mirror of
https://github.com/revng/revng
synced 2026-06-21 14:07:57 +00:00
Pietro Fezzardi
b092c4f505
This library provides a thin locking wrapper around clang::tooling invocations. It should be used instead of performing direct clang::tooling invocations by all programs that use revng-c and may run more than one ClangTool concurrently. This is necessary because clang::tooling internally uses llvm's cl::opt for parsing command line options. cl::opt uses a global variable for the parser under the hood so parsing two command lines concurrently is not safe. Similarly, cl::opt typically uses global variables to hold options, so it is not safe to execute a ClangTool concurrently to another tool that is parsing a new set of options, because there might be race conditions between threads reading and writing the same options at the same time. The new library introduces a thin locking layer so that the end-user does not need to know or worry about these details.
40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
//
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// Copyright rev.ng Srls. See LICENSE.md for details.
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//
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#include <utility>
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#include "clang/Tooling/Tooling.h"
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#include "revng-c/ThreadSafeClangTooling/ThreadSafeClangTooling.h"
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namespace revng {
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namespace c {
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const std::vector<std::string> ClangToolDefaultArgs{ // C language
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"-xc",
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// C11 dialect
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"-std=c11"
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};
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} // namespace c
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} // namespace revng
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std::mutex ClangToolingMutex;
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bool runThreadSafeClangTool(std::unique_ptr<clang::FrontendAction> ToolAction,
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const std::string &Code,
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const std::vector<std::string> &Args) {
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std::scoped_lock ClangToolingGuard{ ClangToolingMutex };
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return clang::tooling::runToolOnCodeWithArgs(std::move(ToolAction),
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Code,
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Args);
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}
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bool runThreadSafeClangTool(std::unique_ptr<clang::FrontendAction> ToolAction,
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const std::string &Code) {
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return runThreadSafeClangTool(std::move(ToolAction),
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Code,
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revng::c::ClangToolDefaultArgs);
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}
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