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# std/locks

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This module contains Nim's support for locks and condition vars.

# Imports

syslocks

# Types

    Cond = SysCond

  Nim condition variable Source Edit

    Lock = SysLock

  Nim lock; whether this is re-entrant or not is unspecified! Source Edit

# Procs

    proc `$`(lock: Lock): string {....raises: [], tags: [], forbids: [].}

  Source Edit

    proc acquire(lock: var Lock) {.inline, ...raises: [], tags: [], forbids: [].}

  Acquires the given lock. Source Edit

    proc broadcast(cond: var Cond) {.inline, ...raises: [], tags: [], forbids: [].}

  Unblocks all threads currently blocked on the specified condition variable `cond`. Source Edit

    proc deinitCond(cond: Cond) {.inline, ...raises: [], tags: [], forbids: [].}

  Frees the resources associated with the condition variable. Source Edit

    proc deinitLock(lock: Lock) {.inline, ...raises: [], tags: [], forbids: [].}

  Frees the resources associated with the lock. Source Edit

    proc initCond(cond: var Cond) {.inline, ...raises: [], tags: [], forbids: [].}

  Initializes the given condition variable. Source Edit

    proc initLock(lock: var Lock) {.inline, ...raises: [], tags: [], forbids: [].}

  Initializes the given lock. Source Edit

    proc release(lock: var Lock) {.inline, ...raises: [], tags: [], forbids: [].}

  Releases the given lock. Source Edit

    proc signal(cond: var Cond) {.inline, ...raises: [], tags: [], forbids: [].}

  Sends a signal to the condition variable `cond`. Source Edit

    proc tryAcquire(lock: var Lock): bool {.inline, ...raises: [], tags: [],
                                            forbids: [].}

  Tries to acquire the given lock. Returns `true` on success. Source Edit

    proc wait(cond: var Cond; lock: var Lock) {.inline, ...raises: [], tags: [],
        forbids: [].}

  Waits on the condition variable `cond`. Source Edit

# Templates

    template withLock(a: Lock; body: untyped)

  Acquires the given lock, executes the statements in body and releases the lock after the statements finish executing. Source Edit