ipc2: started working on event-based ipc handling.

aqhome/events2/fdobject.c

@@ -13,6 +13,11 @@
 #include "./fdobject_p.h"
 
 #include <gwenhywfar/inherit.h>
+#include <gwenhywfar/debug.h>
+
+#include <sys/socket.h>
+#include <errno.h>
+#include <string.h>
 
 
 
@@ -109,14 +114,59 @@ int AQH_FdObject_GetFd(const AQH_OBJECT *o)
 
 
 
+int AQH_FdObject_Read(AQH_OBJECT *o, uint8_t *ptrBuffer, uint32_t lenBuffer)
+{
+  if (o && ptrBuffer && lenBuffer) {
+    AQH_FDOBJECT *xo;
+
+    xo=GWEN_INHERIT_GETDATA(AQH_OBJECT, AQH_FDOBJECT, o);
+    if (xo) {
+      if (xo->fd!=-1) {
+        ssize_t rv;
+
+        rv=recv(xo->fd, ptrBuffer, lenBuffer, MSG_DONTWAIT);
+        if (rv==0) {
+          DBG_INFO(AQH_LOGDOMAIN, "EOF met");
+          return 0;
+        }
+        else if (rv>0) {
+          /* data received */
+          return (int) rv;
+        }
+        else {
+          if (rv==EINTR || errno==EWOULDBLOCK || errno==EAGAIN) {
+            /* temporarily no data, try again */
+            return GWEN_ERROR_TRY_AGAIN;
+          }
+          else {
+            DBG_ERROR(AQH_LOGDOMAIN, "Error on read: %s (%d)", strerror(errno), errno);
+            xo->fd=-1;
+            return GWEN_ERROR_IO;
+          }
+        }
+      }
+      else {
+        DBG_ERROR(AQH_LOGDOMAIN, "Previous error, not reading.");
+        return GWEN_ERROR_IO;
+      }
+    }
+  }
+
+  return GWEN_ERROR_INVALID;
+}
+
+
+
 void _cbEnable(AQH_OBJECT *o)
 {
-  if (o) {
+  if (o && !(AQH_Object_GetFlags(o) & AQH_OBJECT_FLAGS_ENABLED)) {
     AQH_EVENT_LOOP *eventLoop;
 
     eventLoop=AQH_Object_GetEventLoop(o);
-    if (eventLoop)
+    if (eventLoop) {
       AQH_EventLoop_AddFdObject(eventLoop, o);
+      AQH_Object_AddFlags(o, AQH_OBJECT_FLAGS_ENABLED);
+    }
   }
 }
 
@@ -124,12 +174,14 @@ void _cbEnable(AQH_OBJECT *o)
 
 void _cbDisable(AQH_OBJECT *o)
 {
-  if (o) {
+  if (o && (AQH_Object_GetFlags(o) & AQH_OBJECT_FLAGS_ENABLED)) {
     AQH_EVENT_LOOP *eventLoop;
 
     eventLoop=AQH_Object_GetEventLoop(o);
-    if (eventLoop)
+    if (eventLoop) {
       AQH_EventLoop_DelFdObject(eventLoop, o);
+      AQH_Object_SubFlags(o, AQH_OBJECT_FLAGS_ENABLED);
+    }
   }
 }