chore: queue_usable api

.ci/docscov.sh

@@ -7,7 +7,7 @@ if [[ ! -f src/luv.c ]] ; then
 	exit 1
 fi
 
-func_definitions=$(sed -n '/luaL_Reg luv_functions\[\] = {$/,/^};$/{p;/^\};$/q}' src/luv.c)
+func_definitions=$(gsed -n '/luaL_Reg luv_functions\[\] = {$/,/^};$/{p;/^\};$/q}' src/luv.c)
 funcs_start_line_number=$(awk '/luaL_Reg luv_functions\[\] = \{/ {print FNR}' src/luv.c)
 after_funcs=$((funcs_start_line_number+1))
 method_definitions=$(tail -n +$after_funcs src/luv.c | sed -n '/luaL_Reg/,/^\};$/p')

.github/workflows/codeql.yml

@@ -13,10 +13,10 @@ name: "CodeQL"
 
 on:
   push:
-    branches: [ "master" ]
+    branches: [ "extend" ]
   pull_request:
     # The branches below must be a subset of the branches above
-    branches: [ "master" ]
+    branches: [ "extend" ]
     paths-ignore:
       - 'deps/'
   schedule:

docs.md

@@ -178,7 +178,7 @@ See Libuv's [Error constants](https://docs.libuv.org/en/v1.x/errors.html#error-c
 - `EMSGSIZE`: message too long.
 - `ENAMETOOLONG`: name too long.
 - `ENETDOWN`: network is down.
-- `ENETUNREACH`: network is unreachable.
+- `ENETUNREACH`: [network](2024-02-23_network.md) is unreachable.
 - `ENFILE`: file table overflow.
 - `ENOBUFS`: no buffer space available.
 - `ENODEV`: no such device.
@@ -3243,6 +3243,17 @@ called in the main loop thread.
 
 **Returns:** `boolean` or `fail`
 
+### `uv.queue_usable()`
+
+> method from `work_ctx:usable()`
+
+**Parameters:**
+- `work_ctx`: `luv_work_ctx_t userdata`
+
+Check weather queue usable.
+
+**Returns:** `boolean`
+
 ## DNS utility functions
 
 [DNS utility functions]: #dns-utility-functions

src/work.c

@@ -256,8 +256,10 @@ static int luv_queue_work(lua_State* L) {
 }
 
 static int luv_queue_usable(lua_State* L) {
+  uv_mutex_lock(&vm_mutex);
   lua_pushboolean(L, running >=0 && running + 1 < nvms);
   lua_pushinteger(L, running);
+  uv_mutex_unlock(&vm_mutex);
   return 2;
 };