Export emscripten_notify_memory_growth(). (proxy-wasm#288)

Signed-off-by: chaoqin-li1123 <[email protected]>

Author: chaoqin-li1123

include/proxy-wasm/exports.h

@@ -177,6 +177,7 @@ void wasi_unstable_proc_exit(Word);
 Word wasi_unstable_clock_time_get(Word, uint64_t, Word);
 Word wasi_unstable_random_get(Word, Word);
 Word pthread_equal(Word left, Word right);
+void emscripten_notify_memory_growth(Word);
 
 // Support for embedders, not exported to Wasm.
 

src/exports.cc

@@ -908,6 +908,8 @@ void wasi_unstable_proc_exit(Word /*exit_code*/) {
 
 Word pthread_equal(Word left, Word right) { return static_cast<uint64_t>(left == right); }
 
+void emscripten_notify_memory_growth(Word /*memory_index*/) {}
+
 Word set_tick_period_milliseconds(Word period_milliseconds) {
   TimerToken token = 0;
   return contextOrEffectiveContext()->setTimerPeriod(std::chrono::milliseconds(period_milliseconds),

src/wasm.cc

@@ -89,6 +89,7 @@ void WasmBase::registerCallbacks() {
       &ConvertFunctionWordToUint32<decltype(exports::_fn),                                         \
                                    exports::_fn>::convertFunctionWordToUint32)
   _REGISTER(pthread_equal);
+  _REGISTER(emscripten_notify_memory_growth);
 #undef _REGISTER
 
   // Register the capability with the VM if it has been allowed, otherwise register a stub.