Add ComputeManager; add SmoHooks for getting ClDevices, buffers

We added a new centralized OpenCL Compute manager. This can later
be extended to support CUDA, SyCL, etc. SMO can be configured at
build time to choose which API it will use for compute.

Moreover, the ComputeMgr allows us to register buffers which are
available to all cl_contexts.

smocore/stimBuffApis/stimBuffApiManager.cpp

@@ -13,6 +13,7 @@
 #include <mind.h>
 #include <deviceManager/deviceManager.h>
 #include <marionette/marionette.h>
+#include <computeManager/computeManager.h>
 
 
 namespace fs = std::filesystem;
@@ -85,6 +86,36 @@ static OptionParser& OptionParser_getOptions()
 	return OptionParser::getOptions();
 }
 
+/* Local static functions to wrap ComputeManager methods for SmoCallbacks */
+static std::shared_ptr<smo::compute::ClBuffer>
+ComputeManager_createUseHostPtrBuffer(
+	void* hostPtr, size_t size, cl_mem_flags flags
+	)
+{
+	return smo::compute::ComputeManager::getInstance().createUseHostPtrBuffer(
+		hostPtr, size, flags);
+}
+
+static void ComputeManager_releaseUseHostPtrBuffer(
+	std::shared_ptr<smo::compute::ClBuffer> buffer
+	)
+{
+	smo::compute::ComputeManager::getInstance().releaseUseHostPtrBuffer(
+		buffer);
+}
+
+static std::shared_ptr<smo::compute::ComputeDevice> ComputeManager_getDevice()
+{
+	return smo::compute::ComputeManager::getInstance().getDevice();
+}
+
+static void ComputeManager_releaseDevice(
+	std::shared_ptr<smo::compute::ComputeDevice> device
+	)
+{
+	smo::compute::ComputeManager::getInstance().releaseDevice(device);
+}
+
 /* Hooks to be provided to stimBuffApiLibs, enabling them to call into Salmanoff
  * code.
  */
@@ -92,7 +123,13 @@ static SmoCallbacks smoCallbacks =
 {
 	.searchForLibInSmoSearchPaths = searchForLibInSmoSearchPaths,
 	.ComponentThread_getSelf = ComponentThread_getSelf,
-	.OptionParser_getOptions = OptionParser_getOptions
+	.OptionParser_getOptions = OptionParser_getOptions,
+	.ComputeManager_createUseHostPtrBuffer =
+		ComputeManager_createUseHostPtrBuffer,
+	.ComputeManager_releaseUseHostPtrBuffer =
+		ComputeManager_releaseUseHostPtrBuffer,
+	.ComputeManager_getDevice = ComputeManager_getDevice,
+	.ComputeManager_releaseDevice = ComputeManager_releaseDevice
 };
 
 /* Static file-scope threading model object for senseApi libraries */