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Add MemoryBuffer::getBufferKind() to report whether a memory buffer uses malloc'ed or mmap'ed memory. This is for performance analysis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130432 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -119,6 +119,21 @@ public:
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static error_code getFileOrSTDIN(const char *Filename,
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OwningPtr<MemoryBuffer> &result,
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int64_t FileSize = -1);
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//===--------------------------------------------------------------------===//
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// Provided for performance analysis.
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//===--------------------------------------------------------------------===//
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/// The kind of memory backing used to support the MemoryBuffer.
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enum BufferKind {
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MemoryBuffer_Malloc,
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MemoryBuffer_MMap
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};
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/// Return information on the memory mechanism used to support the
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/// MemoryBuffer.
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virtual BufferKind getBufferKind() const = 0;
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};
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} // end namespace llvm
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@ -86,6 +86,10 @@ public:
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// The name is stored after the class itself.
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return reinterpret_cast<const char*>(this + 1);
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}
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virtual BufferKind getBufferKind() const {
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return MemoryBuffer_Malloc;
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}
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};
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}
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@ -191,6 +195,10 @@ public:
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sys::Path::UnMapFilePages(reinterpret_cast<const char*>(RealStart),
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RealSize);
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}
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virtual BufferKind getBufferKind() const {
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return MemoryBuffer_MMap;
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}
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};
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}
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