instances

const (
	// MAX_INSTANCES is the max number of concurrent skiaserve instances we
	// support in the hosted environment.
	MAX_INSTANCES = 200

	// MIN_POOL_SIZE is the number of available spots in the pool that should be
	// maintained at all times. Instances will be culled by oldest lastUsed time
	// until this size is reached.
	MIN_POOL_SIZE = 10

	// START_PORT Is the beginning of the range of ports the skiaserve instances
	// will communicate on.
	START_PORT = 30000

	// START_WAIT_NUM poll the newly started skiaserve this many times before giving up.
	START_WAIT_NUM = 50

	// START_WAIT_PERIOD poll the newly started skiaserve this often.
	START_WAIT_PERIOD = 100 * time.Millisecond

	// EXIT_WAIT_PERIOD is the time to wait for the instance to exit.
	EXIT_WAIT_PERIOD = 2 * time.Second

	// SKIASERVE is the full path to the skiaserve executable.
	SKIASERVE = "/usr/local/bin/skiaserve"
)