Add Async Implementation Reference Module

WORKSPACE.bazel

@@ -60,9 +60,9 @@ hedron_compile_commands_setup()
 
 http_archive(
     name = "com_grail_bazel_toolchain",
-    sha256 = "7fa5a8624b1148c36e09c7fa29ef6ee8b83f865219c9c219c9125aac78924758",
-    strip_prefix = "bazel-toolchain-c3131a6894804ee586d059c57ffe8e88d44172e1",
-    url = "https://github.com/grailbio/bazel-toolchain/archive/c3131a6894804ee586d059c57ffe8e88d44172e1.zip",
+    sha256 = "3cf5ac4bb7dae3776da586fe85685274f5d89cbb59436f50f572928354e72198",
+    strip_prefix = "bazel-toolchain-70a0fb556662fe3cadb07da32c91e232eb0d883d",
+    url = "https://github.com/grailbio/bazel-toolchain/archive/70a0fb556662fe3cadb07da32c91e232eb0d883d.zip",
 )
 
 load("@com_grail_bazel_toolchain//toolchain:deps.bzl", "bazel_toolchain_dependencies")
@@ -74,7 +74,8 @@ load("@com_grail_bazel_toolchain//toolchain:rules.bzl", "llvm_toolchain")
 llvm_toolchain(
     name = "llvm_toolchain",
     cxx_standard = {"linux": "c++20"},
-    llvm_version = "14.0.0",
+    distribution = "clang+llvm-15.0.6-x86_64-linux-gnu-ubuntu-18.04.tar.xz",
+    llvm_version = "15.0.6",
 )
 
 load("@llvm_toolchain//:toolchains.bzl", "llvm_register_toolchains")

bazel/copts.bzl

@@ -1,4 +1,4 @@
 copts = select({
     "@bazel_tools//tools/cpp:msvc": ["/std:c++20", "/Zc:preprocessor", "/permissive-"],
-    "//conditions:default": ["-std=c++20"],
+    "//conditions:default": ["-std=c++20", "-fexperimental-library"],
 })

ecsact/runtime/async.h

@@ -53,51 +53,107 @@ typedef enum {
 	 */
 	ECSACT_ASYNC_ERR_PERMISSION_DENIED,
 
+	/**
+	 * Client sent invalid connection options
+	 */
+	ECSACT_ASYNC_INVALID_CONNECTION_STRING,
+
 	/**
 	 * Connection to the client is closed
 	 */
 	ECSACT_ASYNC_ERR_CONNECTION_CLOSED,
 
 	/**
-	 * ExecutionOptions failed to merge
+	 * ExecutionOptions failed to merge, and upon failure the connection is closed
 	 */
 	ECSACT_ASYNC_ERR_EXECUTION_MERGE_FAILURE,
 } ecsact_async_error;
 
 /**
- * When an error occurs due to an async request this callback is invoked, only
- * either @p async_err or @p execute_err will have a non-ok value.
+ * When an error occurs due to an async request this callback is invoked.
  *
  * @param async_err when there is no async error this will be @ref
  * ECSACT_ASYNC_OK otherwise @see ecsact_async_error
- * @param execute_err when there is no system execution error, this will be @ref
- * ECSACT_EXEC_SYS_OK other @see ecsact_execute_systems_error
- * @param request_id the request ID returned by an async request function that
+
+ * @param request_ids A list of request IDs returned by an async request
+ function that
  * was responsible for this error
  * @param callback_user_data the @ref
  * ecsact_async_events_collector::error_callback_user_data
  */
 typedef void (*ecsact_async_error_callback)(
 	//
-	ecsact_async_error           async_err,
+	ecsact_async_error       async_err,
+	int                      request_ids_length,
+	ecsact_async_request_id* request_ids,
+	void*                    callback_user_data
+);
+
+/**
+ * When an occurs from the system execution this callback is invoked.
+ *
+ * @param execute_err when there is no system execution error, this will be
+ * @ref ECSACT_EXEC_SYS_OK other @see ecsact_execute_systems_error
+ */
+typedef void (*ecsact_execute_sys_error_callback)(
+	//
 	ecsact_execute_systems_error execute_err,
-	ecsact_async_request_id      request_id,
 	void*                        callback_user_data
 );
 
