Reduced memory consumption on network level.

src/base/net/tools/NetBuffer.cpp

@@ -0,0 +1,83 @@
+/* XMRig
+ * Copyright 2018-2020 SChernykh   <https://github.com/SChernykh>
+ * Copyright 2016-2020 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "base/net/tools/MemPool.h"
+#include "base/net/tools/NetBuffer.h"
+
+
+#include <cassert>
+#include <uv.h>
+
+
+namespace xmrig {
+
+
+static constexpr size_t kInitSize                       = 4;
+static MemPool<NetBuffer::kChunkSize, kInitSize> *pool  = nullptr;
+
+
+inline MemPool<NetBuffer::kChunkSize, kInitSize> *getPool()
+{
+    if (!pool) {
+        pool = new MemPool<NetBuffer::kChunkSize, kInitSize>();
+    }
+
+    return pool;
+}
+
+
+} // namespace xmrig
+
+
+char *xmrig::NetBuffer::allocate()
+{
+    return getPool()->allocate();
+}
+
+
+void xmrig::NetBuffer::destroy()
+{
+    if (!pool) {
+        return;
+    }
+
+    assert(pool->freeSize() == pool->size());
+
+    delete pool;
+    pool = nullptr;
+}
+
+
+void xmrig::NetBuffer::onAlloc(uv_handle_t *, size_t, uv_buf_t *buf)
+{
+    buf->base = getPool()->allocate();
+    buf->len  = kChunkSize;
+}
+
+
+void xmrig::NetBuffer::release(const char *buf)
+{
+    getPool()->deallocate(buf);
+}
+
+
+void xmrig::NetBuffer::release(const uv_buf_t *buf)
+{
+    getPool()->deallocate(buf->base);
+}