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548f2b6e8f
Owning the buffer is somewhat inflexible. Some Binaries have sub Binaries (like Archive) and we had to create dummy buffers just to handle that. It is also a bad fit for IRObjectFile where the Module wants to own the buffer too. Keeping this ownership would make supporting IR inside native objects particularly painful. This patch focuses in lib/Object. If something elsewhere used to own an Binary, now it also owns a MemoryBuffer. This patch introduces a few new types. * MemoryBufferRef. This is just a pair of StringRefs for the data and name. This is to MemoryBuffer as StringRef is to std::string. * OwningBinary. A combination of Binary and a MemoryBuffer. This is needed for convenience functions that take a filename and return both the buffer and the Binary using that buffer. The C api now uses OwningBinary to avoid any change in semantics. I will start a new thread to see if we want to change it and how. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216002 91177308-0d34-0410-b5e6-96231b3b80d8
41 lines
1.2 KiB
C++
41 lines
1.2 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_EXECUTIONENGINE_OBJECTCACHE_H
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#define LLVM_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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virtual void anchor();
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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, MemoryBufferRef Obj) = 0;
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/// Returns a pointer to a newly allocated MemoryBuffer that contains the
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/// object which corresponds with Module M, or 0 if an object is not
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/// available.
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virtual std::unique_ptr<MemoryBuffer> getObject(const Module* M) = 0;
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};
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}
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#endif
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