+/**
+ * When an entity is sucessfully created this callback is
+ * invoked.
+ *
+ * @param entity_id the entity id of the created entity
+ * @param request_id the request ID returned by the create entity callback
+ * @param callback_user_data the @ref
+ * ecsact_async_events_collector::error_callback_user_data
+ */
+typedef void (*ecsact_async_create_entity_callback)(
+	//
+	ecsact_entity_id        entity_id,
+	ecsact_async_request_id request_id,
+	void*                   callback_user_data
+);
+
 typedef struct ecsact_async_events_collector {
 	/**
 	 * invoked when an async request failed.
 	 * @see ecsact_async_error_callback
 	 * @see ecsact_async_error
+	 */
+	ecsact_async_error_callback async_error_callback;
+
+	/**
+	 * `callback_user_data` passed to `async_error_callback`
+	 */
+	void* async_error_callback_user_data;
+
+	/**
+	 * Invoked when a create entity request succeeds.
+	 * @see ecsact_async_create_entity_callback
+	 * @see ecsact_entity_id
+	 * @see ecsact_async_error
+	 */
+	ecsact_async_create_entity_callback async_entity_callback;
+
+	/**
+	 * `callback_user_data` passed to `async_entity_callback`
+	 */
+	void* async_entity_callback_user_data;
+
+	/**
+	 * invoked when a system execution error occurred.
+	 * @see ecsact_execute_sys_error_callback
 	 * @see ecsact_execute_systems_error
 	 */
-	ecsact_async_error_callback error_callback;
+	ecsact_execute_sys_error_callback system_error_callback;
 
 	/**
 	 * `callback_user_data` passed to `error_callback`
 	 */
-	void* error_callback_user_data;
+	void* system_error_callback_user_data;
 } ecsact_async_events_collector;
 
 /**
@@ -116,34 +172,10 @@ ECSACT_ASYNC_API_FN(
 	const ecsact_execution_options options
 );
 
-/**
- * Enqueues system execution options at the specified ticks. If multiple
- * invocations of `ecsact_async_enqueue_execution_options_at` happen for the
- * same tick(s) the execution options will be _merged_.
- *
- * @param list_length the length of @p tick_list and @p options_list
- * @param tick_list a sequential list of ticks the execution options in @p
- * options_list will be used during system exeuction. Length is determined by @p
- * list_length
- * @param options_list a sequential list of execution options. Length is
- * determined by @p list_length
- * @returns a request ID representing this async request. Later used in @ref
- * ecsact_async_error_callback if an error occurs
- */
-
-ECSACT_ASYNC_API_FN(
-	ecsact_async_request_id,
-	ecsact_async_enqueue_execution_options_at
-)
-( //
-	int                             list_length,
-	const int*                      tick_list,
-	const ecsact_execution_options* options_list
-);
-
 /**
  * Invokes the various callbacks in `execution_events` and `async_events` that
- * have been pending.
+ * have been pending. If either a system or async error occurs it's treated
+ * as a call to ecscact_async_disconnect
  */
 ECSACT_ASYNC_API_FN(void, ecsact_async_flush_events)
 ( //
@@ -171,12 +203,17 @@ ECSACT_ASYNC_API_FN(ecsact_async_request_id, ecsact_async_connect)
  */
 ECSACT_ASYNC_API_FN(void, ecsact_async_disconnect)(void);
 
-#define FOR_EACH_ECSACT_ASYNC_API_FN(fn, ...)                 \
-	fn(ecsact_async_enqueue_execution_options, __VA_ARGS__);    \
-	fn(ecsact_async_enqueue_execution_options_at, __VA_ARGS__); \
-	fn(ecsact_async_flush_events, __VA_ARGS__);                 \
-	fn(ecsact_async_connect, __VA_ARGS__);                      \
-	fn(ecsact_async_disconnect, __VA_ARGS__);
+/**
+ * Returns an entity
+ */
+ECSACT_ASYNC_API_FN(ecsact_async_request_id, ecsact_async_create_entity)(void);
+
+#define FOR_EACH_ECSACT_ASYNC_API_FN(fn, ...)              \
+	fn(ecsact_async_enqueue_execution_options, __VA_ARGS__); \
+	fn(ecsact_async_flush_events, __VA_ARGS__);              \
+	fn(ecsact_async_connect, __VA_ARGS__);                   \
+	fn(ecsact_async_disconnect, __VA_ARGS__);                \
+	fn(ecsact_async_create_entity, __VA_ARGS__);
 
 #undef ECSACT_ASYNC_API
 #undef ECSACT_ASYNC_API_FN

ecsact/runtime/serialize.hh

@@ -46,6 +46,38 @@ std::vector<std::byte> serialize(const T& component_or_action) {
 	return bytes;
 }
 
