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bug#28940 [Process] Adds usleep(1000) to ease CPU usage. (miniyarov)

This PR was squashed before being merged into the 4.2-dev branch (closes#28940).Discussion----------[Process] Adds usleep(1000) to ease CPU usage.| Q | A| ------------- | ---| Branch? | master| Bug fix? | yes| New feature? | no| BC breaks? | no| Deprecations? | no| Tests pass? | yes| Fixed tickets || License | MIT| Doc PR | symfony/symfony-docsCommits-------9d1416a [Process] Adds usleep(1000) to ease CPU usage.

2 parents717ff2d +9d1416a commitfc7aeb9Copy full SHA for fc7aeb9

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src/Symfony/Component/Process
- Process.php

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`‎src/Symfony/Component/Process/Process.php‎`

Lines changed: 8 additions & 3 deletions

Original file line number	Diff line number	Diff line change
`@@ -436,12 +436,10 @@ public function wait(callable $callback = null)`
`436`	`436`	`* from the output in real-time while writing the standard input to the process.`
`437`	`437`	`* It allows to have feedback from the independent process during execution.`
`438`	`438`	`*`
`439`		`- * @param callable $callback`
`440`		`- *`
`441`	`439`	`* @throws RuntimeException When process timed out`
`442`	`440`	`* @throws LogicException When process is not yet started`
`443`	`441`	`*/`
`444`		`-publicfunctionwaitUntil(callable$callback)`
	`442`	`+publicfunctionwaitUntil(callable$callback):bool`
`445`	`443`	`{`
`446`	`444`	`$this->requireProcessIsStarted(__FUNCTION__);`
`447`	`445`	`$this->updateStatus(false);`
`@@ -465,7 +463,14 @@ public function waitUntil(callable $callback)`
`465`	`463`	`$this->fallbackStatus['exitcode'] = (int)$data;`
`466`	`464`	`}`
`467`	`465`	`}`
	`466`	`+if ($wait && !$this->isRunning()) {`
	`467`	`+returnfalse;`
	`468`	`+ }`
	`469`	`+`
	`470`	`+usleep(1000);`
`468`	`471`	`}while ($wait);`
	`472`	`+`
	`473`	`+returntrue;`
`469`	`474`	`}`
`470`	`475`
`471`	`476`	`/**`

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Commitfc7aeb9

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`‎src/Symfony/Component/Process/Process.php‎`

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