Fix: expose gpu error names with static function

Author: ariedel-cern

GPU/GPUTracking/Global/GPUErrors.cxx

@@ -36,6 +36,7 @@ GPUd() void GPUErrors::raiseError(uint32_t code, uint32_t param1, uint32_t param
 #ifndef GPUCA_GPUCODE
 
 #include <cstring>
+#include <unordered_map>
 
 uint32_t GPUErrors::getMaxErrors()
 {
@@ -47,9 +48,20 @@ void GPUErrors::clear()
   memset(mErrors, 0, GPUCA_MAX_ERRORS * sizeof(*mErrors));
 }
 
+const std::unordered_map<uint32_t, const char*>& GPUErrors::getErrorNames()
+{
+  static std::unordered_map<uint32_t, const char*> errorNames = {
+#define GPUCA_ERROR_CODE(num, name, ...) {num, GPUCA_M_STR(name)},
+#include "GPUErrorCodes.h"
+#undef GPUCA_ERROR_CODE
+  };
+  return errorNames;
+}
+
 bool GPUErrors::printErrors(bool silent, uint64_t mask)
 {
   bool retVal = 0;
+  const auto& errorNames = getErrorNames();
   for (uint32_t i = 0; i < std::min(*mErrors, GPUCA_MAX_ERRORS); i++) {
     uint32_t errorCode = mErrors[4 * i + 1];
     const auto& it = errorNames.find(errorCode);

GPU/GPUTracking/Global/GPUErrors.h

@@ -16,18 +16,14 @@
 #define GPUERRORS_H
 
 #include "GPUCommonDef.h"
-#include "GPUDefMacros.h"
+
+#ifndef GPUCA_GPUCODE
 #include <unordered_map>
+#endif
 
 namespace o2::gpu
 {
 
-static std::unordered_map<uint32_t, const char*> errorNames = {
-#define GPUCA_ERROR_CODE(num, name, ...) {num, GPUCA_M_STR(name)},
-#include "GPUErrorCodes.h"
-#undef GPUCA_ERROR_CODE
-};
-
 class GPUErrors
 {
  public:
@@ -42,6 +38,7 @@ class GPUErrors
   void setMemory(GPUglobalref() uint32_t* m) { mErrors = m; }
   void clear();
   bool printErrors(bool silent = false, uint64_t mask = 0);
+  static const std::unordered_map<uint32_t, const char*>& getErrorNames();
   uint32_t getNErrors() const;
   const uint32_t* getErrorPtr() const;
   static uint32_t getMaxErrors();