ardupilot/Tools/CPUInfo/CPUInfo.cpp

140 lines
4.3 KiB
C++

/*
test CPU speed
Andrew Tridgell September 2011
*/
#include <cmath>
#include <AP_HAL/AP_HAL.h>
#include <AP_Common/AP_Common.h>
void setup();
void loop();
const AP_HAL::HAL& hal = AP_HAL::get_HAL();
void setup() {
}
static void show_sizes(void)
{
hal.console->printf("Type sizes:\n");
hal.console->printf("char : %lu\n", (unsigned long)sizeof(char));
hal.console->printf("short : %lu\n", (unsigned long)sizeof(short));
hal.console->printf("int : %lu\n", (unsigned long)sizeof(int));
hal.console->printf("long : %lu\n", (unsigned long)sizeof(long));
hal.console->printf("long long : %lu\n", (unsigned long)sizeof(long long));
hal.console->printf("bool : %lu\n", (unsigned long)sizeof(bool));
hal.console->printf("void* : %lu\n", (unsigned long)sizeof(void *));
hal.console->printf("printing NaN: %f\n", (double)sqrtf(-1.0f));
hal.console->printf("printing +Inf: %f\n", (double)(1.0f/0.0f));
hal.console->printf("printing -Inf: %f\n", (double)(-1.0f/0.0f));
}
#define TENTIMES(x) do { x; x; x; x; x; x; x; x; x; x; } while (0)
#define FIFTYTIMES(x) do { TENTIMES(x); TENTIMES(x); TENTIMES(x); TENTIMES(x); TENTIMES(x); } while (0)
#define TIMEIT(name, op, count) do { \
uint32_t us_end, us_start; \
us_start = AP_HAL::micros(); \
for (uint8_t i = 0; i < count; i++) { \
FIFTYTIMES(op); \
} \
us_end = AP_HAL::micros(); \
hal.console->printf("%-10s %7.2f usec/call\n", name, double(us_end - us_start) / (count * 50.0)); \
} while (0)
volatile float v_f = 1.0;
volatile float v_out;
volatile double v_d = 1.0;
volatile double v_out_d;
volatile uint32_t v_32 = 1;
volatile uint32_t v_out_32 = 1;
volatile uint16_t v_16 = 1;
volatile uint16_t v_out_16 = 1;
volatile uint8_t v_8 = 1;
volatile uint8_t v_out_8 = 1;
volatile uint8_t mbuf1[128], mbuf2[128];
volatile uint64_t v_64 = 1;
volatile uint64_t v_out_64 = 1;
static void show_timings(void)
{
v_f = 1+(AP_HAL::micros() % 5);
v_out = 1+(AP_HAL::micros() % 3);
v_32 = 1+(AP_HAL::micros() % 5);
v_out_32 = 1+(AP_HAL::micros() % 3);
v_16 = 1+(AP_HAL::micros() % 5);
v_out_16 = 1+(AP_HAL::micros() % 3);
v_8 = 1+(AP_HAL::micros() % 5);
v_out_8 = 1+(AP_HAL::micros() % 3);
hal.console->printf("Operation timings:\n");
hal.console->printf("Note: timings for some operations are very data dependent\n");
TIMEIT("nop", asm volatile("nop"::), 255);
TIMEIT("micros()", AP_HAL::micros(), 200);
TIMEIT("millis()", AP_HAL::millis(), 200);
TIMEIT("fadd", v_out += v_f, 100);
TIMEIT("fsub", v_out -= v_f, 100);
TIMEIT("fmul", v_out *= v_f, 100);
TIMEIT("fdiv /=", v_out /= v_f, 100);
TIMEIT("fdiv 2/x", v_out = 2.0f/v_f, 100);
TIMEIT("dadd", v_out_d += v_d, 100);
TIMEIT("dsub", v_out_d -= v_d, 100);
TIMEIT("dmul", v_out_d *= v_d, 100);
TIMEIT("ddiv", v_out_d /= v_d, 100);
TIMEIT("sin()", v_out = sinf(v_f), 20);
TIMEIT("cos()", v_out = cosf(v_f), 20);
TIMEIT("tan()", v_out = tanf(v_f), 20);
TIMEIT("acos()", v_out = acosf(v_f * 0.2), 20);
TIMEIT("asin()", v_out = asinf(v_f * 0.2), 20);
TIMEIT("atan2()", v_out = atan2f(v_f * 0.2, v_f * 0.3), 20);
TIMEIT("sqrt()",v_out = sqrtf(v_f), 20);
TIMEIT("iadd8", v_out_8 += v_8, 100);
TIMEIT("isub8", v_out_8 -= v_8, 100);
TIMEIT("imul8", v_out_8 *= v_8, 100);
TIMEIT("idiv8", v_out_8 /= v_8, 100);
TIMEIT("iadd16", v_out_16 += v_16, 100);
TIMEIT("isub16", v_out_16 -= v_16, 100);
TIMEIT("imul16", v_out_16 *= v_16, 100);
TIMEIT("idiv16", v_out_16 /= v_16, 100);
TIMEIT("iadd32", v_out_32 += v_32, 100);
TIMEIT("isub32", v_out_32 -= v_32, 100);
TIMEIT("imul32", v_out_32 *= v_32, 100);
TIMEIT("idiv32", v_out_32 /= v_32, 100);
TIMEIT("iadd64", v_out_64 += v_64, 100);
TIMEIT("isub64", v_out_64 -= v_64, 100);
TIMEIT("imul64", v_out_64 *= v_64, 100);
TIMEIT("idiv64", v_out_64 /= v_64, 100);
TIMEIT("memcpy128", memcpy((void*)mbuf1, (const void *)mbuf2, sizeof(mbuf1)), 20);
TIMEIT("memset128", memset((void*)mbuf1, 1, sizeof(mbuf1)), 20);
TIMEIT("delay(1)", hal.scheduler->delay(1), 5);
}
void loop()
{
show_sizes();
hal.console->printf("\n");
show_timings();
hal.console->printf("\n");
hal.scheduler->delay(3000);
}
AP_HAL_MAIN();