struct lock_sys_t{LockMutex mutex;hash_table_t* rec_hash;hash_table_t* prdt_hash;hash_table_t* prdt_page_hash;LockMutex wait_mutex;srv_slot_t* waiting_threads;srv_slot_t* last_slot;int n_waiting;}; struct lock_t {trx_t* trx;UT_LIST_NODE_T(lock_t) trx_locks;dict_index_t*...
struct lock_sys_t{LockMutex mutex;hash_table_t*rec_hash;hash_table_t*prdt_hash;hash_table_t*prdt_page_hash;LockMutex wait_mutex;srv_slot_t*waiting_threads;srv_slot_t*last_slot;int n_waiting;};struct lock_t{trx_t*trx;UT_LIST_NODE_T(lock_t)trx_locks;dict_index_t*index;lock_t*h...
WL#10314: InnoDB: Lock-sys optimization: sharded lock_sys mutex Affects: Server-8.0 —Status: Complete Description Requirements Dependent Tasks High Level Architecture Low Level Design The Lock-sys orchestrates access to tables and rows. Each table, and each row, can be thought of as a resource...
out: // 释放全局 pwm_lock 互斥锁 mutex_unlock(&pwm_lock); // 如果添加成功,则在 sysfs 中导出 PWM 控制器 if (!ret)pwmchip_sysfs_export(chip); return ret; } 在上述内容的第76行调用了pwmchip_sysfs_export函数,负责在sysfs中导出PWM控制器,sysfs操作PWM也正是由该函数决定的,该函数定义在“driv...
加锁的方式:1、同步实例方法,锁是当前实例对象2、同步类方法,锁是当前类对象3、同步代码块,锁是括号里面的对象synchronized底层原理synchronized是基于JVM内置锁实现,通过内部对象Monitor(监视器锁)实现,基于进入与退出Monitor对象实现方法与代码块同步,监视器锁的实现依赖底层操作系统的Mutexlock(互斥锁)实现,它是一个...
mutex_lock(&clocksource_mutex); ret = sysfs_get_uname(buf, override_name, count); if (ret >= 0) clocksource_select(); mutex_unlock(&clocksource_mutex); return ret; } /** * sysfs_unbind_current_clocksource - interface for manually unbinding clocksource ...
- void sys_mutex_unlock(sys_mutex_t *mutex) Releases the mutex previously locked through 'sys_mutex_lock()'. - void sys_mutex_valid(sys_mutex_t *mutex) Returns 1 if the mutes is valid, 0 if it is not valid. When using pointers, a simple way is to check the pointer for != NULL...
mutex_lock(&cdcecm->out_lock); a mutex is locked twice without being unlock after a successful transfer, because there is no successful transfer. Expected results Even thought the Linux interface is down, RIOT should not stall after sending a ping. Actual results RIOT stalls because a mutex...
mutex_lock(&path->dentry->d_inode->i_mutex); if (cant_mount(path->dentry)) goto out_unlock; if (!d_unlinked(path->dentry)) err = attach_recursive_mnt(mnt, path, NULL); out_unlock: mutex_unlock(&path->dentry->d_inode->i_mutex); ...
mutex_lock(&_lock); for (uint8_t i=0; i<CONFIG_MODULE_SYS_MALLOC_MONITOR_SIZE; i++) { if (malloc_monitor.addr[i] == ptr_old) { malloc_monitor.addr[i] = ptr_new; size_t size_old = malloc_monitor.size[i]; malloc_monitor.size[i] = size_new; if (size_new > size_old)...