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htop/linux/Platform.c

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/*
htop - linux/Platform.c
(C) 2014 Hisham H. Muhammad
Released under the GNU GPLv2, see the COPYING file
in the source distribution for its full text.
*/
#include "Platform.h"
#include "IOPriority.h"
#include "IOPriorityPanel.h"
#include "LinuxProcess.h"
#include "LinuxProcessList.h"
#include "Battery.h"
#include "Meter.h"
#include "CPUMeter.h"
#include "DiskIOMeter.h"
#include "MemoryMeter.h"
#include "SwapMeter.h"
#include "TasksMeter.h"
#include "LoadAverageMeter.h"
#include "UptimeMeter.h"
#include "PressureStallMeter.h"
#include "ClockMeter.h"
#include "DateMeter.h"
#include "DateTimeMeter.h"
#include "HostnameMeter.h"
#include "zfs/ZfsArcMeter.h"
#include "zfs/ZfsCompressedArcMeter.h"
#include "LinuxProcess.h"
#include "StringUtils.h"
#include <math.h>
#include <assert.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
ProcessField Platform_defaultFields[] = { PID, USER, PRIORITY, NICE, M_SIZE, M_RESIDENT, (int)M_SHARE, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
//static ProcessField defaultIoFields[] = { PID, IO_PRIORITY, USER, IO_READ_RATE, IO_WRITE_RATE, IO_RATE, COMM, 0 };
int Platform_numberOfFields = LAST_PROCESSFIELD;
const SignalItem Platform_signals[] = {
{ .name = " 0 Cancel", .number = 0 },
{ .name = " 1 SIGHUP", .number = 1 },
{ .name = " 2 SIGINT", .number = 2 },
{ .name = " 3 SIGQUIT", .number = 3 },
{ .name = " 4 SIGILL", .number = 4 },
{ .name = " 5 SIGTRAP", .number = 5 },
{ .name = " 6 SIGABRT", .number = 6 },
{ .name = " 6 SIGIOT", .number = 6 },
{ .name = " 7 SIGBUS", .number = 7 },
{ .name = " 8 SIGFPE", .number = 8 },
{ .name = " 9 SIGKILL", .number = 9 },
{ .name = "10 SIGUSR1", .number = 10 },
{ .name = "11 SIGSEGV", .number = 11 },
{ .name = "12 SIGUSR2", .number = 12 },
{ .name = "13 SIGPIPE", .number = 13 },
{ .name = "14 SIGALRM", .number = 14 },
{ .name = "15 SIGTERM", .number = 15 },
{ .name = "16 SIGSTKFLT", .number = 16 },
{ .name = "17 SIGCHLD", .number = 17 },
{ .name = "18 SIGCONT", .number = 18 },
{ .name = "19 SIGSTOP", .number = 19 },
{ .name = "20 SIGTSTP", .number = 20 },
{ .name = "21 SIGTTIN", .number = 21 },
{ .name = "22 SIGTTOU", .number = 22 },
{ .name = "23 SIGURG", .number = 23 },
{ .name = "24 SIGXCPU", .number = 24 },
{ .name = "25 SIGXFSZ", .number = 25 },
{ .name = "26 SIGVTALRM", .number = 26 },
{ .name = "27 SIGPROF", .number = 27 },
{ .name = "28 SIGWINCH", .number = 28 },
{ .name = "29 SIGIO", .number = 29 },
{ .name = "29 SIGPOLL", .number = 29 },
{ .name = "30 SIGPWR", .number = 30 },
{ .name = "31 SIGSYS", .number = 31 },
};
const unsigned int Platform_numberOfSignals = ARRAYSIZE(Platform_signals);
static Htop_Reaction Platform_actionSetIOPriority(State* st) {
Panel* panel = st->panel;
LinuxProcess* p = (LinuxProcess*) Panel_getSelected(panel);
if (!p) return HTOP_OK;
IOPriority ioprio1 = p->ioPriority;
Panel* ioprioPanel = IOPriorityPanel_new(ioprio1);
void* set = Action_pickFromVector(st, ioprioPanel, 21, true);
if (set) {
IOPriority ioprio2 = IOPriorityPanel_getIOPriority(ioprioPanel);
bool ok = MainPanel_foreachProcess((MainPanel*)panel, (MainPanel_ForeachProcessFn) LinuxProcess_setIOPriority, (Arg){ .i = ioprio2 }, NULL);
if (!ok)
