chore: import upstream snapshot with attribution

gpu_easygraph/common/common.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "err.h"
+
+#define EG_DOUBLE_INF 1e100
+
+#define EXIT_IF_CUDA_FAILED(condition)              \
+        cuda_ret = condition;                       \
+        if (cuda_ret != cudaSuccess) {              \
+            goto exit;                              \
+        }                                           \
+
+#ifndef _IN_
+#define _IN_
+#endif
+
+#ifndef _OUT_
+#define _OUT_
+#endif
+
+#ifndef _BUFFER_
+#define _BUFFER_
+#endif

gpu_easygraph/common/err.cpp

@@ -0,0 +1,31 @@
+#include <string>
+
+#include "err.h"
+
+namespace gpu_easygraph {
+
+using std::string;
+
+std::string err_code_detail(
+    int status
+) {
+    switch (status) {
+        case EG_GPU_SUCC:
+            return "EasyGraph GPU: success";
+        case EG_GPU_FAILED_TO_ALLOCATE_HOST_MEM:
+            return "EasyGraph GPU: failed to allocate host mem";
+        case EG_GPU_FAILED_TO_ALLOCATE_DEVICE_MEM:
+            return "EasyGraph GPU: failed to allocate gpu mem";
+        case EG_GPU_DEVICE_ERR:
+            return "EasyGraph GPU: gpu error occurred";
+        case EG_GPU_UNKNOW_ERROR:
+            return "EasyGraph GPU: gpu unkonw error";
+        case EG_UNSUPPORTED_GRAPH:
+            return "EasyGraph GPU: unsupported graph type";
+        default:
+            break;
+    }
+    return "EasyGraph GPU: not a valid err_code";
+}
+
+} // namespace gpu_easygraph

gpu_easygraph/common/err.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <string>
+
+namespace gpu_easygraph {
+
+typedef enum {
+    EG_GPU_SUCC = 0,
+    EG_GPU_FAILED_TO_ALLOCATE_HOST_MEM,
+    EG_GPU_FAILED_TO_ALLOCATE_DEVICE_MEM,
+    EG_GPU_DEVICE_ERR,
+    EG_GPU_UNKNOW_ERROR,
+    EG_UNSUPPORTED_GRAPH
+} EG_GPU_STATUS_CODE;
+
+std::string err_code_detail(
+    int status
+);
+
+} // namespace gpu_easygraph