--- a/jdk/src/jdk.hprof.agent/share/native/libhprof/hprof_object.c Thu Aug 20 12:29:58 2015 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,324 +0,0 @@
-/*
- * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * - Neither the name of Oracle nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
- * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/*
- * This source code is provided to illustrate the usage of a given feature
- * or technique and has been deliberately simplified. Additional steps
- * required for a production-quality application, such as security checks,
- * input validation and proper error handling, might not be present in
- * this sample code.
- */
-
-
-/* Object table. */
-
-/*
- * An Object is unique by it's allocation site (SiteIndex), it's size,
- * it's kind, and it's serial number. Normally only the serial number
- * would have been necessary for heap=dump, and these other items
- * could have been moved to the ObjectInfo. An optimization left
- * to the reader. Lookups are not normally done on ObjectIndex's
- * anyway because we typically know when to create them.
- * Objects that have been tagged, are tagged with an ObjectIndex,
- * Objects that are not tagged need a ObjectIndex, a lookup when
- * heap=sites, and a new one when heap=dump.
- * Objects that are freed, need the tag converted to an ObjectIndex,
- * so they can be freed, but only when heap=dump.
- * The thread serial number is for the thread associated with this
- * object. If the object is a Thread object, it should be the serial
- * number for that thread. The ThreadStart event is responsible
- * for making sure the thread serial number is correct, but between the
- * initial allocation of a Thread object and it's ThreadStart event
- * the thread serial number could be for the thread that allocated
- * the Thread object.
- *
- * This will likely be the largest table when using heap=dump, when
- * there is one table entry per object.
- *
- * ObjectIndex entries differ between heap=dump and heap=sites.
- * With heap=sites, each ObjectIndex represents a unique site, size,
- * and kind of object, so many jobject's will map to a single ObjectIndex.
- * With heap=dump, every ObjectIndex maps to a unique jobject.
- *
- * During processing of a heap dump, the references for the object
- * this ObjectIndex represents is assigned to the references field
- * of the ObjectInfo as a linked list. (see hprof_references.c).
- * Once all the refernces are attached, they are processed into the
- * appropriate hprof dump information.
- *
- * The references field is set and cleared as many times as the heap
- * is dumped, as is the reference table.
- *
- */
-
-#include "hprof.h"
-
-typedef struct ObjectKey {
- SiteIndex site_index; /* Site of allocation */
- jint size; /* Size of object as reported by VM */
- ObjectKind kind; /* Kind of object, most are OBJECT_NORMAL */
- SerialNumber serial_num; /* For heap=dump, a unique number. */
-} ObjectKey;
-
-typedef struct ObjectInfo {
- RefIndex references; /* Linked list of refs in this object */
- SerialNumber thread_serial_num; /* Thread serial number for allocation */
-} ObjectInfo;
-
-/* Private internal functions. */
-
-static ObjectKey*
-get_pkey(ObjectIndex index)
-{
- void *key_ptr;
- int key_len;
-
- table_get_key(gdata->object_table, index, (void*)&key_ptr, &key_len);
- HPROF_ASSERT(key_len==(int)sizeof(ObjectKey));
- HPROF_ASSERT(key_ptr!=NULL);
- return (ObjectKey*)key_ptr;
-}
-
-static ObjectInfo *
-get_info(ObjectIndex index)
-{
- ObjectInfo *info;
-
- info = (ObjectInfo*)table_get_info(gdata->object_table, index);
- return info;
-}
-
-static void
-list_item(TableIndex i, void *key_ptr, int key_len, void *info_ptr, void *arg)
-{
- ObjectKey *pkey;
- ObjectInfo *info;
-
- HPROF_ASSERT(key_ptr!=NULL);
- HPROF_ASSERT(key_len!=0);
- HPROF_ASSERT(info_ptr!=NULL);
-
- info = (ObjectInfo*)info_ptr;
-
- pkey = (ObjectKey*)key_ptr;
- debug_message( "Object 0x%08x: site=0x%08x, SN=%u, "
- " size=%d, kind=%d, refs=0x%x, threadSN=%u\n",
