luamodules/luv: add libuv lua binding luv.

Initial work done by Michael Mogenson.

Signed-off-by: Xu Xingliang <xuxingliang@xiaomi.com>

interpreters/luamodules/luv/.gitignore

@@ -0,0 +1,2 @@
+luv/
+*.tar.gz

interpreters/luamodules/luv/0001-fix-compile-warnings.patch

@@ -0,0 +1,141 @@
+From 809314f3c818ddcfdc72e2b3adb4faf350bf201c Mon Sep 17 00:00:00 2001
+From: Xu Xingliang <xuxingliang@xiaomi.com>
+Date: Fri, 2 Dec 2022 13:07:17 +0800
+Subject: [PATCH] fix compile warnings
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+luv/src/fs.c:431:14: warning: declaration of ‘data’ shadows a previous local [-Wshadow]
+luv/src/private.h:114:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
+
+Signed-off-by: Xu Xingliang <xuxingliang@xiaomi.com>
+---
+ src/fs.c      | 14 +++++++-------
+ src/luv.h     |  2 +-
+ src/private.h |  2 +-
+ src/thread.c  |  2 +-
+ src/work.c    |  6 +++---
+ 5 files changed, 13 insertions(+), 13 deletions(-)
+
+diff --git a/src/fs.c b/src/fs.c
+index 344d602..ea2a80a 100644
+--- a/src/fs.c
++++ b/src/fs.c
+@@ -428,14 +428,14 @@ static void luv_fs_cb(uv_fs_t* req) {
+ // variable 'nargs' to the number of return values
+ #define FS_CALL_NORETURN(func, req, ...) {                \
+   int ret, sync;                                          \
+-  luv_req_t* data = (luv_req_t*)req->data;                \
+-  sync = data->callback_ref == LUA_NOREF;                 \
+-  ret = uv_fs_##func(data->ctx->loop, req, __VA_ARGS__,   \
++  luv_req_t* lreq = (luv_req_t*)req->data;                \
++  sync = lreq->callback_ref == LUA_NOREF;                 \
++  ret = uv_fs_##func(lreq->ctx->loop, req, __VA_ARGS__,   \
+                      sync ? NULL : luv_fs_cb);            \
+   if (req->fs_type != UV_FS_ACCESS && ret < 0) {          \
+     lua_pushnil(L);                                       \
+     if (fs_req_has_dest_path(req)) {                      \
+-      lua_rawgeti(L, LUA_REGISTRYINDEX, data->data_ref);  \
++      lua_rawgeti(L, LUA_REGISTRYINDEX, lreq->data_ref);  \
+       const char* dest_path = lua_tostring(L, -1);        \
+       lua_pop(L, 1);                                      \
+       lua_pushfstring(L, "%s: %s: %s -> %s",              \
+@@ -455,7 +455,7 @@ static void luv_fs_cb(uv_fs_t* req) {
+     }                                                     \
+     lua_pushstring(L, uv_err_name(req->result));          \
+     if(req->fs_type != UV_FS_SCANDIR) {                   \
+-      luv_cleanup_req(L, data);                           \
++      luv_cleanup_req(L, lreq);                           \
+       req->data = NULL;                                   \
+       uv_fs_req_cleanup(req);                             \
+     }                                                     \
+@@ -464,13 +464,13 @@ static void luv_fs_cb(uv_fs_t* req) {
+   else if (sync) {                                        \
+     nargs = push_fs_result(L, req);                       \
+     if(req->fs_type != UV_FS_SCANDIR) {                   \
+-      luv_cleanup_req(L, data);                           \
++      luv_cleanup_req(L, lreq);                           \
+       req->data = NULL;                                   \
+       uv_fs_req_cleanup(req);                             \
+     }                                                     \
+   }                                                       \
+   else {                                                  \
+-    lua_rawgeti(L, LUA_REGISTRYINDEX, data->req_ref);     \
++    lua_rawgeti(L, LUA_REGISTRYINDEX, lreq->req_ref);     \
+     nargs = 1;                                            \
+   }                                                       \
+ }
+diff --git a/src/luv.h b/src/luv.h
+index 5921e15..ad02329 100644
+--- a/src/luv.h
++++ b/src/luv.h
+@@ -147,7 +147,7 @@ LUALIB_API void luv_set_cthread(lua_State* L, luv_CFcpcall cpcall);
+ */
+ LUALIB_API int luaopen_luv (lua_State *L);
+ 
+-typedef lua_State* (*luv_acquire_vm)();
++typedef lua_State* (*luv_acquire_vm)(void);
+ typedef void (*luv_release_vm)(lua_State* L);
+ LUALIB_API void luv_set_thread_cb(luv_acquire_vm acquire, luv_release_vm release);
+ 
+diff --git a/src/private.h b/src/private.h
+index 1e921a4..b4ea7fb 100644
+--- a/src/private.h
++++ b/src/private.h
+@@ -111,7 +111,7 @@ static int luv_arg_type_error(lua_State* L, int index, const char* fmt);
+ static int luv_optboolean(lua_State*L, int idx, int defaultval);
+ 
+ /* From thread.c */
+-static lua_State* luv_thread_acquire_vm();
++static lua_State* luv_thread_acquire_vm(void);
+ 
+ /* From process.c */
+ static int luv_parse_signal(lua_State* L, int slot);
+diff --git a/src/thread.c b/src/thread.c
+index 36041af..5de5556 100644
+--- a/src/thread.c
++++ b/src/thread.c
+@@ -24,7 +24,7 @@ typedef struct {
+   luv_thread_arg_t args;
+ } luv_thread_t;
+ 
+-static lua_State* luv_thread_acquire_vm() {
++static lua_State* luv_thread_acquire_vm(void) {
+   lua_State* L = luaL_newstate();
+ 
+   // Add in the lua standard libraries
+diff --git a/src/work.c b/src/work.c
+index 7e42641..b51bfd1 100644
+--- a/src/work.c
++++ b/src/work.c
+@@ -127,7 +127,7 @@ static int luv_work_cb(lua_State* L) {
+   return LUA_OK;
+ }
+ 
+-static lua_State* luv_work_acquire_vm()
++static lua_State* luv_work_acquire_vm(void)
+ {
+   lua_State* L = uv_key_get(&tls_vmkey);
+   if (L == NULL)
+@@ -245,7 +245,7 @@ static const luaL_Reg luv_work_ctx_methods[] = {
+   {NULL, NULL}
+ };
+ 
+-static void luv_key_init_once()
++static void luv_key_init_once(void)
+ {
+   const char* val;
+   int status = uv_key_create(&tls_vmkey);
+@@ -287,7 +287,7 @@ static void luv_key_init_once()
+   idx_vms = 0;
+ }
+ 
+-static void luv_work_cleanup()
++static void luv_work_cleanup(void)
+ {
+   unsigned int i;
+ 
+-- 
+2.25.1
+

