I would like to have a function that makes an async call, and returns
control to the browser during the call, then resumes once the async call is
complete. However, I would like this to appear to the calling code to be a
synchronous call. So for instance, I could do something like this:
struct FileInfo
{
void* buffer;
unsigned size;
};
FileInfo loadUrl(const char* url)
{
FileInfo info;
emscripten_async_wget2_data(url, "GET", "", &info, false, onload,
onerror, onprogress);
emscripten_pause(); // Blocks until emscripten_resume() is called
return info;
}
void onerror(void* ptr, int code, const char* desc)
{
// Handle not found, etc.
}
void onprogress(void* ptr, int loaded, int total)
{
// Update progress bar
}
void onload(void* ptr, void* buffer, unsigned size)
{
static_cast<FileInfo*>(ptr)->buffer = buffer;
static_cast<FileInfo*>(ptr)->size = size;
emscripten_resume(); // Now loadUrl resumes and returns FileInfo.
}
Is there any way to do this?
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