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authorLibravatar kim <grufwub@gmail.com>2025-09-09 16:12:29 +0200
committerLibravatar kim <gruf@noreply.codeberg.org>2025-09-09 16:12:29 +0200
commitc949b9f2d137f37c8c93c916caacb182e6070e90 (patch)
tree846c6993bb27033547724c9d4b47401c7fef7ab2 /vendor/github.com/sourcegraph/conc/pool/result_context_pool.go
parent[chore] update dependencies (#4422) (diff)
downloadgotosocial-c949b9f2d137f37c8c93c916caacb182e6070e90.tar.xz
[chore] update dependencies (#4423)
- codeberg.org/gruf/go-ffmpreg: v0.6.10 -> v0.6.11 - github.com/spf13/cast: v1.9.2 -> v1.10.0 - github.com/spf13/viper: v1.20.1 -> v1.21.0 - golang.org/x/crypto: v0.41.0 -> v0.42.0 - golang.org/x/image: v0.30.0 -> v0.31.0 Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4423 Co-authored-by: kim <grufwub@gmail.com> Co-committed-by: kim <grufwub@gmail.com>
Diffstat (limited to 'vendor/github.com/sourcegraph/conc/pool/result_context_pool.go')
-rw-r--r--vendor/github.com/sourcegraph/conc/pool/result_context_pool.go85
1 files changed, 85 insertions, 0 deletions
diff --git a/vendor/github.com/sourcegraph/conc/pool/result_context_pool.go b/vendor/github.com/sourcegraph/conc/pool/result_context_pool.go
new file mode 100644
index 000000000..6bc30dd63
--- /dev/null
+++ b/vendor/github.com/sourcegraph/conc/pool/result_context_pool.go
@@ -0,0 +1,85 @@
+package pool
+
+import (
+ "context"
+)
+
+// ResultContextPool is a pool that runs tasks that take a context and return a
+// result. The context passed to the task will be canceled if any of the tasks
+// return an error, which makes its functionality different than just capturing
+// a context with the task closure.
+//
+// The configuration methods (With*) will panic if they are used after calling
+// Go() for the first time.
+type ResultContextPool[T any] struct {
+ contextPool ContextPool
+ agg resultAggregator[T]
+ collectErrored bool
+}
+
+// Go submits a task to the pool. If all goroutines in the pool
+// are busy, a call to Go() will block until the task can be started.
+func (p *ResultContextPool[T]) Go(f func(context.Context) (T, error)) {
+ idx := p.agg.nextIndex()
+ p.contextPool.Go(func(ctx context.Context) error {
+ res, err := f(ctx)
+ p.agg.save(idx, res, err != nil)
+ return err
+ })
+}
+
+// Wait cleans up all spawned goroutines, propagates any panics, and
+// returns an error if any of the tasks errored.
+func (p *ResultContextPool[T]) Wait() ([]T, error) {
+ err := p.contextPool.Wait()
+ results := p.agg.collect(p.collectErrored)
+ p.agg = resultAggregator[T]{}
+ return results, err
+}
+
+// WithCollectErrored configures the pool to still collect the result of a task
+// even if the task returned an error. By default, the result of tasks that errored
+// are ignored and only the error is collected.
+func (p *ResultContextPool[T]) WithCollectErrored() *ResultContextPool[T] {
+ p.panicIfInitialized()
+ p.collectErrored = true
+ return p
+}
+
+// WithFirstError configures the pool to only return the first error
+// returned by a task. By default, Wait() will return a combined error.
+func (p *ResultContextPool[T]) WithFirstError() *ResultContextPool[T] {
+ p.panicIfInitialized()
+ p.contextPool.WithFirstError()
+ return p
+}
+
+// WithCancelOnError configures the pool to cancel its context as soon as
+// any task returns an error. By default, the pool's context is not
+// canceled until the parent context is canceled.
+func (p *ResultContextPool[T]) WithCancelOnError() *ResultContextPool[T] {
+ p.panicIfInitialized()
+ p.contextPool.WithCancelOnError()
+ return p
+}
+
+// WithFailFast is an alias for the combination of WithFirstError and
+// WithCancelOnError. By default, the errors from all tasks are returned and
+// the pool's context is not canceled until the parent context is canceled.
+func (p *ResultContextPool[T]) WithFailFast() *ResultContextPool[T] {
+ p.panicIfInitialized()
+ p.contextPool.WithFailFast()
+ return p
+}
+
+// WithMaxGoroutines limits the number of goroutines in a pool.
+// Defaults to unlimited. Panics if n < 1.
+func (p *ResultContextPool[T]) WithMaxGoroutines(n int) *ResultContextPool[T] {
+ p.panicIfInitialized()
+ p.contextPool.WithMaxGoroutines(n)
+ return p
+}
+
+func (p *ResultContextPool[T]) panicIfInitialized() {
+ p.contextPool.panicIfInitialized()
+}