jdk8-mips64-public/hotspot: src/share/vm/ci/ciMethodData.hpp@5eb9169b1a14 (annotated)

src/share/vm/ci/ciMethodData.hpp@5eb9169b1a14 (annotated)

src/share/vm/ci/ciMethodData.hpp

Wed, 12 Oct 2011 21:00:13 -0700

author: twisti
date: Wed, 12 Oct 2011 21:00:13 -0700
changeset 3197: 5eb9169b1a14
parent 2903: fabcf26ee72f
child 4037: da91efe96a93
permissions: -rw-r--r--

7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
Reviewed-by: jrose, never

 /*
  * Copyright (c) 2001, 2011, 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_VM_CI_CIMETHODDATA_HPP
 #define SHARE_VM_CI_CIMETHODDATA_HPP
 #include "ci/ciClassList.hpp"
 #include "ci/ciKlass.hpp"
 #include "ci/ciObject.hpp"
 #include "ci/ciUtilities.hpp"
 #include "oops/methodDataOop.hpp"
 #include "oops/oop.inline.hpp"
 class ciBitData;
 class ciCounterData;
 class ciJumpData;
 class ciReceiverTypeData;
 class ciRetData;
 class ciBranchData;
 class ciArrayData;
 class ciMultiBranchData;
 class ciArgInfoData;
 typedef ProfileData ciProfileData;
 class ciBitData : public BitData {
 public:
   ciBitData(DataLayout* layout) : BitData(layout) {};
 };
 class ciCounterData : public CounterData {
 public:
   ciCounterData(DataLayout* layout) : CounterData(layout) {};
 };
 class ciJumpData : public JumpData {
 public:
   ciJumpData(DataLayout* layout) : JumpData(layout) {};
 };
 class ciReceiverTypeData : public ReceiverTypeData {
 public:
   ciReceiverTypeData(DataLayout* layout) : ReceiverTypeData(layout) {};
   void set_receiver(uint row, ciKlass* recv) {
     assert((uint)row < row_limit(), "oob");
     set_intptr_at(receiver0_offset + row * receiver_type_row_cell_count,
                   (intptr_t) recv);
   }
   ciKlass* receiver(uint row) {
     assert((uint)row < row_limit(), "oob");
     ciObject* recv = (ciObject*)intptr_at(receiver0_offset + row * receiver_type_row_cell_count);
     assert(recv == NULL || recv->is_klass(), "wrong type");
     return (ciKlass*)recv;
   }
   // Copy & translate from oop based ReceiverTypeData
   virtual void translate_from(ProfileData* data) {
     translate_receiver_data_from(data);
   }
   void translate_receiver_data_from(ProfileData* data);
 #ifndef PRODUCT
   void print_data_on(outputStream* st);
   void print_receiver_data_on(outputStream* st);
 #endif
 };
 class ciVirtualCallData : public VirtualCallData {
   // Fake multiple inheritance...  It's a ciReceiverTypeData also.
   ciReceiverTypeData* rtd_super() { return (ciReceiverTypeData*) this; }
 public:
   ciVirtualCallData(DataLayout* layout) : VirtualCallData(layout) {};
   void set_receiver(uint row, ciKlass* recv) {
     rtd_super()->set_receiver(row, recv);
   }
   ciKlass* receiver(uint row) {
     return rtd_super()->receiver(row);
   }
   // Copy & translate from oop based VirtualCallData
   virtual void translate_from(ProfileData* data) {
     rtd_super()->translate_receiver_data_from(data);
   }
 #ifndef PRODUCT
   void print_data_on(outputStream* st);
 #endif
 };
 class ciRetData : public RetData {
 public:
   ciRetData(DataLayout* layout) : RetData(layout) {};
 };
 class ciBranchData : public BranchData {
 public:
   ciBranchData(DataLayout* layout) : BranchData(layout) {};
 };
 class ciArrayData : public ArrayData {
 public:
   ciArrayData(DataLayout* layout) : ArrayData(layout) {};
 };
 class ciMultiBranchData : public MultiBranchData {
 public:
   ciMultiBranchData(DataLayout* layout) : MultiBranchData(layout) {};
 };
 class ciArgInfoData : public ArgInfoData {
 public:
   ciArgInfoData(DataLayout* layout) : ArgInfoData(layout) {};
 };
 // ciMethodData
 //
 // This class represents a methodDataOop in the HotSpot virtual
 // machine.
 class ciMethodData : public ciObject {
   CI_PACKAGE_ACCESS
 private:
   // Size in bytes
   int _data_size;
   int _extra_data_size;
   // Data entries
   intptr_t* _data;
   // Cached hint for data_before()
   int _hint_di;
   // Is data attached?  And is it mature?
   enum { empty_state, immature_state, mature_state };
   u_char _state;
   // Set this true if empty extra_data slots are ever witnessed.
   u_char _saw_free_extra_data;
   // Support for interprocedural escape analysis
   intx              _eflags;          // flags on escape information
   intx              _arg_local;       // bit set of non-escaping arguments
   intx              _arg_stack;       // bit set of stack-allocatable arguments
   intx              _arg_returned;    // bit set of returned arguments
   // Maturity of the oop when the snapshot is taken.
   int _current_mileage;
   // These counters hold the age of MDO in tiered. In tiered we can have the same method
   // running at different compilation levels concurrently. So, in order to precisely measure
   // its maturity we need separate counters.
   int _invocation_counter;
   int _backedge_counter;
