interrupt_operatorinterrupt_operatorInterruptOperatorInterruptOperatorinterrupt_operator (算子)

名称

interrupt_operatorinterrupt_operatorInterruptOperatorInterruptOperatorinterrupt_operator — 尝试中断在不同线程中运行的算子。

签名

描述

interrupt_operatorinterrupt_operatorInterruptOperatorInterruptOperatorInterruptOperatorinterrupt_operator attempts to gracefully interrupt the operator currently running in the HALCON thread represented by HThreadIDHThreadIDHThreadIDHThreadIDHThreadIDhthread_id. If that currently running operator supports interruption, it will abort its execution depending on ModeModeModeModemodemode (see below). If the thread is currently not executing any operator, or if the currently running operator does not support interruptions, interrupt_operatorinterrupt_operatorInterruptOperatorInterruptOperatorInterruptOperatorinterrupt_operator is a no-op. The execution of any future operator in the other thread is not affected.

The ID representing a thread can be obtained with get_current_hthread_idget_current_hthread_idGetCurrentHthreadIdGetCurrentHthreadIdGetCurrentHthreadIdget_current_hthread_id。

interrupt_operatorinterrupt_operatorInterruptOperatorInterruptOperatorInterruptOperatorinterrupt_operator supports currently only one type of interruption, which can be set in ModeModeModeModemodemode. Note that the corresponding type must also be supported by the operator currently running in the other thread. To determine if an operator is interruptible and which kind of interrupts it supports, please see the "Execution Information" section of the operator documentation or query the information using the parameter 'interrupt_mode'"interrupt_mode""interrupt_mode""interrupt_mode""interrupt_mode""interrupt_mode" of the operator get_operator_infoget_operator_infoGetOperatorInfoGetOperatorInfoGetOperatorInfoget_operator_info。

Some operators, for which no interruptibility is mentioned in the reference documentation, can still be interrupted at some points of their execution. However, such interruptabilities are not guaranteed and can change without further notice between different versions of HALCON.

'cancel'"cancel""cancel""cancel""cancel""cancel"：

Abort the execution of the operator. All results computed by the operator are discarded and the operator returns the error code H_ERR_CANCEL (22).

注意

Note that not all operators support interruption. If a given operator supports interruptions and which modes are supported is described in the execution information section of the reference documentation of the corresponding operator.

Also note that there is no hard guarantee about the granularity of the interruption. The granularity can depend on the operator, its input data and the speed of the device. It is typically finer than 10 ms.

执行信息

• 多线程类型：可重入（与非独占算子并行运行）。
• 多线程作用域：全局（可从任何线程调用）。
• 未采用并行化处理。

参数

示例（HDevelop）

global tuple HThreadID
get_current_hthread_id (HThreadID)
* call some slow operator...

* In a different thread
wait_seconds(2)
* Interrupt the long-running operator in the other thread
interrupt_operator (HThreadID, 'cancel')

结果

If all the operator parameters are valid, interrupt_operatorinterrupt_operatorInterruptOperatorInterruptOperatorInterruptOperatorinterrupt_operator 返回 2 ( H_MSG_TRUE )。否则将抛出异常。

可能的前趋

get_current_hthread_idget_current_hthread_idGetCurrentHthreadIdGetCurrentHthreadIdGetCurrentHthreadIdget_current_hthread_id

替代

set_operator_timeoutset_operator_timeoutSetOperatorTimeoutSetOperatorTimeoutSetOperatorTimeoutset_operator_timeout

另见

get_current_hthread_idget_current_hthread_idGetCurrentHthreadIdGetCurrentHthreadIdGetCurrentHthreadIdget_current_hthread_id, set_operator_timeoutset_operator_timeoutSetOperatorTimeoutSetOperatorTimeoutSetOperatorTimeoutset_operator_timeout

模块

基础