- i, pkey->site_index, pkey->serial_num, pkey->size, pkey->kind,
- info->references, info->thread_serial_num);
-}
-
-static void
-clear_references(TableIndex i, void *key_ptr, int key_len, void *info_ptr, void *arg)
-{
- ObjectInfo *info;
-
- HPROF_ASSERT(info_ptr!=NULL);
- info = (ObjectInfo *)info_ptr;
- info->references = 0;
-}
-
-static void
-dump_class_references(TableIndex i, void *key_ptr, int key_len, void *info_ptr, void *arg)
-{
- ObjectInfo *info;
-
- HPROF_ASSERT(info_ptr!=NULL);
- info = (ObjectInfo *)info_ptr;
- reference_dump_class((JNIEnv*)arg, i, info->references);
-}
-
-static void
-dump_instance_references(TableIndex i, void *key_ptr, int key_len, void *info_ptr, void *arg)
-{
- ObjectInfo *info;
-
- HPROF_ASSERT(info_ptr!=NULL);
- info = (ObjectInfo *)info_ptr;
- reference_dump_instance((JNIEnv*)arg, i, info->references);
-}
-
-/* External interfaces. */
-
-ObjectIndex
-object_new(SiteIndex site_index, jint size, ObjectKind kind, SerialNumber thread_serial_num)
-{
- ObjectIndex index;
- ObjectKey key;
- static ObjectKey empty_key;
-
- key = empty_key;
- key.site_index = site_index;
- key.size = size;
- key.kind = kind;
- if ( gdata->heap_dump ) {
- static ObjectInfo empty_info;
- ObjectInfo i;
-
- i = empty_info;
- i.thread_serial_num = thread_serial_num;
- key.serial_num = gdata->object_serial_number_counter++;
- index = table_create_entry(gdata->object_table,
- &key, (int)sizeof(ObjectKey), &i);
- } else {
- key.serial_num =
- class_get_serial_number(site_get_class_index(site_index));
- index = table_find_or_create_entry(gdata->object_table,
- &key, (int)sizeof(ObjectKey), NULL, NULL);
- }
- site_update_stats(site_index, size, 1);
- return index;
-}
-
-void
-object_init(void)
-{
- jint bucket_count;
-
- bucket_count = 511;
- if ( gdata->heap_dump ) {
- bucket_count = 0;
- }
- HPROF_ASSERT(gdata->object_table==NULL);
- gdata->object_table = table_initialize("Object", 4096,
- 4096, bucket_count, (int)sizeof(ObjectInfo));
-}
-
-SiteIndex
-object_get_site(ObjectIndex index)
-{
- ObjectKey *pkey;
-
- pkey = get_pkey(index);
- return pkey->site_index;
-}
-
-jint
-object_get_size(ObjectIndex index)
-{
- ObjectKey *pkey;
-
- pkey = get_pkey(index);
- return pkey->size;
-}
-
-ObjectKind
-object_get_kind(ObjectIndex index)
-{
- ObjectKey *pkey;
-
- pkey = get_pkey(index);
- return pkey->kind;
-}
-
-ObjectKind
-object_free(ObjectIndex index)
-{
- ObjectKey *pkey;
- ObjectKind kind;
-
- pkey = get_pkey(index);
- kind = pkey->kind;
-
- /* Decrement allocations at this site. */
- site_update_stats(pkey->site_index, -(pkey->size), -1);
-
- if ( gdata->heap_dump ) {
- table_free_entry(gdata->object_table, index);
- }
- return kind;
-}
-
-void
-object_list(void)
-{
- debug_message(
- "--------------------- Object Table ------------------------\n");
- table_walk_items(gdata->object_table, &list_item, NULL);
- debug_message(
- "----------------------------------------------------------\n");
-}
-
-void
-object_cleanup(void)
-{
- table_cleanup(gdata->object_table, NULL, NULL);
- gdata->object_table = NULL;
-}
-
-void
-object_set_thread_serial_number(ObjectIndex index,
- SerialNumber thread_serial_num)
-{
- ObjectInfo *info;
-
- info = get_info(index);
- info->thread_serial_num = thread_serial_num;
-}
-
-SerialNumber
-object_get_thread_serial_number(ObjectIndex index)
-{
- ObjectInfo *info;
-
- info = get_info(index);
- return info->thread_serial_num;
-}
-
-RefIndex
-object_get_references(ObjectIndex index)
-{
- ObjectInfo *info;
-
- info = get_info(index);
- return info->references;
-}
-
-void
-object_set_references(ObjectIndex index, RefIndex ref_index)
-{
- ObjectInfo *info;
-
- info = get_info(index);
- info->references = ref_index;
-}
-
-void
-object_clear_references(void)
-{
- table_walk_items(gdata->object_table, &clear_references, NULL);
-}
-
-void
-object_reference_dump(JNIEnv *env)
-{
- table_walk_items(gdata->object_table, &dump_instance_references, (void*)env);
- table_walk_items(gdata->object_table, &dump_class_references, (void*)env);
-}