From 46fbd76595faea874773a2ecbbdb36c3b56e697e Mon Sep 17 00:00:00 2001
From: Gabe Black <gabeblack@google.com>
Date: Sun, 12 Jan 2020 22:58:48 -0800
Subject: sim: Move findFreeContext to System.

This method searches through the ThreadContexts stored in the system,
and has no concrete connection to Process other than it happened to be
used by a Process in the clone system call.

By moving it, we can use its functionality in classes other than
Process.

Change-Id: Ic6899c335dc13841c6fe948ea3a4f8ad67e562bb
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/24285
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Brandon Potter <Brandon.Potter@amd.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>
---
 src/sim/system.cc | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/sim/system.cc')

diff --git a/src/sim/system.cc b/src/sim/system.cc
index 0cc328c22..739b42278 100644
--- a/src/sim/system.cc
+++ b/src/sim/system.cc
@@ -302,6 +302,16 @@ System::registerThreadContext(ThreadContext *tc, ContextID assigned)
     return id;
 }
 
+ThreadContext *
+System::findFreeContext()
+{
+    for (auto &it : threadContexts) {
+        if (ThreadContext::Halted == it->status())
+            return it;
+    }
+    return nullptr;
+}
+
 bool
 System::schedule(PCEvent *event)
 {
-- 
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