示例用法:atomic_store_explicit(&queue->tail, nextTail, memory_order_release); atomic_init 函数原型:void atomic_init(_Atomic T* obj, T value) 描述:将原子对象初始化为指定的值。该函数将原子对象obj初始化为指定的初始值value。 示例用法:atomic_init(&queue.head, 0); memory_order_relaxed 描述:me...
atomic_init(&a,10);int* a_ptr = (int*) &a; atomic_store(a_ptr,20);intb =atomic_load(a_ptr); printf("b = %d\n",b);int* atomic_count_ptr = (int*) &atomic_count;intatomic_count_old_value =atomic_fetch_add(atomic_count_ptr,b); printf("atomic_count_old_value = %d\n",...
要在Linux中使用原子变量,首先需要包含<linux/atomic.h>头文件,这个头文件定义了atomic_t类型,它是进行原子操作的基本数据类型,它还提供了一系列原子操作的函数和宏。 示例代码 #include <linux/atomic.h> void example_atomic_operation(void) { atomic_t my_atomic = ATOMIC_INIT(10); // 初始化原子变量为1...
atomic_t v = ATOMIC_INIT(0); //定义原⼦变量v，并初始化为0 atomic_read(atomic_t *v); //获得原⼦变量的值，返回原⼦变量的值 void atomic_add(int i, atomic_t *v); //原⼦变量+i void atomic_sub(int i, atomic_t *v); //原⼦变量-i void atomic_inc(atomic_t *v); //...
atomic_init 初始化 atomic_store 赋值 atomic_load 获取 atomic_fetch_add 加 atomic_fetch_sub 减 ... 单线程示例 #include<stdio.h>#include<stdatomic.h>atomic_int atomic_count=ATOMIC_VAR_INIT(1);voidtest(){atomic_int a;atomic_init(&a,10);int*a_ptr=(int*)&a;atomic_store(a_ptr,20);...
pthread_atomic_init(&atomic_count, 0); pthread_create(&tid1, NULL, increment, NULL); pthread_create(&tid2, NULL, increment, NULL); pthread_join(tid1, NULL); pthread_join(tid2, NULL); printf("Final count: %d\n", atomic_load(&atomic_count)); pthread_mutex_destroy(&mutex); pthread...
atomic_flag taflag; //原子操作标志,类似于锁.用于每次写入和读取时锁住tread和twrite void** tqueue; //用来储存消息指针的数组 } tthoop; //结构体初始化 void tf_hoop_init(tthoop*th,int len); //结构体中的tqueue释放 void tf_hoop_free(tthoop*th); ...
#include<stdio.h> #include <tinycthread.h> #include <io_utils.h> #include <stdatomic.h> atomic_flag resume_flag = ATOMIC_FLAG_INIT; int PrintNumber(void*arg) { int current = 0; while(atomic_flag_test_and_set(&resume_flag)) { current++; PRINT_INT(current); thrd_sleep(&(struct ...
如果没记错，Linux分配fd应该都是从最小未被使用的数字开始分配的。所以 fd 4 关掉之后下一次accept/...
显然,核心功能由__mutex_init()函数实现,继续跟踪,得到相关C语言代码如下,请看: void__mutex_init(struct mutex *lock,constchar*name, struct lock_class_key *key) { atomic_set(&lock->count,1); spin_lock_init(&lock->wait_lock); INIT_LIST_HEAD(&lock->wait_list); ...