Remove stale code for hybrid heap and incremental GC

The hybrid heap emulator was last working in the non-SMP R11B
run-time system. When the constant pools were introduced in R12B,
the hybrid heap emulator was not updated to handle them.

At this point, the harm from reduced readability of the code is
greater than any potential usefulness of keeping the code.

1 files changed, 0 insertions, 54 deletions

diff --git a/erts/emulator/beam/erl_message.c b/erts/emulator/beam/erl_message.c
index bd86e3ea9e..499a2aac53 100644
--- a/erts/emulator/beam/erl_message.c
+++ b/erts/emulator/beam/erl_message.c
@@ -29,7 +29,6 @@
 #include "global.h"
 #include "erl_message.h"
 #include "erl_process.h"
-#include "erl_nmgc.h"
 #include "erl_binary.h"
 #include "dtrace-wrapper.h"
 
@@ -303,8 +302,6 @@ notify_new_message(Process *receiver)
     ERTS_SMP_LC_ASSERT(ERTS_PROC_LOCK_STATUS
 		       & erts_proc_lc_my_proc_locks(receiver));
 
-    ACTIVATE(receiver);
-
     switch (receiver->status) {
     case P_GARBING:
 	switch (receiver->gcstatus) {
@@ -987,56 +984,6 @@ erts_send_message(Process* sender,
 #endif
 			   );
         BM_SWAP_TIMER(send,system);
-#ifdef HYBRID
-    } else {
-        ErlMessage* mp = message_alloc();
-        BM_SWAP_TIMER(send,copy);
-#ifdef INCREMENTAL
-        /* TODO: During GC activate processes if the message relies in
-         * the fromspace and the sender is active. During major
-         * collections add the message to the gray stack if it relies
-         * in the old generation and the sender is active and the
-         * receiver is inactive.
-
-        if (!IS_CONST(message) && (ma_gc_flags & GC_CYCLE) &&
-            (ptr_val(message) >= inc_fromspc &&
-            ptr_val(message) < inc_fromend) && INC_IS_ACTIVE(sender))
-            INC_ACTIVATE(receiver);
-        else if (!IS_CONST(message) && (ma_gc_flags & GC_CYCLE) &&
-            (ptr_val(message) >= global_old_heap &&
-            ptr_val(message) < global_old_hend) &&
-            INC_IS_ACTIVE(sender) && !INC_IS_ACTIVE(receiver))
-            Mark message in blackmap and add it to the gray stack
-        */
-
-         if (!IS_CONST(message))
-            INC_ACTIVATE(receiver);
-#endif
-        LAZY_COPY(sender,message);
-        BM_SWAP_TIMER(copy,send);
-        DTRACE6(message_send, sender_name, receiver_name,
-                size_object(message)msize, tok_label, tok_lastcnt, tok_serial);
-        ERL_MESSAGE_TERM(mp) = message;
-        ERL_MESSAGE_TOKEN(mp) = NIL;
-#ifdef USE_VM_PROBES
-	ERL_MESSAGE_DT_UTAG(mp) = NIL;
-#endif
-        mp->next = NULL;
-	LINK_MESSAGE(receiver, mp);
-        ACTIVATE(receiver);
-
-        if (receiver->status == P_WAITING) {
-            erts_add_to_runq(receiver);
-        } else if (receiver->status == P_SUSPENDED) {
-            receiver->rstatus = P_RUNABLE;
-        }
-        if (IS_TRACED_FL(receiver, F_TRACE_RECEIVE)) {
-            trace_receive(receiver, message);
-        }
-
-        BM_SWAP_TIMER(send,system);
-        return;
-#else
     } else if (sender == receiver) {
 	/* Drop message if receiver has a pending exit ... */
 #ifdef ERTS_SMP
@@ -1145,7 +1092,6 @@ erts_send_message(Process* sender,
         BM_SWAP_TIMER(send,system);
 #endif /* #ifndef ERTS_SMP */
 	return;
-#endif /* HYBRID */
     }
 }