Merge branch 'devel' of github.com:nim-lang/Nim into devel

doc/manual/types.txt

@@ -570,8 +570,7 @@ order. The *names* of the fields also have to be identical.
 
 The assignment operator for tuples copies each component.
 The default assignment operator for objects copies each component. Overloading
-of the assignment operator for objects is not possible, but this will change
-in future versions of the compiler.
+of the assignment operator is described in `type-bound-operations-operator`_. 
 
 .. code-block:: nim
 

doc/tut1.rst

@@ -185,9 +185,8 @@ to a storage location:
   var x = "abc" # introduces a new variable `x` and assigns a value to it
   x = "xyz"     # assigns a new value to `x`
 
-``=`` is the *assignment operator*. The assignment operator cannot be
-overloaded, overwritten or forbidden, but this might change in a future version
-of Nim. You can declare multiple variables with a single assignment
+``=`` is the *assignment operator*. The assignment operator can be
+overloaded. You can declare multiple variables with a single assignment 
 statement and all the variables will have the same value:
 
 .. code-block::

lib/genode_cpp/threads.h

@@ -31,8 +31,12 @@ struct Nim::SysThread
 		void entry() override {
 			(_func)(_arg); }
 
-		Thread(Genode::Env &env, Genode::size_t stack_size, Entry func, void *arg)
-		: Genode::Thread(env, "nim-thread", stack_size), _func(func), _arg(arg)
+		Thread(Genode::Env &env, Genode::size_t stack_size, Entry func, void *arg, int affinity)
+		: Genode::Thread(env, "nim-thread", stack_size,
+		                 env.cpu().affinity_space().location_of_index(affinity),
+		                 Genode::Cpu_session::Weight(Genode::Cpu_session::Weight::DEFAULT_WEIGHT-1),
+		                 env.cpu()),
+		  _func(func), _arg(arg)
 		{
 			Genode::Thread::start();
 		}
@@ -40,8 +44,8 @@ struct Nim::SysThread
 
 	Genode::Constructible<Thread> _thread;
 
-	void initThread(Genode::Env *env, Genode::size_t stack_size, Entry func, void *arg) {
-		_thread.construct(*env, stack_size, func, arg); }
+	void initThread(Genode::Env *env, Genode::size_t stack_size, Entry func, void *arg, int aff) {
+		_thread.construct(*env, stack_size, func, arg, aff); }
 
 	void joinThread() {
 		_thread->join(); }

lib/system.nim

@@ -1435,7 +1435,8 @@ when defined(nimdoc):
 
 elif defined(genode):
   proc quit*(errorcode: int = QuitSuccess) {.magic: "Exit", noreturn,
-    importcpp: "genodeEnv->parent().exit(@)", header: "<base/env.h>".}
+    importcpp: "genodeEnv->parent().exit(@); Genode::sleep_forever()",
+    header: "<base/sleep.h>".}
 
 else:
   proc quit*(errorcode: int = QuitSuccess) {.

lib/system/threads.nim

@@ -127,7 +127,8 @@ elif defined(genode):
   proc initThread(s: var SysThread,
                   stackSize: culonglong,
                   entry: GenodeThreadProc,
-                  arg: pointer) {.
+                  arg: pointer,
+                  affinity: cuint) {.
     importcpp: "#.initThread(genodeEnv, @)".}
 
   proc threadVarAlloc(): ThreadVarSlot = 0
@@ -567,6 +568,9 @@ when hostOS == "windows":
     setThreadAffinityMask(t.sys, uint(1 shl cpu))
 
 elif defined(genode):
+  var affinityOffset: cuint = 1
+  # CPU affinity offset for next thread, safe to roll-over
+
   proc createThread*[TArg](t: var Thread[TArg],
                            tp: proc (arg: TArg) {.thread, nimcall.},
                            param: TArg) =
@@ -577,7 +581,8 @@ elif defined(genode):
     when hasSharedHeap: t.stackSize = ThreadStackSize
     t.sys.initThread(
       ThreadStackSize.culonglong,
-      threadProcWrapper[TArg], addr(t))
+      threadProcWrapper[TArg], addr(t), affinityOffset)
+    inc affinityOffset
 
   proc pinToCpu*[Arg](t: var Thread[Arg]; cpu: Natural) =
     {.hint: "cannot change Genode thread CPU affinity after initialization".}