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JS::SetLargeAllocationFailureCallback 编辑

This article covers features introduced in SpiderMonkey 31

Specify a new callback function for large memory allocation failure.

Syntax

void
JS::SetLargeAllocationFailureCallback(JSRuntime *rt,
                                      JS::LargeAllocationFailureCallback afc,
                                      void *data);

Name	Type	Description
`rt`	`JSRuntime *`	The `JSRuntime` for which to set the GC callback.
`cb`	`JS::LargeAllocationFailureCallback`	Pointer to the new callback function to use.
`data`	`void *`	`data` parameter which will be passed to `JS::LargeAllocationFailureCallback`. Added in SpiderMonkey 38

Callback syntax

typedef void
(* JS::LargeAllocationFailureCallback)(void *data);

Name	Type	Description
`data`	`void *`	`data` parameter passed to `JS::SetLargeAllocationFailureCallback`. Added in SpiderMonkey 38

If a large allocation fails when calling pod_{calloc,realloc}CanGC, the JS engine may call the large-allocation- failure callback, if set, to allow the embedding to flush caches, possibly perform shrinking GCs, etc. to make some room. The allocation will then be retried (and may still fail.)

JS::SetLargeAllocationFailureCallback sets a callback function for it.

JS::SetLargeAllocationFailureCallback 编辑

Syntax

Callback syntax

Description

See Also

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友情链接

JS::SetLargeAllocationFailureCallback 编辑

Syntax

Callback syntax

Description

See Also

如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

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友情链接

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。