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