interpreters/luamodules/luv/Kconfig

@@ -0,0 +1,30 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config LUA_LUV_MODULE
+	bool "Lua Luv module"
+	default n
+	depends on INTERPRETERS_LUA && LIBUV
+	select LIBC_EXECFUNCS
+	select NET
+	select NETDEV_IFINDEX
+	select NET_SOCKOPTS
+	select NET_TCP
+	select NET_UDP
+	select PSEUDOFS_SOFTLINKS
+	select SCHED_ATEXIT
+	select SCHED_HAVE_PARENT
+	---help---
+		Bare libuv bindings for Lua
+
+if LUA_LUV_MODULE
+
+config LUA_LUV_VERSION
+	string "Luv version"
+	default "1.44.2-1"
+	---help---
+		Luv release version to fetch and build.
+
+endif # LUA_LUV_MODULE

interpreters/luamodules/luv/Make.defs

@@ -0,0 +1,24 @@
+############################################################################
+# apps/interpreters/luamodules/luv/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_LUA_LUV_MODULE),)
+CONFIGURED_APPS += $(APPDIR)/interpreters/luamodules/luv
+
+endif

interpreters/luamodules/luv/Makefile

@@ -0,0 +1,67 @@
+############################################################################
+# apps/interpreters/luamodules/luv/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+# Luv library
+
+LUV_VERSION  = $(patsubst "%",%,$(strip $(CONFIG_LUA_LUV_VERSION)))
+LUV_TARBALL  = luv-$(LUV_VERSION).tar.gz
+LUV_UNPACK   = luv
+LUV_URL_BASE = https://github.com/luvit/luv/releases/download/
+LUV_URL      = $(LUV_URL_BASE)/$(LUV_VERSION)/$(LUV_TARBALL)
+LUV_SRC      = $(LUV_UNPACK)$(DELIM)src
+
+VPATH += $(LUV_SRC)
+CSRCS = luv.c
+
+# Luv download and unpack
+
+$(LUV_TARBALL):
+	$(Q) echo "Downloading $(LUV_TARBALL)"
+	$(Q) curl -O -L $(LUV_URL)
+
+$(LUV_UNPACK): $(LUV_TARBALL)
+	$(Q) echo "Unpacking $(LUV_TARBALL) to $(LUV_UNPACK)"
+	$(Q) tar -xvzf $(LUV_TARBALL)
+	$(Q) mv luv-$(LUV_VERSION) $(LUV_UNPACK)
+	$(Q) patch -d $(LUV_UNPACK) -p1 < 0001-fix-compile-warnings.patch
+
+$(LUV_UNPACK)/.patch: $(LUV_UNPACK)
+	touch $(LUV_UNPACK)/.patch
+
+# Download and unpack tarball if no git repo found
+ifeq ($(wildcard $(LUV_UNPACK)/.git),)
+distclean::
+	$(call DELDIR, $(LUV_UNPACK))
+	$(call DELFILE, $(LUV_TARBALL))
+
+context:: $(LUV_UNPACK)/.patch
+endif
+
+# Set LUAMODNAME and include Module.mk to add this module to the list of
+# builtin modules for the Lua interpreter. LUAMODNAME should match the
+# module's luaopen function.
+
+LUAMODNAME = luv
+
+include $(APPDIR)/interpreters/lua/Module.mk
+
+include $(APPDIR)/Application.mk