mirror of
https://github.com/fluencelabs/assemblyscript
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27 lines
904 B
Markdown
27 lines
904 B
Markdown
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#  rtrace
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A tiny utility that records allocations, retains, releases and frees performed by the runtime and emits an error if something is off. Also checks for leaks.
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Instructions
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------------
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Compile your module that uses the full or half runtime with `-use ASC_RTRACE=1` and include an instance of this module as the import named `rtrace`.
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```js
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var rtr = rtrace(e => {
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// handle error
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});
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WebAssembly.instantiate(..., { rtrace: rtr, ... });
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...
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if (rtr.active) {
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let leakCount = rtr.leakCount;
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if (leakCount) {
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// handle error
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}
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}
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```
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Note that references retained in globals which are not cleared before execution concludes appear as leaks, including their inner members. A TypedArray would leak itself and its backing ArrayBuffer in this case for example. This is perfectly normal and clearing all globals avoids this.
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