mirror of
https://github.com/hanzoai/tasks.git
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Alex ShtinandGitHub
8e8f1b0f7c
## What changed?
<!-- Describe what has changed in this PR -->
Remove license header from every file. Because it is really hard to
follow in this PR here is the summary:
1. License header is removed from all `.go` and `.proto` files
:fireworks::fireworks:🎆.
2. `LICENSE` file in the root directory has only Temporal and Uber
copyrights.
3. 5 other `LICENSE` files added to the packages which have copyrights
different from Temporal and Uber: Datadog, Xargin, "Mat Ryer, Tyler
Bunnell and contributors".
4. `license_file` flag is removed from all code generation tools.
5. `copyright_file` flag is removed from `go:generate mockgen`
directive.
6. All copyright related targets are removed from `Makefile`.
7. Updated Temporal copyright year to 2025 everywhere.
## Why?
<!-- Tell your future self why have you made these changes -->
I double checked with legal department that it is not needed to have
license header in every file. One file per repo is enough. I put all
copyrights to the root `LICENSE` file and removed header from all other
files. Also updated tools and `Makefile`.
72 lines
2.0 KiB
Go
72 lines
2.0 KiB
Go
package goro
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import (
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"context"
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"sync/atomic"
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)
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type (
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// Handle is a threadsafe and multi-stop safe handle to a single running
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// goroutine.
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Handle struct {
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context context.Context
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cancel context.CancelFunc
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done chan struct{}
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err atomic.Value
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}
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)
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// NewHandle creates a *Handle that serves as a handle to a goroutine. The
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// caller should call Go exactly once on the returned value. NewHandle and Go
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// are separate function so that the *Handle can be stored into a field before
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// the goroutine starts, which makes it possible for the goroutine to call
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// Done() on itself (maybe indirectly) without a race condition.
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func NewHandle(ctx context.Context) *Handle {
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ctx, cancel := context.WithCancel(ctx)
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return &Handle{
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context: ctx,
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cancel: cancel,
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done: make(chan struct{}),
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}
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}
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// Go launches the supplied function in its own goroutine. Go should be called
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// exactly once on each *Handle.
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func (h *Handle) Go(f func(context.Context) error) *Handle {
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go func() {
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// use defer here so that the channel is closed even if the func calls
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// runtime.Goexit()
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defer close(h.done)
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if err := f(h.context); err != nil {
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h.err.Store(err)
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}
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}()
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return h
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}
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// Done exposes a channel that allows outside goroutines to block on this
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// goroutine's completion. Whatever time passes between a call to Cancel() and
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// the Done() channel closing is the time taken by the goroutine to shut itself
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// down.
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func (h *Handle) Done() <-chan struct{} {
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return h.done
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}
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// Cancel requests that this goroutine stop by cancelling the associated context
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// object. This function is threadsafe and idempotent. Note that this function
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// _requests_ termination, it does not forcefully kill the goroutine.
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func (h *Handle) Cancel() {
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h.cancel()
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}
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// Error observes the error returned by the func passed to Go (if any). There is
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// never any error (i.e. this function returns nil) while the goroutine is
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// running.
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func (h *Handle) Err() error {
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v := h.err.Load()
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if v == nil {
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return nil
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}
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return v.(error)
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}
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