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htop/openbsd/Platform.c
Michael McConville 1809f4be98 Remove needless allocation error conditions 
These allocations were converted to use xMalloc et al. and no longer
need error checks.
2016-04-29 21:10:05 -04:00

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/*
htop - openbsd/Platform.c
(C) 2014 Hisham H. Muhammad
(C) 2015 Michael McConville
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#include "Platform.h"
#include "Meter.h"
#include "CPUMeter.h"
#include "MemoryMeter.h"
#include "SwapMeter.h"
#include "TasksMeter.h"
#include "LoadAverageMeter.h"
#include "UptimeMeter.h"
#include "ClockMeter.h"
#include "HostnameMeter.h"
#include "SignalsPanel.h"
#include "OpenBSDProcess.h"
#include "OpenBSDProcessList.h"
#include <sys/sched.h>
#include <uvm/uvmexp.h>
#include <sys/param.h>
#include <sys/swap.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <time.h>
/*{
#include "Action.h"
#include "BatteryMeter.h"
#include "SignalsPanel.h"
extern ProcessFieldData Process_fields[];
}*/
#define MAXCPU 256
// XXX: probably should be a struct member
static int64_t old_v[MAXCPU][5];
/*
* Copyright (c) 1984, 1989, William LeFebvre, Rice University
* Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University
*
* Taken directly from OpenBSD's top(1).
*
* percentages(cnt, out, new, old, diffs) - calculate percentage change
* between array "old" and "new", putting the percentages in "out".
* "cnt" is size of each array and "diffs" is used for scratch space.
* The array "old" is updated on each call.
* The routine assumes modulo arithmetic. This function is especially
* useful on BSD machines for calculating cpu state percentages.
*/
static int percentages(int cnt, int64_t *out, int64_t *new, int64_t *old, int64_t *diffs) {
int64_t change, total_change, *dp, half_total;
int i;
/* initialization */
total_change = 0;
dp = diffs;
/* calculate changes for each state and the overall change */
for (i = 0; i < cnt; i++) {
if ((change = *new - *old) < 0) {
/* this only happens when the counter wraps */
change = INT64_MAX - *old + *new;
}
total_change += (*dp++ = change);
*old++ = *new++;
}
/* avoid divide by zero potential */
if (total_change == 0)
total_change = 1;
/* calculate percentages based on overall change, rounding up */
half_total = total_change / 2l;
for (i = 0; i < cnt; i++)
*out++ = ((*diffs++ * 1000 + half_total) / total_change);
/* return the total in case the caller wants to use it */
return (total_change);
}
ProcessField Platform_defaultFields[] = { PID, USER, PRIORITY, NICE, M_SIZE, M_RESIDENT, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
int Platform_numberOfFields = LAST_PROCESSFIELD;
/*
* See /usr/include/sys/signal.h
*/
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 SIGEMT", .number = 7 },
{ .name = " 8 SIGFPE", .number = 8 },
{ .name = " 9 SIGKILL", .number = 9 },
{ .name = "10 SIGBUS", .number = 10 },
{ .name = "11 SIGSEGV", .number = 11 },
{ .name = "12 SIGSYS", .number = 12 },
{ .name = "13 SIGPIPE", .number = 13 },
{ .name = "14 SIGALRM", .number = 14 },
{ .name = "15 SIGTERM", .number = 15 },
{ .name = "16 SIGURG", .number = 16 },
{ .name = "17 SIGSTOP", .number = 17 },
{ .name = "18 SIGTSTP", .number = 18 },
{ .name = "19 SIGCONT", .number = 19 },
{ .name = "20 SIGCHLD", .number = 20 },
{ .name = "21 SIGTTIN", .number = 21 },
{ .name = "22 SIGTTOU", .number = 22 },
{ .name = "23 SIGIO", .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 SIGINFO", .number = 29 },
