Embedded Network patches - eventfd & socket getters (#19632)

(cherry picked from commit eae29e8eaf)

lib/pure/ioselects/ioselectors_poll.nim

@@ -14,6 +14,12 @@ import posix, times
 # Maximum number of events that can be returned
 const MAX_POLL_EVENTS = 64
 
+const hasEventFds = defined(zephyr) or defined(nimPollHasEventFds)
+
+when hasEventFds:
+  proc eventfd(count: cuint, flags: cint): cint
+     {.cdecl, importc: "eventfd", header: "<sys/eventfd.h>".}
+
 when hasThreadSupport:
   type
     SelectorImpl[T] = object
@@ -184,14 +190,22 @@ proc unregister*[T](s: Selector[T], ev: SelectEvent) =
   s.pollRemove(fdi.cint)
 
 proc newSelectEvent*(): SelectEvent =
-  var fds: array[2, cint]
-  if posix.pipe(fds) != 0:
-    raiseIOSelectorsError(osLastError())
-  setNonBlocking(fds[0])
-  setNonBlocking(fds[1])
-  result = cast[SelectEvent](allocShared0(sizeof(SelectEventImpl)))
-  result.rfd = fds[0]
-  result.wfd = fds[1]
+  when not hasEventFds: 
+    var fds: array[2, cint]
+    if posix.pipe(fds) != 0:
+      raiseIOSelectorsError(osLastError())
+    setNonBlocking(fds[0])
+    setNonBlocking(fds[1])
+    result = cast[SelectEvent](allocShared0(sizeof(SelectEventImpl)))
+    result.rfd = fds[0]
+    result.wfd = fds[1]
+  else: 
+    let fdci = eventfd(0, posix.O_NONBLOCK)
+    if fdci == -1:
+      raiseIOSelectorsError(osLastError())
+    result = cast[SelectEvent](allocShared0(sizeof(SelectEventImpl)))
+    result.rfd = fdci
+    result.wfd = fdci
 
 proc trigger*(ev: SelectEvent) =
   var data: uint64 = 1
@@ -200,7 +214,10 @@ proc trigger*(ev: SelectEvent) =
 
 proc close*(ev: SelectEvent) =
   let res1 = posix.close(ev.rfd)
-  let res2 = posix.close(ev.wfd)
+  let res2 = 
+    when  hasEventFds: 0
+    else: posix.close(ev.wfd)
+
   deallocShared(cast[pointer](ev))
   if res1 != 0 or res2 != 0:
     raiseIOSelectorsError(osLastError())

lib/pure/net.nim

@@ -1758,6 +1758,16 @@ proc isSsl*(socket: Socket): bool =
 proc getFd*(socket: Socket): SocketHandle = return socket.fd
   ## Returns the socket's file descriptor
 
+when defined(zephyr) or defined(nimNetSocketExtras): # Remove in future
+  proc getDomain*(socket: Socket): Domain = return socket.domain
+    ## Returns the socket's domain
+
+  proc getType*(socket: Socket): SockType = return socket.sockType
+    ## Returns the socket's type
+
+  proc getProtocol*(socket: Socket): Protocol = return socket.protocol
+    ## Returns the socket's protocol
+
 when defined(nimHasStyleChecks):
   {.push styleChecks: off.}