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runtime/trace: remove remaining NewContext reference

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This is a documentation error.

Change-Id: I083021f151f7e80a0b9083b98452ae1f5920640d
Reviewed-on: https://go-review.googlesource.com/115598
Reviewed-by: Peter Weinberger <pjw@google.com>
This commit is contained in:
Hana Kim 2018-05-31 16:14:04 -04:00 committed by Hyang-Ah Hana Kim
parent b280edb89e
commit c7519f0dae
1 changed files with 21 additions and 20 deletions
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41
src/runtime/trace/trace.go
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@ -70,7 +70,7 @@
// operations such as an RPC request, an HTTP request, or an
// interesting local operation which may require multiple goroutines
// working together. Since tasks can involve multiple goroutines,
// they are tracked via a context.Context object. NewContext creates
// they are tracked via a context.Context object. NewTask creates
// a new task and embeds it in the returned context.Context object.
// Log messages and regions are attached to the task, if any, in the
// Context passed to Log and WithRegion.
@ -80,26 +80,27 @@
// the trace tool can identify the goroutines involved in a specific
// cappuccino order.
//
// ctx, taskEnd:= trace.NewContext(ctx, "makeCappuccino")
// trace.Log(ctx, "orderID", orderID)
// ctx, task := trace.NewTask(ctx, "makeCappuccino")
// trace.Log(ctx, "orderID", orderID)
// milk := make(chan bool)
// espresso := make(chan bool)
// go func() {
// trace.WithRegion(ctx, "steamMilk", steamMilk)
// milk <- true
// }()
// go func() {
// trace.WithRegion(ctx, "extractCoffee", extractCoffee)
// espresso <- true
// }()
// go func() {
// defer task.End() // When assemble is done, the order is complete.
// <-espresso
// <-milk
// trace.WithRegion(ctx, "mixMilkCoffee", mixMilkCoffee)
// }()
//
// milk := make(chan bool)
// espresso := make(chan bool)
//
// go func() {
// trace.WithRegion(ctx, "steamMilk", steamMilk)
// milk<-true
// })()
// go func() {
// trace.WithRegion(ctx, "extractCoffee", extractCoffee)
// espresso<-true
// })()
// go func() {
// defer taskEnd() // When assemble is done, the order is complete.
// <-espresso
// <-milk
// trace.WithRegion(ctx, "mixMilkCoffee", mixMilkCoffee)
// })()
//
// The trace tool computes the latency of a task by measuring the
// time between the task creation and the task end and provides