1 files changed, 98 insertions, 0 deletions
diff --git a/src/runtime/CL/Utils.cpp b/src/runtime/CL/Utils.cpp
new file mode 100644
index 0000000000..5e22dfd4eb
--- /dev/null
+++ b/src/runtime/CL/Utils.cpp
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2020 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/CL/CLKernelLibrary.h"
+#include "arm_compute/runtime/CL/CLScheduler.h"
+
+#include <fstream>
+#include <map>
+#include <string>
+
+namespace arm_compute
+{
+void restore_program_cache_from_file(const std::string &filename)
+{
+    std::ifstream cache_file(filename, std::ios::binary);
+    if(cache_file.is_open())
+    {
+        if(!CLScheduler::get().is_initialised())
+        {
+            arm_compute::CLScheduler::get().default_init();
+        }
+
+        while(!cache_file.eof())
+        {
+            size_t name_len   = 0;
+            size_t binary_len = 0;
+            cache_file.read(reinterpret_cast<char *>(&name_len), sizeof(size_t));
+            cache_file.read(reinterpret_cast<char *>(&binary_len), sizeof(size_t));
+            if(name_len == 0 || binary_len == 0)
+            {
+                break;
+            }
+            std::vector<char>          tmp(name_len);
+            std::vector<unsigned char> binary(binary_len);
+            std::string                name;
+            cache_file.read(tmp.data(), name_len);
+            name.assign(tmp.data(), name_len);
+            tmp.resize(binary_len);
+            cache_file.read(reinterpret_cast<char *>(binary.data()), binary_len);
+            cl::Context             context = arm_compute::CLScheduler::get().context();
+            cl::Program::Binaries   binaries{ binary };
+            std::vector<cl::Device> devices = context.getInfo<CL_CONTEXT_DEVICES>();
+            cl::Program             program(context, devices, binaries);
+            program.build();
+            CLKernelLibrary::get().add_built_program(name, program);
+        }
+        cache_file.close();
+    }
+}
+
+void save_program_cache_to_file(const std::string &filename)
+{
+    if(CLScheduler::get().is_initialised())
+    {
+        std::ofstream cache_file(filename, std::ios::binary);
+        if(cache_file.is_open())
+        {
+            for(const auto &it : CLKernelLibrary::get().get_built_programs())
+            {
+                std::vector<std::vector<unsigned char>> binaries = it.second.getInfo<CL_PROGRAM_BINARIES>();
+                ARM_COMPUTE_ERROR_ON(binaries.size() != 1);
+                const std::string kernel_name      = it.first;
+                size_t            kernel_name_size = kernel_name.length();
+                size_t            binary_size      = binaries[0].size();
+                cache_file.write(reinterpret_cast<char *>(&kernel_name_size), sizeof(size_t));
+                cache_file.write(reinterpret_cast<char *>(&binary_size), sizeof(size_t));
+                cache_file.write(kernel_name.c_str(), kernel_name_size);
+                cache_file.write(reinterpret_cast<const char *>(binaries[0].data()), binaries[0].size());
+            }
+            cache_file.close();
+        }
+        else
+        {
+            ARM_COMPUTE_ERROR("Cannot open cache file");
+        }
+    }
+}
+} // namespace arm_compute