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{-# LANGUAGE Trustworthy #-}
{-# LANGUAGE NoImplicitPrelude #-}
-- | @since 4.7.0.0
module GHC.Profiling ( -- * Cost Centre Profiling
startProfTimer
, stopProfTimer
-- * Heap Profiling
, startHeapProfTimer
, stopHeapProfTimer
, requestHeapCensus
)where
import GHC.Base
-- | Stop attributing ticks to cost centres. Allocations will still be
-- attributed.
--
-- @since 4.7.0.0
foreign import ccall stopProfTimer :: IO ()
-- | Start attributing ticks to cost centres. This is called by the RTS on
-- startup.
--
-- @since 4.7.0.0
foreign import ccall startProfTimer :: IO ()
-- | Request a heap census on the next context switch. The census can be
-- requested whether or not the heap profiling timer is running.
-- Note: This won't do anything unless you also specify a profiling mode on the
-- command line using the normal RTS options.
--
-- @since 4.16.0.0
foreign import ccall requestHeapCensus :: IO ()
-- | Start heap profiling. This is called normally by the RTS on start-up,
-- but can be disabled using the rts flag `--no-automatic-heap-samples`
-- Note: This won't do anything unless you also specify a profiling mode on the
-- command line using the normal RTS options.
--
-- @since 4.16.0.0
foreign import ccall startHeapProfTimer :: IO ()
-- | Stop heap profiling.
-- Note: This won't do anything unless you also specify a profiling mode on the
-- command line using the normal RTS options.
--
-- @since 4.16.0.0
foreign import ccall stopHeapProfTimer :: IO ()
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