summaryrefslogtreecommitdiff
path: root/cmd/podman/shared/parallel.go
diff options
context:
space:
mode:
Diffstat (limited to 'cmd/podman/shared/parallel.go')
-rw-r--r--cmd/podman/shared/parallel.go112
1 files changed, 0 insertions, 112 deletions
diff --git a/cmd/podman/shared/parallel.go b/cmd/podman/shared/parallel.go
deleted file mode 100644
index eb1d40073..000000000
--- a/cmd/podman/shared/parallel.go
+++ /dev/null
@@ -1,112 +0,0 @@
-package shared
-
-import (
- "runtime"
- "sync"
-)
-
-type pFunc func() error
-
-// ParallelWorkerInput is a struct used to pass in a slice of parallel funcs to be
-// performed on a container ID
-type ParallelWorkerInput struct {
- ContainerID string
- ParallelFunc pFunc
-}
-
-type containerError struct {
- ContainerID string
- Err error
-}
-
-// ParallelWorker is a "threaded" worker that takes jobs from the channel "queue"
-func ParallelWorker(wg *sync.WaitGroup, jobs <-chan ParallelWorkerInput, results chan<- containerError) {
- for j := range jobs {
- err := j.ParallelFunc()
- results <- containerError{ContainerID: j.ContainerID, Err: err}
- wg.Done()
- }
-}
-
-// ParallelExecuteWorkerPool takes container jobs and performs them in parallel. The worker
-// int determines how many workers/threads should be premade.
-func ParallelExecuteWorkerPool(workers int, functions []ParallelWorkerInput) (map[string]error, int) {
- var (
- wg sync.WaitGroup
- errorCount int
- )
-
- resultChan := make(chan containerError, len(functions))
- results := make(map[string]error)
- paraJobs := make(chan ParallelWorkerInput, len(functions))
-
- // If we have more workers than functions, match up the number of workers and functions
- if workers > len(functions) {
- workers = len(functions)
- }
-
- // Create the workers
- for w := 1; w <= workers; w++ {
- go ParallelWorker(&wg, paraJobs, resultChan)
- }
-
- // Add jobs to the workers
- for _, j := range functions {
- j := j
- wg.Add(1)
- paraJobs <- j
- }
-
- close(paraJobs)
- wg.Wait()
-
- close(resultChan)
- for ctrError := range resultChan {
- results[ctrError.ContainerID] = ctrError.Err
- if ctrError.Err != nil {
- errorCount += 1
- }
- }
-
- return results, errorCount
-}
-
-// Parallelize provides the maximum number of parallel workers (int) as calculated by a basic
-// heuristic. This can be overridden by the --max-workers primary switch to podman.
-func Parallelize(job string) int {
- numCpus := runtime.NumCPU()
- switch job {
- case "kill":
- if numCpus <= 3 {
- return numCpus * 3
- }
- return numCpus * 4
- case "pause":
- if numCpus <= 3 {
- return numCpus * 3
- }
- return numCpus * 4
- case "ps":
- return 8
- case "restart":
- return numCpus * 2
- case "rm":
- if numCpus <= 3 {
- return numCpus * 3
- } else {
- return numCpus * 4
- }
- case "stop":
- if numCpus <= 2 {
- return 4
- } else {
- return numCpus * 3
- }
- case "unpause":
- if numCpus <= 3 {
- return numCpus * 3
- }
- return numCpus * 4
- }
- return 3
-}