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| author | Niklas Hambüchen <mail@nh2.me> | 2017-09-19 15:09:29 -0400 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2017-09-19 15:58:45 -0400 |
| commit | 28a115e5e2c3c19b860545f1fcde4317bac3ee2a (patch) | |
| tree | 35b97efde537ab5d79bb9abe4cf71c7a9c2d8961 /rts/RtsSymbols.c | |
| parent | 7c7914d02a7ff189aba2f4feca31366fb4ab2664 (diff) | |
| download | haskell-28a115e5e2c3c19b860545f1fcde4317bac3ee2a.tar.gz | |
base: fdReady(): Improve accuracy and simplify code.
This is done by reusing the existing cross-platform
`getProcessElapsedTime()` function, which already provides nanosecond
monotonic clocks, and fallback for platforms that don't have those.
To do this, `getProcessElapsedTime()` had to be moved from a private RTS
symbol into the public interface.
Accuracy is improved in 2 ways:
* Use of the monotonic clock where available
* Measuring the total time spent waiting instead of a sum
of intervals (between which there are small gaps)
Reviewers: bgamari, austin, hvr, erikd, simonmar
Reviewed By: bgamari
Subscribers: rwbarton, thomie
Differential Revision: https://phabricator.haskell.org/D3953
Diffstat (limited to 'rts/RtsSymbols.c')
| -rw-r--r-- | rts/RtsSymbols.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/rts/RtsSymbols.c b/rts/RtsSymbols.c index fb9be7faa0..a696f44476 100644 --- a/rts/RtsSymbols.c +++ b/rts/RtsSymbols.c @@ -605,6 +605,7 @@ SymI_HasProto(getFullProgArgv) \ SymI_HasProto(setFullProgArgv) \ SymI_HasProto(freeFullProgArgv) \ + SymI_HasProto(getProcessElapsedTime) \ SymI_HasProto(getStablePtr) \ SymI_HasProto(foreignExportStablePtr) \ SymI_HasProto(hs_init) \ |