archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-17 17:44:40 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8079792: GC directory structure cleanup

Browse source 
Reviewed-by: brutisso, stefank, david
This commit is contained in:
Per Lidén 2015-05-13 15:16:06 +02:00
parent 042902811c
commit 4dc240f785
521 changed files with 2481 additions and 2573 deletions
Download patch file Download diff file Expand all files Collapse all files

105
hotspot/src/share/vm/memory/threadLocalAllocBuffer.inline.hpp
View file

@ -1,105 +0,0 @@
/*
* Copyright (c) 1999, 2014, 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.
*
*/
#ifndef SHARE_VM_MEMORY_THREADLOCALALLOCBUFFER_INLINE_HPP
#define SHARE_VM_MEMORY_THREADLOCALALLOCBUFFER_INLINE_HPP
#include "gc_interface/collectedHeap.hpp"
#include "memory/threadLocalAllocBuffer.hpp"
#include "runtime/thread.hpp"
#include "utilities/copy.hpp"
inline HeapWord* ThreadLocalAllocBuffer::allocate(size_t size) {
invariants();
HeapWord* obj = top();
if (pointer_delta(end(), obj) >= size) {
// successful thread-local allocation
#ifdef ASSERT
// Skip mangling the space corresponding to the object header to
// ensure that the returned space is not considered parsable by
// any concurrent GC thread.
size_t hdr_size = oopDesc::header_size();
Copy::fill_to_words(obj + hdr_size, size - hdr_size, badHeapWordVal);
#endif // ASSERT
// This addition is safe because we know that top is
// at least size below end, so the add can't wrap.
set_top(obj + size);
invariants();
return obj;
}
return NULL;
}
inline size_t ThreadLocalAllocBuffer::compute_size(size_t obj_size) {
const size_t aligned_obj_size = align_object_size(obj_size);
// Compute the size for the new TLAB.
// The "last" tlab may be smaller to reduce fragmentation.
// unsafe_max_tlab_alloc is just a hint.
const size_t available_size = Universe::heap()->unsafe_max_tlab_alloc(myThread()) /
HeapWordSize;
size_t new_tlab_size = MIN2(available_size, desired_size() + aligned_obj_size);
// Make sure there's enough room for object and filler int[].
const size_t obj_plus_filler_size = aligned_obj_size + alignment_reserve();
if (new_tlab_size < obj_plus_filler_size) {
// If there isn't enough room for the allocation, return failure.
if (PrintTLAB && Verbose) {
gclog_or_tty->print_cr("ThreadLocalAllocBuffer::compute_size(" SIZE_FORMAT ")"
" returns failure",
obj_size);
}
return 0;
}
if (PrintTLAB && Verbose) {
gclog_or_tty->print_cr("ThreadLocalAllocBuffer::compute_size(" SIZE_FORMAT ")"
" returns " SIZE_FORMAT,
obj_size, new_tlab_size);
}
return new_tlab_size;
}
void ThreadLocalAllocBuffer::record_slow_allocation(size_t obj_size) {
// Raise size required to bypass TLAB next time. Why? Else there's
// a risk that a thread that repeatedly allocates objects of one
// size will get stuck on this slow path.
set_refill_waste_limit(refill_waste_limit() + refill_waste_limit_increment());
_slow_allocations++;
if (PrintTLAB && Verbose) {
Thread* thrd = myThread();
gclog_or_tty->print("TLAB: %s thread: "INTPTR_FORMAT" [id: %2d]"
" obj: "SIZE_FORMAT
" free: "SIZE_FORMAT
" waste: "SIZE_FORMAT"\n",
"slow", p2i(thrd), thrd->osthread()->thread_id(),
obj_size, free(), refill_waste_limit());
}
}
#endif // SHARE_VM_MEMORY_THREADLOCALALLOCBUFFER_INLINE_HPP