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Trigger GC when idle #77
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CC: @nodejs/node-chakracore |
| @@ -84,6 +86,9 @@ class IsolateShim { | |||
| void DisableExecution(); | |||
| bool IsExeuctionDisabled(); | |||
| void EnableExecution(); | |||
| static inline bool ShouldScheduleIdleGc() { | |||
| return v8::g_shouldScheduleIdleGc; | |||
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LGTM |
Added a task in prepare queue that will schedule `IdleGC` task if there is no idleGc task currently scheduled or if there was some javascript script execution happened. `IdleGC` will basically call [JsIdle](https://github.com/Microsoft/ChakraCore/wiki/JsIdle) and if it didn't succeed, it will schedule another `IdleGC` task after (nextTick - currentTick) ms. If this task succeeded, we don't have to do anything and next time prepareQueue task will be executed, it will decide if it should re-schedule `IdleGC` or not. Also include flag `--off_idlegc` to turn idleGC feature off. PR-URL: nodejs#77 Reviewed-By: Curtis Man <CurtisM@microsoft.com>
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Checklist
Affected core subsystem(s)
deps,src
Description of change
Chakracore has JsIdle API that a host can trigger to perform memory cleanp tasks whenever it is idle. In order to achieve this added a scheduler that will schedule idle GC in prepare queue after 1 second the last script execution started. When there are no more scripts to execute, task in
prepare queuewould get executed which will triggerJsIdle.JsIdlereturns tickCount until there will be more idle work to do. It can also return maximum tickCount that signifies that there is no idle work to perform. Based on the return value of this API, decide whether there is a needto reschedule another
JsIdleor not.With this implementation chakrashim takes dependency on
libuv.