--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/jvmti/IterateOverHeap/iterheap004/iterheap004.cpp Tue Aug 28 14:37:34 2018 -0700
@@ -0,0 +1,284 @@
+/*
+ * 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 <string.h>
+#include "jvmti.h"
+#include "agent_common.h"
+#include "jni_tools.h"
+#include "jvmti_tools.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+static JNIEnv *jni = NULL;
+static jvmtiEnv *jvmti = NULL;
+static jvmtiCapabilities caps;
+static jlong timeout = 0;
+
+/* ============================================================================= */
+
+
+static volatile long objectDescCount = 0;
+static volatile int callbackAborted = 0;
+static volatile int numberOfDeallocatedFromCallbacksDescriptors = 0;
+
+typedef struct ObjectDescStruct {
+ struct ObjectDescStruct *next;
+} ObjectDesc;
+
+static ObjectDesc* volatile objectDescList;
+static ObjectDesc* *objectDescArr;
+static unsigned char* deallocatedFlagsArr;
+
+
+/* ============================================================================= */
+
+
+/** heapRootCallback for first heap iteration. */
+jvmtiIterationControl JNICALL
+heapObjectCallbackForFirstIteration(jlong class_tag,
+ jlong size,
+ jlong* tag_ptr,
+ void* user_data) {
+ ObjectDesc *objectDescBuf;
+
+ /* set tag */
+ *tag_ptr = (jlong)++objectDescCount;
+
+ /* Allocate memory for next list element*/
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB3(Allocate, jvmti, (sizeof(ObjectDesc)),
+ (unsigned char**)&objectDescBuf))) {
+ nsk_jvmti_setFailStatus();
+ callbackAborted = 1;
+ NSK_COMPLAIN0("heapObjectCallbackForFirstIteration: Allocation failed. Iteration aborted.\n");
+ return JVMTI_ITERATION_ABORT;
+ }
+ objectDescBuf->next = objectDescList;
+ objectDescList = objectDescBuf;
+
+ return JVMTI_ITERATION_CONTINUE;
+}
+
+/** heapRootCallback for second heap iterator. */
+jvmtiIterationControl JNICALL
+heapObjectCallbackForSecondIteration(jlong class_tag,
+ jlong size,
+ jlong* tag_ptr,
+ void* user_data) {
+
+ long ind = (long)((*tag_ptr) - 1);
+
+ if (ind < 0 || ind > objectDescCount ) {
+ NSK_COMPLAIN1("heapObjectCallbackForSecondIteration: invalid object tag value: %d\n", (long)*tag_ptr);
+ nsk_jvmti_setFailStatus();
+ callbackAborted = 1;
+ return JVMTI_ITERATION_ABORT;
+ }
+
+ /* Deallocate memory of list element*/
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)objectDescArr[ind]))) {
+ nsk_jvmti_setFailStatus();
+ callbackAborted = 1;
+ NSK_COMPLAIN0("heapObjectCallbackForSecondIteration: Deallocation failed. Iteration aborted.\n");
+ return JVMTI_ITERATION_ABORT;
+ }
+
+ numberOfDeallocatedFromCallbacksDescriptors++;
+ deallocatedFlagsArr[ind] = 1;
+
+ /* unset tag */
+ *tag_ptr = 0;
+
+ return JVMTI_ITERATION_CONTINUE;
+}
+
+/* ============================================================================= */
+
+/** Agent algorithm. */
+static void JNICALL
+agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
+ long ind;
+ ObjectDesc *objectDesc;
+ int fakeUserData = 0;
+
+ NSK_DISPLAY0("Wait for debugee start\n");
+ if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout)))
+ return;
+
+ {
+ do {
+ objectDescList = NULL;
+
+ NSK_DISPLAY0("Calling IterateOverHeap with filter JVMTI_HEAP_OBJECT_UNTAGGED\n");
+ {
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB4(IterateOverHeap, jvmti,
+ JVMTI_HEAP_OBJECT_UNTAGGED, heapObjectCallbackForFirstIteration,
+ &fakeUserData))) {
+ nsk_jvmti_setFailStatus();
+ break;
+ }
+ }
+ if (callbackAborted) break;
+
+ if (objectDescCount == 0) {
+ NSK_COMPLAIN0("First IterateOverHeap call had not visited any object\n");
+ nsk_jvmti_setFailStatus();
+ break;
+ } else {
