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src/hotspot/share/code/compiledMethod.inline.hpp

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  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 #ifndef SHARE_CODE_COMPILEDMETHOD_INLINE_HPP
  26 #define SHARE_CODE_COMPILEDMETHOD_INLINE_HPP
  27 
  28 #include "code/compiledMethod.hpp"
  29 #include "code/nativeInst.hpp"

  30 #include "runtime/frame.hpp"
  31 #include "runtime/orderAccess.hpp"
  32 
  33 inline bool CompiledMethod::is_deopt_pc(address pc) { return is_deopt_entry(pc) || is_deopt_mh_entry(pc); }
  34 
  35 // When using JVMCI the address might be off by the size of a call instruction.
  36 inline bool CompiledMethod::is_deopt_entry(address pc) {
  37   return pc == deopt_handler_begin()
  38 #if INCLUDE_JVMCI
  39     || (is_compiled_by_jvmci() && pc == (deopt_handler_begin() + NativeCall::instruction_size))
  40 #endif
  41     ;
  42 }
  43 
  44 // -----------------------------------------------------------------------------
  45 // CompiledMethod::get_deopt_original_pc
  46 //
  47 // Return the original PC for the given PC if:
  48 // (a) the given PC belongs to a nmethod and
  49 // (b) it is a deopt PC
  50 
  51 inline address CompiledMethod::get_deopt_original_pc(const frame* fr) {
  52   if (fr->cb() == NULL)  return NULL;
  53 
  54   CompiledMethod* cm = fr->cb()->as_compiled_method_or_null();
  55   if (cm != NULL && cm->is_deopt_pc(fr->pc()))
  56     return cm->get_original_pc(fr);
  57 
  58   return NULL;
  59 }
  60 









  61 
  62 // class ExceptionCache methods
  63 
  64 inline int ExceptionCache::count() { return OrderAccess::load_acquire(&_count); }
  65 
  66 address ExceptionCache::pc_at(int index) {
  67   assert(index >= 0 && index < count(),"");
  68   return _pc[index];
  69 }
  70 
  71 address ExceptionCache::handler_at(int index) {
  72   assert(index >= 0 && index < count(),"");
  73   return _handler[index];
  74 }
  75 
  76 // increment_count is only called under lock, but there may be concurrent readers.
  77 inline void ExceptionCache::increment_count() { OrderAccess::release_store(&_count, _count + 1); }
  78 
  79 
  80 #endif // SHARE_CODE_COMPILEDMETHOD_INLINE_HPP


  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 #ifndef SHARE_CODE_COMPILEDMETHOD_INLINE_HPP
  26 #define SHARE_CODE_COMPILEDMETHOD_INLINE_HPP
  27 
  28 #include "code/compiledMethod.hpp"
  29 #include "code/nativeInst.hpp"
  30 #include "runtime/atomic.hpp"
  31 #include "runtime/frame.hpp"
  32 #include "runtime/orderAccess.hpp"
  33 
  34 inline bool CompiledMethod::is_deopt_pc(address pc) { return is_deopt_entry(pc) || is_deopt_mh_entry(pc); }
  35 
  36 // When using JVMCI the address might be off by the size of a call instruction.
  37 inline bool CompiledMethod::is_deopt_entry(address pc) {
  38   return pc == deopt_handler_begin()
  39 #if INCLUDE_JVMCI
  40     || (is_compiled_by_jvmci() && pc == (deopt_handler_begin() + NativeCall::instruction_size))
  41 #endif
  42     ;
  43 }
  44 
  45 // -----------------------------------------------------------------------------
  46 // CompiledMethod::get_deopt_original_pc
  47 //
  48 // Return the original PC for the given PC if:
  49 // (a) the given PC belongs to a nmethod and
  50 // (b) it is a deopt PC
  51 
  52 inline address CompiledMethod::get_deopt_original_pc(const frame* fr) {
  53   if (fr->cb() == NULL)  return NULL;
  54 
  55   CompiledMethod* cm = fr->cb()->as_compiled_method_or_null();
  56   if (cm != NULL && cm->is_deopt_pc(fr->pc()))
  57     return cm->get_original_pc(fr);
  58 
  59   return NULL;
  60 }
  61 
  62 inline oop* CompiledMethod::get_keepalive() { return _keepalive; }
  63 
  64 inline oop* CompiledMethod::set_keepalive(oop* obj) {
  65   return Atomic::cmpxchg(obj, &_keepalive, (oop*) NULL);
  66 }
  67 
  68 inline bool CompiledMethod::clear_keepalive(oop* old) {
  69   return Atomic::cmpxchg((oop*) NULL, &_keepalive, (oop*) old) == old;
  70 }
  71 
  72 // class ExceptionCache methods
  73 
  74 inline int ExceptionCache::count() { return OrderAccess::load_acquire(&_count); }
  75 
  76 address ExceptionCache::pc_at(int index) {
  77   assert(index >= 0 && index < count(),"");
  78   return _pc[index];
  79 }
  80 
  81 address ExceptionCache::handler_at(int index) {
  82   assert(index >= 0 && index < count(),"");
  83   return _handler[index];
  84 }
  85 
  86 // increment_count is only called under lock, but there may be concurrent readers.
  87 inline void ExceptionCache::increment_count() { OrderAccess::release_store(&_count, _count + 1); }

  88 
  89 #endif // SHARE_CODE_COMPILEDMETHOD_INLINE_HPP
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