1 /* 2 * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 // Thread::current is "hot" it's called > 128K times in the 1st 500 msecs of 26 // startup. 27 // ThreadLocalStorage::thread is warm -- it's called > 16K times in the same 28 // period. Thread::current() now calls ThreadLocalStorage::thread() directly. 29 // For SPARC, to avoid excessive register window spill-fill faults, 30 // we aggressively inline these routines. 31 32 inline Thread* ThreadLocalStorage::thread() { 33 // don't use specialized code if +UseMallocOnly -- may confuse Purify et al. 34 debug_only(if (UseMallocOnly) return get_thread_slow();); 35 36 uintptr_t raw = pd_raw_thread_id(); 37 int ix = pd_cache_index(raw); 38 Thread *Candidate = ThreadLocalStorage::_get_thread_cache[ix]; 39 if (Candidate->_self_raw_id == raw) { 40 // hit 41 return Candidate; 42 } else { 43 return ThreadLocalStorage::get_thread_via_cache_slowly(raw, ix); 44 } 45 }