make all caches behave the same #244
There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,148 @@ | ||
| const GLOBAL_CACHES = Any[] | ||
| function empty_globalcaches!() | ||
| foreach(empty!, GLOBAL_CACHES) | ||
| return nothing | ||
| end | ||
|
|
||
| abstract type CacheStyle end | ||
| struct NoCache <: CacheStyle end | ||
| struct TaskLocalCache{D<:AbstractDict} <: CacheStyle end | ||
| struct GlobalLRUCache <: CacheStyle end | ||
|
|
||
| const DEFAULT_GLOBALCACHE_SIZE = Ref(10^5) | ||
lkdvos marked this conversation as resolved.
Outdated
Show resolved
Hide resolved
|
||
|
|
||
| function CacheStyle(args...) | ||
| return GlobalLRUCache() | ||
| end | ||
|
|
||
| macro cached(ex) | ||
| Meta.isexpr(ex, :function) || | ||
| error("cached macro can only be used on function definitions") | ||
| fcall = ex.args[1] | ||
| if Meta.isexpr(fcall, :where) | ||
| hasparams = true | ||
| params = fcall.args[2:end] | ||
| fcall = fcall.args[1] | ||
| else | ||
| hasparams = false | ||
| end | ||
| if Meta.isexpr(fcall, :(::)) | ||
| typed = true | ||
| typeex = fcall.args[2] | ||
| fcall = fcall.args[1] | ||
| else | ||
| typed = false | ||
| end | ||
| Meta.isexpr(fcall, :call) || | ||
| error("cached macro can only be used on function definitions") | ||
| fname = fcall.args[1] | ||
| fargs = fcall.args[2:end] | ||
| fargnames = map(fargs) do arg | ||
| if Meta.isexpr(arg, :(::)) | ||
| return arg.args[1] | ||
| else | ||
| return arg | ||
| end | ||
| end | ||
| _fbody = ex.args[2] | ||
|
|
||
| # actual implenetation, with underscore name | ||
| _fname = Symbol(:_, fname) | ||
| _fcall = Expr(:call, _fname, fargs...) | ||
| if hasparams | ||
| _fcall = Expr(:where, _fcall, params...) | ||
| end | ||
| _fex = Expr(:function, _fcall, _fbody) | ||
|
|
||
| # implementation that chooses the cache style | ||
| newfcall = fcall | ||
| if hasparams | ||
| newfcall = Expr(:where, newfcall, params...) | ||
| end | ||
| cachestylevar = gensym(:cachestyle) | ||
| cachestyleex = Expr(:(=), cachestylevar, | ||
| Expr(:call, :CacheStyle, fname, fargnames...)) | ||
| newfbody = Expr(:block, | ||
| cachestyleex, | ||
| Expr(:call, fname, fargnames..., cachestylevar)) | ||
| newfex = Expr(:function, newfcall, newfbody) | ||
|
|
||
| # nocache implementation | ||
| fnocachecall = Expr(:call, fname, fargs..., :(::NoCache)) | ||
| if hasparams | ||
| fnocachecall = Expr(:where, fnocachecall, params...) | ||
| end | ||
| fnocachebody = Expr(:call, _fname, fargnames...) | ||
| if typed | ||
| T = gensym(:T) | ||
| fnocachebody = Expr(:block, Expr(:(=), T, typeex), Expr(:(::), fnocachebody, T)) | ||
| end | ||
| fnocacheex = Expr(:function, fnocachecall, fnocachebody) | ||
|
|
||
| # tasklocal cache implementation | ||
| Dvar = gensym(:D) | ||
| flocalcachecall = Expr(:call, fname, fargs..., :(::TaskLocalCache{$Dvar})) | ||
| if hasparams | ||
| flocalcachecall = Expr(:where, flocalcachecall, params..., Dvar) | ||
| else | ||
| flocalcachecall = Expr(:where, flocalcachecall, Dvar) | ||
| end | ||
| localcachename = Symbol(:_tasklocal_, fname, :_cache) | ||
| cachevar = gensym(:cache) | ||
| getlocalcacheex = :($cachevar::$Dvar = get!(task_local_storage(), $localcachename) do | ||
| return $Dvar() | ||
| end) | ||
| valvar = gensym(:val) | ||
| if length(fargnames) == 1 | ||
| key = fargnames[1] | ||
| else | ||
| key = Expr(:tuple, fargnames...) | ||
| end | ||
| getvalex = :(get!($cachevar, $key) do | ||
| return $_fname($(fargnames...)) | ||
| end) | ||
| if typed | ||
| T = gensym(:T) | ||
| flocalcachebody = Expr(:block, | ||
| getlocalcacheex, | ||
| Expr(:(=), T, typeex), | ||
| Expr(:(=), Expr(:(::), valvar, T), getvalex), | ||
| Expr(:return, valvar)) | ||
| else | ||
| flocalcachebody = Expr(:block, | ||
| getlocalcacheex, | ||
| Expr(:(=), valvar, getvalex), | ||
| Expr(:return, valvar)) | ||
| end | ||
| flocalcacheex = Expr(:function, flocalcachecall, flocalcachebody) | ||
|
|
||
| # # global cache implementation | ||
| fglobalcachecall = Expr(:call, fname, fargs..., :(::GlobalLRUCache)) | ||
| if hasparams | ||
| fglobalcachecall = Expr(:where, fglobalcachecall, params...) | ||
| end | ||
| globalcachename = Symbol(:GLOBAL_, uppercase(string(fname)), :_CACHE) | ||
| getglobalcachex = Expr(:(=), cachevar, globalcachename) | ||
| if typed | ||
| T = gensym(:T) | ||
| fglobalcachebody = Expr(:block, | ||
| getglobalcachex, | ||
| Expr(:(=), T, typeex), | ||
| Expr(:(=), Expr(:(::), valvar, T), getvalex), | ||
| Expr(:return, valvar)) | ||
| else | ||
| fglobalcachebody = Expr(:block, | ||
| getglobalcachex, | ||
| Expr(:(=), valvar, getvalex), | ||
| Expr(:return, valvar)) | ||
| end | ||
| fglobalcacheex = Expr(:function, fglobalcachecall, fglobalcachebody) | ||
| fglobalcachedef = Expr(:const, | ||
| Expr(:(=), globalcachename, | ||
| :(LRU{Any,Any}(; maxsize=DEFAULT_GLOBALCACHE_SIZE[])))) | ||
| fglobalcacheregister = Expr(:call, :push!, :GLOBAL_CACHES, globalcachename) | ||
|
|
||
| # # total expression | ||
| return esc(Expr(:block, _fex, newfex, fnocacheex, flocalcacheex, | ||
| fglobalcachedef, fglobalcacheregister, fglobalcacheex)) | ||
| end | ||
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.
Oops, something went wrong.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Uh oh!
There was an error while loading. Please reload this page.