[C++11] Add overloads for externally used OwningPtr functions.

This will allow external callers of these functions to switch over time
rather than forcing a breaking change all a once. These particular
functions were determined by building clang/lld/lldb.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202959 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/MC/MCDisassembler.h

@@ -123,6 +123,11 @@ public:
                                    void *DisInfo,
                                    MCContext *Ctx,
                                    OwningPtr<MCRelocationInfo> &RelInfo);
+  void setupForSymbolicDisassembly(LLVMOpInfoCallback GetOpInfo,
+                                   LLVMSymbolLookupCallback SymbolLookUp,
+                                   void *DisInfo,
+                                   MCContext *Ctx,
+                                   std::unique_ptr<MCRelocationInfo> &RelInfo);
 
   LLVMOpInfoCallback getLLVMOpInfoCallback() const { return GetOpInfo; }
   LLVMSymbolLookupCallback getLLVMSymbolLookupCallback() const {

include/llvm/Object/Archive.h

@@ -91,9 +91,13 @@ public:
 
     error_code getMemoryBuffer(OwningPtr<MemoryBuffer> &Result,
                                bool FullPath = false) const;
+    error_code getMemoryBuffer(std::unique_ptr<MemoryBuffer> &Result,
+                               bool FullPath = false) const;
 
     error_code getAsBinary(OwningPtr<Binary> &Result,
                            LLVMContext *Context = 0) const;
+    error_code getAsBinary(std::unique_ptr<Binary> &Result,
+                           LLVMContext *Context = 0) const;
   };
 
   class child_iterator {

include/llvm/Support/FileOutputBuffer.h

@@ -43,6 +43,9 @@ public:
   static error_code create(StringRef FilePath, size_t Size,
                            OwningPtr<FileOutputBuffer> &Result,
                            unsigned Flags = 0);
+  static error_code create(StringRef FilePath, size_t Size,
+                           std::unique_ptr<FileOutputBuffer> &Result,
+                           unsigned Flags = 0);
 
   /// Returns a pointer to the start of the buffer.
   uint8_t *getBufferStart() {
@@ -83,7 +86,7 @@ private:
   FileOutputBuffer(llvm::sys::fs::mapped_file_region *R,
                    StringRef Path, StringRef TempPath);
 
-  OwningPtr<llvm::sys::fs::mapped_file_region> Region;
+  std::unique_ptr<llvm::sys::fs::mapped_file_region> Region;
   SmallString<128>    FinalPath;
   SmallString<128>    TempPath;
 };

include/llvm/Support/MemoryBuffer.h

@@ -19,6 +19,7 @@
 #include "llvm/Support/CBindingWrapping.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/DataTypes.h"
+#include <memory>
 
 namespace llvm {
 
@@ -66,7 +67,11 @@ public:
   /// MemoryBuffer if successful, otherwise returning null.  If FileSize is
   /// specified, this means that the client knows that the file exists and that
   /// it has the specified size.
-  static error_code getFile(Twine Filename, OwningPtr<MemoryBuffer> &result,
+  static error_code getFile(Twine Filename, OwningPtr<MemoryBuffer> &Result,
+                            int64_t FileSize = -1,
+                            bool RequiresNullTerminator = true);
+  static error_code getFile(Twine Filename,
+                            std::unique_ptr<MemoryBuffer> &Result,
                             int64_t FileSize = -1,
                             bool RequiresNullTerminator = true);
 
@@ -76,6 +81,9 @@ public:
   static error_code getOpenFileSlice(int FD, const char *Filename,
                                      OwningPtr<MemoryBuffer> &Result,
                                      uint64_t MapSize, int64_t Offset);
+  static error_code getOpenFileSlice(int FD, const char *Filename,
+                                     std::unique_ptr<MemoryBuffer> &Result,
+                                     uint64_t MapSize, int64_t Offset);
 
   /// Given an already-open file descriptor, read the file and return a
   /// MemoryBuffer.
@@ -83,6 +91,10 @@ public:
                                 OwningPtr<MemoryBuffer> &Result,
                                 uint64_t FileSize,
                                 bool RequiresNullTerminator = true);
+  static error_code getOpenFile(int FD, const char *Filename,
+                                std::unique_ptr<MemoryBuffer> &Result,
+                                uint64_t FileSize,
+                                bool RequiresNullTerminator = true);
 
