1 files changed, 123 insertions, 0 deletions
diff --git a/libs/ARMComputeEx/src/core/CL/OpenCLEx.cpp b/libs/ARMComputeEx/src/core/CL/OpenCLEx.cpp
new file mode 100644
index 000000000..cbda169fb
--- /dev/null
+++ b/libs/ARMComputeEx/src/core/CL/OpenCLEx.cpp
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ * Copyright (c) 2016-2018 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/CL/OpenCLEx.h"
+
+#include <dlfcn.h>
+#include <iostream>
+
+namespace arm_compute
+{
+CLSymbolsEx &CLSymbolsEx::get()
+{
+  static CLSymbolsEx symbols;
+  return symbols;
+}
+
+bool CLSymbolsEx::load_default()
+{
+  static const std::vector<std::string> libraries{"libOpenCL.so", "libGLES_mali.so", "libmali.so"};
+
+  if (_loaded.first)
+  {
+    return _loaded.second;
+  }
+
+  // Indicate that default loading has been tried
+  _loaded.first = true;
+
+  for (const auto &lib : libraries)
+  {
+    if (load(lib))
+    {
+      return true;
+    }
+  }
+
+  std::cerr << "Couldn't find any OpenCL library.\n";
+  return false;
+}
+
+bool CLSymbolsEx::load(const std::string &library)
+{
+  void *handle = dlopen(library.c_str(), RTLD_LAZY | RTLD_LOCAL);
+
+  if (handle == nullptr)
+  {
+    std::cerr << "Can't load " << library << ": " << dlerror() << "\n";
+    // Set status of loading to failed
+    _loaded.second = false;
+    return false;
+  }
+
+#define LOAD_FUNCTION_PTR(func_name, handle) \
+  func_name##_ptr = reinterpret_cast<decltype(func_name) *>(dlsym(handle, #func_name));
+
+  LOAD_FUNCTION_PTR(clGetEventInfo, handle);
+  LOAD_FUNCTION_PTR(clSetEventCallback, handle);
+
+#undef LOAD_FUNCTION_PTR
+
+  // Don't call dlclose(handle) or all the symbols will be unloaded !
+
+  // Disable default loading and set status to successful
+  _loaded = std::make_pair(true, true);
+
+  return true;
+}
+
+} // namespace arm_compute
+
+cl_int clGetEventInfo(cl_event event, cl_event_info param_name, size_t param_value_size,
+                      void *param_value, size_t *param_value_size_ret)
+{
+  arm_compute::CLSymbolsEx::get().load_default();
+  auto func = arm_compute::CLSymbolsEx::get().clGetEventInfo_ptr;
+  if (func != nullptr)
+  {
+    return func(event, param_name, param_value_size, param_value, param_value_size_ret);
+  }
+  else
+  {
+    return CL_OUT_OF_RESOURCES;
+  }
+}
+
+cl_int clSetEventCallback(cl_event event, cl_int command_exec_callback_type,
+                          void(CL_CALLBACK *pfn_ev_notify)(cl_event ev, cl_int ev_cmd_exec_status,
+                                                           void *user_data),
+                          void *user_data)
+{
+  arm_compute::CLSymbolsEx::get().load_default();
+  auto func = arm_compute::CLSymbolsEx::get().clSetEventCallback_ptr;
+  if (func != nullptr)
+  {
+    return func(event, command_exec_callback_type, pfn_ev_notify, user_data);
+  }
+  else
+  {
+    return CL_OUT_OF_RESOURCES;
+  }
+}