/*
***************************************************************************
* Read CPU frequency statistics.
*
* IN:
* @a Activity structure.
*
* OUT:
* @a Activity structure with statistics.
***************************************************************************
*/
__read_funct_t wrap_read_cpuinfo(struct activity *a)
{
struct stats_pwr_cpufreq *st_pwr_cpufreq
= (struct stats_pwr_cpufreq *) a->_buf0;
/* Read CPU frequency stats */
read_cpuinfo(st_pwr_cpufreq, a->nr);
return;
}
int copy_cpu_stats(perf_stats* stats){
// For now we only handle 1 cpu. This needs to be fixed in the future.
uint64_t numCPUs = 1;
cpu_info* cpuInfo = NULL;
if ((cpuInfo = read_cpuinfo(&numCPUs)) == 0) {
printf("Error reading cpu information.\n");
return -1;
}
/* TODO, copy cpuInfo to the stats variable. */
stats->numCPUs = numCPUs;
stats->cpuStructs = (void*)cpuInfo;
return 0;
}
static void * st_cb(void *arg)
{
int num = 0;
st_ctx_p ctx = (st_ctx_p)arg;
pkt_cap_ctx_p p_snap = NULL;
transfer *sender = ctx->sender;
int log_size = 10240, log_len = 0;
char *log;
struct timeval now;
cpu_set_t mask;
int cpu_fd = 0; // read from /proc/stat
int mem_fd = 0; // read from /proc/meminfo
MEM_ALLOC(log, char*, log_size, NULL);
if (ctx->id >= 0) {
CPU_ZERO(&mask);
CPU_SET(ctx->id, &mask);
if (pthread_setaffinity_np(pthread_self(), sizeof(mask), &mask) < 0) {
fprintf(stderr, "%s pthread_setaffinity_np on %d failed!\n", __FUNCTION__, ctx->id);
return NULL;
}
}
p_snap = pkt_cap_ctx_snap(ctx->p_cap_ctx, ctx->num, NULL);
sleep(5);
while (1) {
int all_stop = 1;
for (int i = 0; i < ctx->num; i++) {
if (pkt_st_vary(&p_snap[i].p_pkt_info[PKT_PKT], &ctx->p_cap_ctx[i].p_pkt_info[PKT_PKT])) {
all_stop = 0;
break;
}
}
cpu_fd = open("/proc/stat", O_RDONLY, S_IRUSR);
if (cpu_fd < 0) {
fprintf(stderr, "read [%s] failed! [%d,%s]\n", "proc/stat", errno, strerror(errno));
return NULL;
}
mem_fd = open("/proc/meminfo", O_RDONLY, S_IRUSR);
if (cpu_fd < 0) {
fprintf(stderr, "read [%s] failed! [%d,%s]\n", "proc/meminfo", errno, strerror(errno));
return NULL;
}
// send log to log-server
gettimeofday(&now, NULL);
log_len = pkt_cap_ctx_log(ctx->p_cap_ctx, ctx->num, log, log_size, now);
if (log_len > 0) sender->nsend(log, log_len, NULL, -1);
log_len = read_cpuinfo(cpu_fd, log, log_size, now);
if (log_len > 0) sender->nsend(log, log_len, NULL, -1);
else fprintf(stderr, "read_cpuinfo %d\n", log_len);
log_len = read_meminfo(mem_fd, log, log_size, now);
if (log_len > 0) sender->nsend(log, log_len, NULL, -1);
else fprintf(stderr, "read_meminfo %d\n", log_len);
if (all_stop) {
fprintf(stdout, "pkt_cap_ctx_clear: clear pkt statis info\n");
pkt_cap_ctx_clear(p_snap, p_snap->num);
pkt_cap_ctx_clear(ctx->p_cap_ctx, ctx->num);
} else {
pkt_cap_ctx_snap(ctx->p_cap_ctx, ctx->num, p_snap);
}
close(mem_fd);
close(cpu_fd);
sleep(ctx->chk_interval);
}
return NULL;
}
