1 files changed, 111 insertions, 0 deletions
diff --git a/src/runtime/MEMUtils.cpp b/src/runtime/MEMUtils.cpp
new file mode 100644
index 0000000000..ad00070935
--- /dev/null
+++ b/src/runtime/MEMUtils.cpp
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "arm_compute/core/CPP/CPPTypes.h"
+#include "arm_compute/core/Error.h"
+#include "support/ToolchainSupport.h"
+
+#ifndef BARE_METAL
+#include <fstream>
+#include <regex>
+#include <sstream>
+#endif // ifndef BARE_METAL
+
+namespace
+{
+void parse_mem_info(size_t &total, size_t &free, size_t &buffer)
+{
+    free   = 0;
+    total  = 0;
+    buffer = 0;
+#ifndef BARE_METAL
+    size_t        memcache = 0;
+    size_t        memfree  = 0;
+    std::ifstream meminfo_f;
+    meminfo_f.open("/proc/meminfo", std::ios::in);
+    if(meminfo_f.is_open())
+    {
+        std::stringstream str_stream;
+        str_stream << meminfo_f.rdbuf();
+        const std::string str = str_stream.str();
+        try
+        {
+            std::smatch match;
+            if(std::regex_search(str, match, std::regex("MemTotal: (.*)kB")) && match.size() > 1)
+            {
+                const std::string result = match.str(1);
+                total                    = std::stoul(result, nullptr, 0);
+            }
+            if(std::regex_search(str, match, std::regex("MemFree: (.*)kB")) && match.size() > 1)
+            {
+                const std::string result = match.str(1);
+                memfree                  = std::stoul(result, nullptr, 0);
+            }
+            if(std::regex_search(str, match, std::regex("Buffers: (.*)kB")) && match.size() > 1)
+            {
+                const std::string result = match.str(1);
+                buffer                   = std::stoul(result, nullptr, 0);
+            }
+            if(std::regex_search(str, match, std::regex("Cached: (.*)kB")) && match.size() > 1)
+            {
+                const std::string result = match.str(1);
+                memcache                 = std::stoul(result, nullptr, 0);
+            }
+            free = memfree + (buffer + memcache);
+        }
+        catch(std::regex_error &e)
+        {
+            // failed parsing /proc/meminfo
+            // return 0s on all fields
+        }
+    }
+#endif // ifndef BARE_METAL
+}
+
+} // namespace
+
+namespace arm_compute
+{
+void MEMInfo::set_policy(MemoryPolicy policy)
+{
+    _policy = policy;
+}
+
+MemoryPolicy MEMInfo::get_policy()
+{
+    return _policy;
+}
+MemoryPolicy MEMInfo::_policy = { MemoryPolicy::NORMAL };
+
+MEMInfo::MEMInfo()
+    : _total(0), _free(0), _buffer(0)
+{
+    parse_mem_info(_total, _free, _buffer);
+}
+
+size_t MEMInfo::get_total_in_kb() const
+{
+    return _total;
+}
+
+} // namespace arm_compute