static struct usb_function_instance *try_get_usb_function_instance(const char *name) { struct usb_function_driver *fd; struct usb_function_instance *fi; fi = ERR_PTR(-ENOENT); mutex_lock(&func_lock); list_for_each_entry(fd, &func_list, list) { if (strcmp(name, fd->name)) continue; if (!try_module_get(fd->mod)) { fi = ERR_PTR(-EBUSY); break; } fi = fd->alloc_inst(); if (IS_ERR(fi)) module_put(fd->mod); else fi->fd = fd; break; } mutex_unlock(&func_lock); return fi; }
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <pthread.h>
#include <semaphore.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
// static
static char* name[] = {"uac","uvc","back","fprint"};
int main()
{
int i = 0;
while(i++<10)
{
if(strcmp(name[i],"uac"))
{
printf("string is not the same \n");
continue;
}
}
while(1);
return 0;
}
C/C++函数，比较两个字符串 设这两个字符串为str1，str2， 若str1==str2，则返回零; 若str1<str2，则返回负数; 若str1>str2，则返回正数。 matlab中函数，strcmp(s1，s2) 判断两个字符串s1和s2是否相同，相同返回true ,不同返回false
原文：https://www.cnblogs.com/nowroot/p/13655058.html