Ok, that’s interesting. The synchronous download worked on the background thread. This works now with -s NO_EXIT_RUNTIME=1. It had no effect on the asynchronous download on a background thread. I still get a call to downloadFailed with a status of 0.
> On Aug 9, 2017, at 1:06 PM, Jukka Jylänki <juj...@gmail.com> wrote: > > Hmm, can you try specifying the following attributes for the download? > > attr.attributes = EMSCRIPTEN_FETCH_LOAD_TO_MEMORY | > EMSCRIPTEN_FETCH_SYNCHRONOUS | EMSCRIPTEN_FETCH_REPLACE; > > Also there is a linker flag -s FETCH_DEBUG=1 that can show more information. > > 2017-08-09 22:45 GMT+03:00 Scott Watson <wswat...@gmail.com>: >> First, thank you for the assistance! >> >> -s NO_EXIT_RUNTIME=1 had no effect. Actually, I think you get that >> automatically with -s USE_PTHREADS=1 don't you? >> >> I switched to using pthreads directly with no effect either. >> >> >> On Wednesday, August 9, 2017 at 12:35:20 PM UTC-7, jj wrote: >>> >>> First thing is to remember to also compile with -s NO_EXIT_RUNTIME=1, >>> since once main() exits, it will tear down the application runtime, >>> along with all threads, so the linker flag will keep it running after >>> exiting main. I wonder if that already will solve the issue? >>> >>> Another note is that C++11 threading is known to have some bugs, the >>> pthread_create() API is robust and unit tested. (If someone knows of a >>> good open source unit test suite for C++11 threading, I'm all ears) >>> >>> 2017-08-09 21:37 GMT+03:00 Scott Watson <wswa...@gmail.com>: >>>> I am having trouble porting our application to asm.js. We have a class >>>> that >>>> handles HTTP GETs for us, that I am trying to port using the >>>> emscripten_fetch api. >>>> >>>> I can only get the asynchronous fetch to work, and only when called on >>>> the >>>> main thread. I can't get synchronous to work at all. Using the sample >>>> code >>>> from: >>>> https://kripken.github.io/emscripten-site/docs/api_reference/fetch.html, >>>> I >>>> built this. >>>> >>>> // main.cpp >>>> >>>> #include <thread> >>>> #include <iostream> >>>> >>>> #include <emscripten/fetch.h> >>>> >>>> void downloadSucceeded(emscripten_fetch_t *fetch) { >>>> printf("Finished asynchronously downloading %llu bytes from URL >>>> %s.\n", fetch->numBytes, fetch->url); >>>> // The data is now available at fetch->data[0] through >>>> fetch->data[fetch->numBytes-1]; >>>> emscripten_fetch_close(fetch); // Free data associated with the >>>> fetch. >>>> } >>>> >>>> void downloadFailed(emscripten_fetch_t *fetch) { >>>> printf("Downloading %s asynchronously failed, HTTP failure status >>>> code: %d.\n", fetch->url, fetch->status); >>>> //emscripten_fetch_close(fetch); // Also free data on failure. >>>> } >>>> >>>> void worker() >>>> { >>>> emscripten_fetch_attr_t attr; >>>> >>>> emscripten_fetch_attr_init(&attr); >>>> >>>> strcpy(attr.requestMethod, "GET"); >>>> >>>> attr.attributes = EMSCRIPTEN_FETCH_LOAD_TO_MEMORY; >>>> attr.onsuccess = downloadSucceeded; >>>> attr.onerror = downloadFailed; >>>> >>>> emscripten_fetch(&attr, "http://localhost/VOD/nangu/00000041.ts";); >>>> // >>>> Blocks here until the operation is complete. >>>> } >>>> >>>> int main() >>>> { >>>> // worker(); >>>> std::thread test1(worker); >>>> } >>>> >>>> I am building it using: >>>> >>>> emcc main.cpp -o $(OUTPUT_FOLDER)/thread_test.html -s USE_PTHREADS=1 >>>> -s >>>> PTHREAD_POOL_SIZE=5 -s FETCH=1 >>>> >>>> My downloadFailed method is being called with a 'fetch->status' of 0. >>>> If I >>>> call the 'worker()' method directly I get the expected behavior. >>>> >>>> I am tearing my hair out here. I have googled everything I can think of >>>> to >>>> no avail. >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups >>>> "emscripten-discuss" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an >>>> email to emscripten-discuss+unsubscr...@googlegroups.com. >>>> For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "emscripten-discuss" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to emscripten-discuss+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to a topic in the Google > Groups "emscripten-discuss" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/emscripten-discuss/wBCcSKPZsx8/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > emscripten-discuss+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to emscripten-discuss+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
