Question: Many current language specifications such as for C and C

Many current language specifications, such as for C and C++, are inadequate for multithreaded programs. This can have an impact on compilers and the correctness of code, as this problem illustrates. Consider the following declarations and function definition:
int global_positives = 0;
typedef struct list {
struct list *next;
double val;
} * list;
void count_positives(list l)
list p;
for (p = l; p; p = p -> next)
if (p -> val > 0.0)
Now consider the case in which thread A performs
While thread B performs
a. What does the function do?
b. The C language only addresses single-threaded execution. Does the use of two parallel threads create any problems or potential problems?

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  • CreatedMay 09, 2015
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