   /// getMemBuffer - Open the specified memory range as a MemoryBuffer.  Note
   /// that InputData must be null terminated if RequiresNullTerminator is true.
@@ -111,14 +123,18 @@ public:
 
   /// getSTDIN - Read all of stdin into a file buffer, and return it.
   /// If an error occurs, this returns null and sets ec.
-  static error_code getSTDIN(OwningPtr<MemoryBuffer> &result);
+  static error_code getSTDIN(OwningPtr<MemoryBuffer> &Result);
+  static error_code getSTDIN(std::unique_ptr<MemoryBuffer> &Result);
 
 
   /// getFileOrSTDIN - Open the specified file as a MemoryBuffer, or open stdin
   /// if the Filename is "-".  If an error occurs, this returns null and sets
   /// ec.
   static error_code getFileOrSTDIN(StringRef Filename,
-                                   OwningPtr<MemoryBuffer> &result,
+                                   OwningPtr<MemoryBuffer> &Result,
+                                   int64_t FileSize = -1);
+  static error_code getFileOrSTDIN(StringRef Filename,
+                                   std::unique_ptr<MemoryBuffer> &Result,
                                    int64_t FileSize = -1);
 
   //===--------------------------------------------------------------------===//

lib/MC/MCDisassembler.cpp

@@ -33,6 +33,18 @@ MCDisassembler::setupForSymbolicDisassembly(
                                               SymbolLookUp, DisInfo));
 }
 
+void
+MCDisassembler::setupForSymbolicDisassembly(
+    LLVMOpInfoCallback GetOpInfo,
+    LLVMSymbolLookupCallback SymbolLookUp,
+    void *DisInfo,
+    MCContext *Ctx,
+    std::unique_ptr<MCRelocationInfo> &RelInfo) {
+  OwningPtr<MCRelocationInfo> MCRI;
+  setupForSymbolicDisassembly(GetOpInfo, SymbolLookUp, DisInfo, Ctx, MCRI);
+  RelInfo = MCRI.take_unique();
+}
+
 bool MCDisassembler::tryAddingSymbolicOperand(MCInst &Inst, int64_t Value,
                                               uint64_t Address, bool IsBranch,
                                               uint64_t Offset,

lib/Object/Archive.cpp

@@ -13,6 +13,7 @@
 
 #include "llvm/Object/Archive.h"
 #include "llvm/ADT/APInt.h"
+#include "llvm/ADT/OwningPtr.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/Endian.h"
@@ -168,7 +169,7 @@ error_code Archive::Child::getName(StringRef &Result) const {
   return object_error::success;
 }
 
-error_code Archive::Child::getMemoryBuffer(OwningPtr<MemoryBuffer> &Result,
+error_code Archive::Child::getMemoryBuffer(std::unique_ptr<MemoryBuffer> &Result,
                                            bool FullPath) const {
   StringRef Name;
   if (error_code ec = getName(Name))
@@ -182,25 +183,41 @@ error_code Archive::Child::getMemoryBuffer(OwningPtr<MemoryBuffer> &Result,
   return error_code::success();
 }
 
-error_code Archive::Child::getAsBinary(OwningPtr<Binary> &Result,
+error_code Archive::Child::getMemoryBuffer(OwningPtr<MemoryBuffer> &Result,
+                                           bool FullPath) const {
+  std::unique_ptr<MemoryBuffer> MB;
+  error_code ec = getMemoryBuffer(MB, FullPath);
+  Result = std::move(MB);
+  return ec;
+}
+
+error_code Archive::Child::getAsBinary(std::unique_ptr<Binary> &Result,
                                        LLVMContext *Context) const {
-  OwningPtr<Binary> ret;
-  OwningPtr<MemoryBuffer> Buff;
+  std::unique_ptr<Binary> ret;
+  std::unique_ptr<MemoryBuffer> Buff;
   if (error_code ec = getMemoryBuffer(Buff))
     return ec;
-  ErrorOr<Binary *> BinaryOrErr = createBinary(Buff.take(), Context);
+  ErrorOr<Binary *> BinaryOrErr = createBinary(Buff.release(), Context);
   if (error_code EC = BinaryOrErr.getError())
     return EC;
   Result.reset(BinaryOrErr.get());
   return object_error::success;
 }
 
