1 files changed, 6 insertions, 0 deletions
diff --git a/jwg.go b/jwg.go
index a7fd343..5b4f8a8 100644
--- a/jwg.go
+++ b/jwg.go
@@ -7,12 +7,15 @@ import (
 	"time"
 )
 
+// JobWaitGroup is like sync.WaitGroup, but keeps track of job status,
+// and tracks how long each job took.
 type JobWaitGroup struct {
 	lock sync.RWMutex
 	jobs map[string]time.Duration
 	wg   sync.WaitGroup
 }
 
+// Do a job.
 func (jwg *JobWaitGroup) Do(name string, fn func()) {
 	jwg.lock.Lock()
 	defer jwg.lock.Unlock()
@@ -37,11 +40,14 @@ func (jwg *JobWaitGroup) Do(name string, fn func()) {
 	}()
 }
 
+// Wait for all jobs to finish, and return how long each job took.
 func (jwg *JobWaitGroup) Wait() map[string]time.Duration {
 	jwg.wg.Wait()
 	return jwg.jobs
 }
 
+// Status returns the total number of jobs that have been started, and
+// a list of still-running jobs.
 func (jwg *JobWaitGroup) Status() (int, []string) {
 	jwg.lock.RLock()