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[util.go] Optimisation by comparing high part of byte to 3 (numbers in ASCII are going from 0x30 to 0x39). And convert the whole number only if it is PID we are looking for.

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This commit is contained in:
Alexander Andreev 2022-01-06 03:22:38 +04:00
parent a67ecc9c3d
commit 316c932ac2
Signed by: Arav
GPG Key ID: 1327FE8A374CC86F
1 changed files with 4 additions and 4 deletions
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8
util.go
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@ -16,14 +16,14 @@ func GetProcessPIDs(name string) ([]int, error) {
} }
for _, entry := range dir { for _, entry := range dir {
pid, err := strconv.Atoi(entry.Name()) if entry.IsDir() && entry.Name()[0]>>0x4&0xf == 0x3 {
if entry.IsDir() && err == nil { cmdline, err := os.ReadFile("/proc/" + entry.Name() + "/cmdline")
f, err := os.ReadFile("/proc/" + entry.Name() + "/cmdline")
if err != nil { if err != nil {
return nil, err return nil, err
} }
if strings.Contains(string(f), name) { if strings.Contains(string(cmdline), name) {
pid, _ := strconv.Atoi(entry.Name())
pids = append(pids, pid) pids = append(pids, pid)
} }
} }