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2d470c9afd
After some cleanups for stdlibs, then we should enable warningaserror
for all tests
(cherry picked from commit c0861142f8)
58 lines
1.5 KiB
Nim
58 lines
1.5 KiB
Nim
#
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#
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# Nim's Runtime Library
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# (c) Copyright 2016 Anatoly Galiulin
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#
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# See the file "copying.txt", included in this
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# distribution, for details about the copyright.
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#
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## This module contains Nim's support for reentrant locks.
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when not compileOption("threads") and not defined(nimdoc):
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when false:
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# make rlocks modlue consistent with locks module,
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# so they can replace each other seamlessly.
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{.error: "Rlocks requires --threads:on option.".}
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import std/private/syslocks
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type
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RLock* = SysLock ## Nim lock, re-entrant
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proc initRLock*(lock: var RLock) {.inline.} =
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## Initializes the given lock.
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when defined(posix):
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var a: SysLockAttr = default(SysLockAttr)
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initSysLockAttr(a)
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setSysLockType(a, SysLockType_Reentrant)
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initSysLock(lock, a.addr)
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else:
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initSysLock(lock)
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proc deinitRLock*(lock: RLock) {.inline.} =
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## Frees the resources associated with the lock.
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deinitSys(lock)
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proc tryAcquire*(lock: var RLock): bool {.inline.} =
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## Tries to acquire the given lock. Returns `true` on success.
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result = tryAcquireSys(lock)
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proc acquire*(lock: var RLock) {.inline.} =
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## Acquires the given lock.
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acquireSys(lock)
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proc release*(lock: var RLock) {.inline.} =
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## Releases the given lock.
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releaseSys(lock)
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template withRLock*(lock: RLock, code: untyped) =
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## Acquires the given lock and then executes the code.
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acquire(lock)
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{.locks: [lock].}:
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try:
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code
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finally:
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release(lock)
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