JS::SetOutOfMemoryCallback 编辑

This article covers features introduced in SpiderMonkey 31

Specify a new callback function for Out of Memory error.

Syntax

void
JS::SetOutOfMemoryCallback(JSRuntime *rt, JS::OutOfMemoryCallback cb, void *data);

Callback syntax

typedef void
(* OutOfMemoryCallback)(JSContext *cx, void *data);

Description

Unlike the error reporter, which is only called if the exception for an OOM bubbles up and is not caught, the JS::OutOfMemoryCallback is called immediately at the OOM site to allow the embedding to capture the current state of heap allocation before anything is freed. If the large-allocation-failure callback is called at all (not all allocation sites call the large-allocation-failure callback on failure), it is called before the out-of-memory callback; the out-of-memory callback is only called if the allocation still fails after the large-allocation-failure callback has returned.

JS::SetOutOfMemoryCallback sets a callback function for it.

See Also

• MXR ID Search for JS::SetOutOfMemoryCallback
• MXR ID Search for JS::OutOfMemoryCallback
• bug 969415
• bug 987995 - added data parameter