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| author | Andreas Klebinger <klebinger.andreas@gmx.at> | 2020-06-22 16:39:59 +0200 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2020-07-15 16:41:03 -0400 |
| commit | bd6b8ec1e775441fc943702e93d48ce75f155e9e (patch) | |
| tree | e9bf19b84edeedecf8b09da97631bc77f5ec2cec | |
| parent | d3f94368cc27e124c07f9c3f90e3f9563a7fc55d (diff) | |
| download | haskell-bd6b8ec1e775441fc943702e93d48ce75f155e9e.tar.gz | |
winio: add comment stating failure behaviour for getUniqueFileInfo.
| -rw-r--r-- | libraries/base/GHC/IO/Windows/Handle.hsc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libraries/base/GHC/IO/Windows/Handle.hsc b/libraries/base/GHC/IO/Windows/Handle.hsc index 4d7e3e393f..7b39691181 100644 --- a/libraries/base/GHC/IO/Windows/Handle.hsc +++ b/libraries/base/GHC/IO/Windows/Handle.hsc @@ -951,9 +951,13 @@ foreign import ccall unsafe "lockFile" foreign import ccall unsafe "unlockFile" unlockFile :: CUIntPtr -> IO CInt +-- | Returns -1 on error. Otherwise writes two values representing +-- the file into the given ptrs. foreign import ccall unsafe "get_unique_file_info_hwnd" c_getUniqueFileInfo :: HANDLE -> Ptr Word64 -> Ptr Word64 -> IO () +-- | getUniqueFileInfo assumes the C call to getUniqueFileInfo +-- succeeds. getUniqueFileInfo :: RawHandle a => a -> IO (Word64, Word64) getUniqueFileInfo handle = do with 0 $ \devptr -> do |