jdk8-mips64-public/hotspot: src/share/vm/code/compiledIC.hpp@1b4e6a5d98e0 (annotated)

src/share/vm/code/compiledIC.hpp@1b4e6a5d98e0 (annotated)

src/share/vm/code/compiledIC.hpp

Mon, 28 Feb 2011 06:07:12 -0800

author: twisti
date: Mon, 28 Feb 2011 06:07:12 -0800
changeset 2603: 1b4e6a5d98e0
parent 2508: b92c45f2bc75
child 2708: 1d1603768966
permissions: -rw-r--r--

7012914: JSR 292 MethodHandlesTest C1: frame::verify_return_pc(return_address) failed: must be a return pc
Reviewed-by: never, bdelsart

 /*
  * Copyright (c) 1997, 2010, 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_CODE_COMPILEDIC_HPP
 #define SHARE_VM_CODE_COMPILEDIC_HPP
 #include "interpreter/linkResolver.hpp"
 #include "oops/compiledICHolderKlass.hpp"
 #include "oops/compiledICHolderOop.hpp"
 #include "oops/klassOop.hpp"
 #ifdef TARGET_ARCH_x86
 # include "nativeInst_x86.hpp"
 #endif
 #ifdef TARGET_ARCH_sparc
 # include "nativeInst_sparc.hpp"
 #endif
 #ifdef TARGET_ARCH_zero
 # include "nativeInst_zero.hpp"
 #endif
 #ifdef TARGET_ARCH_arm
 # include "nativeInst_arm.hpp"
 #endif
 #ifdef TARGET_ARCH_ppc
 # include "nativeInst_ppc.hpp"
 #endif
 //-----------------------------------------------------------------------------
 // The CompiledIC represents a compiled inline cache.
 //
 // In order to make patching of the inline cache MT-safe, we only allow the following
 // transitions (when not at a safepoint):
 //
 //
 //         [1] --<--  Clean -->---  [1]
 //            /       (null)      \
 //           /                     \      /-<-\
 //          /          [2]          \    /     \
 //      Interpreted  ---------> Monomorphic     | [3]
 //  (compiledICHolderOop)        (klassOop)     |
 //          \                        /   \     /
 //       [4] \                      / [4] \->-/
 //            \->-  Megamorphic -<-/
 //                  (methodOop)
 //
 // The text in paranteses () refere to the value of the inline cache receiver (mov instruction)
 //
 // The numbers in square brackets refere to the kind of transition:
 // [1]: Initial fixup. Receiver it found from debug information
 // [2]: Compilation of a method
 // [3]: Recompilation of a method (note: only entry is changed. The klassOop must stay the same)
 // [4]: Inline cache miss. We go directly to megamorphic call.
 //
 // The class automatically inserts transition stubs (using the InlineCacheBuffer) when an MT-unsafe
 // transition is made to a stub.
 //
 class CompiledIC;
 class CompiledICInfo {
   friend class CompiledIC;
  private:
   address _entry;              // entry point for call
   Handle  _cached_oop;         // Value of cached_oop (either in stub or inline cache)
   bool    _is_optimized;       // it is an optimized virtual call (i.e., can be statically bound)
   bool    _to_interpreter;     // Call it to interpreter
  public:
   address entry() const        { return _entry; }
   Handle  cached_oop() const   { return _cached_oop; }
   bool    is_optimized() const { return _is_optimized; }
 };
 class CompiledIC: public ResourceObj {
   friend class InlineCacheBuffer;
   friend class ICStub;
  private:
   NativeCall*   _ic_call;       // the call instruction
   oop*          _oop_addr;      // patchable oop cell for this IC
   RelocIterator _oops;          // iteration over any and all set-oop instructions
   bool          _is_optimized;  // an optimized virtual call (i.e., no compiled IC)
   CompiledIC(NativeCall* ic_call);
   CompiledIC(Relocation* ic_reloc);    // Must be of virtual_call_type/opt_virtual_call_type
   // low-level inline-cache manipulation. Cannot be accessed directly, since it might not be MT-safe
   // to change an inline-cache. These changes the underlying inline-cache directly. They *newer* make
   // changes to a transition stub.
   void set_ic_destination(address entry_point);
   void set_cached_oop(oop cache);
   // Reads the location of the transition stub. This will fail with an assertion, if no transition stub is
   // associated with the inline cache.
   address stub_address() const;
   bool is_in_transition_state() const;  // Use InlineCacheBuffer
  public:
   // conversion (machine PC to CompiledIC*)
   friend CompiledIC* CompiledIC_before(address return_addr);
   friend CompiledIC* CompiledIC_at(address call_site);
   friend CompiledIC* CompiledIC_at(Relocation* call_site);
   // Return the cached_oop/destination associated with this inline cache. If the cache currently points
   // to a transition stub, it will read the values from the transition stub.
   oop  cached_oop() const;
   address ic_destination() const;
   bool is_optimized() const   { return _is_optimized; }
   // State
   bool is_clean() const;
