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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "mapping.h"
#include "timestamp.h"
static unsigned int incomplete = 0;
static unsigned int filtered = 0;
static unsigned int skipped = 0;
static unsigned long long threshold = 2700 * 1000; /* 1 ms == 1 full tick */
static struct timestamp* next(struct timestamp** pos, size_t* count, int cpu)
{
while (*count--)
if ((++(*pos))->cpu == cpu)
return *pos;
return NULL;
}
static struct timestamp* next_id(struct timestamp** pos, size_t* count,
int cpu, unsigned long id)
{
struct timestamp* ret;
while ((ret = next(pos, count, cpu)) && (*pos)->event != id);
return ret;
}
static int find_pair(struct timestamp* start,
struct timestamp** end,
size_t count)
{
struct timestamp *pos = start;
/* convention: the end->event is start->event + 1 */
*end = next_id(&pos, &count, start->cpu, start->event + 1);
return *end != NULL;
}
static void show_csv(struct timestamp* ts, size_t count)
{
struct timestamp* start = ts;
struct timestamp* stop;
if (find_pair(start, &stop, count)) {
if (stop->timestamp - start->timestamp > threshold)
filtered++;
else
printf("%llu, %llu, %llu\n",
start->timestamp, stop->timestamp,
stop->timestamp - start->timestamp);
} else
incomplete++;
}
/*static void show_all_per_cpu(struct timestamp* ts, size_t count)
{
struct timestamp* _ts = ts;
size_t _count = count;
int cpu;
for (cpu = 0; cpu < 4; cpu++) {
count = _count;
ts = _ts;
while (count--) {
if (ts->cpu == cpu)
show(ts, count);
ts++;
}
}
}*/
static void show_id(struct timestamp* ts, size_t count, unsigned long id)
{
while (ts->event != id + 1 && count--) {
skipped++;
ts++;
}
if (!count)
return;
while (count--)
if (ts->event == id)
show_csv(ts++, count);
else
ts++;
}
static void dump(struct timestamp* ts, size_t count, unsigned long id)
{
while (count--)
printf("%lu\n", (ts++)->event);
}
static void die(char* msg)
{
if (errno)
perror("error: ");
fprintf(stderr, "%s\n", msg);
exit(1);
}
int main(int argc, char** argv)
{
void* mapped;
size_t size, count;
struct timestamp* ts;
unsigned long id;
if (argc != 3)
die("Usage: ft2csv <event_name> <logfile>");
if (map_file(argv[2], &mapped, &size))
die("could not map file");
if (!str2event(argv[1], &id))
die("Unknown event!");
ts = (struct timestamp*) mapped;
count = size / sizeof(struct timestamp);
show_id(ts, count, id);
fprintf(stderr,
"Skipped : %d\n"
"Incomplete: %d\n"
"Filtered : %d\n",
skipped, incomplete, filtered);
return 0;
}
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