Increase Wasm Worker stack size to 4KB in all used examples except #26823. (#26835)

Increase Wasm Worker stack size to 4KB in all used examples except
`audioworklet_worker.c`. It is not feasible to run Wasm Workers with
tiny 1KB stack sizes, that is not enough to call `emscripten_outf()`
from a Wasm Worker. Mass-convert all examples that use tiny 1KB Wasm
Worker stack sizes to have a 4KB stacks.

Improve RUNTIME_DEBUG print to actually print what exception was thrown.

Author: juj

site/source/docs/api_reference/wasm_workers.rst

@@ -23,7 +23,7 @@ Quick Example
 
   int main()
   {
-    emscripten_wasm_worker_t worker = emscripten_malloc_wasm_worker(/*stackSize: */1024);
+    emscripten_wasm_worker_t worker = emscripten_malloc_wasm_worker(/*stackSize: */4096);
     emscripten_wasm_worker_post_function_v(worker, run_in_worker);
   }
 

src/lib/libcore.js

@@ -2031,7 +2031,7 @@ addToLibrary({
     }
 #endif
 #if RUNTIME_DEBUG
-    dbg("handleException: got unexpected exception, calling quit_")
+    dbg(`handleException: got unexpected exception ${e}, calling quit_`)
 #endif
     quit_(1, e);
   },

test/atomic/test_wait32_notify.c

@@ -88,7 +88,7 @@ int main() {
   emscripten_out("main: creating worker");
 
 #ifdef __EMSCRIPTEN_WASM_WORKERS__
-  static char stack[1024];
+  static char stack[4096];
   emscripten_wasm_worker_t worker = emscripten_create_wasm_worker(stack, sizeof(stack));
   emscripten_wasm_worker_post_function_v(worker, worker_main);
 #else

test/atomic/test_wait64_notify.c

@@ -45,7 +45,7 @@ void run_test() {
 // This test run in both wasm workers and pthreads mode
 #ifdef __EMSCRIPTEN_WASM_WORKERS__
 
-char stack[1024];
+char stack[4096];
 
 void worker_main() {
   run_test();

test/atomic/test_wait_async.c

@@ -84,7 +84,7 @@ int main() {
   emscripten_out("main: creating worker");
 
 #ifdef __EMSCRIPTEN_WASM_WORKERS__
-  emscripten_wasm_worker_t worker = emscripten_malloc_wasm_worker(1024);
+  emscripten_wasm_worker_t worker = emscripten_malloc_wasm_worker(4096);
   emscripten_wasm_worker_post_function_v(worker, worker_main);
 #else
   pthread_create(&t, NULL, thread_main, NULL);

test/core/test_stdio_locking.c

@@ -52,8 +52,8 @@ int main() {
   printf("in main\n");
 #ifdef __EMSCRIPTEN_WASM_WORKERS__
   emscripten_wasm_worker_t worker[2];
-  worker[0] = emscripten_malloc_wasm_worker(/*stack size: */ 1024);
-  worker[1] = emscripten_malloc_wasm_worker(/*stack size: */ 1024);
+  worker[0] = emscripten_malloc_wasm_worker(/*stack size: */ 4096);
+  worker[1] = emscripten_malloc_wasm_worker(/*stack size: */ 4096);
   emscripten_wasm_worker_post_function_v(worker[0], thread_func);
   emscripten_wasm_worker_post_function_v(worker[1], thread_func);
 

test/embind/test_embind_wasm_workers.cpp

@@ -24,7 +24,7 @@ void run_in_worker() {
 }
 
 int main() {
-  emscripten_wasm_worker_t worker = emscripten_malloc_wasm_worker(/*stackSize: */1024);
+  emscripten_wasm_worker_t worker = emscripten_malloc_wasm_worker(/*stackSize: */4096);
   emscripten_wasm_worker_post_function_v(worker, run_in_worker);
   emscripten_exit_with_live_runtime();
 }

test/wasm_worker/c11__Thread_local.c

@@ -23,7 +23,7 @@ void worker_main() {
   emscripten_wasm_worker_post_function_v(0, main_thread_func);
 }
 
-char stack[1024];
+char stack[4096];
 
 int main() {
   emscripten_outf("%d", tls);

test/wasm_worker/condvar_waitinf.c

@@ -90,10 +90,10 @@ int main() {
   pthread_join(signaler, NULL);
   emscripten_out("done");
 #else
-  emscripten_wasm_worker_t waiter = emscripten_malloc_wasm_worker(1024);
+  emscripten_wasm_worker_t waiter = emscripten_malloc_wasm_worker(4096);
   emscripten_wasm_worker_post_function_v(waiter, waiter_main);
 
-  emscripten_wasm_worker_t signaler = emscripten_malloc_wasm_worker(1024);
+  emscripten_wasm_worker_t signaler = emscripten_malloc_wasm_worker(4096);
   emscripten_wasm_worker_post_function_v(signaler, signaler_main);
 #endif
 }

test/wasm_worker/cpp11_thread_local.cpp

@@ -21,7 +21,7 @@ void worker_main() {
   emscripten_wasm_worker_post_function_v(0, main_thread_func);
 }
 
-char stack[1024];
+char stack[4096];
 
 int main() {
   emscripten_outf("%d", tls);