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Add columns for process autogroup identifier and nice value

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Adds AGRP (autogroup) and ANI (autogroup nice) columns that
report the information from /proc/PID/autogroup, as well as
handlers for '{' and '}' to change the autogroup nice value.

This is guarded by /proc/sys/kernel/sched_autogroup_enabled
such that sampling and/or changing values wont be attempted
unless the kernel feature is enabled.

Fixes: #720
This commit is contained in:
Nathan Scott
2021-08-06 16:45:30 +10:00
committed by BenBE
parent aa0424ade8
commit 1bd95983b2
13 changed files with 201 additions and 10 deletions
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25
pcp/PCPProcess.c
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@ -82,6 +82,8 @@ const ProcessFieldData Process_fields[] = {
[PROC_COMM] = { .name = "COMM", .title = "COMM ", .description = "comm string of the process", .flags = 0, },
[PROC_EXE] = { .name = "EXE", .title = "EXE ", .description = "Basename of exe of the process", .flags = 0, },
[CWD] = { .name = "CWD", .title = "CWD ", .description = "The current working directory of the process", .flags = PROCESS_FLAG_CWD, },
[AUTOGROUP_ID] = { .name = "AUTOGROUP_ID", .title = "AGRP", .description = "The autogroup identifier of the process", .flags = PROCESS_FLAG_LINUX_AUTOGROUP, },
[AUTOGROUP_NICE] = { .name = "AUTOGROUP_NICE", .title = " ANI", .description = "Nice value (the higher the value, the more other processes take priority) associated with the process autogroup", .flags = PROCESS_FLAG_LINUX_AUTOGROUP, },
};
Process* PCPProcess_new(const Settings* settings) {
@ -168,6 +170,25 @@ static void PCPProcess_writeField(const Process* this, RichString* str, ProcessF
xSnprintf(buffer, n, "%5lu ", pp->ctxt_diff);
break;
case SECATTR: snprintf(buffer, n, "%-30s ", pp->secattr ? pp->secattr : "?"); break;
case AUTOGROUP_ID:
if (pp->autogroup_id != -1) {
xSnprintf(buffer, n, "%4ld ", pp->autogroup_id);
} else {
attr = CRT_colors[PROCESS_SHADOW];
xSnprintf(buffer, n, " N/A ");
}
break;
case AUTOGROUP_NICE:
if (pp->autogroup_id != -1) {
xSnprintf(buffer, n, "%3d ", pp->autogroup_nice);
attr = pp->autogroup_nice < 0 ? CRT_colors[PROCESS_HIGH_PRIORITY]
: pp->autogroup_nice > 0 ? CRT_colors[PROCESS_LOW_PRIORITY]
: CRT_colors[PROCESS_SHADOW];
} else {
attr = CRT_colors[PROCESS_SHADOW];
xSnprintf(buffer, n, "N/A ");
}
break;
default:
Process_writeField(this, str, field);
return;
@ -245,6 +266,10 @@ static int PCPProcess_compareByKey(const Process* v1, const Process* v2, Process
return SPACESHIP_NUMBER(p1->ctxt_diff, p2->ctxt_diff);
case SECATTR:
return SPACESHIP_NULLSTR(p1->secattr, p2->secattr);
case AUTOGROUP_ID:
return SPACESHIP_NUMBER(p1->autogroup_id, p2->autogroup_id);
case AUTOGROUP_NICE:
return SPACESHIP_NUMBER(p1->autogroup_nice, p2->autogroup_nice);
default:
return Process_compareByKey_Base(v1, v2, key);
}