htop/TasksMeter.c
Christian Göttsche 157086e750 Split RichString_(append|appendn|write) into wide and ascii
RichString_writeFrom takes a top spot during performance analysis due to the
calls to mbstowcs() and iswprint().

Most of the time we know in advance that we are only going to print regular
ASCII characters.
2020-12-08 20:58:40 +01:00

89 lines
2.8 KiB
C

/*
htop - TasksMeter.c
(C) 2004-2011 Hisham H. Muhammad
Released under the GNU GPLv2, see the COPYING file
in the source distribution for its full text.
*/
#include "TasksMeter.h"
#include "CRT.h"
#include "Macros.h"
#include "Object.h"
#include "ProcessList.h"
#include "RichString.h"
#include "Settings.h"
#include "XUtils.h"
static const int TasksMeter_attributes[] = {
CPU_SYSTEM,
PROCESS_THREAD,
PROCESS,
TASKS_RUNNING
};
static void TasksMeter_updateValues(Meter* this, char* buffer, size_t len) {
const ProcessList* pl = this->pl;
this->values[0] = pl->kernelThreads;
this->values[1] = pl->userlandThreads;
this->values[2] = pl->totalTasks - pl->kernelThreads - pl->userlandThreads;
this->values[3] = MINIMUM(pl->runningTasks, pl->cpuCount);
if (pl->totalTasks > this->total) {
this->total = pl->totalTasks;
}
if (pl->settings->hideKernelThreads) {
this->values[0] = 0;
}
xSnprintf(buffer, len, "%d/%d", (int) this->values[3], (int) this->total);
}
static void TasksMeter_display(const Object* cast, RichString* out) {
const Meter* this = (const Meter*)cast;
const Settings* settings = this->pl->settings;
char buffer[20];
int processes = (int) this->values[2];
xSnprintf(buffer, sizeof(buffer), "%d", processes);
RichString_writeAscii(out, CRT_colors[METER_VALUE], buffer);
int threadValueColor = CRT_colors[METER_VALUE];
int threadCaptionColor = CRT_colors[METER_TEXT];
if (settings->highlightThreads) {
threadValueColor = CRT_colors[PROCESS_THREAD_BASENAME];
threadCaptionColor = CRT_colors[PROCESS_THREAD];
}
if (!settings->hideUserlandThreads) {
RichString_appendAscii(out, CRT_colors[METER_TEXT], ", ");
xSnprintf(buffer, sizeof(buffer), "%d", (int)this->values[1]);
RichString_appendAscii(out, threadValueColor, buffer);
RichString_appendAscii(out, threadCaptionColor, " thr");
}
if (!settings->hideKernelThreads) {
RichString_appendAscii(out, CRT_colors[METER_TEXT], ", ");
xSnprintf(buffer, sizeof(buffer), "%d", (int)this->values[0]);
RichString_appendAscii(out, threadValueColor, buffer);
RichString_appendAscii(out, threadCaptionColor, " kthr");
}
RichString_appendAscii(out, CRT_colors[METER_TEXT], "; ");
xSnprintf(buffer, sizeof(buffer), "%d", (int)this->values[3]);
RichString_appendAscii(out, CRT_colors[TASKS_RUNNING], buffer);
RichString_appendAscii(out, CRT_colors[METER_TEXT], " running");
}
const MeterClass TasksMeter_class = {
.super = {
.extends = Class(Meter),
.delete = Meter_delete,
.display = TasksMeter_display,
},
.updateValues = TasksMeter_updateValues,
.defaultMode = TEXT_METERMODE,
.maxItems = 4,
.total = 100.0,
.attributes = TasksMeter_attributes,
.name = "Tasks",
.uiName = "Task counter",
.caption = "Tasks: "
};