   bool is_megamorphic() const;
   bool is_call_to_compiled() const;
   bool is_call_to_interpreted() const;
   address end_of_call() { return  _ic_call->return_address(); }
   // MT-safe patching of inline caches. Note: Only safe to call is_xxx when holding the CompiledIC_ock
   // so you are guaranteed that no patching takes place. The same goes for verify.
   //
   // Note: We do not provide any direct access to the stub code, to prevent parts of the code
   // to manipulate the inline cache in MT-unsafe ways.
   //
   // They all takes a TRAP argument, since they can cause a GC if the inline-cache buffer is full.
   //
   void set_to_clean();  // Can only be called during a safepoint operation
   void set_to_monomorphic(const CompiledICInfo& info);
   void set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecode, TRAPS);
   static void compute_monomorphic_entry(methodHandle method, KlassHandle receiver_klass,
                                         bool is_optimized, bool static_bound, CompiledICInfo& info, TRAPS);
   // Location
   address instruction_address() const { return _ic_call->instruction_address(); }
   // Misc
   void print()             PRODUCT_RETURN;
   void print_compiled_ic() PRODUCT_RETURN;
   void verify()            PRODUCT_RETURN;
 };
 inline CompiledIC* CompiledIC_before(address return_addr) {
   CompiledIC* c_ic = new CompiledIC(nativeCall_before(return_addr));
   c_ic->verify();
   return c_ic;
 }
 inline CompiledIC* CompiledIC_at(address call_site) {
   CompiledIC* c_ic = new CompiledIC(nativeCall_at(call_site));
   c_ic->verify();
   return c_ic;
 }
 inline CompiledIC* CompiledIC_at(Relocation* call_site) {
   CompiledIC* c_ic = new CompiledIC(call_site);
   c_ic->verify();
   return c_ic;
 }
 //-----------------------------------------------------------------------------
 // The CompiledStaticCall represents a call to a static method in the compiled
 //
 // Transition diagram of a static call site is somewhat simpler than for an inlined cache:
 //
 //
 //           -----<----- Clean ----->-----
 //          /                             \
 //         /                               \
 //    compilled code <------------> interpreted code
 //
 //  Clean:            Calls directly to runtime method for fixup
 //  Compiled code:    Calls directly to compiled code
 //  Interpreted code: Calls to stub that set methodOop reference
 //
 //
 class CompiledStaticCall;
 class StaticCallInfo {
  private:
   address      _entry;          // Entrypoint
   methodHandle _callee;         // Callee (used when calling interpreter)
   bool         _to_interpreter; // call to interpreted method (otherwise compiled)
   friend class CompiledStaticCall;
  public:
   address      entry() const    { return _entry;  }
   methodHandle callee() const   { return _callee; }
 };
 class CompiledStaticCall: public NativeCall {
   friend class CompiledIC;
   // Also used by CompiledIC
   void set_to_interpreted(methodHandle callee, address entry);
   bool is_optimized_virtual();
  public:
   friend CompiledStaticCall* compiledStaticCall_before(address return_addr);
   friend CompiledStaticCall* compiledStaticCall_at(address native_call);
   friend CompiledStaticCall* compiledStaticCall_at(Relocation* call_site);
   // State
   bool is_clean() const;
   bool is_call_to_compiled() const;
   bool is_call_to_interpreted() const;
   // Clean static call (will force resolving on next use)
   void set_to_clean();
   // Set state. The entry must be the same, as computed by compute_entry.
   // Computation and setting is split up, since the actions are separate during
   // a OptoRuntime::resolve_xxx.
   void set(const StaticCallInfo& info);
   // Compute entry point given a method
   static void compute_entry(methodHandle m, StaticCallInfo& info);
   // Stub support
   address find_stub();
   static void set_stub_to_clean(static_stub_Relocation* static_stub);
   // Misc.
   void print()  PRODUCT_RETURN;
   void verify() PRODUCT_RETURN;
 };
 inline CompiledStaticCall* compiledStaticCall_before(address return_addr) {
   CompiledStaticCall* st = (CompiledStaticCall*)nativeCall_before(return_addr);
   st->verify();
   return st;
 }
 inline CompiledStaticCall* compiledStaticCall_at(address native_call) {
   CompiledStaticCall* st = (CompiledStaticCall*)native_call;
   st->verify();
   return st;
 }
 inline CompiledStaticCall* compiledStaticCall_at(Relocation* call_site) {
   return compiledStaticCall_at(call_site->addr());
 }
 #endif // SHARE_VM_CODE_COMPILEDIC_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/code/compiledIC.hpp@1b4e6a5d98e0 (annotated)

src/share/vm/code/compiledIC.hpp