74 lines
1.5 KiB
Go
74 lines
1.5 KiB
Go
package services
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import (
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"cmii-uav-watchdog-common/models"
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"fmt"
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"os"
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"strconv"
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"strings"
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)
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// NewMemoryInfo creates a new MemoryInfo instance with default values.
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func NewMemoryInfo() models.MemoryInfo {
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return models.MemoryInfo{
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Total: 0,
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Free: 0,
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Available: 0,
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Used: 0,
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Buffers: 0,
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Cached: 0,
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Shared: 0,
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}
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}
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// GetMemoryInfo reads memory information from /proc/meminfo.
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func GetMemoryInfo() models.MemoryInfo {
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memInfo := NewMemoryInfo()
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data, err := os.ReadFile("/proc/meminfo")
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if err != nil {
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fmt.Println("Error reading /proc/meminfo:", err)
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return memInfo
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}
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lines := strings.Split(string(data), "\n")
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for _, line := range lines {
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fields := strings.Fields(line)
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if len(fields) < 2 {
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continue
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}
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key := fields[0]
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value, err := strconv.ParseUint(fields[1], 10, 64)
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if err != nil {
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fmt.Printf("Error parsing value for %s: %v\n", key, err)
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continue
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}
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switch key {
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case "MemTotal:":
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memInfo.Total = value
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case "MemFree:":
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memInfo.Free = value
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case "MemAvailable:":
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memInfo.Available = value
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case "Buffers:":
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memInfo.Buffers = value // 存储 Buffers 值
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case "Cached:":
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memInfo.Cached = value // 存储 Cached 值
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case "Shmem:":
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memInfo.Shared = value // 存储 Shared 值
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}
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}
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// 计算已用内存
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memInfo.Used = memInfo.Total - memInfo.Free - memInfo.Buffers - memInfo.Cached - memInfo.Shared
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return memInfo
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}
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/*
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Total Memory: 16384228 kB
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Free Memory: 1234567 kB
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Available Memory: 2345678 kB
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*/
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