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|
{-# LANGUAGE RecordWildCards #-}
module System.Log.FastLogger.Write (
writeLogStr
, writeBigLogStr
, Loggers(..)
) where
import Foreign.Marshal.Alloc (allocaBytes)
import Foreign.Ptr (plusPtr)
import System.Log.FastLogger.FileIO
import System.Log.FastLogger.IO
import System.Log.FastLogger.Imports
import System.Log.FastLogger.LogStr
----------------------------------------------------------------
-- | Writting 'LogStr' using a buffer in blocking mode.
-- The size of 'LogStr' must be smaller or equal to
-- the size of buffer.
writeLogStr :: Buffer -> IORef FD -> LogStr -> IO ()
writeLogStr buf fdref (LogStr len builder) =
toBufIOWith buf len (write fdref) builder
-- | Writting 'LogStr' using a temporary buffer.
writeBigLogStr :: IORef FD -> LogStr -> IO ()
writeBigLogStr fdref (LogStr len builder) = allocaBytes len $ \buf ->
toBufIOWith buf len (write fdref) builder
write :: IORef FD -> Buffer -> Int -> IO ()
write fdref buf len' = loop buf (fromIntegral len')
where
loop bf len = do
written <- writeRawBufferPtr2FD fdref bf len
when (0 <= written && written < len) $
loop (bf `plusPtr` fromIntegral written) (len - written)
----------------------------------------------------------------
-- | A class for internal loggers.
class Loggers a where
stopLoggers :: a -> IO ()
pushLog :: a -> LogStr -> IO ()
flushAllLog :: a -> IO ()
|
