refactor: Unify GTPin initialization logic between APIs

Add support for new GTPin loading logic in OCL path, similar to existing
in L0 - invoking exposed, dedicated API call (OpenGTPinOCL).
- Move logic to shared, including unit tests
- Check whether instrumentation is required on
  clGetPlatformIDs API call, and if yes,
  make a call to OpenGTPinOCL function.
Signed-off-by: Kacper Nowak <kacper.nowak@intel.com>

opencl/source/platform/platform.cpp

@@ -17,6 +17,7 @@
 #include "shared/source/helpers/debug_helpers.h"
 #include "shared/source/helpers/get_info.h"
 #include "shared/source/helpers/hw_info.h"
+#include "shared/source/pin/pin.h"
 #include "shared/source/source_level_debugger/source_level_debugger.h"
 
 #include "opencl/source/api/api.h"
@@ -185,6 +186,17 @@ bool Platform::initialize(std::vector<std::unique_ptr<Device>> devices) {
     return true;
 }
 
+bool Platform::notifyGtpinInit() {
+    bool res = false;
+    auto notifyGTPin = [](bool &res) {
+        const std::string gtpinFuncName{"OpenGTPinOCL"};
+        res = PinContext::init(gtpinFuncName);
+        return;
+    };
+    std::call_once(this->oclInitGTPinOnce, notifyGTPin, res);
+    return res;
+}
+
 void Platform::fillGlobalDispatchTable() {
     sharingFactory.fillGlobalDispatchTable();
 }

opencl/source/platform/platform.h

@@ -48,6 +48,7 @@ class Platform : public BaseObject<_cl_platform_id> {
 
     MOCKABLE_VIRTUAL bool initialize(std::vector<std::unique_ptr<Device>> devices);
     bool isInitialized();
+    bool notifyGtpinInit();
 
     size_t getNumDevices() const;
     ClDevice **getClDevices();
@@ -71,6 +72,7 @@ class Platform : public BaseObject<_cl_platform_id> {
     ClDeviceVector clDevices;
     ExecutionEnvironment &executionEnvironment;
     std::once_flag initializeExtensionsWithVersionOnce;
+    std::once_flag oclInitGTPinOnce;
 };
 
 extern std::vector<std::unique_ptr<Platform>> *platformsImpl;