| //===-- ObjectCache.h - Class definition for the ObjectCache -----C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_EXECUTIONENGINE_OBJECTCACHE_H |
| #define LLVM_LIB_EXECUTIONENGINE_OBJECTCACHE_H |
| |
| #include "llvm/Support/MemoryBuffer.h" |
| |
| namespace llvm { |
| |
| class Module; |
| |
| /// This is the base ObjectCache type which can be provided to an |
| /// ExecutionEngine for the purpose of avoiding compilation for Modules that |
| /// have already been compiled and an object file is available. |
| class ObjectCache { |
| public: |
| ObjectCache() { } |
| |
| virtual ~ObjectCache() { } |
| |
| /// notifyObjectCompiled - Provides a pointer to compiled code for Module M. |
| virtual void notifyObjectCompiled(const Module *M, const MemoryBuffer *Obj) = 0; |
| |
| /// getObjectCopy - Returns a pointer to a newly allocated MemoryBuffer that |
| /// contains the object which corresponds with Module M, or 0 if an object is |
| /// not available. The caller owns the MemoryBuffer returned by this function. |
| MemoryBuffer* getObjectCopy(const Module* M) { |
| const MemoryBuffer* Obj = getObject(M); |
| if (Obj) |
| return MemoryBuffer::getMemBufferCopy(Obj->getBuffer()); |
| else |
| return 0; |
| } |
| |
| protected: |
| /// getObject - Returns a pointer to a MemoryBuffer that contains an object |
| /// that corresponds with Module M, or 0 if an object is not available. |
| /// The pointer returned by this function is not suitable for loading because |
| /// the memory is read-only and owned by the ObjectCache. To retrieve an |
| /// owning pointer to a MemoryBuffer (which is suitable for calling |
| /// RuntimeDyld::loadObject() with) use getObjectCopy() instead. |
| virtual const MemoryBuffer* getObject(const Module* M) = 0; |
| }; |
| |
| } |
| |
| #endif |