[io] add async IO feature flag to RRawFile

hageboeck · Jul 3, 2020 · 2d799d2 · 2d799d2
1 parent fca6716
commit 2d799d2
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Showing 3 changed files with 7 additions and 1 deletion.
diff --git a/io/io/inc/ROOT/RRawFile.hxx b/io/io/inc/ROOT/RRawFile.hxx
@@ -49,6 +49,8 @@ public:
    static constexpr int kFeatureHasSize = 0x01;
    /// Map() and Unmap() are implemented
    static constexpr int kFeatureHasMmap = 0x02;
+   /// File supports async IO
+   static constexpr int kFeatureHasAsyncIo = 0x04;
 
    /// On construction, an ROptions parameter can customize the RRawFile behavior
    struct ROptions {

diff --git a/io/io/inc/ROOT/RRawFileUnix.hxx b/io/io/inc/ROOT/RRawFileUnix.hxx
@@ -43,7 +43,7 @@ public:
    RRawFileUnix(std::string_view url, RRawFile::ROptions options);
    ~RRawFileUnix();
    std::unique_ptr<RRawFile> Clone() const final;
-   int GetFeatures() const final { return kFeatureHasSize | kFeatureHasMmap; }
+   int GetFeatures() const final;
 };
 
 } // namespace Internal

diff --git a/io/io/src/RRawFileUnix.cxx b/io/io/src/RRawFileUnix.cxx
@@ -45,6 +45,10 @@ std::unique_ptr<ROOT::Internal::RRawFile> ROOT::Internal::RRawFileUnix::Clone()
    return std::make_unique<RRawFileUnix>(fUrl, fOptions);
 }
 
+int ROOT::Internal::RRawFileUnix::GetFeatures() const {
+   return kFeatureHasSize | kFeatureHasMmap;
+}
+
 std::uint64_t ROOT::Internal::RRawFileUnix::GetSizeImpl()
 {
    struct stat info;