diff options
Diffstat (limited to 'src/sync/map.go')
| -rw-r--r-- | src/sync/map.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/sync/map.go b/src/sync/map.go index 2fa3253429..ec529e056b 100644 --- a/src/sync/map.go +++ b/src/sync/map.go @@ -24,6 +24,13 @@ import ( // contention compared to a Go map paired with a separate Mutex or RWMutex. // // The zero Map is empty and ready for use. A Map must not be copied after first use. +// +// In the terminology of the Go memory model, Map arranges that a write operation +// “synchronizes before” any read operation that observes the effect of the write, where +// read and write operations are defined as follows. +// Load, LoadAndDelete, LoadOrStore are read operations; +// Delete, LoadAndDelete, and Store are write operations; +// and LoadOrStore is a write operation when it returns loaded set to false. type Map struct { mu Mutex |