/** Wait several microseconds.
*
* We assume that interrupts are already disabled.
*
* @param t Microseconds to wait.
*/
void asm_delay_loop(const uint32_t usec)
{
uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t)
CPU->arch.clock_frequency / 1000000;
while (tick_read() < stop)
;
}
static void* slave_entry(void* foo)
{
make_preemptpoint(&global_pp);
pthread_barrier_wait(&global_barrier);
global_iter = 0;
while (1)
{
/* do some processing */
tick_counter_t start, stop;
tick_read(&start);
test_preemptpoint(&global_pp);
tick_read(&stop);
global_ticks += stop.value - start.value;
++global_iter;
}
return NULL;
}
static void mult_switch(unsigned int n, gsl_matrix* res, gsl_matrix* lhs, gsl_matrix* rhs)
{
void (*f)(gsl_matrix*, gsl_matrix*, gsl_matrix*) = NULL;
#if CONFIG_USE_TICK
tick_counter_t ticks[3];
#endif
#define CASE_TO_F(__f, __n) case __n: __f = mult_matrix ## __n; break
switch (n)
{
CASE_TO_F(f, 0);
CASE_TO_F(f, 1);
CASE_TO_F(f, 2);
}
gsl_matrix_set_zero(res);
#if CONFIG_USE_TICK
tick_read(&ticks[0]);
#endif
f(res, lhs, rhs);
#if CONFIG_USE_TICK
tick_read(&ticks[1]);
#endif
#if CONFIG_USE_TICK
tick_sub(&ticks[2], &ticks[1], &ticks[0]);
printf("ticks: %llu\n", ticks[2].value);
#endif
print_matrix(res);
printf("---\n");
}
