mudhorn/node_exporter
1
0
Fork 0
mirror of https://github.com/prometheus/node_exporter.git synced 2025-08-20 18:33:52 -07:00
Code Issues Actions Packages Projects Releases Wiki Activity

Avoid memory leak by using value rather than reference. (#3277)

Browse source 
Signed-off-by: Rolf Klemenz <tickez@madnet.ch>
This commit is contained in:
Rolf Klemenz 2025-03-26 15:30:46 +01:00 committed by GitHub
parent 5d458955be
commit 47e2bb34ce
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
2 changed files with 11 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
collector/filesystem_common.go
View file

@ -89,7 +89,7 @@ type filesystemStats struct {
labels filesystemLabels
size, free, avail float64
files, filesFree float64
purgeable *float64
purgeable float64
ro, deviceError float64
}
@ -232,11 +232,10 @@ func (c *filesystemCollector) Update(ch chan<- prometheus.Metric) error {
c.mountInfoDesc, prometheus.GaugeValue,
1.0, s.labels.device, s.labels.major, s.labels.minor, s.labels.mountPoint,
)
if s.purgeable != nil {
if s.purgeable >= 0 {
ch <- prometheus.MustNewConstMetric(
c.purgeableDesc, prometheus.GaugeValue,
*s.purgeable, s.labels.device, s.labels.mountPoint,
s.labels.fsType, s.labels.deviceError,
s.purgeable, s.labels.device, s.labels.mountPoint, s.labels.fsType, s.labels.deviceError,
)
}
}

17
collector/filesystem_macos.go
View file

@ -20,23 +20,22 @@ package collector
#cgo CFLAGS: -x objective-c
#cgo LDFLAGS: -framework Foundation
#import <Foundation/Foundation.h>
Float64 *purgeable(char *path) {
Float64 purgeable(char *path) {
CFNumberRef tmp;
Float64 *value;
NSError *error = nil;
NSString *str = [NSString stringWithUTF8String:path];
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:str];
NSDictionary *results = [fileURL resourceValuesForKeys:@[NSURLVolumeAvailableCapacityForImportantUsageKey] error:&error];
if (results) {
if ((tmp = CFDictionaryGetValue((CFDictionaryRef)results, NSURLVolumeAvailableCapacityForImportantUsageKey)) == NULL)
return NULL;
value = (Float64 *)malloc(sizeof(Float64));
if (CFNumberGetValue(tmp, kCFNumberFloat64Type, value)) {
if ((tmp = CFDictionaryGetValue((CFDictionaryRef)results, NSURLVolumeAvailableCapacityForImportantUsageKey)) == NULL) {
return -1.0f;
}
Float64 value;
if (CFNumberGetValue(tmp, kCFNumberFloat64Type, &value)) {
return value;
}
}
free(value);
return NULL;
return -1.0f;
}
*/
import "C"
@ -100,7 +99,7 @@ func (c *filesystemCollector) GetStats() (stats []filesystemStats, err error) {
avail: float64(mnt[i].f_bavail) * float64(mnt[i].f_bsize),
files: float64(mnt[i].f_files),
filesFree: float64(mnt[i].f_ffree),
purgeable: (*float64)(C.purgeable(C.CString(mountpoint))),
purgeable: float64(C.purgeable(C.CString(mountpoint))),
ro: ro,
})
}