char *OS_initialize() {
struct CuAt* odm_object;
int num_fetched;
/* get the number of processors online */
ncpus = sysconf(_SC_NPROCESSORS_ONLN);
if( ncpus == -1 ) { /* sysconf error */
ncpus = 1;
}
/* get the page size in bytes */
pagesize = getpagesize();
/* get the amount of physical memory */
if( 0 != odm_initialize() ) {
/* fprintf(stderr, "cannot initialize ODM in Proc::ProcessTable::OS_initialize (AIX)!\n"); */
ppt_warn("cannot initialize ODM in Proc::ProcessTable::OS_initialize (AIX)!");
} else {
odm_object = (struct CuAt*)getattr("sys0", "realmem", 0, &num_fetched);
memory = strtoull(odm_object->value, 0, 10);
odm_terminate();
}
memory = memory * 1024;
return NULL;
}
/* fixup_stat_values()
*
* Correct, calculate, covert values to user expected values.
*
* @param format_str String containing field index types
* @param prs Data structure to peform fixups on
*/
static void fixup_stat_values(char *format_str, struct procstat* prs)
{
/* set the state pointer to the right (const) string */
switch (prs->state_c) {
case 'S':
prs->state = get_string(SLEEP);
break;
case 'W':
prs->state = get_string(WAIT);
break;
case 'R':
prs->state = get_string(RUN);
break;
case 'I':
prs->state = get_string(IDLE);
break;
case 'Z':
prs->state = get_string(DEFUNCT);
break;
case 'D':
prs->state = get_string(UWAIT);
break;
case 'T':
prs->state = get_string(STOP);
break;
/* unknown state, state is already set to NULL */
default:
ppt_warn("Ran into unknown state (hex char: %x)", (int) prs->state_c);
goto skip_state_format;
}
field_enable(format_str, F_STATE);
skip_state_format:
prs->start_time = (prs->start_time / system_hertz) + boot_time;
/* fix time */
prs->stime = JIFFIES_TO_MICROSECONDS(prs->stime);
prs->utime = JIFFIES_TO_MICROSECONDS(prs->utime);
prs->cstime = JIFFIES_TO_MICROSECONDS(prs->cstime);
prs->cutime = JIFFIES_TO_MICROSECONDS(prs->cutime);
/* derived time values */
prs->time = prs->utime + prs->stime;
prs->ctime = prs->cutime + prs->cstime;
field_enable_range(format_str, F_TIME, F_CTIME);
/* fix rss to be in bytes (returned from kernel in pages) */
prs->rss *= page_size;
}
void OS_get_table() {
struct procsinfo64 *procs = NULL;
int index = 0;
int fetched = 0;
struct timeval now_tval;
/* allocate memory to hold the procs */
/* procs = New(0, procs, PROCS_TO_FETCH, struct procsinfo64); */
procs = (struct procsinfo64 *)malloc(sizeof(struct procsinfo64) * PROCS_TO_FETCH);
if(NULL == procs) {
/* fprintf(stderr, "cannot allocate memory in Proc::ProcessTable::OS_get_table!\n"); */
ppt_warn("cannot allocate memory in Proc::ProcessTable::OS_get_table!");
return;
}
/* get current time of day */
gettimeofday(&now_tval, 0);
now_time = TVALU_TO_SEC(now_tval);
/* keep on grabbing chunks of processes until getprocs returns a smaller
block than we asked for */
while( (fetched = getprocs(procs, sizeof(struct procsinfo64),
NULL, 0, &index, PROCS_TO_FETCH))
>= PROCS_TO_FETCH) {
bless_procs(procs, fetched);
}
/* bless the last block of procs */
bless_procs(procs, fetched);
/* release the memory */
Safefree(procs);
return;
}
