Philosophers” を Go で解く（CLI）

$ go run github.com/spiegel-im-spiegel/philo -h
Simulation for philosophers' problem.

Usage:
  philo [flags]
  philo [command]

Available Commands:
  help        Help about any command
  version     print the version number

Flags:
      --debug   for debug
  -h, --help    help for philo

Use "philo [command] --help" for more information about a command.

// Params holds tunable configuration values for a Dining Philosophers simulation.
type Params struct {
	NumPhilos int // Total number of philosophers (and forks). Must be >= 2.
	TimeDie   int // Maximum time in milliseconds a philosopher can go without eating before being considered dead.
	TimeEat   int // Time in milliseconds a philosopher spends eating (holding both forks).
	TimeSleep int // Time in milliseconds a philosopher sleeps after eating.
	TimeThink int // Optional target time in milliseconds a philosopher thinks after sleeping.
	NumEat    int // Optional target number of meals each philosopher must consume; if == 0 the simulation runs until a death occurs.
}

// String returns a human-readable summary of the Params configuration,
// listing the number of philosophers, each lifecycle duration (die, eat,
// sleep, think in milliseconds), and the required number of meals.
// Example:
//
//	Philosophers: 5, Die: 800ms, Eat: 200ms, Sleep: 200ms, Think: 0ms, Eat Count: 3
func (p *Params) String() string {
	return fmt.Sprintf("Philosophers: %d, Die: %dms, Eat: %dms, Sleep: %dms, Think: %dms, Eat Count: %d",
		p.NumPhilos, p.TimeDie, p.TimeEat, p.TimeSleep, p.TimeThink, p.NumEat)
}

$ go run github.com/spiegel-im-spiegel/philo -h
Simulation for philosophers' problem.

Usage:
  philo [flags]
  philo [command]

Available Commands:
  help        Help about any command
  version     print the version number

Flags:
      --debug              for debug
  -h, --help               help for philo
  -m, --must-eat int       number of times each philosopher must eat (default 3)
  -p, --philosophers int   number of philosophers (default 5)
  -d, --to-die int         time to die (ms) (default 200)
  -e, --to-eat int         time to eat (ms) (default 20)
  -s, --to-sleep int       time to sleep (ms) (default 80)
  -t, --to-think int       time to think (ms) (default 80)

Use "philo [command] --help" for more information about a command.

$ go run github.com/spiegel-im-spiegel/philo -h
Philosophers: 5, Die: 200ms, Eat: 20ms, Sleep: 80ms, Think: 80ms, Eat Count: 3