1 files changed, 31 insertions, 0 deletions

diff --git a/testbench.h b/testbench.h
new file mode 100644
index 0000000..dff1211
--- /dev/null
+++ b/testbench.h
@@ -0,0 +1,31 @@
+/* Copyright 2021-2023 Joshua Bakita
+ * Header for miscellaneous experimental helper functions.
+ */
+
+// cudaError_t and CUResult can both safely be cast to an unsigned int
+static __thread unsigned int __SAFE_err;
+
+// The very strange cast in these macros is to satisfy two goals at tension:
+// 1. This file should be able to be included in non-CUDA-using files, and thus
+//    should use no CUDA types outside of this macro.
+// 2. We want to typecheck uses of these macros. The driver and runtime APIs
+//    do not have identical error numbers and/or meanings, so runtime library
+//    calls should use SAFE, and driver library calls should use SAFE_D.
+// These macros allow typechecking, but keep a generic global error variable.
+#define SAFE(x) \
+        if ((*(cudaError_t*)(&__SAFE_err) = (x)) != 0) { \
+                printf("(%s:%d) CUDA error %d: %s i.e. \"%s\" returned by %s. Aborting...\n", \
+                       __FILE__, __LINE__, __SAFE_err, cudaGetErrorName((cudaError_t)__SAFE_err), cudaGetErrorString((cudaError_t)__SAFE_err), #x); \
+                exit(1); \
+        }
+
+#define SAFE_D(x) \
+        if ((*(CUresult*)&(__SAFE_err) = (x)) != 0) { \
+                const char* name; \
+                const char* desc; \
+                cuGetErrorName((CUresult)__SAFE_err, &name); \
+                cuGetErrorString((CUresult)__SAFE_err, &desc); \
+                printf("(%s:%d) CUDA error %d: %s i.e. \"%s\" returned by %s. Aborting...\n", \
+                       __FILE__, __LINE__, __SAFE_err, name, desc, #x); \
+                exit(1); \
+        }