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Wasmer

Wasmer is a organization dedicated to the advancement and development of WebAssembly through open-source software.

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# runtime
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# wapm-cli
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Trying to run AssemblyScript quick start in Wasmer

Hi everyone! I'm starting to adopt wasmer in my project to develop an ability to run untrusted code written in assemblyscript. Starting with simple AssemblyScript example shown here: https://docs.assemblyscript.org/quick-start. …

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WASI syscalls control

As I wrote in previous topic I need to run untrusted code inside Wasmer-runtime. I need this code to not have control over system resources. Am I getting it right that by default wasmer don't generates imports for syscalls and If I need to let user make syscalls I need to…

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__chkstk on AArch64

I've found an interesting pull request in wasmtime: https://github.com/bytecodealliance/wasmtime/pull/800 I'm not sure of the details, so let me ask you: Can this be applied here?…

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Why wasm vms take so much memory?

I noticed that wasm "vm" is very large. Even for a trivial wasm binary (just several kilobytes) the size of the vm is ~ 15 MB. Cannot understand what makes the vm so large.

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Select Compiler Backend From Golang

I am using the Golang extension and I would like to be able to select a different compiler backend for my application. It appears that this is not exposed in the Golang API. Following the trail back to the C API I found that it is also not exposed there. I am interested in…

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Carefully Limit execution of WASM runtime

I am building an application in Golang that will run external WASM code in a smart contract environment. I need to be able to deterministically limit the execution of WASM code within my application. I do not see an obvious way to do this with the existing Golang library. Are…

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Trying to use wasmer from using Java JNI

I've compiled a Rust dynamic library that uses Wasmer and I'm trying to call into it from the JVM using JNI. After the 2nd call, the JVM exits with error code 134. With JNI logging enabled, Java also complains about signals being remapped. I think this is due to the way…

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Accessing browser API from wasi/wasm?

Is it possible to make a http request from my C/Go code that will work in the compiled module (wasi or wasm) executed in a browser or in a system via wamp?

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The latest version of emscripten isn't supported

I noticed that wasm moudles compiled by the latest version of emscipten do not work in wasmer. The runtime is missing some wasi functions:

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Share memory region between wasm instances

Is there any possibility to "map" the same physical memory area to several wasm instances? My idea is to make "communication" between wasm instances through this shared memory.

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