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/*
* Copyright (c) 2018, 2022, 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_OOPS_METHOD_INLINE_HPP
#define SHARE_OOPS_METHOD_INLINE_HPP
#include "oops/method.hpp"
#include "classfile/vmIntrinsics.hpp"
#include "runtime/atomic.hpp"
inline address Method::from_compiled_entry() const {
return Atomic::load_acquire(&_from_compiled_entry);
}
inline address Method::from_interpreted_entry() const {
return Atomic::load_acquire(&_from_interpreted_entry);
}
inline void Method::set_method_data(MethodData* data) {
// The store into method must be released. On platforms without
// total store order (TSO) the reference may become visible before
// the initialization of data otherwise.
Atomic::release_store(&_method_data, data);
}
inline CompiledMethod* volatile Method::code() const {
assert( check_code(), "" );
return Atomic::load_acquire(&_code);
}
// Write (bci, line number) pair to stream
inline void CompressedLineNumberWriteStream::write_pair_regular(int bci_delta, int line_delta) {
// bci and line number does not compress into single byte.
// Write out escape character and use regular compression for bci and line number.
write_byte((jubyte)0xFF);
write_signed_int(bci_delta);
write_signed_int(line_delta);
}
inline void CompressedLineNumberWriteStream::write_pair_inline(int bci, int line) {
int bci_delta = bci - _bci;
int line_delta = line - _line;
_bci = bci;
_line = line;
// Skip (0,0) deltas - they do not add information and conflict with terminator.
if (bci_delta == 0 && line_delta == 0) return;
// Check if bci is 5-bit and line number 3-bit unsigned.
if (((bci_delta & ~0x1F) == 0) && ((line_delta & ~0x7) == 0)) {
// Compress into single byte.
jubyte value = ((jubyte) bci_delta << 3) | (jubyte) line_delta;
// Check that value doesn't match escape character.
if (value != 0xFF) {
write_byte(value);
return;
}
}
write_pair_regular(bci_delta, line_delta);
}
inline void CompressedLineNumberWriteStream::write_pair(int bci, int line) {
write_pair_inline(bci, line);
}
inline bool Method::has_compiled_code() const { return code() != NULL; }
inline bool Method::is_empty_method() const {
return code_size() == 1
&& *code_base() == Bytecodes::_return;
}
inline bool Method::is_continuation_enter_intrinsic() const {
return intrinsic_id() == vmIntrinsics::_Continuation_enterSpecial;
}
inline bool Method::is_continuation_yield_intrinsic() const {
return intrinsic_id() == vmIntrinsics::_Continuation_doYield;
}
inline bool Method::is_continuation_native_intrinsic() const {
return intrinsic_id() == vmIntrinsics::_Continuation_enterSpecial ||
intrinsic_id() == vmIntrinsics::_Continuation_doYield;
}
inline bool Method::is_special_native_intrinsic() const {
return is_method_handle_intrinsic() || is_continuation_native_intrinsic();
}
#endif // SHARE_OOPS_METHOD_INLINE_HPP
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