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68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
//===-- JIT.h - Abstract Execution Engine Interface -------------*- 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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//
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// Common functionality for JITEventListener implementations
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//
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//===----------------------------------------------------------------------===//
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#ifndef EVENT_LISTENER_COMMON_H
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#define EVENT_LISTENER_COMMON_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/DebugInfo.h"
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#include "llvm/IR/Metadata.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/ValueHandle.h"
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namespace llvm {
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namespace jitprofiling {
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class FilenameCache {
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// Holds the filename of each Scope, so that we can pass a null-terminated
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// string into oprofile. Use an AssertingVH rather than a ValueMap because we
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// shouldn't be modifying any MDNodes while this map is alive.
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DenseMap<AssertingVH<MDNode>, std::string> Filenames;
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DenseMap<AssertingVH<MDNode>, std::string> Paths;
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public:
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const char *getFilename(MDNode *Scope) {
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std::string &Filename = Filenames[Scope];
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if (Filename.empty()) {
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DIScope DIScope(Scope);
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Filename = DIScope.getFilename();
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}
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return Filename.c_str();
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}
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const char *getFullPath(MDNode *Scope) {
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std::string &P = Paths[Scope];
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if (P.empty()) {
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DIScope DIScope(Scope);
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StringRef DirName = DIScope.getDirectory();
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StringRef FileName = DIScope.getFilename();
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SmallString<256> FullPath;
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if (DirName != "." && DirName != "") {
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FullPath = DirName;
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}
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if (FileName != "") {
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sys::path::append(FullPath, FileName);
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}
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P = FullPath.str();
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}
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return P.c_str();
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}
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};
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} // namespace jitprofiling
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} // namespace llvm
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#endif //EVENT_LISTENER_COMMON_H
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