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make top go faster

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This commit is contained in:
albert 2002-10-13 08:53:06 +00:00
parent 77356d9d64
commit d87d1c868e
1 changed files with 11 additions and 6 deletions
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17
top.c
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@ -1741,17 +1741,25 @@ static void cpudo (CPUS_t *cpu, const char *pfx)
static void frame_states (proc_t **ppt, int show) static void frame_states (proc_t **ppt, int show)
{ {
static HIST_t *hist_sav; static HIST_t *hist_sav;
static HIST_t *hist_new;
static unsigned hist_siz; // number of structs static unsigned hist_siz; // number of structs
HIST_t *hist_new;
unsigned total, running, sleeping, stopped, zombie; unsigned total, running, sleeping, stopped, zombie;
HIST_t *hist_tmp;
if (!hist_sav) { if (!hist_sav) { // 1st time through
Frame_maxtask = 0; Frame_maxtask = 0;
hist_siz = 100; hist_siz = 100;
hist_sav = alloc_c(sizeof(HIST_t)*hist_siz); hist_sav = alloc_c(sizeof(HIST_t)*hist_siz);
hist_new = alloc_c(sizeof(HIST_t)*hist_siz);
} }
hist_new = alloc_c(sizeof(HIST_t)*hist_siz);
// reuse memory each time around
hist_tmp = hist_sav;
hist_sav = hist_new;
hist_new = tmp;
total = running = sleeping = stopped = zombie = 0; total = running = sleeping = stopped = zombie = 0;
time_elapsed(); time_elapsed();
/* make a pass through the data to get stats */ /* make a pass through the data to get stats */
@ -1800,9 +1808,6 @@ static void frame_states (proc_t **ppt, int show)
total++; total++;
} /* end: while 'pids' */ } /* end: while 'pids' */
free(hist_sav);
hist_sav = hist_new;
/* shout results to the world (and us too, the next time around) */ /* shout results to the world (and us too, the next time around) */
Frame_maxtask = total; Frame_maxtask = total;