1 /*
2 * Copyright (c) 1997, 2014, 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 *
590 TLAB_FIELD_OFFSET(top)
591 TLAB_FIELD_OFFSET(pf_top)
592 TLAB_FIELD_OFFSET(size) // desired_size
593 TLAB_FIELD_OFFSET(refill_waste_limit)
594 TLAB_FIELD_OFFSET(number_of_refills)
595 TLAB_FIELD_OFFSET(fast_refill_waste)
596 TLAB_FIELD_OFFSET(slow_allocations)
597
598 #undef TLAB_FIELD_OFFSET
599
600 static ByteSize allocated_bytes_offset() { return byte_offset_of(Thread, _allocated_bytes); }
601
602 public:
603 volatile intptr_t _Stalled;
604 volatile int _TypeTag;
605 ParkEvent * _ParkEvent; // for synchronized()
606 ParkEvent * _SleepEvent; // for Thread.sleep
607 ParkEvent * _MutexEvent; // for native internal Mutex/Monitor
608 ParkEvent * _MuxEvent; // for low-level muxAcquire-muxRelease
609 int NativeSyncRecursion; // diagnostic
610
611 volatile int _OnTrap; // Resume-at IP delta
612 jint _hashStateW; // Marsaglia Shift-XOR thread-local RNG
613 jint _hashStateX; // thread-specific hashCode generator state
614 jint _hashStateY;
615 jint _hashStateZ;
616 void * _schedctl;
617
618
619 volatile jint rng[4]; // RNG for spin loop
620
621 // Low-level leaf-lock primitives used to implement synchronization
622 // and native monitor-mutex infrastructure.
623 // Not for general synchronization use.
624 static void SpinAcquire(volatile int * Lock, const char * Name);
625 static void SpinRelease(volatile int * Lock);
626 static void muxAcquire(volatile intptr_t * Lock, const char * Name);
627 static void muxAcquireW(volatile intptr_t * Lock, ParkEvent * ev);
628 static void muxRelease(volatile intptr_t * Lock);
629 };
630
631 // Inline implementation of Thread::current()
632 // Thread::current is "hot" it's called > 128K times in the 1st 500 msecs of
633 // startup.
634 // ThreadLocalStorage::thread is warm -- it's called > 16K times in the same
635 // period. This is inlined in thread_<os_family>.inline.hpp.
636
637 inline Thread* Thread::current() {
638 #ifdef ASSERT
639 // This function is very high traffic. Define PARANOID to enable expensive
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1 /*
2 * Copyright (c) 1997, 2015, 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 *
590 TLAB_FIELD_OFFSET(top)
591 TLAB_FIELD_OFFSET(pf_top)
592 TLAB_FIELD_OFFSET(size) // desired_size
593 TLAB_FIELD_OFFSET(refill_waste_limit)
594 TLAB_FIELD_OFFSET(number_of_refills)
595 TLAB_FIELD_OFFSET(fast_refill_waste)
596 TLAB_FIELD_OFFSET(slow_allocations)
597
598 #undef TLAB_FIELD_OFFSET
599
600 static ByteSize allocated_bytes_offset() { return byte_offset_of(Thread, _allocated_bytes); }
601
602 public:
603 volatile intptr_t _Stalled;
604 volatile int _TypeTag;
605 ParkEvent * _ParkEvent; // for synchronized()
606 ParkEvent * _SleepEvent; // for Thread.sleep
607 ParkEvent * _MutexEvent; // for native internal Mutex/Monitor
608 ParkEvent * _MuxEvent; // for low-level muxAcquire-muxRelease
609 int NativeSyncRecursion; // diagnostic
610 Thread * volatile _TSelf; // allows xchg T,T->TSelf style MFENCE replacement
611
612 volatile int _OnTrap; // Resume-at IP delta
613 jint _hashStateW; // Marsaglia Shift-XOR thread-local RNG
614 jint _hashStateX; // thread-specific hashCode generator state
615 jint _hashStateY;
616 jint _hashStateZ;
617 void * _schedctl;
618
619
620 volatile jint rng[4]; // RNG for spin loop
621 static ByteSize TSelf_offset() { return byte_offset_of(Thread, _TSelf); }
622
623 // Low-level leaf-lock primitives used to implement synchronization
624 // and native monitor-mutex infrastructure.
625 // Not for general synchronization use.
626 static void SpinAcquire(volatile int * Lock, const char * Name);
627 static void SpinRelease(volatile int * Lock);
628 static void muxAcquire(volatile intptr_t * Lock, const char * Name);
629 static void muxAcquireW(volatile intptr_t * Lock, ParkEvent * ev);
630 static void muxRelease(volatile intptr_t * Lock);
631 };
632
633 // Inline implementation of Thread::current()
634 // Thread::current is "hot" it's called > 128K times in the 1st 500 msecs of
635 // startup.
636 // ThreadLocalStorage::thread is warm -- it's called > 16K times in the same
637 // period. This is inlined in thread_<os_family>.inline.hpp.
638
639 inline Thread* Thread::current() {
640 #ifdef ASSERT
641 // This function is very high traffic. Define PARANOID to enable expensive
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