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Diffstat (limited to 'v_windows/v/old/vlib/context/deadline_test.v')
-rw-r--r-- | v_windows/v/old/vlib/context/deadline_test.v | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/v_windows/v/old/vlib/context/deadline_test.v b/v_windows/v/old/vlib/context/deadline_test.v new file mode 100644 index 0000000..e4d7280 --- /dev/null +++ b/v_windows/v/old/vlib/context/deadline_test.v @@ -0,0 +1,48 @@ +import context +import time + +const ( + // a reasonable duration to block in an example + short_duration = 1 * time.millisecond +) + +// This example passes a context with an arbitrary deadline to tell a blocking +// function that it should abandon its work as soon as it gets to it. +fn test_with_deadline() { + dur := time.now().add(short_duration) + ctx := context.with_deadline(context.background(), dur) + + defer { + // Even though ctx will be expired, it is good practice to call its + // cancellation function in any case. Failure to do so may keep the + // context and its parent alive longer than necessary. + context.cancel(ctx) + } + + ctx_ch := ctx.done() + select { + _ := <-ctx_ch {} + 1 * time.second { + panic('This should not happen') + } + } +} + +// This example passes a context with a timeout to tell a blocking function that +// it should abandon its work after the timeout elapses. +fn test_with_timeout() { + // Pass a context with a timeout to tell a blocking function that it + // should abandon its work after the timeout elapses. + ctx := context.with_timeout(context.background(), short_duration) + defer { + context.cancel(ctx) + } + + ctx_ch := ctx.done() + select { + _ := <-ctx_ch {} + 1 * time.second { + panic('This should not happen') + } + } +} |