+ NSK_DISPLAY1("Number of objects first IterateOverHeap visited: %d\n", objectDescCount);
+ }
+
+ /* Allocate memory for array to save pointers to ObjectDescList elements */
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB3(Allocate, jvmti, (objectDescCount * sizeof(ObjectDesc*)),
+ (unsigned char**)&objectDescArr))) {
+ nsk_jvmti_setFailStatus();
+ break;
+ }
+
+ /* Allocate memory for flags array and fill with false values */
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB3(Allocate, jvmti, (objectDescCount * sizeof(unsigned char)),
+ &deallocatedFlagsArr))) {
+ nsk_jvmti_setFailStatus();
+ break;
+ }
+
+ for (ind = 0; ind < objectDescCount; ind++) {
+ deallocatedFlagsArr[ind] = 0;
+ }
+
+ /* Save all pointers to ObjectDescList elements in objectDescArr */
+ objectDesc = objectDescList;
+ for (ind = 0; ind < objectDescCount; ind++) {
+ objectDescArr[ind] = objectDesc;
+ objectDesc = objectDesc->next;
+ }
+
+ /* Verify objectDescCount and objectDescList length in agreement */
+ if (!NSK_VERIFY(objectDesc == NULL)) {
+ nsk_jvmti_setFailStatus();
+ break;
+ }
+
+ NSK_DISPLAY0("Calling IterateOverHeap with filter JVMTI_HEAP_OBJECT_TAGGED\n");
+ {
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB4(IterateOverHeap, jvmti,
+ JVMTI_HEAP_OBJECT_TAGGED, heapObjectCallbackForSecondIteration,
+ &fakeUserData))) {
+ nsk_jvmti_setFailStatus();
+ }
+ }
+
+ if (numberOfDeallocatedFromCallbacksDescriptors == 0) {
+ NSK_COMPLAIN1("Deallocate func. hasn't been called from IterateOverHeap'callback. "
+ "numberOfDeallocatedFromCallbacksDescriptors = %d\n", numberOfDeallocatedFromCallbacksDescriptors);
+ nsk_jvmti_setFailStatus();
+ }
+
+ for (ind = 0; ind < objectDescCount; ind++) {
+ if (!deallocatedFlagsArr[ind]) {
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)objectDescArr[ind]))) {
+ NSK_COMPLAIN1("Unable to deallocate descriptor. Index = %d \n", ind);
+ nsk_jvmti_setFailStatus();
+ return;
+ }
+ }
+ }
+
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)objectDescArr))) {
+ nsk_jvmti_setFailStatus();
+ }
+
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)deallocatedFlagsArr))) {
+ nsk_jvmti_setFailStatus();
+ }
+
+ } while (0);
+ }
+
+ NSK_DISPLAY0("Let debugee to finish\n");
+ if (!NSK_VERIFY(nsk_jvmti_resumeSync()))
+ return;
+}
+
+/* ============================================================================= */
+
+/* ============================================================================= */
+
+/** Agent library initialization. */
+#ifdef STATIC_BUILD
+JNIEXPORT jint JNICALL Agent_OnLoad_iterheap004(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNICALL Agent_OnAttach_iterheap004(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNI_OnLoad_iterheap004(JavaVM *jvm, char *options, void *reserved) {
+ return JNI_VERSION_1_8;
+}
+#endif
+jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
+
+ if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
+ return JNI_ERR;
+
+ timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
+
+ if (!NSK_VERIFY((jvmti =
+ nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
+ return JNI_ERR;
+
+ memset(&caps, 0, sizeof(caps));
+ caps.can_tag_objects = 1;
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) {
+ return JNI_ERR;
+ }
+
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(GetCapabilities,
+ jvmti, &caps)))
+ return JNI_ERR;
+
+ if (!caps.can_tag_objects)
+ NSK_DISPLAY0("Warning: tagging objects is not available\n");
+
+ if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
+ return JNI_ERR;
+
+ return JNI_OK;
+}
+
+/* ============================================================================= */
+
+#ifdef __cplusplus
+}
+#endif