Address waits v0.1.0

Waiting on a word and waking its waiters through ulock_wait and ulock_wake.

Waiting on a word and waking its waiters through __ulock_wait and __ulock_wake.

`UL_COMPARE_AND_WAIT`

pub const UL_COMPARE_AND_WAIT: uint32 = 1;

UL_COMPARE_AND_WAIT: wait on a 32-bit word that holds the expected value.

pub const ULF_WAKE_ALL: uint32 = 0x100;

ULF_WAKE_ALL: wake every thread waiting on the word rather than one.

pub const ULF_NO_ERRNO: uint32 = 0x01000000;

ULF_NO_ERRNO: report failure as a negative error number rather than through errno.

pub extern func __ulock_wait(
    operation: uint32,
    address: *opaque,
    value: uint64,
    timeout: uint32
) -> int32

Sleeps while *address equals value, until a wake, a signal or the timeout.

Parameters

Name	Type	Description
`operation`	`uint32`	`UL_COMPARE_AND_WAIT`, combined with `ULF_NO_ERRNO`
`address`	`*opaque`	the word to wait on, four-byte aligned
`value`	`uint64`	the value the caller last saw there
`timeout`	`uint32`	microseconds to wait at most, or zero to wait without a limit

Returns: the number of waiters left, or a failure: EINTR, ETIMEDOUT, or EFAULT when the word moved

pub extern func __ulock_wake(
    operation: uint32,
    address: *opaque,
    wakeValue: uint64
) -> int32

Wakes a thread, or all of them with ULF_WAKE_ALL, sleeping on address.

Parameters

Name	Type	Description
`operation`	`uint32`	`UL_COMPARE_AND_WAIT`, combined with `ULF_WAKE_ALL` and `ULF_NO_ERRNO`
`address`	`*opaque`	the word they wait on
`wakeValue`	`uint64`	zero

Returns: zero, or a failure: ENOENT when nothing was waiting

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Overview

Windows platform bindings