{ .name = "30 SIGUSR1", .number = 30 },
{ .name = "31 SIGUSR2", .number = 31 },
{ .name = "32 SIGTHR", .number = 32 },
};
unsigned int Platform_numberOfSignals = sizeof(Platform_signals)/sizeof(SignalItem);
void Platform_setBindings(Htop_Action* keys) {
(void) keys;
}
MeterClass* Platform_meterTypes[] = {
&CPUMeter_class,
&ClockMeter_class,
&LoadAverageMeter_class,
&LoadMeter_class,
&MemoryMeter_class,
&SwapMeter_class,
&TasksMeter_class,
&UptimeMeter_class,
&BatteryMeter_class,
&HostnameMeter_class,
&AllCPUsMeter_class,
&AllCPUs2Meter_class,
&LeftCPUsMeter_class,
&RightCPUsMeter_class,
&LeftCPUs2Meter_class,
&RightCPUs2Meter_class,
&BlankMeter_class,
NULL
};
// preserved from FreeBSD port
int Platform_getUptime() {
struct timeval bootTime, currTime;
int mib[2] = { CTL_KERN, KERN_BOOTTIME };
size_t size = sizeof(bootTime);
int err = sysctl(mib, 2, &bootTime, &size, NULL, 0);
if (err) {
return -1;
}
gettimeofday(&currTime, NULL);
return (int) difftime(currTime.tv_sec, bootTime.tv_sec);
}
void Platform_getLoadAverage(double* one, double* five, double* fifteen) {
struct loadavg loadAverage;
int mib[2] = { CTL_VM, VM_LOADAVG };
size_t size = sizeof(loadAverage);
int err = sysctl(mib, 2, &loadAverage, &size, NULL, 0);
if (err) {
*one = 0;
*five = 0;
*fifteen = 0;
return;
}
*one = (double) loadAverage.ldavg[0] / loadAverage.fscale;
*five = (double) loadAverage.ldavg[1] / loadAverage.fscale;
*fifteen = (double) loadAverage.ldavg[2] / loadAverage.fscale;
}
int Platform_getMaxPid() {
// this is hard-coded in sys/sys/proc.h - no sysctl exists
return 32766;
}
double Platform_setCPUValues(Meter* this, int cpu) {
int i;
double perc;
OpenBSDProcessList* pl = (OpenBSDProcessList*) this->pl;
CPUData* cpuData = &(pl->cpus[cpu]);
int64_t new_v[CPUSTATES], diff_v[CPUSTATES], scratch_v[CPUSTATES];
double *v = this->values;
size_t size = sizeof(double) * CPUSTATES;
int mib[] = { CTL_KERN, KERN_CPTIME2, cpu-1 };
if (sysctl(mib, 3, new_v, &size, NULL, 0) == -1) {
return 0.;
}
// XXX: why?
cpuData->totalPeriod = 1;
percentages(CPUSTATES, diff_v, new_v,
(int64_t *)old_v[cpu-1], scratch_v);
for (i = 0; i < CPUSTATES; i++) {
old_v[cpu-1][i] = new_v[i];
v[i] = diff_v[i] / 10.;
}
Meter_setItems(this, 4);
perc = v[0] + v[1] + v[2] + v[3];
if (perc <= 100. && perc >= 0.) {
return perc;
} else {
return 0.;
}
}
void Platform_setMemoryValues(Meter* this) {
ProcessList* pl = (ProcessList*) 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;
}
/*
* Copyright (c) 1994 Thorsten Lockert <tholo@sigmasoft.com>
* All rights reserved.
*
* Taken almost directly from OpenBSD's top(1)
*/
void Platform_setSwapValues(Meter* this) {
ProcessList* pl = (ProcessList*) this->pl;
struct swapent *swdev;
unsigned long long int total, used;
int nswap, rnswap, i;
nswap = swapctl(SWAP_NSWAP, 0, 0);
if (nswap == 0) {
return;
}
swdev = xCalloc(nswap, sizeof(*swdev));
rnswap = swapctl(SWAP_STATS, swdev, nswap);
if (rnswap == -1) {
free(swdev);
return;
}
// if rnswap != nswap, then what?
/* Total things up */
total = used = 0;
for (i = 0; i < nswap; i++) {
if (swdev[i].se_flags & SWF_ENABLE) {
used += (swdev[i].se_inuse / (1024 / DEV_BSIZE));
total += (swdev[i].se_nblks / (1024 / DEV_BSIZE));
}
}
this->total = pl->totalSwap = total;
this->values[0] = pl->usedSwap = used;
free(swdev);
}
void Platform_setTasksValues(Meter* this) {
// TODO
}
char* Platform_getProcessEnv(pid_t pid) {
// TODO
return NULL;
}
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