+error_code Archive::Child::getAsBinary(OwningPtr<Binary> &Result,
+                                       LLVMContext *Context) const {
+  std::unique_ptr<Binary> B;
+  error_code ec = getAsBinary(B, Context);
+  Result = std::move(B);
+  return ec;
+}
+
 ErrorOr<Archive*> Archive::create(MemoryBuffer *Source) {
   error_code EC;
-  OwningPtr<Archive> Ret(new Archive(Source, EC));
+  std::unique_ptr<Archive> Ret(new Archive(Source, EC));
   if (EC)
     return EC;
-  return Ret.take();
+  return Ret.release();
 }
 
 Archive::Archive(MemoryBuffer *source, error_code &ec)

lib/Support/FileOutputBuffer.cpp

@@ -33,7 +33,7 @@ FileOutputBuffer::~FileOutputBuffer() {
 
 error_code FileOutputBuffer::create(StringRef FilePath,
                                     size_t Size,
-                                    OwningPtr<FileOutputBuffer> &Result,
+                                    std::unique_ptr<FileOutputBuffer> &Result,
                                     unsigned Flags) {
   // If file already exists, it must be a regular file (to be mappable).
   sys::fs::file_status Stat;
@@ -73,18 +73,28 @@ error_code FileOutputBuffer::create(StringRef FilePath,
   if (EC)
     return EC;
 
-  OwningPtr<mapped_file_region> MappedFile(new mapped_file_region(
+  std::unique_ptr<mapped_file_region> MappedFile(new mapped_file_region(
       FD, true, mapped_file_region::readwrite, Size, 0, EC));
   if (EC)
     return EC;
 
   Result.reset(new FileOutputBuffer(MappedFile.get(), FilePath, TempFilePath));
   if (Result)
-    MappedFile.take();
+    MappedFile.release();
 
   return error_code::success();
 }
 
+error_code FileOutputBuffer::create(StringRef FilePath,
+                                    size_t Size,
+                                    OwningPtr<FileOutputBuffer> &Result,
+                                    unsigned Flags) {
+  std::unique_ptr<FileOutputBuffer> FOB;
+  error_code ec = create(FilePath, Size, FOB, Flags);
+  Result = std::move(FOB);
+  return ec;
+}
+
 error_code FileOutputBuffer::commit(int64_t NewSmallerSize) {
   // Unmap buffer, letting OS flush dirty pages to file on disk.
   Region.reset(0);

lib/Support/MemoryBuffer.cpp

@@ -166,13 +166,23 @@ MemoryBuffer *MemoryBuffer::getNewMemBuffer(size_t Size, StringRef BufferName) {
 /// in *ErrStr with a reason.  If stdin is empty, this API (unlike getSTDIN)
 /// returns an empty buffer.
 error_code MemoryBuffer::getFileOrSTDIN(StringRef Filename,
-                                        OwningPtr<MemoryBuffer> &result,
+                                        std::unique_ptr<MemoryBuffer> &Result,
                                         int64_t FileSize) {
   if (Filename == "-")
-    return getSTDIN(result);
-  return getFile(Filename, result, FileSize);
+    return getSTDIN(Result);
+  return getFile(Filename, Result, FileSize);
 }
 
+error_code MemoryBuffer::getFileOrSTDIN(StringRef Filename,
+                                        OwningPtr<MemoryBuffer> &Result,
+                                        int64_t FileSize) {
+  std::unique_ptr<MemoryBuffer> MB;
+  error_code ec = getFileOrSTDIN(Filename, MB, FileSize);
+  Result = std::move(MB);
+  return ec;
+}
+
+
 //===----------------------------------------------------------------------===//
 // MemoryBuffer::getFile implementation.
 //===----------------------------------------------------------------------===//
@@ -220,7 +230,7 @@ public:
 
 static error_code getMemoryBufferForStream(int FD,
                                            StringRef BufferName,
-                                           OwningPtr<MemoryBuffer> &result) {
+                                           std::unique_ptr<MemoryBuffer> &Result) {
   const ssize_t ChunkSize = 4096*4;
   SmallString<ChunkSize> Buffer;
   ssize_t ReadBytes;
@@ -235,39 +245,50 @@ static error_code getMemoryBufferForStream(int FD,
     Buffer.set_size(Buffer.size() + ReadBytes);
   } while (ReadBytes != 0);
 
