C programming

4. Finish the following sudo code by filling all "'s to show how spin lock can be implemented by test_and_set() and why it is called spin lock. #define bool int #define true ! #define false 0 typedef struct ( ) lock; lock mutex - malloc (sizeof(lock); bool value // initialization mutex->value false; // acquire using test_and_set() void acquire(lock mutex) while (??? return; void releaseflock "mutex) ( return