+/**
+ * Serializes an ecsact_component when the type is unknown.
+ * @returns serialized action bytes
+ */
+inline std::vector<std::byte> serialize(const ecsact_component& component) {
+	std::vector<std::byte> out_component;
+	out_component.resize(ecsact_serialize_component_size(component.component_id));
+
+	ecsact_serialize_component(
+		component.component_id,
+		component.component_data,
+		reinterpret_cast<uint8_t*>(out_component.data())
+	);
+	return out_component;
+}
+
+/**
+ * Serializes an ecsact_action when the type is unknown.
+ * @returns serialized component bytes
+ */
+inline std::vector<std::byte> serialize(const ecsact_action& action) {
+	std::vector<std::byte> out_action;
+	out_action.resize(ecsact_serialize_action_size(action.action_id));
+
+	ecsact_serialize_action(
+		action.action_id,
+		action.action_data,
+		reinterpret_cast<uint8_t*>(out_action.data())
+	);
+	return out_action;
+}
+
 /**
  * Calls `ecsact_deserialize_action` or `ecsact_deserialize_component` based on
  * the type of @tp T.
@@ -115,4 +147,43 @@ int deserialize(
 		::ecsact::deserialize<T>(serialized_component_or_action, read_amount);
 	return read_amount;
 }
+
+/**
+ * Deserializes an ecsact_component when the type is unknown.
+ * @returns an ecsact_action
+ */
+inline std::vector<std::byte> deserialize(
+	const ecsact_action_id& id,
+	std::vector<std::byte>& serialized_action
+) {
+	std::vector<std::byte> action_data;
+	action_data.resize(serialized_action.size());
+
+	ecsact_deserialize_action(
+		id,
+		reinterpret_cast<uint8_t*>(serialized_action.data()),
+		action_data.data()
+	);
+	return action_data;
+}
+
+/**
+ * Deserializes an ecsact_component when the type is unknown.
+ * @returns an ecsact_component_id
+ */
+inline std::vector<std::byte> deserialize(
+	const ecsact_component_id& id,
+	std::vector<std::byte>&    serialized_component
+) {
+	std::vector<std::byte> component_data;
+	component_data.resize(serialized_component.size());
+
+	ecsact_deserialize_component(
+		id,
+		reinterpret_cast<uint8_t*>(serialized_component.data()),
+		component_data.data()
+	);
+	return component_data;
+}
+
 } // namespace ecsact

reference/async_reference/BUILD.bazel

@@ -0,0 +1,41 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+load("//bazel:copts.bzl", "copts")
+
+package(default_visibility = ["//visiblity:public"])
+
+exports_files([
+    "async_reference.hh",
+    "async_reference.cc",
+    "async.cc",
+])
+
+cc_library(
+    name = "async_reference",
+    srcs = ["async_reference.cc"],
+    hdrs = ["async_reference.hh"],
+    copts = copts,
+    visibility = ["//visibility:public"],
+    deps = [
+        "//:async",
+        "//:core",
+        "//reference/async_reference/callbacks:async_callbacks",
+        "//reference/async_reference/callbacks:execution_callbacks",
+        "//reference/async_reference/detail/c_execution_options",
+        "//reference/async_reference/entity_manager",
+        "//reference/async_reference/tick_manager",
+        "//reference/async_reference/util",
+        "//reference/async_reference/util:types",
+    ],
+)
+
+cc_library(
+    name = "async",
+    srcs = ["async.cc"],
+    copts = copts,
+    defines = ["ECSACT_ASYNC_API_EXPORT="],
+    visibility = ["//visibility:public"],
+    deps = [
+        ":async_reference",
+        "//:async",
+    ],
+)

reference/async_reference/async.cc

@@ -0,0 +1,35 @@
+#include <optional>
+
+#include "ecsact/runtime/async.h"
+#include "async_reference.hh"
+
+namespace async {
+std::optional<async_reference> reference;
+}
+
+ecsact_async_request_id ecsact_async_connect(const char* connection_string) {
+	async::reference.emplace();
+	return async::reference->connect(connection_string);
+}
+
+void ecsact_async_disconnect() {
+	async::reference->disconnect();
+	async::reference.reset();
+}
+
+void ecsact_async_flush_events(
+	const ecsact_execution_events_collector* execution_events,
+	const ecsact_async_events_collector*     async_events
+) {
+	async::reference->flush_events(execution_events, async_events);
+}
+
+ecsact_async_request_id ecsact_async_create_entity() {
+	return async::reference->create_entity_request();
+}
+
+ecsact_async_request_id ecsact_async_enqueue_execution_options(
+	const ecsact_execution_options options
+) {
+	return async::reference->enqueue_execution_options(options);
+}