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日志输出，空指针导致程序出错-测试获取帧

This commit is contained in:
lijun 2025-01-15 23:47:37 +08:00
parent 75d8492618
commit 647def1279
1 changed files with 13 additions and 7 deletions
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20
service/tool.go
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@ -40,35 +40,41 @@ func SetDeviceCurrentFrame(frame gocv.Mat, device_id int) error {
return nil
}
func GetDeviceCurrentFrame(device_id int) (gocv.Mat, int) {
func GetDeviceCurrentFrame(deviceId int) (gocv.Mat, int) {
defer func() {
if err := recover(); err != nil {
log.Printf("设备:%d 错误: %v\n", deviceId, err)
}
}()
//获取读写锁
mutex_, ok := DeviceRWMap.Load(device_id)
mutex_, ok := DeviceRWMap.Load(deviceId)
if !ok {
return gocv.NewMat(), -1
}
mutex, ok := mutex_.(*sync.RWMutex)
if !ok {
log.Printf("DeviceRWMap 存储的不是 *sync.RWMutex 类型，device_id: %d", device_id)
log.Printf("DeviceRWMap 存储的不是 *sync.RWMutex 类型，device_id: %d", deviceId)
return gocv.NewMat(), -1
}
mutex.RLock()
defer mutex.RUnlock()
//获取当前帧
frameIface, ok := DeviceCurrentFrameMap.Load(device_id)
frameIface, ok := DeviceCurrentFrameMap.Load(deviceId)
if !ok {
return gocv.NewMat(), -1
}
frame, ok := frameIface.(gocv.Mat)
if !ok {
log.Printf("DeviceCurrentFrameMap 存储的不是 gocv.Mat 类型，device_id: %d", device_id)
log.Printf("DeviceCurrentFrameMap 存储的不是 gocv.Mat 类型，device_id: %d", deviceId)
}
frame_countIface, ok := DeviceFrameCount.Load(device_id)
frame_countIface, ok := DeviceFrameCount.Load(deviceId)
if !ok {
return gocv.NewMat(), -1
}
frame_count, ok := frame_countIface.(int)
if !ok {
log.Printf("DeviceFrameCount 存储的不是 int 类型，device_id: %d", device_id)
log.Printf("DeviceFrameCount 存储的不是 int 类型，device_id: %d", deviceId)
}
return frame, frame_count
}