opencl: better logging of devices and device selection

changes:
- Clew misses a lot of things, added defines needed for gathering
  platform and device info.
- Refactored profile saving and loading to use libxml2 instead
  the weird type of saving the profile data.
- Added an additional "log" file which is similar to the OpenGL
  but it writes the OpenCL relevant information like which devices
  and platforms are available (+ all the extra useful version
  information) and which device was selected (if any at all).

Change-Id: I0fe793c756f8f4f1761fe120fc361df36e581903
Reviewed-on: https://gerrit.libreoffice.org/24270Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Tested-by: Tomaž Vajngerl <quikee@gmail.com>

external/clew/source/include/clew/clew.h

@@ -412,19 +412,86 @@ typedef struct {
 #define CL_DEVICE_TYPE_CPU                          (1 << 1)
 #define CL_DEVICE_TYPE_GPU                          (1 << 2)
 #define CL_DEVICE_TYPE_ACCELERATOR                  (1 << 3)
+#define CL_DEVICE_TYPE_CUSTOM                       (1 << 4)
 #define CL_DEVICE_TYPE_ALL                          0xFFFFFFFF
 
 // cl_device_info
+#define CL_DEVICE_TYPE                              0x1000
+#define CL_DEVICE_VENDOR_ID                         0x1001
 #define CL_DEVICE_MAX_COMPUTE_UNITS                 0x1002
+#define CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS          0x1003
+#define CL_DEVICE_MAX_WORK_GROUP_SIZE               0x1004
+#define CL_DEVICE_MAX_WORK_ITEM_SIZES               0x1005
+#define CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR       0x1006
+#define CL_DEVICE_PREFERRED_VECTOR_WIDTH_SHORT      0x1007
+#define CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT        0x1008
+#define CL_DEVICE_PREFERRED_VECTOR_WIDTH_LONG       0x1009
 #define CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT      0x100A
+#define CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE     0x100B
 #define CL_DEVICE_MAX_CLOCK_FREQUENCY               0x100C
+#define CL_DEVICE_ADDRESS_BITS                      0x100D
+#define CL_DEVICE_MAX_READ_IMAGE_ARGS               0x100E
+#define CL_DEVICE_MAX_WRITE_IMAGE_ARGS              0x100F
+#define CL_DEVICE_MAX_MEM_ALLOC_SIZE                0x1010
+#define CL_DEVICE_IMAGE2D_MAX_WIDTH                 0x1011
+#define CL_DEVICE_IMAGE2D_MAX_HEIGHT                0x1012
+#define CL_DEVICE_IMAGE3D_MAX_WIDTH                 0x1013
+#define CL_DEVICE_IMAGE3D_MAX_HEIGHT                0x1014
+#define CL_DEVICE_IMAGE3D_MAX_DEPTH                 0x1015
+#define CL_DEVICE_IMAGE_SUPPORT                     0x1016
+#define CL_DEVICE_MAX_PARAMETER_SIZE                0x1017
+#define CL_DEVICE_MAX_SAMPLERS                      0x1018
+#define CL_DEVICE_MEM_BASE_ADDR_ALIGN               0x1019
+#define CL_DEVICE_MIN_DATA_TYPE_ALIGN_SIZE          0x101A
+#define CL_DEVICE_SINGLE_FP_CONFIG                  0x101B
+#define CL_DEVICE_GLOBAL_MEM_CACHE_TYPE             0x101C
+#define CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE         0x101D
+#define CL_DEVICE_GLOBAL_MEM_CACHE_SIZE             0x101E
 #define CL_DEVICE_GLOBAL_MEM_SIZE                   0x101F
+#define CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE          0x1020
+#define CL_DEVICE_MAX_CONSTANT_ARGS                 0x1021
+#define CL_DEVICE_LOCAL_MEM_TYPE                    0x1022
+#define CL_DEVICE_LOCAL_MEM_SIZE                    0x1023
+#define CL_DEVICE_ERROR_CORRECTION_SUPPORT          0x1024
+#define CL_DEVICE_PROFILING_TIMER_RESOLUTION        0x1025
+#define CL_DEVICE_ENDIAN_LITTLE                     0x1026
+#define CL_DEVICE_AVAILABLE                         0x1027
+#define CL_DEVICE_COMPILER_AVAILABLE                0x1028
+#define CL_DEVICE_EXECUTION_CAPABILITIES            0x1029
+#define CL_DEVICE_QUEUE_PROPERTIES                  0x102A
 #define CL_DEVICE_NAME                              0x102B
 #define CL_DEVICE_VENDOR                            0x102C
 #define CL_DRIVER_VERSION                           0x102D
+#define CL_DEVICE_PROFILE                           0x102E
 #define CL_DEVICE_VERSION                           0x102F
 #define CL_DEVICE_EXTENSIONS                        0x1030
 #define CL_DEVICE_PLATFORM                          0x1031
+#define CL_DEVICE_DOUBLE_FP_CONFIG                  0x1032
+/* 0x1033 reserved for CL_DEVICE_HALF_FP_CONFIG */
+#define CL_DEVICE_PREFERRED_VECTOR_WIDTH_HALF       0x1034
+#define CL_DEVICE_HOST_UNIFIED_MEMORY               0x1035
+#define CL_DEVICE_NATIVE_VECTOR_WIDTH_CHAR          0x1036
+#define CL_DEVICE_NATIVE_VECTOR_WIDTH_SHORT         0x1037
+#define CL_DEVICE_NATIVE_VECTOR_WIDTH_INT           0x1038
+#define CL_DEVICE_NATIVE_VECTOR_WIDTH_LONG          0x1039
+#define CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT         0x103A
+#define CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE        0x103B
+#define CL_DEVICE_NATIVE_VECTOR_WIDTH_HALF          0x103C
+#define CL_DEVICE_OPENCL_C_VERSION                  0x103D
+#define CL_DEVICE_LINKER_AVAILABLE                  0x103E
+#define CL_DEVICE_BUILT_IN_KERNELS                  0x103F
+#define CL_DEVICE_IMAGE_MAX_BUFFER_SIZE             0x1040
+#define CL_DEVICE_IMAGE_MAX_ARRAY_SIZE              0x1041
+#define CL_DEVICE_PARENT_DEVICE                     0x1042
+#define CL_DEVICE_PARTITION_MAX_SUB_DEVICES         0x1043
+#define CL_DEVICE_PARTITION_PROPERTIES              0x1044
+#define CL_DEVICE_PARTITION_AFFINITY_DOMAIN         0x1045
+#define CL_DEVICE_PARTITION_TYPE                    0x1046
+#define CL_DEVICE_REFERENCE_COUNT                   0x1047
+#define CL_DEVICE_PREFERRED_INTEROP_USER_SYNC       0x1048
+#define CL_DEVICE_PRINTF_BUFFER_SIZE                0x1049
+#define CL_DEVICE_IMAGE_PITCH_ALIGNMENT             0x104A
+#define CL_DEVICE_IMAGE_BASE_ADDRESS_ALIGNMENT      0x104B
 
