89 lines
4.2 KiB
Plaintext
89 lines
4.2 KiB
Plaintext
--- ps/common.h
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+++ ps/common.h 2012-06-01 15:30:43.880009972 +0000
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@@ -302,6 +302,7 @@ extern int running_only;
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extern int screen_cols;
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extern int screen_rows;
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extern time_t seconds_since_boot;
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+extern unsigned long long jiffies_since_boot;
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extern selection_node *selection_list;
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extern unsigned simple_select;
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extern sort_node *sort_list;
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--- ps/global.c
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+++ ps/global.c 2012-06-01 15:32:10.488010283 +0000
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@@ -79,6 +79,7 @@ int prefer_bsd_defaults = -1
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int screen_cols = -1;
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int screen_rows = -1;
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time_t seconds_since_boot = -1;
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+unsigned long long jiffies_since_boot = -1;
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selection_node *selection_list = (selection_node *)0xdeadbeef;
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unsigned simple_select = 0xffffffff;
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sort_node *sort_list = (sort_node *)0xdeadbeef; /* ready-to-use sort list */
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@@ -369,6 +370,7 @@ static const char *set_personality(void)
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/************ Call this to reinitialize everything ***************/
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void reset_global(void){
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static proc_t p;
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+ double uptime_secs;
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reset_selection_list();
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look_up_our_self(&p);
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set_screen_size();
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@@ -392,7 +394,8 @@ void reset_global(void){
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negate_selection = 0;
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page_size = getpagesize();
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running_only = 0;
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- seconds_since_boot = uptime(0,0);
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+ seconds_since_boot = uptime(&uptime_secs,0);
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+ jiffies_since_boot = ((long double)uptime_secs * Hertz);
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selection_list = NULL;
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simple_select = 0;
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sort_list = NULL;
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--- ps/output.c
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+++ ps/output.c 2012-06-01 15:40:35.160510179 +0000
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@@ -471,11 +471,11 @@ static int pr_etimes(char *restrict cons
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static int pr_c(char *restrict const outbuf, const proc_t *restrict const pp){
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unsigned long long total_time; /* jiffies used by this process */
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unsigned pcpu = 0; /* scaled %cpu, 99 means 99% */
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- unsigned long long seconds; /* seconds of process life */
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+ unsigned long long jiffies; /* jiffies of process life */
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total_time = pp->utime + pp->stime;
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if(include_dead_children) total_time += (pp->cutime + pp->cstime);
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- seconds = seconds_since_boot - pp->start_time / Hertz;
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- if(seconds) pcpu = (total_time * 100ULL / Hertz) / seconds;
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+ jiffies = jiffies_since_boot - pp->start_time;
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+ if(jiffies) pcpu = (total_time * 100ULL) / jiffies;
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if (pcpu > 99U) pcpu = 99U;
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return snprintf(outbuf, COLWID, "%2u", pcpu);
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}
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@@ -483,24 +483,24 @@ static int pr_c(char *restrict const out
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static int pr_pcpu(char *restrict const outbuf, const proc_t *restrict const pp){
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unsigned long long total_time; /* jiffies used by this process */
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unsigned pcpu = 0; /* scaled %cpu, 999 means 99.9% */
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- unsigned long long seconds; /* seconds of process life */
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+ unsigned long long jiffies; /* jiffies of process life */
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total_time = pp->utime + pp->stime;
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if(include_dead_children) total_time += (pp->cutime + pp->cstime);
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- seconds = seconds_since_boot - pp->start_time / Hertz;
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- if(seconds) pcpu = (total_time * 1000ULL / Hertz) / seconds;
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- if (pcpu > 999U)
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- return snprintf(outbuf, COLWID, "%u", pcpu/10U);
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+ jiffies = jiffies_since_boot - pp->start_time;
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+ if(jiffies) pcpu = (total_time * 1000ULL) / jiffies;
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+ if (pcpu/10U >= 100U) /* do not confuse the user by scale effects */
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+ return snprintf(outbuf, COLWID, "100");
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return snprintf(outbuf, COLWID, "%u.%u", pcpu/10U, pcpu%10U);
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}
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/* this is a "per-mill" format, like %cpu with no decimal point */
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static int pr_cp(char *restrict const outbuf, const proc_t *restrict const pp){
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unsigned long long total_time; /* jiffies used by this process */
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unsigned pcpu = 0; /* scaled %cpu, 999 means 99.9% */
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- unsigned long long seconds; /* seconds of process life */
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+ unsigned long long jiffies; /* jiffies of process life */
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total_time = pp->utime + pp->stime;
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if(include_dead_children) total_time += (pp->cutime + pp->cstime);
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- seconds = seconds_since_boot - pp->start_time / Hertz ;
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- if(seconds) pcpu = (total_time * 1000ULL / Hertz) / seconds;
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+ jiffies = jiffies_since_boot - pp->start_time;
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+ if(jiffies) pcpu = (total_time * 1000ULL) / jiffies;
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if (pcpu > 999U) pcpu = 999U;
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return snprintf(outbuf, COLWID, "%3u", pcpu);
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}
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