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top: avoid potential forest view segmentation fault

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Jim Warner 2011-12-05 14:10:41 -06:00 committed by Craig Small
parent 497428d770
commit 41ed28aa5d
1 changed files with 7 additions and 3 deletions
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top.c
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@ -3136,7 +3136,10 @@ static void forest_create (WIN_t *q) {
Tree_ppt = alloc_r(Tree_ppt, sizeof(proc_t*) * hwmsav);
}
while (0 == Seed_ppt[i]->ppid) // identify trees (expect 2)
forest_add(i++, 0); // add parent plus children
forest_add(i++, 1); // add parent plus children
for (i = 0; i < Frame_maxtask; i++) // finally, protect ourselves
if (!Seed_ppt[i]->pad_3) // against any kernel anomaly
Tree_ppt[Tree_idx++] = Seed_ppt[i];
}
memcpy(Seed_ppt, Tree_ppt, sizeof(proc_t*) * Frame_maxtask);
} // end: forest_create
@ -3149,8 +3152,9 @@ static inline const char *forest_display (const WIN_t *q, const proc_t *p) {
static char buf[ROWMINSIZ];
const char *which = (CHKw(q, Show_CMDLIN)) ? *p->cmdline : p->cmd;
if (!CHKw(q, Show_FOREST) || !p->pad_3) return which;
snprintf(buf, sizeof(buf), "%*s%s", 4 * p->pad_3, " `- ", which);
if (!CHKw(q, Show_FOREST) || 1 == p->pad_3) return which;
if (!p->pad_3) snprintf(buf, sizeof(buf), " ? %s", which);
else snprintf(buf, sizeof(buf), "%*s%s", 4 * (p->pad_3 - 1), " `- ", which);
return buf;
} // end: forest_display