Spread module custom data to all threads, enable libc-builtin float print (#633)

core/iwasm/libraries/lib-pthread/lib_pthread_wrapper.c

@@ -535,13 +535,13 @@ pthread_create_wrapper(wasm_exec_env_t exec_env,
                        void *arg)           /* arguments buffer */
 {
     wasm_module_t module = get_module(exec_env);
+    wasm_module_inst_t module_inst = get_module_inst(exec_env);
     wasm_module_inst_t new_module_inst = NULL;
     ThreadInfoNode *info_node = NULL;
     ThreadRoutineArgs *routine_args = NULL;
     uint32 thread_handle;
     int32 ret = -1;
 #if WASM_ENABLE_LIBC_WASI != 0
-    wasm_module_inst_t module_inst = get_module_inst(exec_env);
     WASIContext *wasi_ctx = get_wasi_ctx(module_inst);
 #endif
 
@@ -552,6 +552,13 @@ pthread_create_wrapper(wasm_exec_env_t exec_env,
                                               NULL, 0)))
         return -1;
 
+    if (module_inst) {
+        /* Set custom_data to new module instance */
+        wasm_runtime_set_custom_data_internal(
+            new_module_inst,
+            wasm_runtime_get_custom_data(module_inst));
+    }
+
 #if WASM_ENABLE_LIBC_WASI != 0
     if (wasi_ctx)
         wasm_runtime_set_wasi_ctx(new_module_inst, wasi_ctx);

core/iwasm/libraries/libc-builtin/libc_builtin_wrapper.c

@@ -361,6 +361,19 @@ handle_1_to_9:
                 break;
             }
 
+            case 'f': {
+                float64 f64;
+                char buf[16], *s;
+
+                CHECK_VA_ARG(ap, float64);
+                f64 = _va_arg(ap, float64);
+                snprintf(buf, sizeof(buf), "%f", f64);
+                s = buf;
+                while (*s)
+                    out((int) (*s++), ctx);
+                break;
+            }
+
             default:
                 out((int) '%', ctx);
                 out((int) *fmt, ctx);

core/iwasm/libraries/thread-mgr/thread_manager.c

@@ -328,6 +328,7 @@ WASMExecEnv *
 wasm_cluster_spawn_exec_env(WASMExecEnv *exec_env)
 {
     WASMCluster *cluster = wasm_exec_env_get_cluster(exec_env);
+    wasm_module_inst_t module_inst = get_module_inst(exec_env);
     wasm_module_t module = wasm_exec_env_get_module(exec_env);
     wasm_module_inst_t new_module_inst;
     WASMExecEnv *new_exec_env;
@@ -343,6 +344,13 @@ wasm_cluster_spawn_exec_env(WASMExecEnv *exec_env)
         return NULL;
     }
 
+    if (module_inst) {
+        /* Set custom_data to new module instance */
+        wasm_runtime_set_custom_data_internal(
+            new_module_inst,
+            wasm_runtime_get_custom_data(module_inst));
+    }
+
     new_exec_env = wasm_exec_env_create_internal(
                         new_module_inst, exec_env->wasm_stack_size);
     if (!new_exec_env)
@@ -654,3 +662,24 @@ wasm_cluster_spread_exception(WASMExecEnv *exec_env)
 
     traverse_list(&cluster->exec_env_list, set_exception_visitor, exec_env);
 }
+
+static void
+set_custom_data_visitor(void *node, void *user_data)
+{
+    WASMExecEnv *curr_exec_env = (WASMExecEnv *)node;
+    WASMModuleInstanceCommon *module_inst = get_module_inst(curr_exec_env);
+
+    wasm_runtime_set_custom_data_internal(module_inst, user_data);
+}
+
+void
+wasm_cluster_spread_custom_data(WASMModuleInstanceCommon *module_inst,
+                                void *custom_data)
+{
+    WASMExecEnv *exec_env = wasm_clusters_search_exec_env(module_inst);
+    WASMCluster *cluster = wasm_exec_env_get_cluster(exec_env);
+
+    traverse_list(&cluster->exec_env_list,
+                  set_custom_data_visitor,
+                  custom_data);
+}

core/iwasm/libraries/thread-mgr/thread_manager.h

@@ -118,6 +118,10 @@ wasm_cluster_spawn_exec_env(WASMExecEnv *exec_env);
 void
 wasm_cluster_destroy_spawned_exec_env(WASMExecEnv *exec_env);
 
+void
+wasm_cluster_spread_custom_data(WASMModuleInstanceCommon *module_inst,
+                                void *custom_data);
+
 #ifdef __cplusplus
 }
 #endif