beep();
}
Panel_delete((Object*)ioprioPanel);
return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
}
void Platform_setBindings(Htop_Action* keys) {
keys['i'] = Platform_actionSetIOPriority;
}
MeterClass* Platform_meterTypes[] = {
&CPUMeter_class,
&ClockMeter_class,
&DateMeter_class,
&DateTimeMeter_class,
&LoadAverageMeter_class,
&LoadMeter_class,
&MemoryMeter_class,
&SwapMeter_class,
&TasksMeter_class,
&UptimeMeter_class,
&BatteryMeter_class,
&HostnameMeter_class,
&AllCPUsMeter_class,
&AllCPUs2Meter_class,
&AllCPUs4Meter_class,
&AllCPUs8Meter_class,
&LeftCPUsMeter_class,
&RightCPUsMeter_class,
&LeftCPUs2Meter_class,
&RightCPUs2Meter_class,
&LeftCPUs4Meter_class,
&RightCPUs4Meter_class,
&LeftCPUs8Meter_class,
&RightCPUs8Meter_class,
&BlankMeter_class,
&PressureStallCPUSomeMeter_class,
&PressureStallIOSomeMeter_class,
&PressureStallIOFullMeter_class,
&PressureStallMemorySomeMeter_class,
&PressureStallMemoryFullMeter_class,
&ZfsArcMeter_class,
&ZfsCompressedArcMeter_class,
&DiskIOMeter_class,
NULL
};
int Platform_getUptime() {
double uptime = 0;
FILE* fd = fopen(PROCDIR "/uptime", "r");
if (fd) {
int n = fscanf(fd, "%64lf", &uptime);
fclose(fd);
if (n <= 0) return 0;
}
return floor(uptime);
}
void Platform_getLoadAverage(double* one, double* five, double* fifteen) {
int activeProcs, totalProcs, lastProc;
*one = 0; *five = 0; *fifteen = 0;
FILE *fd = fopen(PROCDIR "/loadavg", "r");
if (fd) {
int total = fscanf(fd, "%32lf %32lf %32lf %32d/%32d %32d", one, five, fifteen,
&activeProcs, &totalProcs, &lastProc);
(void) total;
assert(total == 6);
fclose(fd);
}
}
int Platform_getMaxPid() {
FILE* file = fopen(PROCDIR "/sys/kernel/pid_max", "r");
if (!file) return -1;
int maxPid = 4194303;
int match = fscanf(file, "%32d", &maxPid);
(void) match;
fclose(file);
return maxPid;
}
double Platform_setCPUValues(Meter* this, int cpu) {
LinuxProcessList* pl = (LinuxProcessList*) this->pl;
CPUData* cpuData = &(pl->cpus[cpu]);
double total = (double) ( cpuData->totalPeriod == 0 ? 1 : cpuData->totalPeriod);
double percent;
double* v = this->values;
v[CPU_METER_NICE] = cpuData->nicePeriod / total * 100.0;
v[CPU_METER_NORMAL] = cpuData->userPeriod / total * 100.0;
if (this->pl->settings->detailedCPUTime) {
v[CPU_METER_KERNEL] = cpuData->systemPeriod / total * 100.0;
v[CPU_METER_IRQ] = cpuData->irqPeriod / total * 100.0;
v[CPU_METER_SOFTIRQ] = cpuData->softIrqPeriod / total * 100.0;
v[CPU_METER_STEAL] = cpuData->stealPeriod / total * 100.0;
v[CPU_METER_GUEST] = cpuData->guestPeriod / total * 100.0;
v[CPU_METER_IOWAIT] = cpuData->ioWaitPeriod / total * 100.0;
Meter_setItems(this, 8);
if (this->pl->settings->accountGuestInCPUMeter) {
percent = v[0]+v[1]+v[2]+v[3]+v[4]+v[5]+v[6];
} else {
percent = v[0]+v[1]+v[2]+v[3]+v[4];
}
} else {
v[2] = cpuData->systemAllPeriod / total * 100.0;
v[3] = (cpuData->stealPeriod + cpuData->guestPeriod) / total * 100.0;
Meter_setItems(this, 4);
percent = v[0]+v[1]+v[2]+v[3];
}
percent = CLAMP(percent, 0.0, 100.0);
if (isnan(percent)) percent = 0.0;
v[CPU_METER_FREQUENCY] = cpuData->frequency;
return percent;
}
void Platform_setMemoryValues(Meter* this) {
ProcessList* pl = (ProcessList*) this->pl;
LinuxProcessList* lpl = (LinuxProcessList*) this->pl;
long int usedMem = pl->usedMem;
long int buffersMem = pl->buffersMem;
