1 //===-- ObjectCache.h - Class definition for the ObjectCache -----C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_LIB_EXECUTIONENGINE_OBJECTCACHE_H
11 #define LLVM_LIB_EXECUTIONENGINE_OBJECTCACHE_H
13 #include "llvm/Support/MemoryBuffer.h"
19 /// This is the base ObjectCache type which can be provided to an
20 /// ExecutionEngine for the purpose of avoiding compilation for Modules that
21 /// have already been compiled and an object file is available.
26 virtual ~ObjectCache() { }
28 /// notifyObjectCompiled - Provides a pointer to compiled code for Module M.
29 virtual void notifyObjectCompiled(const Module *M, const MemoryBuffer *Obj) = 0;
31 /// getObjectCopy - Returns a pointer to a newly allocated MemoryBuffer that
32 /// contains the object which corresponds with Module M, or 0 if an object is
33 /// not available. The caller owns the MemoryBuffer returned by this function.
34 MemoryBuffer* getObjectCopy(const Module* M) {
35 const MemoryBuffer* Obj = getObject(M);
37 return MemoryBuffer::getMemBufferCopy(Obj->getBuffer());
43 /// getObject - Returns a pointer to a MemoryBuffer that contains an object
44 /// that corresponds with Module M, or 0 if an object is not available.
45 /// The pointer returned by this function is not suitable for loading because
46 /// the memory is read-only and owned by the ObjectCache. To retrieve an
47 /// owning pointer to a MemoryBuffer (which is suitable for calling
48 /// RuntimeDyld::loadObject() with) use getObjectCopy() instead.
49 virtual const MemoryBuffer* getObject(const Module* M) = 0;