Re-org thread env init/destroy for HW bound check (#631)

And fix cmake_minimum_required() deprecation warning since envoy is using cmake 3.16 or higher version.

core/iwasm/aot/aot_runtime.c

@@ -1254,21 +1254,26 @@ bool
 aot_signal_init()
 {
 #ifndef BH_PLATFORM_WINDOWS
-    return os_signal_init(aot_signal_handler) == 0 ? true : false;
+    return os_thread_signal_init(aot_signal_handler) == 0 ? true : false;
 #else
-    return AddVectoredExceptionHandler(1, aot_exception_handler)
-           ? true : false;
+    if (os_thread_signal_init() != 0)
+        return false;
+
+    if (!AddVectoredExceptionHandler(1, aot_exception_handler)) {
+        os_thread_signal_destroy();
+        return false;
+    }
 #endif
+    return true;
 }
 
 void
 aot_signal_destroy()
 {
-#ifndef BH_PLATFORM_WINDOWS
-    os_signal_destroy();
-#else
+#ifdef BH_PLATFORM_WINDOWS
     RemoveVectoredExceptionHandler(aot_exception_handler);
 #endif
+    os_thread_signal_destroy();
 }
 
 static bool
@@ -1302,7 +1307,10 @@ invoke_native_with_hw_bound_check(WASMExecEnv *exec_env, void *func_ptr,
         return false;
     }
 
-    os_thread_init_stack_guard_pages();
+    if (!os_thread_signal_inited()) {
+        aot_set_exception(module_inst, "thread signal env not inited");
+        return false;
+    }
 
     wasm_exec_env_push_jmpbuf(exec_env, &jmpbuf_node);
 
@@ -1486,11 +1494,11 @@ aot_create_exec_env_and_call_function(AOTModuleInstance *module_inst,
     WASMExecEnv *exec_env = NULL, *existing_exec_env = NULL;
     bool ret;
 
-#if WASM_ENABLE_THREAD_MGR != 0
+#if defined(OS_ENABLE_HW_BOUND_CHECK)
+    existing_exec_env = exec_env = aot_exec_env;
+#elif WASM_ENABLE_THREAD_MGR != 0
     existing_exec_env = exec_env = wasm_clusters_search_exec_env(
             (WASMModuleInstanceCommon*)module_inst);
-#elif defined(OS_ENABLE_HW_BOUND_CHECK)
-    existing_exec_env = exec_env = aot_exec_env;
 #endif
 
     if (!existing_exec_env) {

core/iwasm/common/wasm_c_api.c

@@ -363,7 +363,13 @@ wasm_store_new(wasm_engine_t *engine)
         return NULL;
     }
 
+    if (!wasm_runtime_init_thread_env()) {
+        LOG_ERROR("init thread environment failed");
+        return NULL;
+    }
+
     if (!(store = malloc_internal(sizeof(wasm_store_t)))) {
+        wasm_runtime_destroy_thread_env();
         return NULL;
     }
 
@@ -412,6 +418,8 @@ wasm_store_delete(wasm_store_t *store)
     DEINIT_VEC(store->modules, wasm_module_vec_delete);
     DEINIT_VEC(store->instances, wasm_instance_vec_delete);
     wasm_runtime_free(store);
+
+    wasm_runtime_destroy_thread_env();
 }
 
 /* Type Representations */
@@ -1376,7 +1384,7 @@ module_to_module_ext(wasm_module_t *module)
 wasm_module_t *
 wasm_module_new(wasm_store_t *store, const wasm_byte_vec_t *binary)
 {
-    char error[128] = { 0 };
+    char error_buf[128] = { 0 };
     wasm_module_ex_t *module_ex = NULL;
 
     bh_assert(singleton_engine);
@@ -1393,11 +1401,12 @@ wasm_module_new(wasm_store_t *store, const wasm_byte_vec_t *binary)
 
     INIT_VEC(module_ex->binary, wasm_byte_vec_new, binary->size, binary->data);
 