long int cachedMem = pl->cachedMem;
usedMem -= buffersMem + cachedMem;
this->total = pl->totalMem;
this->values[0] = usedMem;
this->values[1] = buffersMem;
this->values[2] = cachedMem;
if (lpl->zfs.enabled != 0) {
this->values[0] -= lpl->zfs.size;
this->values[2] += lpl->zfs.size;
}
}
void Platform_setSwapValues(Meter* this) {
ProcessList* pl = (ProcessList*) this->pl;
this->total = pl->totalSwap;
this->values[0] = pl->usedSwap;
}
void Platform_setZfsArcValues(Meter* this) {
LinuxProcessList* lpl = (LinuxProcessList*) this->pl;
ZfsArcMeter_readStats(this, &(lpl->zfs));
}
void Platform_setZfsCompressedArcValues(Meter* this) {
LinuxProcessList* lpl = (LinuxProcessList*) this->pl;
ZfsCompressedArcMeter_readStats(this, &(lpl->zfs));
}
char* Platform_getProcessEnv(pid_t pid) {
char procname[128];
xSnprintf(procname, sizeof(procname), PROCDIR "/%d/environ", pid);
FILE* fd = fopen(procname, "r");
char *env = NULL;
if (fd) {
size_t capacity = 4096, size = 0, bytes;
env = xMalloc(capacity);
while ((bytes = fread(env+size, 1, capacity-size, fd)) > 0) {
size += bytes;
capacity *= 2;
env = xRealloc(env, capacity);
}
fclose(fd);
if (size < 2 || env[size-1] || env[size-2]) {
if (size + 2 < capacity) {
env = xRealloc(env, capacity+2);
}
env[size] = 0;
env[size+1] = 0;
}
}
return env;
}
void Platform_getPressureStall(const char *file, bool some, double* ten, double* sixty, double* threehundred) {
*ten = *sixty = *threehundred = 0;
char procname[128+1];
xSnprintf(procname, 128, PROCDIR "/pressure/%s", file);
FILE *fd = fopen(procname, "r");
if (!fd) {
*ten = *sixty = *threehundred = NAN;
return;
}
int total = fscanf(fd, "some avg10=%32lf avg60=%32lf avg300=%32lf total=%*f ", ten, sixty, threehundred);
if (!some) {
total = fscanf(fd, "full avg10=%32lf avg60=%32lf avg300=%32lf total=%*f ", ten, sixty, threehundred);
}
(void) total;
assert(total == 3);
fclose(fd);
}
void Platform_getDiskIO(unsigned long int *bytesRead, unsigned long int *bytesWrite, unsigned long int *msTimeSpend) {
FILE *fd = fopen(PROCDIR "/diskstats", "r");
if (!fd) {
*bytesRead = 0;
*bytesWrite = 0;
*msTimeSpend = 0;
return;
}
unsigned long int read_sum = 0, write_sum = 0, timeSpend_sum = 0;
char lineBuffer[256];
while (fgets(lineBuffer, sizeof(lineBuffer), fd)) {
char diskname[32];
unsigned long int read_tmp, write_tmp, timeSpend_tmp;
if (sscanf(lineBuffer, "%*d %*d %31s %*u %*u %lu %*u %*u %*u %lu %*u %*u %lu", diskname, &read_tmp, &write_tmp, &timeSpend_tmp) == 4) {
if (String_startsWith(diskname, "dm-"))
continue;
/* only count root disks, e.g. do not count IO from sda and sda1 twice */
if ((diskname[0] == 's' || diskname[0] == 'h')
&& diskname[1] == 'd'
&& isalpha((unsigned char)diskname[2])
&& isdigit((unsigned char)diskname[3]))
continue;
/* only count root disks, e.g. do not count IO from mmcblk0 and mmcblk0p1 twice */
if (diskname[0] == 'm'
&& diskname[1] == 'm'
&& diskname[2] == 'c'
&& diskname[3] == 'b'
&& diskname[4] == 'l'
&& diskname[5] == 'k'
&& isdigit((unsigned char)diskname[6])
&& diskname[7] == 'p')
continue;
read_sum += read_tmp;
write_sum += write_tmp;
timeSpend_sum += timeSpend_tmp;
}
}
fclose(fd);
/* multiply with sector size */
*bytesRead = 512 * read_sum;
*bytesWrite = 512 * write_sum;
*msTimeSpend = timeSpend_sum;
}
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