*Tobias. Sorry I had the wrong name in mind when writing this :D Am Dienstag, 5. Mai 2020 14:04:42 UTC+2 schrieb Immanuel Haffner: > > Hi Thomas, > > I started a related discussion in v8-dev > https://groups.google.com/forum/#!topic/v8-dev/jQMLH3EkCoM > With the help of Clemens I managed to map host memory into a WebAssembly > module instance, so both host and VM work on the same memory. If this would > help you, I can attach the respective patch and the glue code for the wasm > module instance. > > Regards, > Immanuel > > Am Montag, 4. Mai 2020 10:43:33 UTC+2 schrieb Tobias: >> >> Hi, >> >> I work on an application that processes different data streams and >> creates new ones. I want to try out whether V8 satisfies our needs with >> this, and now I'm searching for an efficient way to do this. The data is >> organized in records of different typed values, so a JS ArrayBuffer + some >> DataViews on it would be an option to extract the data from a record of the >> stream (and put it back for the output). But how do I get the data into V8 >> most efficiently? The processing itself will be scheduled from the outside >> by calling the different JS methods depending on some event scheduling. The >> options that I'm currently considering are: >> >> >> 1. create ArrayBuffers for each stream and memcpy on each new record >> the data into the buffer when required. That would require 1 memcpy / >> stream-record (read or written - doesn't matter) >> 2. create an ArrayBuffer for each record and re-set the global >> variable for it. That would eliminate the copying since I can point it to >> the location where the data is located, but it would require V8 handle >> manipulation all the time. >> 3. create an accessor to the C++ record-streams that returns an array >> buffer. Here my main problem is that I don't know how I can return an >> array-buffer that points to already existing memory and return it so that >> it's more efficent than number 2. >> >> Can someone give me some hints/pointers where I can look that up or give >> me some sample code? Any help would be appreciated. >> >> Regards >> Tobias >> >
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