diff options
Diffstat (limited to 'include/llvm/ExecutionEngine/ObjectCache.h')
-rw-r--r-- | include/llvm/ExecutionEngine/ObjectCache.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/include/llvm/ExecutionEngine/ObjectCache.h b/include/llvm/ExecutionEngine/ObjectCache.h new file mode 100644 index 0000000..0bee861 --- /dev/null +++ b/include/llvm/ExecutionEngine/ObjectCache.h @@ -0,0 +1,54 @@ +//===-- 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 |