在Linux内核中,wake_lock_init是一个非常重要的函数,用于管理系统中的唤醒锁。唤醒锁是用来防止系统在某些情况下进入睡眠状态,保持系统的正常运行。在一些特定的场景下,可能需要保持系统的唤醒,以确保关键任务的执行。 wake_lock_init函数的定义如下: ``` void wake_lock_init(struct wake_lock *wl, enum wake_l...
其中wake_lock_init()用于初始化一个新锁,type参数指定了锁的类型;wake_lock_destroy()则注销一个锁;wake_lock()和wake_lock_timeout()用于将初始化完成的锁激活,使之成为有效的永久锁或者超时锁;wake_unlock()用于解锁使之成为无效锁。另外还有两个接口: 1. int wake_lock_active(struct wake_lock *lock)...
void wake_lock_timeout(struct wake_lock *lock,long timeout); void wake_unlock(struct wake_lock *lock); 其中wake_lock_init()用于初始化一个新锁,type参数指定了锁的类型;wake_lock_destroy()则注销一个锁;wake_lock()和wake_lock_timeout()用于将初始化完成的锁激活,使之成为有效的永久锁或者超时锁...
1、wake_lock系统初始化 代码语言:javascript 复制 static int __init wakelocks_init(void) { int ret; int i; // 初始化有效锁链表,内核维护了2个有效锁链表 // WAKE_LOCK_SUSPEND 用于阻止进入深度休眠模式 // WAKE_LOCK_IDLE 用于阻止进入空闲模式 for (i = 0; i < ARRAY_SIZE(active_wake_locks...
wake_lock_init(&chrg_lock, WAKE_LOCK_SUSPEND, "xxx_wake_lock");//初始化类型为WAKE_LOCK_SUSPEND的wake_lock锁 #ifdef CONFIG_HAS_EARLYSUSPEND static void xxx_early_suspend(struct early_suspend *h) { ... wake_lock(&chrg_lock); .
Linux内核中的wake_lock#include <linux/wakelock.h> #include <linux/jiffies.h> struct wake_lock wlock; 1 2 3 4初始化(一般放在probe或者register函数里):wake_lock_init(&wlock, WAKE_LOCK_SUSPEND, "wlock name"); 1判断是否已加锁,释放锁if (wake_lock_active(&pon->wlock)) { wake_unlock(&...
wake_lock_init(&nfc_wake_lock, WAKE_LOCK_SUSPEND,"NFCWAKE");/* request irq. the irq is set whenever the chip has data available * for reading. it is cleared when all data has been read. */pr_info("%s : requesting IRQ %d\n", __func__, client->irq); ...
wake_lock_init(&unknown_wakeup,WAKE_LOCK_SUSPEND,"unknown_wakeups");//初始化wakelock:main,sys_sync,unknown_wakeups,同时将其加入到非活动锁链表中，给main_wake_lock加锁 ret=platform_device_register(&power_device);if(ret){ pr_err("[wakelocks_init]:platform_device_registerfailed/n");gotoerr_...
static struct wake_lock ec43_wlock; 2. 初始化 wake_lock: wake_lock_init(&ec43_wlock, WAKE_LOCK_SUSPEND, “ec43_wakelock”); 3.在须要唤醒处调用: wake_lock_timeout(&ec43_wlock, msecs_to_jiffies(10*1000)); 作用同上。具体不再说明,自己查看 ...
This is logcat -d since invoking termux-wake-lock, waiting and hitting Ctrl-C 11-13 14:10:28.867 22620 22620 D AndroidRuntime: >>> START com.android.internal.os.RuntimeInit uid 10061 <<< 11-13 14:10:28.872 22620 22620 D AndroidRuntime: CheckJNI is OFF 11-13 14:10:28.915 22620...