Daniel Carvalho has submitted this change. ( https://gem5-review.googlesource.com/c/public/gem5/+/38175 )

Change subject: sim: Add a listener checker to probes
......................................................................

sim: Add a listener checker to probes

Add a function to check if a probe has listeners. This can be
used to avoid performing costly tasks when no one is listening.

Change-Id: I8996a0ea298cb7cf97ac8aa9e627331a22bea26e
Signed-off-by: Daniel R. Carvalho <oda...@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/38175
Maintainer: Jason Lowe-Power <power...@gmail.com>
Tested-by: kokoro <noreply+kok...@google.com>
Reviewed-by: Jason Lowe-Power <power...@gmail.com>
Reviewed-by: Nikos Nikoleris <nikos.nikole...@arm.com>
---
M src/sim/probe/probe.hh
1 file changed, 9 insertions(+), 0 deletions(-)

Approvals:
  Jason Lowe-Power: Looks good to me, approved; Looks good to me, approved
  Nikos Nikoleris: Looks good to me, approved
  kokoro: Regressions pass



diff --git a/src/sim/probe/probe.hh b/src/sim/probe/probe.hh
index 57132fc..5becc26 100644
--- a/src/sim/probe/probe.hh
+++ b/src/sim/probe/probe.hh
@@ -262,6 +262,15 @@
     }

     /**
+     * Informs whether any listeners are attached to this probe. This can
+     * be used to avoid performing costly tasks needed by the probe when
+     * nobody is listening.
+     *
+     * @return Whether this probe has any listener.
+     */
+    bool hasListeners() const { return listeners.size() > 0; }
+
+    /**
      * @brief adds a ProbeListener to this ProbePoints notify list.
      * @param l the ProbeListener to add to the notify list.
      */

--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I8996a0ea298cb7cf97ac8aa9e627331a22bea26e
Gerrit-Change-Number: 38175
Gerrit-PatchSet: 5
Gerrit-Owner: Daniel Carvalho <oda...@yahoo.com.br>
Gerrit-Reviewer: Daniel Carvalho <oda...@yahoo.com.br>
Gerrit-Reviewer: Jason Lowe-Power <ja...@lowepower.com>
Gerrit-Reviewer: Jason Lowe-Power <power...@gmail.com>
Gerrit-Reviewer: Nikos Nikoleris <nikos.nikole...@arm.com>
Gerrit-Reviewer: kokoro <noreply+kok...@google.com>
Gerrit-MessageType: merged
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