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#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <unistd.h>
#include "global.h"
#include "procstat.h"
#include "wmforkplop.h"
static void logged_data_init(logged_data *d, int nb_slices) {
d->nb_slices = nb_slices;
d->tic = g_new0(guint64, nb_slices);
d->data = g_new0(guint64, nb_slices);
d->max_val = 0;
d->slice_cnt = 0;
}
static void logged_data_free(logged_data *d) {
if (d->tic) g_free(d->tic); d->tic = NULL;
if (d->data) g_free(d->data); d->data = NULL;
}
static void
logged_data_push(logged_data *d, guint64 v) {
if (v > d->max_val) d->max_val = v;
if (d->slice_cnt != 0) {
if ((guint64)app->tics_now == d->tic[(d->slice_cnt-1) % d->nb_slices]) {
d->data[(d->slice_cnt-1) % d->nb_slices] = v;
return;
}
}
d->data[d->slice_cnt % d->nb_slices] = v;
d->tic[d->slice_cnt % d->nb_slices] = app->tics_now;
d->slice_cnt++;
}
static double
logged_data_mean(logged_data *d) {
if (d->slice_cnt == 0) return 0.;
int i0 = MAX(d->slice_cnt - d->nb_slices,0) % d->nb_slices;
int i1 = (d->slice_cnt-1) % d->nb_slices;
if (d->tic[i1] == d->tic[i0]) return 0.;
return ((double)d->data[i1] - (double)d->data[i0])/(d->tic[i1]-d->tic[i0]);
}
guint64
logged_data_get_current(logged_data *d) {
if (d->slice_cnt == 0) return 0;
else return d->data[(d->slice_cnt-1) % d->nb_slices];
}
static pinfo *pinfo_new(int pid) {
pinfo *p = g_new0(pinfo,1);
logged_data_init(&p->lcpu, 5);
logged_data_init(&p->lsize, 20);
logged_data_init(&p->lfaults, 20);
p->childs = NULL;
p->parent_aware = +1; /* request for addition into parent child list */
p->pid = pid;
return p;
}
static void pinfo_destroy_(pinfo *p) {
logged_data_free(&p->lcpu);
logged_data_free(&p->lsize);
logged_data_free(&p->lfaults);
g_list_free(p->childs);
memset(p, sizeof(pinfo), 0);
g_free(p);
}
#define pinfo_destroy(p) { pinfo_destroy_(p); p = NULL; }
static GHashTable *proc_hash;
static int nbpid_old, nbpid_new;
static int last_pid_old, last_pid_new;
static int fork_count = 0, kill_count = 0;
int get_fork_count() {
int n = fork_count; fork_count = 0;
return n;
}
int get_kill_count() {
int n = kill_count; kill_count = 0;
return n;
}
pinfo *
proc_hash_find_pid(int pid) {
if (proc_hash == NULL) return NULL;
return (pinfo*) g_hash_table_lookup(proc_hash, &pid);
}
static pinfo *
proc_hash_new_pid(int pid, int **ppkey) {
int *key = g_malloc(sizeof(int)); *key = pid;
g_assert(proc_hash_find_pid(pid) == NULL);
pinfo *p = pinfo_new(pid);
g_hash_table_insert(proc_hash, key, p);
if (ppkey) *ppkey = key;
return p;
}
double get_uptime() {
static double uptime_base;
static clock_t tup = 0;
if (tup == 0 || app->tics_now - tup > 2000) {
glibtop_uptime uptime;
glibtop_get_uptime(&uptime);
uptime_base = uptime.uptime;
tup = app->tics_now;
}
return uptime_base + (app->tics_now - tup)/(double)app->tics_per_sec;
}
double get_runtime(pinfo *p) {
double tdeath = (p->locked >= 0) ? 0. : ((long)(app->tics_now - p->death_tics))/(double)app->tics_per_sec;
// if (p->pid == 2889 || 1) { printf("uptime: %g , now=%12f start=%12f, p=%s\n", get_uptime(), (double)app->time_now, (double)p->time.start_time, p->state.cmd); }
