C51 Version 5.50a and later QUESTION Is it possible to mix reentrant and non-reentrant functions in the same program? Can a non-reentrant function call a reentrant function which then calls another non-reentrant
/* non-reentrant function */charlowercase_c(char*string){staticchar*buffer;staticint index;char c=0;/* stores the string on first call */if(string!=NULL){buffer=string;index=0;}/* searches a lowercase character */for(;c=buffer[index];index++){if(islower(c)){index++;break;}}returnc...
Make sure that the interrupt cannot occur during the execution of a non-reentrant function. You may disable the interrupt service routine in the main function as follows: voidmain(void){ . . . ES1 =0;// disable serial interruptfval = atof (buffer);// call the non-reentrant functionES1 ...
事实上,与可重入性函数(reentrant function)对应的还有可重入内核(reentrant kernel),其区别和联系在《深入理解Linux内核》上有较详细的讲解。
可重入函数reentrant function 可重入函数主要用于多任务环境中,一个可重入的函数简单来说就是可以被中断的函数;而不可重入的函数由于使用了一些系统资源,比如全局变量区,中断向量表等,所以它如果被中断的话,可能会出现问题,这类函数是不能运行在多任务环境下的。
可重入与不可重入,reentrant关键字 Keil中帮助文档对此又详细的介绍 这一段的意思是,在Keil中,正常情况下函数调用是通过固定寄存器传递参数。因此当出现递归和类似的情况时,寄存器中参数可能会被覆盖。 如果想要通过堆栈来传递参数则需要使用reentrant参数。这个用来传
One of them describes the reentrant superconductivity with three critical temperatures T S 1 , T S 2 (lower and upper superconducting transition temperature) and T C (Curie temperature) which fulfil the relation T S 1 T S 2 (coexistence of ferromagnetism and superconductivity of nonreentrant ...
/* non-reentrant function */ char *strtoupper(char *string) { static char buffer[MAX_STRING_SIZE]; int index; for (index = 0; string[index]; index++) buffer[index] = toupper(string[index]); buffer[index] = 0 return buffer; } 该函数既不是可重入的,也不是线程安全的。使用第一种方...
KeilC51可重⼊函数reentrantfunction和递归分析 可重⼊与不可重⼊，reentrant关键字 Keil中帮助⽂档对此⼜详细的介绍 这⼀段的意思是，在Keil中，正常情况下函数调⽤是通过固定寄存器传递参数。因此当出现递归和类似的情况时，寄存器中参数可能会被覆盖。如果想要通过堆栈来传递参数则需要使⽤reentrant参数。
int func(char c) { int i=0; if(index >= sizeof(arr)) { printf("\n No storage\n"); return -1; } arr[index] = c; index++; return index; } ... ... ... The above function populates the array ‘arr’ with the character value passed to it as argument and then updates th...