From: Brian Watling <bwatling@fb.com>
Date: Fri, 31 Jul 2015 15:52:36 +0000 (-0700)
Subject: Add accessor to estimate a FiberManager's run queue size
X-Git-Tag: v0.53.0~22
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=207ab87609103bb70af444d2d6a4f5d8582811c9;p=folly.git

Add accessor to estimate a FiberManager's run queue size

Summary: Add accessor to estimate a FiberManager's run queue size

Reviewed By: @sarangbh

Differential Revision: D2293367
---

diff --git a/folly/experimental/fibers/FiberManager.h b/folly/experimental/fibers/FiberManager.h
index 9c2ae756..6f19b87e 100644
--- a/folly/experimental/fibers/FiberManager.h
+++ b/folly/experimental/fibers/FiberManager.h
@@ -252,6 +252,14 @@ class FiberManager : public ::folly::Executor {
    */
   void setObserver(ExecutionObserver* observer);
 
+  /**
+   * Returns an estimate of the number of fibers which are waiting to run (does
+   * not include fibers or tasks scheduled remotely).
+   */
+  size_t runQueueSize() const {
+    return readyFibers_.size() + yieldedFibers_.size();
+  }
+
   static FiberManager& getFiberManager();
   static FiberManager* getFiberManagerUnsafe();