#include <sys/types.h>
#define malloc "DON'T USE MALLOC" // use nbd_malloc() instead
+#define calloc "DON'T USE CALLOC" // use nbd_malloc() instead
#define free "DON'T USE FREE" // use nbd_free() instead
#define MAX_NUM_THREADS 4 // make this whatever you want, but make it a power of 2
#define ERROR_INVALID_OPTION (-1)
#define ERROR_INVALID_ARGUMENT (-2)
#define ERROR_UNSUPPORTED_FEATURE (-3)
+#define ERROR_TXN_NOT_RUNNING (-4)
typedef unsigned long long uint64_t;
typedef unsigned int uint32_t;