//return get_uptime() - tdeath - p->time.start_time/(double)p->time.frequency;
return (app->time_now - p->time.start_time) - tdeath;
}
void update_fork_stats() {
glibtop_loadavg l;
nbpid_old = nbpid_new; last_pid_old = last_pid_new;
glibtop_get_loadavg (&l);
nbpid_new = l.nr_tasks; last_pid_new = l.last_pid;
fork_count = MAX(last_pid_new - last_pid_old, 0);
kill_count = MAX((nbpid_old - nbpid_new) + fork_count,0);
if (kill_count < 0) g_print("WARNING : kill_cound = %d\n", kill_count);
//printf("last_pid = %d FORK=%+d, KILL=%+d\n", last_pid_new, fork_count, kill_count);
}
float cpu_usage(pinfo *p) {
return logged_data_mean(&p->lcpu) * app->tics_per_sec / (float)p->time.frequency;
}
gint64 vsize_increase(pinfo *p) {
return logged_data_mean(&p->lsize) * app->tics_per_sec;
}
guint64 vsize_max_achieved(pinfo *p) {
return p->lsize.max_val;
}
float faults_rate(pinfo *p) {
return logged_data_mean(&p->lfaults) * app->tics_per_sec;
}
/* return a number > 0 if the first parameter comes after the second parameter
in the sort order. */
static gint compare_cpu_(pinfo *p1, pinfo *p2) {
if (cpu_usage(p1) < cpu_usage(p2)) return TRUE;
else return FALSE;
}
static gint compare_cmd_(pinfo *p1, pinfo *p2) {
return strcasecmp(p1->state.cmd, p2->state.cmd);
}
static void get_top_processes_(unsigned *ppid UNUSED, pinfo *p, GList **pl) {
(*pl) = g_list_insert_sorted(*pl, p, (GCompareFunc)compare_cpu_);
}
static void get_alpha_processes_(unsigned *ppid UNUSED, pinfo *p, GList **pl) {
(*pl) = g_list_insert_sorted(*pl, p, (GCompareFunc)compare_cmd_);
}
int top_list_is_valid = 0;
int alpha_list_is_valid = 0;
/* cpu usage sorted list */
GList *get_top_processes() {
static GList *l = NULL;
if ((top_list_is_valid || app->single_pid_mode) && l) return l;
if (l) { g_list_free(l); l = NULL; }
g_hash_table_foreach(proc_hash, (GHFunc)get_top_processes_, &l);
top_list_is_valid = 1;
return l;
}
/* alphabetically sorted list */
GList *get_alpha_processes() {
static GList *l = NULL;
if ((alpha_list_is_valid || app->single_pid_mode) && l) return l;
if (l) { g_list_free(l); l = NULL; }
g_hash_table_foreach(proc_hash, (GHFunc)get_alpha_processes_, &l);
alpha_list_is_valid = 1;
return l;
}
static gboolean update_proc_state(unsigned *ppid, pinfo *p, int delete_key) {
if (p->update_stats_decnt == 0) {
glibtop_proc_time time;
p->time.flags = 0;
if (p->locked < 0) return FALSE;
if (p->update_cnt == 0 ||
(p->update_cnt % 10) == 4) {
/* why updating more than once ? because when the process forks,
it keeps its name, and when the forked process does an 'exec' its
name changes, hence wmforkplop missed that when the exec was
delayed */
glibtop_get_proc_state(&p->state, p->pid);
glibtop_get_proc_uid(&p->uid, p->pid);
}
glibtop_get_proc_time(&time, p->pid);
if (time.flags == 0) { /* process died */
if (p->parent_aware != -2) { /* removal from child list of parent */
int pp = p->uid.ppid;
pinfo *daddy = (pinfo*)g_hash_table_lookup(proc_hash, &pp);
if (daddy)
daddy->childs = g_list_remove(daddy->childs, p);
p->parent_aware = -2;
p->death_tics = app->tics_now;
}
if (!p->locked) {
BLAHBLAH(1,printf("DEATH of %d (%s) [delete_key(%p)=%d]\n", *ppid, p->state.cmd,ppid,delete_key));
