ston1th/node_exporter
0
0
Fork 0
Code Issues Releases Activity

add diskstats on Darwin (#593)

Browse source 
* Add diskstats collector for Darwin

* Update year in the header

* Update README.md

* Add github.com/lufia/iostat to vendored packages

* Change stats to follow naming guidelines

* Add a entry of github.com/lufia/iostat into vendor.json

* Remove /proc/diskstats from description
This commit is contained in:
kadota kyohei 2017-07-06 20:51:24 +09:00 • committed by Johannes 'fish' Ziemke
commit a077024f51
10 changed files with 440 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

128
vendor/github.com/lufia/iostat/iostat_darwin.c generated vendored Normal file
View file

@ -0,0 +1,128 @@
#include <stdint.h>
#include "iostat_darwin.h"
#define IOKIT 1 /* to get io_name_t in device_types.h */
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/storage/IOBlockStorageDriver.h>
#include <IOKit/storage/IOMedia.h>
#include <IOKit/IOBSD.h>
static int getdrivestat(io_registry_entry_t d, DriveStats *stat);
static int fillstat(io_registry_entry_t d, DriveStats *stat);
int
readdrivestat(DriveStats a[], int n)
{
mach_port_t port;
CFMutableDictionaryRef match;
io_iterator_t drives;
io_registry_entry_t d;
kern_return_t status;
int na, rv;
IOMasterPort(bootstrap_port, &port);
match = IOServiceMatching("IOMedia");
CFDictionaryAddValue(match, CFSTR(kIOMediaWholeKey), kCFBooleanTrue);
status = IOServiceGetMatchingServices(port, match, &drives);
if(status != KERN_SUCCESS)
return -1;
na = 0;
while(na < n && (d=IOIteratorNext(drives)) > 0){
rv = getdrivestat(d, &a[na]);
if(rv < 0)
return -1;
if(rv > 0)
na++;
IOObjectRelease(d);
}
IOObjectRelease(drives);
return na;
}
static int
getdrivestat(io_registry_entry_t d, DriveStats *stat)
{
io_registry_entry_t parent;
kern_return_t status;
CFDictionaryRef props;
CFStringRef name;
CFNumberRef num;
int rv;
memset(stat, 0, sizeof *stat);
status = IORegistryEntryGetParentEntry(d, kIOServicePlane, &parent);
if(status != KERN_SUCCESS)
return -1;
if(!IOObjectConformsTo(parent, "IOBlockStorageDriver")){
IOObjectRelease(parent);
return 0;
}
status = IORegistryEntryCreateCFProperties(d, (CFMutableDictionaryRef *)&props, kCFAllocatorDefault, kNilOptions);
if(status != KERN_SUCCESS){
IOObjectRelease(parent);
return -1;
}
name = (CFStringRef)CFDictionaryGetValue(props, CFSTR(kIOBSDNameKey));
CFStringGetCString(name, stat->name, NAMELEN, CFStringGetSystemEncoding());
num = (CFNumberRef)CFDictionaryGetValue(props, CFSTR(kIOMediaSizeKey));
CFNumberGetValue(num, kCFNumberSInt64Type, &stat->size);
num = (CFNumberRef)CFDictionaryGetValue(props, CFSTR(kIOMediaPreferredBlockSizeKey));
CFNumberGetValue(num, kCFNumberSInt64Type, &stat->blocksize);
CFRelease(props);
rv = fillstat(parent, stat);
IOObjectRelease(parent);
if(rv < 0)
return -1;
return 1;
}
static struct {
char *key;
size_t off;
} statstab[] = {
{kIOBlockStorageDriverStatisticsBytesReadKey, offsetof(DriveStats, read)},
{kIOBlockStorageDriverStatisticsBytesWrittenKey, offsetof(DriveStats, written)},
{kIOBlockStorageDriverStatisticsReadsKey, offsetof(DriveStats, nread)},
{kIOBlockStorageDriverStatisticsWritesKey, offsetof(DriveStats, nwrite)},
{kIOBlockStorageDriverStatisticsTotalReadTimeKey, offsetof(DriveStats, readtime)},
{kIOBlockStorageDriverStatisticsTotalWriteTimeKey, offsetof(DriveStats, writetime)},
{kIOBlockStorageDriverStatisticsLatentReadTimeKey, offsetof(DriveStats, readlat)},
{kIOBlockStorageDriverStatisticsLatentWriteTimeKey, offsetof(DriveStats, writelat)},
};
static int
fillstat(io_registry_entry_t d, DriveStats *stat)
{
CFDictionaryRef props, v;
CFNumberRef num;
kern_return_t status;
typeof(statstab[0]) *bp, *ep;
status = IORegistryEntryCreateCFProperties(d, (CFMutableDictionaryRef *)&props, kCFAllocatorDefault, kNilOptions);
if(status != KERN_SUCCESS)
return -1;
v = (CFDictionaryRef)CFDictionaryGetValue(props, CFSTR(kIOBlockStorageDriverStatisticsKey));
if(v == NULL){
CFRelease(props);
return -1;
}
ep = &statstab[sizeof(statstab)/sizeof(statstab[0])];
for(bp = &statstab[0]; bp < ep; bp++){
CFStringRef s;
s = CFStringCreateWithCString(kCFAllocatorDefault, bp->key, CFStringGetSystemEncoding());
num = (CFNumberRef)CFDictionaryGetValue(v, s);
if(num)
CFNumberGetValue(num, kCFNumberSInt64Type, ((char*)stat)+bp->off);
CFRelease(s);
}
CFRelease(props);
return 0;
}