-  result.reset(MemoryBuffer::getMemBufferCopy(Buffer, BufferName));
+  Result.reset(MemoryBuffer::getMemBufferCopy(Buffer, BufferName));
   return error_code::success();
 }
 
 static error_code getFileAux(const char *Filename,
-                             OwningPtr<MemoryBuffer> &result, int64_t FileSize,
+                             std::unique_ptr<MemoryBuffer> &Result,
+                             int64_t FileSize,
                              bool RequiresNullTerminator);
 
 error_code MemoryBuffer::getFile(Twine Filename,
-                                 OwningPtr<MemoryBuffer> &result,
+                                 std::unique_ptr<MemoryBuffer> &Result,
                                  int64_t FileSize,
                                  bool RequiresNullTerminator) {
   // Ensure the path is null terminated.
   SmallString<256> PathBuf;
   StringRef NullTerminatedName = Filename.toNullTerminatedStringRef(PathBuf);
-  return getFileAux(NullTerminatedName.data(), result, FileSize,
+  return getFileAux(NullTerminatedName.data(), Result, FileSize,
                     RequiresNullTerminator);
 }
 
+error_code MemoryBuffer::getFile(Twine Filename,
+                                 OwningPtr<MemoryBuffer> &Result,
+                                 int64_t FileSize,
+                                 bool RequiresNullTerminator) {
+  std::unique_ptr<MemoryBuffer> MB;
+  error_code ec = getFile(Filename, MB, FileSize, RequiresNullTerminator);
+  Result = std::move(MB);
+  return ec;
+}
+
 static error_code getOpenFileImpl(int FD, const char *Filename,
-                                  OwningPtr<MemoryBuffer> &Result,
+                                  std::unique_ptr<MemoryBuffer> &Result,
                                   uint64_t FileSize, uint64_t MapSize,
                                   int64_t Offset, bool RequiresNullTerminator);
 
 static error_code getFileAux(const char *Filename,
-                             OwningPtr<MemoryBuffer> &result, int64_t FileSize,
+                             std::unique_ptr<MemoryBuffer> &Result, int64_t FileSize,
                              bool RequiresNullTerminator) {
   int FD;
   error_code EC = sys::fs::openFileForRead(Filename, FD);
   if (EC)
     return EC;
 
-  error_code ret = getOpenFileImpl(FD, Filename, result, FileSize, FileSize, 0,
+  error_code ret = getOpenFileImpl(FD, Filename, Result, FileSize, FileSize, 0,
                                    RequiresNullTerminator);
   close(FD);
   return ret;
@@ -325,7 +346,7 @@ static bool shouldUseMmap(int FD,
 }
 
 static error_code getOpenFileImpl(int FD, const char *Filename,
-                                  OwningPtr<MemoryBuffer> &result,
+                                  std::unique_ptr<MemoryBuffer> &Result,
                                   uint64_t FileSize, uint64_t MapSize,
                                   int64_t Offset, bool RequiresNullTerminator) {
   static int PageSize = sys::process::get_self()->page_size();
@@ -346,7 +367,7 @@ static error_code getOpenFileImpl(int FD, const char *Filename,
       sys::fs::file_type Type = Status.type();
       if (Type != sys::fs::file_type::regular_file &&
           Type != sys::fs::file_type::block_file)
-        return getMemoryBufferForStream(FD, Filename, result);
+        return getMemoryBufferForStream(FD, Filename, Result);
 
