try to fix dotnet#96545

src/mono/browser/runtime/invoke-js.ts

@@ -6,7 +6,7 @@ import BuildConfiguration from "consts:configuration";
 
 import { marshal_exception_to_cs, bind_arg_marshal_to_cs } from "./marshal-to-cs";
 import { get_signature_argument_count, bound_js_function_symbol, get_sig, get_signature_version, get_signature_type, imported_js_function_symbol, get_signature_handle, get_signature_function_name, get_signature_module_name } from "./marshal";
-import { setI32_unchecked, receiveWorkerHeapViews } from "./memory";
+import { setI32_unchecked, receiveWorkerHeapViews, forceThreadMemoryViewRefresh } from "./memory";
 import { stringToMonoStringRoot } from "./strings";
 import { MonoObject, MonoObjectRef, JSFunctionSignature, JSMarshalerArguments, WasmRoot, BoundMarshalerToJs, JSFnHandle, BoundMarshalerToCs, JSHandle, MarshalerType } from "./types/internal";
 import { Int32Ptr } from "./types/emscripten";
@@ -52,6 +52,9 @@ export function mono_wasm_invoke_import_async(args: JSMarshalerArguments, signat
     let max_postpone_count = 10;
     function postpone_invoke_import_async() {
         if (max_postpone_count < 0 || is_thread_available()) {
+            if (WasmEnableThreads) {
+                forceThreadMemoryViewRefresh();
+            }
             bound_fn(args);
             Module._free(args as any);
         } else {

src/mono/browser/runtime/pthreads/shared/emscripten-replacements.ts

@@ -5,11 +5,11 @@ import WasmEnableThreads from "consts:wasmEnableThreads";
 import BuildConfiguration from "consts:configuration";
 
 import { dumpThreads, onWorkerLoadInitiated, resolveThreadPromises } from "../browser";
-import { mono_wasm_pthread_on_pthread_created } from "../worker";
+import { mono_wasm_pthread_on_pthread_created, onRunMessage } from "../worker";
 import { PThreadLibrary, PThreadWorker, getModulePThread, getUnusedWorkerPool } from "./emscripten-internals";
-import { loaderHelpers, mono_assert } from "../../globals";
+import { Module, loaderHelpers, mono_assert } from "../../globals";
 import { mono_log_warn } from "../../logging";
-import { PThreadPtrNull } from "./types";
+import { PThreadPtr, PThreadPtrNull } from "./types";
 
 /** @module emscripten-replacements Replacements for individual functions in the emscripten PThreads library.
  * These have a hard dependency on the version of Emscripten that we are using and may need to be kept in sync with
@@ -22,6 +22,13 @@ export function replaceEmscriptenPThreadLibrary(modulePThread: PThreadLibrary):
     const originalLoadWasmModuleToWorker = modulePThread.loadWasmModuleToWorker;
     const originalThreadInitTLS = modulePThread.threadInitTLS;
     const originalReturnWorkerToPool = modulePThread.returnWorkerToPool;
+    const original_emscripten_thread_init = (Module as any)["__emscripten_thread_init"];
+
+
+    (Module as any)["__emscripten_thread_init"] = (pthread_ptr: PThreadPtr, isMainBrowserThread: number, isMainRuntimeThread: number, canBlock: number) => {
+        onRunMessage(pthread_ptr);
+        original_emscripten_thread_init(pthread_ptr, isMainBrowserThread, isMainRuntimeThread, canBlock);
+    };
 
     modulePThread.loadWasmModuleToWorker = (worker: PThreadWorker): Promise<PThreadWorker> => {
         const afterLoaded = originalLoadWasmModuleToWorker(worker);

src/mono/browser/runtime/pthreads/worker/index.ts

@@ -20,6 +20,7 @@ import { postRunWorker, preRunWorker } from "../../startup";
 import { mono_log_debug, mono_log_error } from "../../logging";
 import { CharPtr } from "../../types/emscripten";
 import { utf8ToString } from "../../strings";
+import { forceThreadMemoryViewRefresh } from "../../memory";
 
 // re-export some of the events types
 export {
@@ -85,13 +86,19 @@ function monoDedicatedChannelMessageFromMainToWorker(event: MessageEvent<string>
     mono_log_debug("got message from main on the dedicated channel", event.data);
 }
 
+export function onRunMessage(pthread_ptr: PThreadPtr) {
+    monoThreadInfo.pthreadId = pthread_ptr;
+    forceThreadMemoryViewRefresh();
+}
 
 /// Called by emscripten when a pthread is setup to run on a worker.  Can be called multiple times
 /// for the same webworker, since emscripten can reuse workers.
 /// This is an implementation detail, that shouldn't be used directly.
 export function mono_wasm_pthread_on_pthread_created(): void {
     if (!WasmEnableThreads) return;
     try {
+        forceThreadMemoryViewRefresh();
+
         const pthread_id = mono_wasm_pthread_ptr();
         mono_assert(!is_nullish(pthread_id), "pthread_self() returned null");
         monoThreadInfo.pthreadId = pthread_id;

src/mono/browser/runtime/scheduling.ts

@@ -6,6 +6,7 @@ import WasmEnableThreads from "consts:wasmEnableThreads";
 import cwraps from "./cwraps";
 import { ENVIRONMENT_IS_WORKER, Module, loaderHelpers } from "./globals";
 import { is_thread_available } from "./pthreads/shared/emscripten-replacements";
+import { forceThreadMemoryViewRefresh } from "./memory";
 
 let spread_timers_maximum = 0;
 let pump_count = 0;
@@ -43,6 +44,9 @@ function mono_background_exec_until_done() {
     if (!loaderHelpers.is_runtime_running()) {
         return;
     }
+    if (WasmEnableThreads) {
+        forceThreadMemoryViewRefresh();
+    }
     while (pump_count > 0) {
         --pump_count;
         cwraps.mono_background_exec();
@@ -85,6 +89,9 @@ export function mono_wasm_schedule_timer(shortestDueTimeMs: number): void {
 
 function mono_wasm_schedule_timer_tick() {
     Module.maybeExit();
+    if (WasmEnableThreads) {
+        forceThreadMemoryViewRefresh();
+    }
     if (!loaderHelpers.is_runtime_running()) {
         return;
     }