1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
#include "diskio.h"
#include "common/strutil.h"
#include "common/mallocHelper.h"
#include <sys/disk.h>
#include <sys/sysctl.h>
const char* ffDiskIOGetIoCounters(FFlist* result, FFDiskIOOptions* options) {
int mib[] = { CTL_HW, HW_DISKSTATS };
size_t len;
if (sysctl(mib, ARRAY_SIZE(mib), NULL, &len, NULL, 0) < 0) {
return "sysctl({HW_DISKSTATS}, NULL) failed";
}
uint32_t nDrive = (uint32_t) (len / sizeof(struct diskstats));
FF_AUTO_FREE struct diskstats* stats = malloc(len);
if (sysctl(mib, ARRAY_SIZE(mib), stats, &len, NULL, 0) < 0) {
return "sysctl({HW_DISKSTATS}, stats) failed";
}
for (uint32_t i = 0; i < nDrive; ++i) {
struct diskstats* st = &stats[i];
if (options->namePrefix.length && strncmp(st->ds_name, options->namePrefix.chars, options->namePrefix.length) != 0) {
continue;
}
FFDiskIOResult* device = FF_LIST_ADD(FFDiskIOResult, *result);
ffStrbufInitF(&device->devPath, "/dev/%s", st->ds_name);
ffStrbufInitS(&device->name, st->ds_name);
device->bytesRead = st->ds_rbytes;
device->readCount = st->ds_rxfer;
device->bytesWritten = st->ds_wbytes;
device->writeCount = st->ds_wxfer;
}
return NULL;
}
|