       FileSize = Status.getSize();
     }
@@ -356,7 +377,7 @@ static error_code getOpenFileImpl(int FD, const char *Filename,
   if (shouldUseMmap(FD, FileSize, MapSize, Offset, RequiresNullTerminator,
                     PageSize)) {
     error_code EC;
-    result.reset(new (NamedBufferAlloc(Filename)) MemoryBufferMMapFile(
+    Result.reset(new (NamedBufferAlloc(Filename)) MemoryBufferMMapFile(
         RequiresNullTerminator, FD, MapSize, Offset, EC));
     if (!EC)
       return error_code::success();
@@ -369,7 +390,7 @@ static error_code getOpenFileImpl(int FD, const char *Filename,
     return make_error_code(errc::not_enough_memory);
   }
 
-  OwningPtr<MemoryBuffer> SB(Buf);
+  std::unique_ptr<MemoryBuffer> SB(Buf);
   char *BufPtr = const_cast<char*>(SB->getBufferStart());
 
   size_t BytesLeft = MapSize;
@@ -400,34 +421,61 @@ static error_code getOpenFileImpl(int FD, const char *Filename,
     BufPtr += NumRead;
   }
 
-  result.swap(SB);
+  Result.swap(SB);
   return error_code::success();
 }
 
 error_code MemoryBuffer::getOpenFile(int FD, const char *Filename,
-                                     OwningPtr<MemoryBuffer> &Result,
+                                     std::unique_ptr<MemoryBuffer> &Result,
                                      uint64_t FileSize,
                                      bool RequiresNullTerminator) {
   return getOpenFileImpl(FD, Filename, Result, FileSize, FileSize, 0,
                          RequiresNullTerminator);
 }
 
+error_code MemoryBuffer::getOpenFile(int FD, const char *Filename,
+                                     OwningPtr<MemoryBuffer> &Result,
+                                     uint64_t FileSize,
+                                     bool RequiresNullTerminator) {
+  std::unique_ptr<MemoryBuffer> MB;
+  error_code ec = getOpenFileImpl(FD, Filename, MB, FileSize, FileSize, 0,
+                                  RequiresNullTerminator);
+  Result = std::move(MB);
+  return ec;
+}
+
+error_code MemoryBuffer::getOpenFileSlice(int FD, const char *Filename,
+                                          std::unique_ptr<MemoryBuffer> &Result,
+                                          uint64_t MapSize, int64_t Offset) {
+  return getOpenFileImpl(FD, Filename, Result, -1, MapSize, Offset, false);
+}
+
 error_code MemoryBuffer::getOpenFileSlice(int FD, const char *Filename,
                                           OwningPtr<MemoryBuffer> &Result,
                                           uint64_t MapSize, int64_t Offset) {
-  return getOpenFileImpl(FD, Filename, Result, -1, MapSize, Offset, false);
+  std::unique_ptr<MemoryBuffer> MB;
+  error_code ec = getOpenFileImpl(FD, Filename, MB, -1, MapSize, Offset, false);
+  Result = std::move(MB);
+  return ec;
 }
 
 //===----------------------------------------------------------------------===//
 // MemoryBuffer::getSTDIN implementation.
 //===----------------------------------------------------------------------===//
 
-error_code MemoryBuffer::getSTDIN(OwningPtr<MemoryBuffer> &result) {
+error_code MemoryBuffer::getSTDIN(std::unique_ptr<MemoryBuffer> &Result) {
   // Read in all of the data from stdin, we cannot mmap stdin.
   //
   // FIXME: That isn't necessarily true, we should try to mmap stdin and
   // fallback if it fails.
   sys::ChangeStdinToBinary();
 
-  return getMemoryBufferForStream(0, "<stdin>", result);
+  return getMemoryBufferForStream(0, "<stdin>", Result);
+}
+
+error_code MemoryBuffer::getSTDIN(OwningPtr<MemoryBuffer> &Result) {
+  std::unique_ptr<MemoryBuffer> MB;
+  error_code ec = getSTDIN(MB);
+  Result = std::move(MB);
+  return ec;
 }

unittests/Support/MemoryBufferTest.cpp

@@ -78,7 +78,7 @@ TEST_F(MemoryBufferTest, NullTerminator4K) {
   }
   OF.close();
 
-  OwningPtr<MemoryBuffer> MB;
+  OwningBuffer MB;
   error_code EC = MemoryBuffer::getFile(TestPath.c_str(), MB);
   ASSERT_FALSE(EC);