diff options
| author | Mamy Ratsimbazafy <mratsim@users.noreply.github.com> | 2018-10-25 18:09:35 +0200 |
|---|---|---|
| committer | Andreas Rumpf <rumpf_a@web.de> | 2018-10-25 18:09:35 +0200 |
| commit | 5b977627870d925e79dca1dd5cee615015314b5d (patch) | |
| tree | 32fbf5d09c2568b389cab979c684049239532aac /lib/system.nim | |
| parent | c844a9169ccb445cc16584db4f434074614b357e (diff) | |
| download | Nim-5b977627870d925e79dca1dd5cee615015314b5d.tar.gz | |
Openmp parallel iterator improvements (#9493)
* More flexibility in OpenMP pragma * Use static to constrain to compile-time annotation string * Update changelog with OpenMP change
Diffstat (limited to 'lib/system.nim')
| -rw-r--r-- | lib/system.nim | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/system.nim b/lib/system.nim index 05ffa63b4..f852a0aed 100644 --- a/lib/system.nim +++ b/lib/system.nim @@ -2186,10 +2186,14 @@ else: inc(res) -iterator `||`*[S, T](a: S, b: T, annotation=""): T {. +iterator `||`*[S, T](a: S, b: T, annotation: static string = "parallel for"): T {. inline, magic: "OmpParFor", sideEffect.} = - ## parallel loop iterator. Same as `..` but the loop may run in parallel. + ## OpenMP parallel loop iterator. Same as `..` but the loop may run in parallel. ## `annotation` is an additional annotation for the code generator to use. + ## The default annotation is `parallel for`. + ## Please refer to the `OpenMP Syntax Reference<https://www.openmp.org/wp-content/uploads/OpenMP-4.5-1115-CPP-web.pdf>`_ + ## for further information. + ## ## Note that the compiler maps that to ## the ``#pragma omp parallel for`` construct of `OpenMP`:idx: and as ## such isn't aware of the parallelism in your code! Be careful! Later |