Linuxbusywait

1.1Busywaiting.Ifyouwanttodelayexecutionbyamultipleoftheclocktick,allowingsomeslackinthevalue,theeasiest(thoughnotrecommended) ...,busy-waiting,·busy-loopingor·spinningisatechniqueinwhichaprocessrepeatedlycheckstoseeifaconditionistrue,suchaswhetherkeyboardinputora ...,2011年10月1日—ThattermisusedtodescribecodetheusesCPUcontinuallywhilewaitingforsomethingtohappen.Yoursecondpieceofcodeismuchbett...

7.3. Delaying Execution

1.1 Busy waiting. If you want to delay execution by a multiple of the clock tick, allowing some slack in the value, the easiest (though not recommended) ...

Busy waiting

busy-waiting, · busy-looping or · spinning is a technique in which a process repeatedly checks to see if a condition is true, such as whether keyboard input or a ...

c

2011年10月1日 — That term is used to describe code the uses CPU continually while waiting for something to happen. Your second piece of code is much better if ...

Is there an efficient busy waiting method in kernel?

2021年3月14日 — Suppose a process is waiting for a lock held by some other process. Either it spinlocks (Busy waits) or it goes to sleep, to be woken up ...

linux

2021年11月6日 — A busy loop is a loop which purposely wastes time waiting for something to happen. Normally, you would want to avoid busy loops at all costs ...

Linux Kernel delay sleep 延遲函式學習筆記

2017年3月13日 — 使用legacy timer (計算jiffies) · 實作為busy waiting (所以很耗資源, 大量使用會造成效能下降) · 建議預設使用udelay · ndelay 在一些非PC的裝置上 ex: ...

Linux

2017年6月26日 — 關於udelay & mdelay, 就是busy waiting方式. driver常常會需要很短且精準的delay(n microsecond/millisecond),以完成sync。 此時用jiffies就不 ...

Synchronization (資料同步)

Linux 上資料同步的實作 ... 與Mutex 相同,Spinlock 可以用來保護Critical section,如果執行緒沒有獲取鎖,則會進入迴圈直到獲得上鎖的資格(Busy waiting),因此叫做自旋鎖 ...

What Does “Busy Waiting” Mean in Operating Systems?

2023年8月17日 — Busy waiting, · Secondly, a process can wait without consuming the processor. · Busy looping is usually used to achieve mutual exclusion · A ...

忙碌等待

在軟體工程中,忙碌等待(也稱自旋;英語:Busy waiting、busy-looping、spinning)是一種以行程反覆檢查一個條件是否為真為根本的技術,條件可能為鍵盤輸入或某個鎖 ...