jdk8-mips64-public/hotspot: src/share/vm/shark/sharkMemoryManager.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, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright 2009 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

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    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

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  *

    24  */

    26 #ifndef SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP

    27 #define SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP

    29 #include "shark/llvmHeaders.hpp"

    30 #include "shark/sharkEntry.hpp"

    32 // SharkMemoryManager wraps the LLVM JIT Memory Manager.  We could use

    33 // this to run our own memory allocation policies, but for now all we

    34 // use it for is figuring out where the resulting native code ended up.

    36 class SharkMemoryManager : public llvm::JITMemoryManager {

    37  public:

    38   SharkMemoryManager()

    39     : _mm(llvm::JITMemoryManager::CreateDefaultMemManager()) {}

    41  private:

    42   llvm::JITMemoryManager* _mm;

    44  private:

    45   llvm::JITMemoryManager* mm() const {

    46     return _mm;

    47   }

    49  private:

    50   std::map<const llvm::Function*, SharkEntry*> _entry_map;

    52  public:

    53   void set_entry_for_function(const llvm::Function* function,

    54                               SharkEntry*           entry) {

    55     _entry_map[function] = entry;

    56   }

    57   SharkEntry* get_entry_for_function(const llvm::Function* function) {

    58     return _entry_map[function];

    59   }

    61  public:

    62   void AllocateGOT();

    63   unsigned char* getGOTBase() const;

    64   unsigned char* allocateStub(const llvm::GlobalValue* F,

    65                               unsigned StubSize,

    66                               unsigned Alignment);

    67   unsigned char* startFunctionBody(const llvm::Function* F,

    68                                    uintptr_t& ActualSize);

    69   void endFunctionBody(const llvm::Function* F,

    70                        unsigned char* FunctionStart,

    71                        unsigned char* FunctionEnd);

    73   void *getPointerToNamedFunction(const std::string &Name, bool AbortOnFailure = true);

    74   void setPoisonMemory(bool);

    75   uint8_t* allocateGlobal(uintptr_t, unsigned int);

    76   void setMemoryWritable();

    77   void setMemoryExecutable();

    78   void deallocateFunctionBody(void *ptr);

    79   unsigned char *allocateSpace(intptr_t Size,

    80                                unsigned int Alignment);

    82 #if SHARK_LLVM_VERSION <= 32

    83 uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment, unsigned SectionID);

    84 uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment, unsigned SectionID);

    85 unsigned char* startExceptionTable(const llvm::Function* F,

    86                                    uintptr_t& ActualSize);

    87 void deallocateExceptionTable(void *ptr);

    88 void endExceptionTable(const llvm::Function* F,

    89                                    unsigned char* TableStart,

    90                                    unsigned char* TableEnd,

    91                                    unsigned char* FrameRegister);

    92 #else

    93 uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment, unsigned SectionID, llvm::StringRef SectionName);

    94 uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment, unsigned SectionID, llvm::StringRef SectionName, bool IsReadOnly);

    95 bool finalizeMemory(std::string *ErrMsg = 0);

    96 #endif

    98 };

   100 #endif // SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP

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