From 3e296cc180edd82fdc045a343f21d8885618ddec Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Per=20Lid=C3=A9n?= Date: Wed, 27 Jun 2018 19:45:05 +0200 Subject: [PATCH] 8205676: ZGC: Remove TLAB allocations in relocation path Reviewed-by: stefank, eosterlund --- src/hotspot/share/gc/z/zObjectAllocator.cpp | 15 --------------- 1 file changed, 15 deletions(-) diff --git a/src/hotspot/share/gc/z/zObjectAllocator.cpp b/src/hotspot/share/gc/z/zObjectAllocator.cpp index 4f662aa902d..e51df76943e 100644 --- a/src/hotspot/share/gc/z/zObjectAllocator.cpp +++ b/src/hotspot/share/gc/z/zObjectAllocator.cpp @@ -133,14 +133,6 @@ uintptr_t ZObjectAllocator::alloc_medium_object(size_t size, ZAllocationFlags fl uintptr_t ZObjectAllocator::alloc_small_object_from_nonworker(size_t size, ZAllocationFlags flags) { assert(ZThread::is_java() || ZThread::is_vm(), "Should be a Java or VM thread"); - if (flags.relocation() && flags.java_thread() && UseTLAB) { - // For relocations from Java threads, try TLAB allocation first - const uintptr_t addr = (uintptr_t)Thread::current()->tlab().allocate(ZUtils::bytes_to_words(size)); - if (addr != 0) { - return addr; - } - } - // Non-worker small page allocation can never use the reserve flags.set_no_reserve(); @@ -238,13 +230,6 @@ bool ZObjectAllocator::undo_alloc_medium_object(ZPage* page, uintptr_t addr, siz bool ZObjectAllocator::undo_alloc_small_object_from_nonworker(ZPage* page, uintptr_t addr, size_t size) { assert(page->type() == ZPageTypeSmall, "Invalid page type"); - if (ZThread::is_java()) { - // Try undo allocation in TLAB - if (Thread::current()->tlab().undo_allocate((HeapWord*)addr, ZUtils::bytes_to_words(size))) { - return true; - } - } - // Try atomic undo on shared page return page->undo_alloc_object_atomic(addr, size); }