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Pause and Resume WebAssembly with Binaryen's Asyncify
Pausing and resuming code can be useful for various things, like implementing coroutines, async/await, limiting how much CPU time untrusted code gets, and so forth. If you are customizing a WebAssembly VM then you have various ways to instrument the compiled code to do this. On the other hand, if you want to do this in “userspace”, that is, if you are running inside of a standard WebAssembly VM an
mizchi 2019/07/24
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Emscripten and WebAssembly
Dec 9th 2015 an open source LLVM-based compiler from C and C++ to JavaScript C++ ⇒ LLVM ⇒ Emscripten ⇒ JS float array[5000]; // C++ int main() { for (int i = 0; i < 5000; ++i) { array[i] += 1.0f; } } ⇒ Emscripten ⇒ function main() { // JavaScript var a = 0, b = 0; do { a = (8 + (b << 2)) | 0; HEAPF32[a >> 2] = +HEAPF32[a >> 2] + 1.0; b = (b + 1) | 0; } while ((b | 0) < 5000); } This is asm.j
mizchi 2015/12/13
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