forked from OSchip/llvm-project
43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
//===--- FSProvider.h - VFS provider for ClangdServer ------------*- 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_CLANG_TOOLS_EXTRA_CLANGD_FSPROVIDER_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_FSPROVIDER_H
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#include "clang/Basic/VirtualFileSystem.h"
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#include "llvm/ADT/IntrusiveRefCntPtr.h"
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namespace clang {
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namespace clangd {
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// Wrapper for vfs::FileSystem for use in multithreaded programs like clangd.
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// As FileSystem is not threadsafe, concurrent threads must each obtain one.
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class FileSystemProvider {
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public:
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virtual ~FileSystemProvider() = default;
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/// Called by ClangdServer to obtain a vfs::FileSystem to be used for parsing.
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/// Context::current() will be the context passed to the clang entrypoint,
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/// such as addDocument(), and will also be propagated to result callbacks.
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/// Embedders may use this to isolate filesystem accesses.
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virtual IntrusiveRefCntPtr<vfs::FileSystem> getFileSystem() = 0;
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};
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class RealFileSystemProvider : public FileSystemProvider {
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public:
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// FIXME: returns the single real FS instance, which is not threadsafe.
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IntrusiveRefCntPtr<vfs::FileSystem> getFileSystem() override {
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return vfs::getRealFileSystem();
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}
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};
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} // namespace clangd
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} // namespace clang
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#endif
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