
+ return JNI_ERR;
+ NSK_DISPLAY1("interval: %d\n", sampling_interval);
+
+ package_name = nsk_jvmti_findOptionStringValue("package",
+ DEFAULT_PACKAGE_NAME);
+ if (!NSK_VERIFY(package_name != NULL))
+ return JNI_ERR;
+ NSK_DISPLAY1("package: %s\n", package_name);
+
+ package_name_length = strlen(package_name);
+ if (!NSK_VERIFY(package_name_length > 0))
+ return JNI_ERR;
+
+ max_classes = nsk_jvmti_findOptionIntValue("classes",
+ DEFAULT_MAX_NUMBER_OF_CLASSES);
+ if (!NSK_VERIFY(max_classes > 0))
+ return JNI_ERR;
+ NSK_DISPLAY1("classes: %d\n", max_classes);
+
+ optValue = nsk_jvmti_findOptionValue("mode");
+ if (optValue != NULL) {
+ if (strcmp(optValue, "compiled") == 0)
+ vm_mode = VM_MODE_COMPILED;
+ else if (strcmp(optValue, "interpreted") == 0)
+ vm_mode = VM_MODE_INTERPRETED;
+ else if (strcmp(optValue, "mixed") == 0)
+ vm_mode = VM_MODE_MIXED;
+ else {
+ NSK_COMPLAIN1("Unknown option value: mode=%s\n", optValue);
+ return JNI_ERR;
+ }
+ }
+
+ optValue = nsk_jvmti_findOptionValue("bci");
+ if (optValue != NULL) {
+ if (strcmp(optValue, "emcp") == 0)
+ bci_mode = BCI_MODE_EMCP;
+ else if (strcmp(optValue, "call") == 0)
+ bci_mode = BCI_MODE_CALL;
+ else if (strcmp(optValue, "alloc") == 0)
+ bci_mode = BCI_MODE_ALLOC;
+ else {
+ NSK_COMPLAIN1("Unknown option value: bci=%s\n", optValue);
+ return JNI_ERR;
+ }
+ }
+
+ sync_freq = nsk_jvmti_findOptionIntValue("sync", 0);
+ if (!NSK_VERIFY(sync_freq >= 0))
+ return JNI_ERR;
+ NSK_DISPLAY1("sync: %d\n", sync_freq);
+
+ /* create JVMTI environment */
+ if (!NSK_VERIFY((jvmti =
+ nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
+ return JNI_ERR;
+
+ /* allocate tables for classes */
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(Allocate, jvmti,
+ max_classes * sizeof(char*), (unsigned char**) &names)))
+ return JNI_ERR;
+
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(Allocate, jvmti,
+ max_classes * sizeof(jvmtiClassDefinition),
+ (unsigned char**) &old_class_def)))
+ return JNI_ERR;
+
+ /* add capabilities */
+ memset(&caps, 0, sizeof(caps));
+ caps.can_redefine_classes = 1;
+ caps.can_generate_compiled_method_load_events = 1;
+ if (vm_mode != VM_MODE_COMPILED) {
+ caps.can_generate_single_step_events = 1;
+ }
+ if (sync_freq) {
+ caps.can_generate_exception_events = 1;
+ }
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps)))
+ return JNI_ERR;
+
+ if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
+ return JNI_ERR;
+
+ /* set event callbacks */
+ memset(&callbacks, 0, sizeof(callbacks));
+ callbacks.ClassFileLoadHook = &ClassFileLoadHook;
+ callbacks.CompiledMethodLoad = &CompiledMethodLoad;
+ if (vm_mode != VM_MODE_COMPILED) {
+ callbacks.SingleStep = &SingleStep;
+ }
+ if (sync_freq) {
+ callbacks.Exception = &Exception;
+ }
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetEventCallbacks,
+ jvmti, &callbacks, sizeof(callbacks))))
+ return JNI_ERR;
+
+ /* enable events */
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
+ jvmti, JVMTI_ENABLE, JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, NULL)))
+ return JNI_ERR;
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
+ jvmti, JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_LOAD, NULL)))
+ return JNI_ERR;
+
+ return JNI_OK;
+}
+
+/* ========================================================================== */
+
+#ifdef __cplusplus
+}
+#endif