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added system.runOnThreadCreationHandlers for initialization of thread local storage for the main thread

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Araq 2017-01-20 20:31:59 +01:00
commit 572fd067cf
1 changed files with 9 additions and 0 deletions
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9
lib/system/threads.nim
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@ -327,6 +327,8 @@ proc onThreadCreation*(handler: proc () {.nimcall, gcsafe.}) =
## {.gcsafe.}: ## {.gcsafe.}:
## deepCopy(perThread, someGlobal) ## deepCopy(perThread, someGlobal)
## ##
## onThreadCreation(setPerThread)
##
## **Note**: The registration is currently not threadsafe! Better ## **Note**: The registration is currently not threadsafe! Better
## call ``onThreadCreation`` before any thread started its work! ## call ``onThreadCreation`` before any thread started its work!
threadCreationHandlers[countThreadCreationHandlers] = handler threadCreationHandlers[countThreadCreationHandlers] = handler
@ -336,6 +338,13 @@ template beforeThreadRuns() =
for i in 0..countThreadCreationHandlers-1: for i in 0..countThreadCreationHandlers-1:
threadCreationHandlers[i]() threadCreationHandlers[i]()
proc runOnThreadCreationHandlers*() =
## This runs every registered ``onThreadCreation`` handler and is usually
## used to initialize thread local storage for the main thread. Since the
## main thread is **not** created via ``createThread`` it doesn't run the
## handlers automatically.
beforeThreadRuns()
when not defined(boehmgc) and not hasSharedHeap and not defined(gogc) and not defined(gcstack): when not defined(boehmgc) and not hasSharedHeap and not defined(gogc) and not defined(gcstack):
proc deallocOsPages() proc deallocOsPages()