1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/shark/sharkMemoryManager.hpp Wed Aug 11 05:51:21 2010 -0700
1.3 @@ -0,0 +1,88 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
1.6 + * Copyright 2009 Red Hat, Inc.
1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 + *
1.9 + * This code is free software; you can redistribute it and/or modify it
1.10 + * under the terms of the GNU General Public License version 2 only, as
1.11 + * published by the Free Software Foundation.
1.12 + *
1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 + * version 2 for more details (a copy is included in the LICENSE file that
1.17 + * accompanied this code).
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License version
1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 + *
1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.24 + * or visit www.oracle.com if you need additional information or have any
1.25 + * questions.
1.26 + *
1.27 + */
1.28 +
1.29 +// SharkMemoryManager wraps the LLVM JIT Memory Manager. We could use
1.30 +// this to run our own memory allocation policies, but for now all we
1.31 +// use it for is figuring out where the resulting native code ended up.
1.32 +
1.33 +class SharkMemoryManager : public llvm::JITMemoryManager {
1.34 + public:
1.35 + SharkMemoryManager()
1.36 + : _mm(llvm::JITMemoryManager::CreateDefaultMemManager()) {}
1.37 +
1.38 + private:
1.39 + llvm::JITMemoryManager* _mm;
1.40 +
1.41 + private:
1.42 + llvm::JITMemoryManager* mm() const {
1.43 + return _mm;
1.44 + }
1.45 +
1.46 + private:
1.47 + std::map<const llvm::Function*, SharkEntry*> _entry_map;
1.48 +
1.49 + public:
1.50 + void set_entry_for_function(const llvm::Function* function,
1.51 + SharkEntry* entry) {
1.52 + _entry_map[function] = entry;
1.53 + }
1.54 + SharkEntry* get_entry_for_function(const llvm::Function* function) {
1.55 + return _entry_map[function];
1.56 + }
1.57 +
1.58 + public:
1.59 + void AllocateGOT();
1.60 + unsigned char* getGOTBase() const;
1.61 + unsigned char* allocateStub(const llvm::GlobalValue* F,
1.62 + unsigned StubSize,
1.63 + unsigned Alignment);
1.64 + unsigned char* startFunctionBody(const llvm::Function* F,
1.65 + uintptr_t& ActualSize);
1.66 + void endFunctionBody(const llvm::Function* F,
1.67 + unsigned char* FunctionStart,
1.68 + unsigned char* FunctionEnd);
1.69 + unsigned char* startExceptionTable(const llvm::Function* F,
1.70 + uintptr_t& ActualSize);
1.71 + void endExceptionTable(const llvm::Function* F,
1.72 + unsigned char* TableStart,
1.73 + unsigned char* TableEnd,
1.74 + unsigned char* FrameRegister);
1.75 +#if SHARK_LLVM_VERSION < 27
1.76 + void* getDlsymTable() const;
1.77 + void SetDlsymTable(void *ptr);
1.78 +#endif
1.79 + void setPoisonMemory(bool);
1.80 + uint8_t* allocateGlobal(uintptr_t, unsigned int);
1.81 + void setMemoryWritable();
1.82 + void setMemoryExecutable();
1.83 +#if SHARK_LLVM_VERSION >= 27
1.84 + void deallocateExceptionTable(void *ptr);
1.85 + void deallocateFunctionBody(void *ptr);
1.86 +#else
1.87 + void deallocateMemForFunction(const llvm::Function* F);
1.88 +#endif
1.89 + unsigned char *allocateSpace(intptr_t Size,
1.90 + unsigned int Alignment);
1.91 +};