if (delete_key) g_free(ppid);
pinfo_destroy(p);
return TRUE;
} else p->locked = -1; /* -1 => process marked as dead, will be delete as soon as possible */
} else {
//printf("%s[%d] %d\n", p->state.cmd, p->update_cnt, p->smoothness);
if (p->parent_aware == +1) { /* must add to child list ? */
int pp = p->uid.ppid;
pinfo *daddy = (pinfo*)g_hash_table_lookup(proc_hash, &pp);
if (daddy)
daddy->childs = g_list_insert(daddy->childs, p, 0);
p->parent_aware = +2;
}
p->time = time;
if ((p->update_cnt % 10 ) == 0 || p == app->single_pid_mode) {
glibtop_get_proc_mem(&p->mem, p->pid);
glibtop_get_proc_kernel(&p->kernel, p->pid);
logged_data_push(&p->lsize, p->mem.vsize);
logged_data_push(&p->lfaults, p->kernel.min_flt+p->kernel.maj_flt);
}
logged_data_push(&p->lcpu, p->time.utime + p->time.stime);
p->update_stats_decnt = p->smoothness;
if (cpu_usage(p) > 0.01) {
p->update_stats_decnt = 1;
p->smoothness = MAX((p->smoothness*2)/3,3);
} else if (p->update_cnt > 2) {
p->smoothness = MIN(p->smoothness+1, 20) + (rand() % 3);
}
/*if (strchr("wX",p->state.cmd[0]))
printf("updated PID %5d [%s]: cpu = %4.1f (%5d), smoothness = %2d, decnt = %2d nb_stat=%d\n",
(int)p->pid, p->state.cmd, cpu_usage(p)*100., (int)p->time.utime, p->smoothness, p->update_stats_decnt, p->nb_slices);
*/
//p->smoothness = 200;
}
p->update_cnt++;
} else p->update_stats_decnt--;
return FALSE;
}
static void record_new_pid(pid_t pid) {
int *key;
pinfo *p = proc_hash_new_pid(pid, &key);
//static int cnt=0;
if (update_proc_state((unsigned*)key, p, 0) == TRUE) { /* if it returned TRUE, we have to
remove the pinfo from proc_hash,
the process died just after
having been detected.. nasty race
condition */
g_hash_table_remove(proc_hash, key); g_free(key);
}// else printf("new key: cnt = %d @ %p\n", ++cnt, key);
}
void update_top_stats() {
static pid_t last_pid = 0;
//printf("update_top_stats(tic=%d)\n", (int)(app->tics_now));
top_list_is_valid = 0; alpha_list_is_valid = 0;
g_hash_table_foreach_remove(proc_hash, (GHRFunc)update_proc_state, (gpointer)1);
//printf("check_ for new procs\n");
if (last_pid != last_pid_new) {
glibtop_proclist l;
unsigned i;
unsigned *ptr;
if (last_pid_new - last_pid < 10 && last_pid) {
for (i = last_pid; i <= (unsigned)last_pid_new; ++i) {
ptr = glibtop_get_proclist(&l, GLIBTOP_KERN_PROC_PID, i);
if (l.number == 1) record_new_pid(ptr[i]);
if (ptr) g_free(ptr);
}
} else {
ptr = glibtop_get_proclist (&l, GLIBTOP_KERN_PROC_ALL, 0);
for (i = 0; i < l.number; ++i) {
if (!proc_hash_find_pid(ptr[i]))
record_new_pid(ptr[i]);
}
g_free(ptr);
}
}
}
static void do_kill_all_(pid_t *pid UNUSED, pinfo *p, const char *cmd) {
if (strcmp(p->state.cmd, cmd) == 0) {
BLAHBLAH(1,printf("KILLALL : %d [%s]\n", p->pid, p->state.cmd));
kill(p->pid, SIGTERM);
}
}
void do_kill_all(const char *cmd) {
g_hash_table_foreach(proc_hash, (GHFunc)do_kill_all_, (void*)cmd);
}
void update_stats() {
update_fork_stats();
if (!Prefs.disable_top_list)
update_top_stats();
}
void init_stats() {
glibtop_init();
proc_hash = g_hash_table_new(g_int_hash,g_int_equal);
update_fork_stats();
}
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