From 6590c2817428493828bb674323dd31b95dcdf922 Mon Sep 17 00:00:00 2001
From: alexpeshkoff <alexpeshkoff@users.sourceforge.net>
Date: Fri, 9 Oct 2015 11:45:08 +0000
Subject: [PATCH] Added memory pool describing constant MAX_MEDUIM_BLOCK_SIZE

---
 src/common/classes/alloc.h             |  3 +++
 src/common/classes/misc/class_test.cpp | 12 ++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/src/common/classes/alloc.h b/src/common/classes/alloc.h
index 9276f5a9fa..4d7aaa0b1f 100644
--- a/src/common/classes/alloc.h
+++ b/src/common/classes/alloc.h
@@ -165,6 +165,9 @@ private:
 	static MemoryStats* default_stats_group;
 
 public:
+	// This is maximum block size which is cached (not allocated directly from OS)
+	enum RecommendedBufferSize { MAX_MEDUIM_BLOCK_SIZE = 64384 };	// MediumLimits::TOP_LIMIT - 128
+
 	static MemoryPool* defaultMemoryManager;
 
 public:
diff --git a/src/common/classes/misc/class_test.cpp b/src/common/classes/misc/class_test.cpp
index 14359f5658..89a6bb0f56 100644
--- a/src/common/classes/misc/class_test.cpp
+++ b/src/common/classes/misc/class_test.cpp
@@ -579,6 +579,12 @@ void testAllocator()
 	VERIFY_POOL(pool);
 	VERIFY_POOL(parent);
 
+	printf("Allocate max recommended medium buffer (%d bytes): ", MemoryPool::MAX_MEDUIM_BLOCK_SIZE);
+	void* maxMedium = pool->allocate(MemoryPool::MAX_MEDUIM_BLOCK_SIZE);
+	printf(" DONE\n");
+	VERIFY_POOL(pool);
+	VERIFY_POOL(parent);
+
 	printf("Deallocate the rest of small items in quasi-random order: ");
 	while (items.getNext()) {
 		pool->deallocate(items.current().item);
@@ -593,6 +599,12 @@ void testAllocator()
 	} while (bigItems.getNext());
 	printf(" DONE\n");
 
+	printf("Deallocate max recommended medium buffer: ");
+	pool->deallocate(maxMedium);
+	printf(" DONE\n");
+	VERIFY_POOL(pool);
+	VERIFY_POOL(parent);
+
 	printf("Deallocate %d large items: ", LARGE_ITEMS/2);
 	for (i = 0; i<LARGE_ITEMS/2; i++)
 		pool->deallocate(la[i]);