/*###### Forest View support ###########################################*/
/*
- * We try keeping most existing code unaware of these activities
- * ( plus, maintain alphabetical order within carefully chosen )
- * ( function names of: forest_a, forest_b, forest_c, forest_d )
- * ( with each name exactly 1 letter more than its predecessor ) */
-static proc_t **Seed_ppt; // temporary win ppt pointer
-static proc_t **Tree_ppt; // forest_create will resize
-static int Tree_idx; // frame_make resets to zero
- /* the next three support collapse/expand children. the Hide_pid
- array holds parent pids whose children have been manipulated.
- positive pid values represent parents with collapsed children
- while a negative pid value means children have been expanded.
- ( the first two are managed under the 'keys_task()' routine ) */
-static int *Hide_pid; // collapsible process array
-static int Hide_tot; // total used in above array
+ * We try keeping most existing code unaware of these activities |
+ * ( plus, maintain alphabetical order within carefully chosen ) |
+ * ( names beginning forest_a, forest_b, forest_c and forest_d ) |
+ * ( with each name exactly 1 letter more than its predecessor ) | */
+static proc_t **Seed_ppt; // temporary win ppt pointer |
+static proc_t **Tree_ppt; // forest_create will resize |
+static int Tree_idx; // frame_make resets to zero |
+ /* the next three support collapse/expand children. the Hide_pid |
+ array holds parent pids whose children have been manipulated. |
+ positive pid values represent parents with collapsed children |
+ while a negative pid value means children have been expanded. |
+ ( the first two are managed under the 'keys_task()' routine ) | */
+static int *Hide_pid; // collapsible process array |
+static int Hide_tot; // total used in above array |
#ifndef TREE_VCPUOFF
-static unsigned *Hide_cpu; // accum tics from collapsed
+static unsigned *Hide_cpu; // accum tics from collapsed |
#endif
/*
- * This little recursive guy is the real forest view workhorse.
- * He fills in the Tree_ppt array and also sets the child indent
- * level which is stored in an unused proc_t padding byte. */
+ * This little recursive guy was the real forest view workhorse. |
+ * He fills in the Tree_ppt array and also sets the child indent |
+ * level which is stored in an 'extra' result struct as a u_int. | */
static void forest_adds (const int self, int level) {
int i;
- if (Tree_idx < Frame_maxtask) { // immunize against insanity
- if (level > 100) level = 101; // our arbitrary nests limit
- Tree_ppt[Tree_idx] = Seed_ppt[self]; // add this as root or child
- Tree_ppt[Tree_idx++]->pad_3 = level; // borrow 1 byte, 127 levels
+ if (Tree_idx < Frame_maxtask) { // immunize against insanity |
+ if (level > 100) level = 101; // our arbitrary nests limit |
+ Tree_ppt[Tree_idx] = Seed_ppt[self]; // add this as root or child |
+ Tree_ppt[Tree_idx++]->pad_3 = level; // borrow 1 byte, 127 levels |
#ifdef TREE_SCANALL
for (i = 0; i < Frame_maxtask; i++) {
if (i == self) continue;
#ifndef TREE_SCANALL
/*
- * Our qsort callback to order a ppt by the non-display start_time
- * which will make us immune from any pid, ppid or tgid anomalies
- * if/when pid values are wrapped by the kernel! */
+ * A qsort callback to order a ppt by the non-display start_time |
+ * which will make us immune to any pid, ppid and tgid anomalies |
+ * if/when the pid values ever become are wrapped by the kernel! | */
static int forest_based (const proc_t **x, const proc_t **y) {
if ( (*x)->start_time > (*y)->start_time ) return 1;
if ( (*x)->start_time < (*y)->start_time ) return -1;
/*
- * This routine is responsible for preparing the proc_t's for
- * a forest display in a designated window. After completion,
- * he will replace the original window ppt with our specially
- * ordered forest version. He also marks any hidden children! */
+ * This function is responsible for preparing those proc_t's for |
+ * a forest display in that designated window. After completion, |
+ * he'll replace that original window ppt array with a specially |
+ * ordered forest view version. He'll also mark hidden children! | */
static void forest_create (WIN_t *q) {
static int hwmsav;
int i, j;
- Seed_ppt = q->ppt; // avoid passing WIN_t ptrs
- if (!Tree_idx) { // do just once per frame
- if (hwmsav < Frame_maxtask) { // grow, but never shrink
+ Seed_ppt = q->ppt; // avoid passing pointers |
+ if (!Tree_idx) { // do just once per frame |
+ if (hwmsav < Frame_maxtask) { // grow, but never shrink |
hwmsav = Frame_maxtask;
Tree_ppt = alloc_r(Tree_ppt, sizeof(proc_t *) * hwmsav);
#ifndef TREE_VCPUOFF
#ifndef TREE_SCANALL
qsort(Seed_ppt, Frame_maxtask, sizeof(proc_t *), (QFP_t)forest_based);
#endif
- for (i = 0; i < Frame_maxtask; i++) { // avoid any hidepid distortions
- if (!Seed_ppt[i]->pad_3) // real & pseudo parents == zero
- forest_adds(i, 0); // add a parent and its children
+ for (i = 0; i < Frame_maxtask; i++) { // avoid hidepid distorts |
+ if (!Seed_ppt[i]->pad_3) // parents are at level 0 |
+ forest_adds(i, 0); // add parents + children |
}
#ifndef TREE_VCPUOFF
memset(Hide_cpu, 0, sizeof(unsigned) * Frame_maxtask);
#endif
- /* we're borrowing some pad bytes in the proc_t,
- pad_2: 'x' means a collapsed thread, 'z' means an unseen child
- pad_3: where level number is stored (0 - 100) */
+ /* now we're going to borrow a couple of 'pad' bytes in the proc_t |
+ pad_2: 'x' means a collapsed thread & 'z' means an unseen child |
+ pad_3: this is where the level numbers will be stored (0 - 100) | */
for (i = 0; i < Hide_tot; i++) {
if (Hide_pid[i] > 0) {
for (j = 0; j < Frame_maxtask; j++) {
#endif
children = 1;
}
- /* if any children found (and collapsed), mark the parent
- ( when children aren't found we won't negate the pid )
- ( to prevent a future scan since who's to say such a )
- ( task won't fork one or more children in the future ) */
+ /* if any children found (& collapsed) mark the parent |
+ ( when children aren't found don't negate the pid ) |
+ ( to prevent future scans since who's to say such ) |
+ ( tasks will not fork more children in the future ) | */
if (children) Tree_ppt[parent]->pad_2 = 'x';
- // this will force a check of the next Hide_pid[], if any
+ // this will force a check of next Hide_pid[i], if any |
j = Frame_maxtask + 1;
}
}
- // if target task disappeared (ended), prevent further scanning
+ // if a target task disappeared prevent any further scanning |
if (j == Frame_maxtask) Hide_pid[i] = -Hide_pid[i];
}
}
/*
- * This guy adds the artwork to either p->cmd or p->cmdline
- * when in forest view mode, otherwise he just returns 'em. */
+ * This guy adds the artwork to either 'cmd' or 'cmdline' values |
+ * when we're in forest view mode otherwise he just returns them | */
static inline const char *forest_display (const WIN_t *q, const proc_t *p) {
#ifndef SCROLLVAR_NO
static char buf[1024*64*2]; // the same as readproc's MAX_BUFSZ
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