[英]Pass function name as character pointer to pthread_create in C
I want to create a pthread using pthread_create function and pass the function name as 我想使用pthread_create函数创建一个pthread并将函数名称传递为
char *function_name="get_time";
int rc = pthread_create(&thread_arr[threadNum], NULL,
*function_name, (void *) output_cur_node->data);
Also tried using (void*)&function_name
也尝试使用
(void*)&function_name
This doesn't seem to enter the function get_time()
. 这似乎没有输入函数
get_time()
。
Instead, When I use below 相反,当我在下面使用
int rc = pthread_create(&thread_arr[threadNum], NULL,
get_time, (void *) output_cur_node->data);
it works fine. 它工作正常。
Please advise as to what is wrong here. 请告知这里有什么问题。
您需要传递函数的addr,但您正在尝试传递字符串的地址
The prototype of pthread_create is as follows: pthread_create的原型如下:
int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
void *(*start_routine) (void *), void *arg);
3rd argument has to be of function pointer which is of type 第三个参数必须是类型为函数的指针
void *(*start_routine) (void *)
无效*(* start_routine)(无效*)
So whenever you are trying to pass the argument by doing this 所以每当您尝试通过这样做传递参数时
char *function_name="get_time";
(void*)&function_name
effectively means void* type which does not matches with the above type. 有效地表示与上述类型不匹配的void *类型。 Hence compile time error would be reported.
因此,将报告编译时错误。
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