   // Coherent snapshot of original header.
   methodDataOopDesc _orig;
   ciMethodData(methodDataHandle h_md);
   ciMethodData();
   // Accessors
   int data_size() const { return _data_size; }
   int extra_data_size() const { return _extra_data_size; }
   intptr_t * data() const { return _data; }
   methodDataOop get_methodDataOop() const {
     if (handle() == NULL) return NULL;
     methodDataOop mdo = (methodDataOop)get_oop();
     assert(mdo != NULL, "illegal use of unloaded method data");
     return mdo;
   }
   const char* type_string()                      { return "ciMethodData"; }
   void print_impl(outputStream* st);
   DataLayout* data_layout_at(int data_index) const {
     assert(data_index % sizeof(intptr_t) == 0, "unaligned");
     return (DataLayout*) (((address)_data) + data_index);
   }
   bool out_of_bounds(int data_index) {
     return data_index >= data_size();
   }
   // hint accessors
   int      hint_di() const  { return _hint_di; }
   void set_hint_di(int di)  {
     assert(!out_of_bounds(di), "hint_di out of bounds");
     _hint_di = di;
   }
   ciProfileData* data_before(int bci) {
     // avoid SEGV on this edge case
     if (data_size() == 0)
       return NULL;
     int hint = hint_di();
     if (data_layout_at(hint)->bci() <= bci)
       return data_at(hint);
     return first_data();
   }
   // What is the index of the first data entry?
   int first_di() { return 0; }
   ciArgInfoData *arg_info() const;
 public:
   bool is_method_data()  { return true; }
   void set_mature() { _state = mature_state; }
   bool is_empty()  { return _state == empty_state; }
   bool is_mature() { return _state == mature_state; }
   int creation_mileage() { return _orig.creation_mileage(); }
   int current_mileage()  { return _current_mileage; }
   int invocation_count() { return _invocation_counter; }
   int backedge_count()   { return _backedge_counter;   }
   // Transfer information about the method to methodDataOop.
   // would_profile means we would like to profile this method,
   // meaning it's not trivial.
   void set_would_profile(bool p);
   // Also set the numer of loops and blocks in the method.
   // Again, this is used to determine if a method is trivial.
   void set_compilation_stats(short loops, short blocks);
   void load_data();
   // Convert a dp (data pointer) to a di (data index).
   int dp_to_di(address dp) {
     return dp - ((address)_data);
   }
   // Get the data at an arbitrary (sort of) data index.
   ciProfileData* data_at(int data_index);
   // Walk through the data in order.
   ciProfileData* first_data() { return data_at(first_di()); }
   ciProfileData* next_data(ciProfileData* current);
   bool is_valid(ciProfileData* current) { return current != NULL; }
   // Get the data at an arbitrary bci, or NULL if there is none.
   ciProfileData* bci_to_data(int bci);
   ciProfileData* bci_to_extra_data(int bci, bool create_if_missing);
   uint overflow_trap_count() const {
     return _orig.overflow_trap_count();
   }
   uint overflow_recompile_count() const {
     return _orig.overflow_recompile_count();
   }
   uint decompile_count() const {
     return _orig.decompile_count();
   }
   uint trap_count(int reason) const {
     return _orig.trap_count(reason);
   }
   uint trap_reason_limit() const { return _orig.trap_reason_limit(); }
   uint trap_count_limit()  const { return _orig.trap_count_limit(); }
   // Helpful query functions that decode trap_state.
   int has_trap_at(ciProfileData* data, int reason);
   int has_trap_at(int bci, int reason) {
     return has_trap_at(bci_to_data(bci), reason);
   }
   int trap_recompiled_at(ciProfileData* data);
   int trap_recompiled_at(int bci) {
     return trap_recompiled_at(bci_to_data(bci));
   }
   void clear_escape_info();
   bool has_escape_info();
   void update_escape_info();
   void set_eflag(methodDataOopDesc::EscapeFlag f);
   void clear_eflag(methodDataOopDesc::EscapeFlag f);
   bool eflag_set(methodDataOopDesc::EscapeFlag f) const;
   void set_arg_local(int i);
   void set_arg_stack(int i);
   void set_arg_returned(int i);
   void set_arg_modified(int arg, uint val);
   bool is_arg_local(int i) const;
   bool is_arg_stack(int i) const;
   bool is_arg_returned(int i) const;
   uint arg_modified(int arg) const;
   // Code generation helper
   ByteSize offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data);
   int      byte_offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { return in_bytes(offset_of_slot(data, slot_offset_in_data)); }
 #ifndef PRODUCT
   // printing support for method data
   void print();
   void print_data_on(outputStream* st);
 #endif
 };
 #endif // SHARE_VM_CI_CIMETHODDATA_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/ci/ciMethodData.hpp@5eb9169b1a14 (annotated)

src/share/vm/ci/ciMethodData.hpp