finish
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
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parent
1759bec5a9
commit
cf877845a1
@ -3,19 +3,17 @@ package sync
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import (
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import (
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"context"
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"context"
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"sync"
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"sync"
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"sync/atomic"
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)
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)
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type WaitGroup struct {
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type WaitGroup struct {
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wg *sync.WaitGroup
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wg *sync.WaitGroup
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c *atomic.Int64
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c int
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mu sync.Mutex
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mu sync.Mutex
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}
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}
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func WrapWaitGroup(wg *sync.WaitGroup) *WaitGroup {
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func WrapWaitGroup(wg *sync.WaitGroup) *WaitGroup {
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g := &WaitGroup{
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g := &WaitGroup{
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wg: wg,
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wg: wg,
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c: &(atomic.Int64{}),
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}
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}
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return g
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return g
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}
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}
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@ -27,14 +25,14 @@ func NewWaitGroup() *WaitGroup {
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func (g *WaitGroup) Add(n int) {
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func (g *WaitGroup) Add(n int) {
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g.mu.Lock()
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g.mu.Lock()
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g.c.Add(int64(n))
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g.c += n
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g.wg.Add(n)
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g.wg.Add(n)
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g.mu.Unlock()
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g.mu.Unlock()
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}
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}
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func (g *WaitGroup) Done() {
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func (g *WaitGroup) Done() {
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g.mu.Lock()
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g.mu.Lock()
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g.c.Add(int64(-1))
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g.c += -1
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g.wg.Add(-1)
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g.wg.Add(-1)
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g.mu.Unlock()
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g.mu.Unlock()
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}
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}
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@ -53,9 +51,9 @@ func (g *WaitGroup) WaitContext(ctx context.Context) {
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select {
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select {
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case <-ctx.Done():
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case <-ctx.Done():
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g.mu.Lock()
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g.mu.Lock()
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g.wg.Add(-int(g.c.Load()))
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g.wg.Add(-g.c)
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<-done
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<-done
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g.wg.Add(int(g.c.Load()))
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g.wg.Add(g.c)
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g.mu.Unlock()
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g.mu.Unlock()
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return
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return
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case <-done:
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case <-done:
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@ -64,5 +62,8 @@ func (g *WaitGroup) WaitContext(ctx context.Context) {
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}
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}
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func (g *WaitGroup) Waiters() int {
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func (g *WaitGroup) Waiters() int {
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return int(g.c.Load())
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g.mu.Lock()
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c := g.c
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g.mu.Unlock()
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return c
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}
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}
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