htop/freebsd/FreeBSDProcessList.c

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/*
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htop - FreeBSDProcessList.c
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(C) 2014 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#include "ProcessList.h"
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#include "FreeBSDProcessList.h"
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <fcntl.h>
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/*{
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#include <kvm.h>
typedef struct FreeBSDProcessList_ {
ProcessList super;
kvm_t* kd;
} FreeBSDProcessList;
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}*/
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static int MIB_vm_stats_vm_v_wire_count[4];
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static int MIB_vm_stats_vm_v_cache_count[4];
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static int MIB_hw_physmem[2];
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static int pageSizeKb;
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ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList) {
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FreeBSDProcessList* fpl = calloc(1, sizeof(FreeBSDProcessList));
ProcessList* pl = (ProcessList*) fpl;
ProcessList_init(pl, usersTable, pidWhiteList);
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int cpus = 1;
size_t sizeof_cpus = sizeof(cpus);
int err = sysctlbyname("hw.ncpu", &cpus, &sizeof_cpus, NULL, 0);
if (err) cpus = 1;
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pl->cpuCount = MAX(cpus, 1);
pl->cpus = realloc(pl->cpus, cpus * sizeof(CPUData));
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for (int i = 0; i < cpus; i++) {
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pl->cpus[i].totalTime = 1;
pl->cpus[i].totalPeriod = 1;
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}
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size_t len;
len = 4; sysctlnametomib("vm.stats.vm.v_wire_count", MIB_vm_stats_vm_v_wire_count, &len);
len = 4; sysctlnametomib("vm.stats.vm.v_cache_count", MIB_vm_stats_vm_v_cache_count, &len);
len = 2; sysctlnametomib("hw.physmem", MIB_hw_physmem, &len);
pageSizeKb = PAGE_SIZE_KB;
fpl->kd = kvm_open(NULL, "/dev/null", NULL, 0, NULL);
assert(fpl->kd);
return pl;
}
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void ProcessList_delete(ProcessList* this) {
const FreeBSDProcessList* fpl = (FreeBSDProcessList*) this;
if (fpl->kd) kvm_close(fpl->kd);
ProcessList_done(this);
free(this);
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}
static inline void FreeBSDProcessList_scanMemoryInfo(ProcessList* pl) {
const FreeBSDProcessList* fpl = (FreeBSDProcessList*) pl;
size_t len = sizeof(pl->totalMem);
sysctl(MIB_hw_physmem, 2, &(pl->totalMem), &len, NULL, 0);
pl->totalMem /= 1024;
sysctl(MIB_vm_stats_vm_v_wire_count, 4, &(pl->usedMem), &len, NULL, 0);
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pl->usedMem *= pageSizeKb;
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pl->freeMem = pl->totalMem - pl->usedMem;
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sysctl(MIB_vm_stats_vm_v_cache_count, 4, &(pl->cachedMem), &len, NULL, 0);
pl->cachedMem *= pageSizeKb;
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struct kvm_swap swap[16];
int nswap = kvm_getswapinfo(fpl->kd, swap, sizeof(swap)/sizeof(swap[0]), 0);
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pl->totalSwap = 0;
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pl->usedSwap = 0;
for (int i = 0; i < nswap; i++) {
pl->totalSwap += swap[i].ksw_total;
pl->usedSwap += swap[i].ksw_used;
}
pl->totalSwap *= pageSizeKb;
pl->usedSwap *= pageSizeKb;
pl->sharedMem = 0; // currently unused
pl->buffersMem = 0; // not exposed to userspace
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}
void ProcessList_scan(ProcessList* this) {
(void) this;
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FreeBSDProcessList_scanMemoryInfo(this);
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// stub!
}