-    module_ex->module_comm_rt = wasm_runtime_load(
-      (uint8 *)module_ex->binary->data, (uint32)module_ex->binary->size, error,
-      (uint32)sizeof(error));
+    module_ex->module_comm_rt =
+        wasm_runtime_load((uint8 *)module_ex->binary->data,
+                          (uint32)module_ex->binary->size,
+                          error_buf, (uint32)sizeof(error_buf));
     if (!(module_ex->module_comm_rt)) {
-        LOG_ERROR(error);
+        LOG_ERROR(error_buf);
         goto failed;
     }
 
@@ -1418,6 +1427,7 @@ static void
 wasm_module_delete_internal(wasm_module_t *module)
 {
     wasm_module_ex_t *module_ex;
+
     if (!module) {
         return;
     }
@@ -1436,7 +1446,7 @@ wasm_module_delete_internal(wasm_module_t *module)
 void
 wasm_module_delete(wasm_module_t *module)
 {
-    /* will release module when releasing the store */
+    /* the module will be released when releasing the store */
 }
 
 void
@@ -3589,7 +3599,7 @@ wasm_instance_new(wasm_store_t *store,
                   const wasm_extern_t *const imports[],
                   own wasm_trap_t **traps)
 {
-    char error[128] = { 0 };
+    char error_buf[128] = { 0 };
     const uint32 stack_size = 16 * 1024;
     const uint32 heap_size = 16 * 1024;
     uint32 import_count = 0;
@@ -3650,10 +3660,11 @@ wasm_instance_new(wasm_store_t *store,
 #endif
     }
 
-    instance->inst_comm_rt = wasm_runtime_instantiate(
-      *module, stack_size, heap_size, error, sizeof(error));
+    instance->inst_comm_rt =
+        wasm_runtime_instantiate(*module, stack_size, heap_size,
+                                 error_buf, sizeof(error_buf));
     if (!instance->inst_comm_rt) {
-        LOG_ERROR(error);
+        LOG_ERROR(error_buf);
         goto failed;
     }
 

core/iwasm/common/wasm_runtime_common.c

@@ -819,6 +819,27 @@ wasm_runtime_destroy_exec_env(WASMExecEnv *exec_env)
     wasm_exec_env_destroy(exec_env);
 }
 
+bool
+wasm_runtime_init_thread_env()
+{
+#if WASM_ENABLE_AOT != 0
+#ifdef OS_ENABLE_HW_BOUND_CHECK
+    return aot_signal_init();
+#endif
+#endif
+    return true;
+}
+
+void
+wasm_runtime_destroy_thread_env()
+{
+#if WASM_ENABLE_AOT != 0
+#ifdef OS_ENABLE_HW_BOUND_CHECK
+    return aot_signal_destroy();
+#endif
+#endif
+}
+
 #if (WASM_ENABLE_MEMORY_PROFILING != 0) || (WASM_ENABLE_MEMORY_TRACING != 0)
 void
 wasm_runtime_dump_module_mem_consumption(const WASMModuleCommon *module)

core/iwasm/include/wasm_export.h

@@ -392,6 +392,27 @@ wasm_runtime_create_exec_env(wasm_module_inst_t module_inst,
 WASM_RUNTIME_API_EXTERN void
 wasm_runtime_destroy_exec_env(wasm_exec_env_t exec_env);
 
+/**
+ * Initialize thread environment.
+ * Note:
+ *   If developer creates a child thread by himself to call the
+ *   the wasm function in that thread, he should call this API
+ *   firstly before calling the wasm function and then call
+ *   wasm_runtime_destroy_thread_env() after calling the wasm
+ *   function. If the thread is created from the runtime API,
+ *   it is unnecessary to call these two APIs.
+ *
+ * @return true if success, false otherwise
+ */
+WASM_RUNTIME_API_EXTERN bool
+wasm_runtime_init_thread_env();
+
+/**
+ * Destroy thread environment
+ */
+WASM_RUNTIME_API_EXTERN void
+wasm_runtime_destroy_thread_env();
+
 /**
  * Get WASM module instance from execution environment
  *