 // cl_device_fp_config - bitfield
 #define CL_FP_DENORM                                (1 << 0)

opencl/Library_opencl.mk

@@ -24,6 +24,7 @@ $(eval $(call gb_Library_use_externals,opencl,\
     icu_headers \
     icui18n \
     icuuc \
+    libxml2 \
 ))
 
 $(eval $(call gb_Library_use_custom_headers,opencl,\
@@ -37,6 +38,7 @@ $(eval $(call gb_Library_use_libraries,opencl,\
     comphelper \
     cppu \
     sal \
+    tl \
 ))
 
 $(eval $(call gb_Library_add_exception_objects,opencl,\

opencl/inc/opencl_device.hxx

@@ -14,7 +14,7 @@
 
 namespace opencl {
 
-ds_device getDeviceSelection(const char* pFileName, bool bForceSelection = false);
+ds_device getDeviceSelection(OUString pFileName, bool bForceSelection = false);
 
 }
 

opencl/source/openclwrapper.cxx

@@ -703,9 +703,8 @@ bool switchOpenCLDevice(const OUString* pDevice, bool bAutoSelect, bool bForceEv
         rtl::Bootstrap::expandMacros(url);
         OUString path;
         osl::FileBase::getSystemPathFromFileURL(url,path);
-        OString dsFileName = rtl::OUStringToOString(path, RTL_TEXTENCODING_UTF8);
-        ds_device pSelectedDevice = getDeviceSelection(dsFileName.getStr(), bForceEvaluation);
-        pDeviceId = pSelectedDevice.oclDeviceID;
+        ds_device pSelectedDevice = getDeviceSelection(path, bForceEvaluation);
+        pDeviceId = pSelectedDevice.aDeviceID;
 
     }