systemc: Keep track of more cases when we should be ready after resume.

If a thread self suspends, it should be marked as ready after resuming.
If a process was already ready when suspended, it should also be
remarked as ready after resuming.

Special care has to be taken in pre-initialization situations so that
processes are put on the right lists, and whether a process is tracked
is already marked as ready.

Change-Id: I15da7d747db591785358d47781297468c5f9fd09
Reviewed-on: https://gem5-review.googlesource.com/c/12445
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/systemc/core/scheduler.hh b/src/systemc/core/scheduler.hh
index 2da8da470..f55ff1f83 100644
--- a/src/systemc/core/scheduler.hh
+++ b/src/systemc/core/scheduler.hh
@@ -182,6 +182,14 @@ class Scheduler
     // Put a process on the ready list.
     void ready(Process *p);
 
+    // Mark a process as ready if init is finished, or put it on the list of
+    // processes to be initialized.
+    void resume(Process *p);
+
+    // Remove a process from the ready/init list if it was on one of them, and
+    // return if it was.
+    bool suspend(Process *p);
+
     // Schedule an update for a given channel.
     void requestUpdate(Channel *c);