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#include <BH/Bench.h>
#include <BH/Timer.h>
#include <stdlib.h>
#include <stdio.h>
#define BATCH_ITERS 1024
struct BH_Bench
{
struct BH_Bench *next;
const char *name;
BH_BenchCallback cb;
int started;
size_t iterations;
};
static BH_Bench *root = NULL;
static BH_Timer *timer = NULL;
static void cleanup(void)
{
BH_Bench *current;
current = root;
while (current)
{
BH_Bench *next = current->next;
free(current);
current = next;
}
}
void BH_BenchAdd(const char *name,
BH_BenchCallback cb)
{
BH_Bench *bench, *current;
/* Allocate and fill new benchmark entry */
bench = malloc(sizeof(*bench));
if (!bench)
return;
bench->next = NULL;
bench->name = name;
bench->cb = cb;
bench->started = 0;
bench->iterations = 0;
/* Append benchmark entry */
current = root;
while (current && current->next)
current = current->next;
if (current)
current->next = bench;
else
root = bench;
}
int BH_BenchIter(BH_Bench *state)
{
int64_t millis;
if (!state->started)
{
state->started = 1;
state->iterations = 0;
BH_TimerRestart(timer);
return 1;
}
state->iterations++;
if (state->iterations & (BATCH_ITERS - 1))
return 1;
millis = BH_TimerMilliseconds(timer);
if (millis > 1000 || state->iterations > 1000000000)
{
float ips, ns;
ips = state->iterations / (millis / 1000.0f);
ns = (millis * 1000000.0) / state->iterations;
printf("%-12s %.2f ips (%.2f ns)\n", state->name, ips, ns);
return 0;
}
return 1;
}
int BH_BenchRun(void)
{
BH_Bench *current;
int result = 0;
timer = BH_TimerNew();
if (!timer)
{
printf("ERROR: Can't create timer for benchmarks");
return -1;
}
printf("Running benchmarks...\n");
current = root;
while (current)
{
current->cb(current);
current = current->next;
fflush(stdout);
}
cleanup();
return 0;
}
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