From e5f3b7f9780111f9e5329ebcaabe96e3ac705c71 Mon Sep 17 00:00:00 2001
From: Georgios Pinitas <georgios.pinitas@arm.com>
Date: Tue, 13 Mar 2018 18:21:53 +0000
Subject: COMPMID-1002: Expose number of pools in PoolManager

Change-Id: I3b14bd87d0650dc4378dc3ccbd14274b9c019657
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/124428
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
---
 arm_compute/runtime/IPoolManager.h | 7 ++++++-
 arm_compute/runtime/PoolManager.h  | 5 +++--
 src/runtime/PoolManager.cpp        | 9 ++++++++-
 3 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/arm_compute/runtime/IPoolManager.h b/arm_compute/runtime/IPoolManager.h
index 03cccdd605..4cc3c07b5f 100644
--- a/arm_compute/runtime/IPoolManager.h
+++ b/arm_compute/runtime/IPoolManager.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 ARM Limited.
+ * Copyright (c) 2017-2018 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -53,6 +53,11 @@ public:
      * @param[in] pool Pool to be managed
      */
     virtual void register_pool(std::unique_ptr<IMemoryPool> pool) = 0;
+    /** Returns the total number of pools managed by the pool manager
+     *
+     * @return Number of managed pools
+     */
+    virtual size_t num_pools() const = 0;
 };
 } // arm_compute
 #endif /*__ARM_COMPUTE_IPOOLMANAGER_H__ */
diff --git a/arm_compute/runtime/PoolManager.h b/arm_compute/runtime/PoolManager.h
index 6549350e8f..509080532a 100644
--- a/arm_compute/runtime/PoolManager.h
+++ b/arm_compute/runtime/PoolManager.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 ARM Limited.
+ * Copyright (c) 2017-2018 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -56,12 +56,13 @@ public:
     IMemoryPool *lock_pool() override;
     void unlock_pool(IMemoryPool *pool) override;
     void register_pool(std::unique_ptr<IMemoryPool> pool) override;
+    size_t num_pools() const override;
 
 private:
     std::list<std::unique_ptr<IMemoryPool>> _free_pools;     /**< List of free pools */
     std::list<std::unique_ptr<IMemoryPool>> _occupied_pools; /**< List of occupied pools */
     std::unique_ptr<arm_compute::Semaphore> _sem;            /**< Semaphore to control the queues */
-    arm_compute::Mutex                      _mtx;            /**< Mutex to control access to the queues */
+    mutable arm_compute::Mutex              _mtx;            /**< Mutex to control access to the queues */
 };
 } // arm_compute
 #endif /*__ARM_COMPUTE_POOLMANAGER_H__ */
diff --git a/src/runtime/PoolManager.cpp b/src/runtime/PoolManager.cpp
index 42cc943e56..293241d6f4 100644
--- a/src/runtime/PoolManager.cpp
+++ b/src/runtime/PoolManager.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 ARM Limited.
+ * Copyright (c) 2017-2018 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -72,3 +72,10 @@ void PoolManager::register_pool(std::unique_ptr<IMemoryPool> pool)
     // Update semaphore
     _sem = arm_compute::support::cpp14::make_unique<arm_compute::Semaphore>(_free_pools.size());
 }
+
+size_t PoolManager::num_pools() const
+{
+    std::lock_guard<arm_compute::Mutex> lock(_mtx);
+
+    return _free_pools.size() + _occupied_pools.size();
+}
\ No newline at end of file
-- 
cgit v1.2.1