compiledMethod.inline.hpp

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#ifndef SHARE_CODE_COMPILEDMETHOD_INLINE_HPP
#define SHARE_CODE_COMPILEDMETHOD_INLINE_HPP

#include "code/compiledMethod.hpp"

#include "code/nativeInst.hpp"
#include "runtime/atomic.hpp"
#include "runtime/frame.hpp"

inline bool CompiledMethod::is_deopt_pc(address pc) { return is_deopt_entry(pc) || is_deopt_mh_entry(pc); }

// When using JVMCI the address might be off by the size of a call instruction.
inline bool CompiledMethod::is_deopt_entry(address pc) {
  return pc == deopt_handler_begin()
#if INCLUDE_JVMCI
    || (is_compiled_by_jvmci() && pc == (deopt_handler_begin() + NativeCall::instruction_size))
#endif
    ;
}

inline bool CompiledMethod::is_deopt_mh_entry(address pc) {
  return pc == deopt_mh_handler_begin()
#if INCLUDE_JVMCI
    || (is_compiled_by_jvmci() && pc == (deopt_mh_handler_begin() + NativeCall::instruction_size))
#endif
    ;
}

// -----------------------------------------------------------------------------
// CompiledMethod::get_deopt_original_pc
//
// Return the original PC for the given PC if:
// (a) the given PC belongs to a nmethod and
// (b) it is a deopt PC

inline address CompiledMethod::get_deopt_original_pc(const frame* fr) {
  if (fr->cb() == NULL)  return NULL;

  CompiledMethod* cm = fr->cb()->as_compiled_method_or_null();
  if (cm != NULL && cm->is_deopt_pc(fr->pc()))
    return cm->get_original_pc(fr);

  return NULL;
}


// class ExceptionCache methods

inline int ExceptionCache::count() { return Atomic::load_acquire(&_count); }

address ExceptionCache::pc_at(int index) {
  assert(index >= 0 && index < count(),"");
  return _pc[index];
}

address ExceptionCache::handler_at(int index) {
  assert(index >= 0 && index < count(),"");
  return _handler[index];
}

// increment_count is only called under lock, but there may be concurrent readers.
inline void ExceptionCache::increment_count() { Atomic::release_store(&_count, _count + 1); }


#endif // SHARE_CODE_COMPILEDMETHOD_INLINE_HPP