jdk8-mips64-public/hotspot: src/share/vm/shark/sharkCompiler.hpp@427b2fb1944f

8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
Reviewed-by: dcubed

     1 /*

     2  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright 2008, 2009, 2010, 2011 Red Hat, Inc.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

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    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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    26 #ifndef SHARE_VM_SHARK_SHARKCOMPILER_HPP

    27 #define SHARE_VM_SHARK_SHARKCOMPILER_HPP

    29 #include "ci/ciEnv.hpp"

    30 #include "ci/ciMethod.hpp"

    31 #include "compiler/abstractCompiler.hpp"

    32 #include "compiler/compileBroker.hpp"

    33 #include "shark/llvmHeaders.hpp"

    34 #include "shark/sharkMemoryManager.hpp"

    36 class SharkContext;

    38 class SharkCompiler : public AbstractCompiler {

    39  public:

    40   // Creation

    41   SharkCompiler();

    43   // Name of this compiler

    44   const char *name()     { return "shark"; }

    46   // Missing feature tests

    47   bool supports_native() { return true; }

    48   bool supports_osr()    { return true; }

    49   bool can_compile_method(methodHandle method)  {

    50     return ! (method->is_method_handle_intrinsic() || method->is_compiled_lambda_form());

    51   }

    53   // Initialization

    54   void initialize();

    56   // Compile a normal (bytecode) method and install it in the VM

    57   void compile_method(ciEnv* env, ciMethod* target, int entry_bci);

    59   // Generate a wrapper for a native (JNI) method

    60   nmethod* generate_native_wrapper(MacroAssembler* masm,

    61                                    methodHandle    target,

    62                                    int             compile_id,

    63                                    BasicType*      arg_types,

    64                                    BasicType       return_type);

    66   // Free compiled methods (and native wrappers)

    67   void free_compiled_method(address code);

    69   // Each thread generating IR needs its own context.  The normal

    70   // context is used for bytecode methods, and is protected from

    71   // multiple simultaneous accesses by being restricted to the

    72   // compiler thread.  The native context is used for JNI methods,

    73   // and is protected from multiple simultaneous accesses by the

    74   // adapter handler library lock.

    75  private:

    76   SharkContext* _normal_context;

    77   SharkContext* _native_context;

    79  public:

    80   SharkContext* context() const {

    81     if (JavaThread::current()->is_Compiler_thread()) {

    82       return _normal_context;

    83     }

    84     else {

    85       assert(AdapterHandlerLibrary_lock->owned_by_self(), "should be");

    86       return _native_context;

    87     }

    88   }

    90   // The LLVM execution engine is the JIT we use to generate native

    91   // code.  It is thread safe, but we need to protect it with a lock

    92   // of our own because otherwise LLVM's lock and HotSpot's locks

    93   // interleave and deadlock.  The SharkMemoryManager is not thread

    94   // safe, and is protected by the same lock as the execution engine.

    95  private:

    96   Monitor*               _execution_engine_lock;

    97   SharkMemoryManager*    _memory_manager;

    98   llvm::ExecutionEngine* _execution_engine;

   100  private:

   101   Monitor* execution_engine_lock() const {

   102     return _execution_engine_lock;

   103   }

   104   SharkMemoryManager* memory_manager() const {

   105     assert(execution_engine_lock()->owned_by_self(), "should be");

   106     return _memory_manager;

   107   }

   108   llvm::ExecutionEngine* execution_engine() const {

   109     assert(execution_engine_lock()->owned_by_self(), "should be");

   110     return _execution_engine;

   111   }

   113   // Global access

   114  public:

   115   static SharkCompiler* compiler() {

   116     AbstractCompiler *compiler =

   117       CompileBroker::compiler(CompLevel_full_optimization);

   118     assert(compiler->is_shark() && compiler->is_initialized(), "should be");

   119     return (SharkCompiler *) compiler;

   120   }

   122   // Helpers

   123  private:

   124   static const char* methodname(const char* klass, const char* method);

   125   void generate_native_code(SharkEntry*     entry,

   126                             llvm::Function* function,

   127                             const char*     name);

   128   void free_queued_methods();

   129 };

   131 #endif // SHARE_VM_SHARK_SHARKCOMPILER_HPP

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