154a1a02bf
Use script and some manual fixup to fix directores names in include guards. Reviewed-by: lfoltan, eosterlund, kbarrett
103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
/*
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* Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef CPU_SPARC_JAVAFRAMEANCHOR_SPARC_HPP
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#define CPU_SPARC_JAVAFRAMEANCHOR_SPARC_HPP
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private:
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volatile int _flags;
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public:
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enum pd_Constants {
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flushed = 1 // winodows have flushed
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};
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int flags(void) { return _flags; }
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void set_flags(int flags) { _flags = flags; }
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static ByteSize flags_offset() { return byte_offset_of(JavaFrameAnchor, _flags); }
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// Each arch must define clear, copy
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// These are used by objects that only care about:
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// 1 - initializing a new state (thread creation, javaCalls)
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// 2 - saving a current state (javaCalls)
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// 3 - restoring an old state (javaCalls)
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void clear(void) {
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// clearing _last_Java_sp must be first
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_last_Java_sp = NULL;
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// fence?
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_flags = 0;
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_last_Java_pc = NULL;
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}
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void copy(JavaFrameAnchor* src) {
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// In order to make sure the transition state is valid for "this"
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// We must clear _last_Java_sp before copying the rest of the new data
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//
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// Hack Alert: Temporary bugfix for 4717480/4721647
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// To act like previous version (pd_cache_state) don't NULL _last_Java_sp
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// unless the value is changing
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//
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if (_last_Java_sp != src->_last_Java_sp)
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_last_Java_sp = NULL;
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_flags = src->_flags;
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_last_Java_pc = src->_last_Java_pc;
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// Must be last so profiler will always see valid frame if has_last_frame() is true
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_last_Java_sp = src->_last_Java_sp;
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}
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// Is stack walkable
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inline bool walkable( void) {
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return _flags & flushed;
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}
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void make_walkable(JavaThread* thread);
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void set_last_Java_sp(intptr_t* sp) { _last_Java_sp = sp; }
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address last_Java_pc(void) { return _last_Java_pc; }
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// These are only used by friends
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private:
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intptr_t* last_Java_sp() const {
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// _last_Java_sp will always be a an unbiased stack pointer
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// if is is biased then some setter screwed up. This is
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// deadly.
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assert(((intptr_t)_last_Java_sp & 0xF) == 0, "Biased last_Java_sp");
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return _last_Java_sp;
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}
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void capture_last_Java_pc(intptr_t* sp);
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void set_window_flushed( void) {
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_flags |= flushed;
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OrderAccess::fence();
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}
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#endif // CPU_SPARC_JAVAFRAMEANCHOR_SPARC_HPP
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