GPU compilation.

Author: trivialfis

src/common/io.cc

@@ -203,13 +203,6 @@ auto SystemErrorMsg() {
 }
 }  // anonymous namespace
 
-PrivateMmapStream::PrivateMmapStream(std::string path, bool read_only, std::size_t offset,
-                                     std::size_t length)
-    : MemoryFixSizeBuffer{} {
-  this->p_buffer_ = Open(std::move(path), read_only, offset, length);
-  this->buffer_size_ = length;
-}
-
 char* PrivateMmapStream::Open(std::string path, bool read_only, std::size_t offset,
                               std::size_t length) {
 #if defined(_MSC_VER)
@@ -257,6 +250,13 @@ char* PrivateMmapStream::Open(std::string path, bool read_only, std::size_t offs
   return ptr;
 }
 
+PrivateMmapStream::PrivateMmapStream(std::string path, bool read_only, std::size_t offset,
+                                     std::size_t length)
+    : MemoryFixSizeBuffer{}, handle_{nullptr} {
+  this->p_buffer_ = Open(std::move(path), read_only, offset, length);
+  this->buffer_size_ = length;
+}
+
 PrivateMmapStream::~PrivateMmapStream() {
   CHECK(handle_);
 #if defined(_MSC_VER)

src/common/io.h

@@ -136,8 +136,7 @@ std::size_t GetPageSize();
  */
 class PrivateMmapStream : public MemoryFixSizeBuffer {
   struct MMAPFile;
-
-  std::unique_ptr<MMAPFile> handle_{nullptr};
+  std::unique_ptr<MMAPFile> handle_;
 
   char* Open(std::string path, bool read_only, std::size_t offset, std::size_t length);