3 #ifndef NETDATA_COMMON_H
4 #define NETDATA_COMMON_H 1
6 #define abs(x) ((x < 0)? -x : x)
7 #define usecdiff(now, last) (((((now)->tv_sec * 1000000ULL) + (now)->tv_usec) - (((last)->tv_sec * 1000000ULL) + (last)->tv_usec)))
9 extern uint32_t simple_hash(const char *name);
10 extern void strreverse(char* begin, char* end);
11 extern char *mystrsep(char **ptr, char *s);
12 extern char *trim(char *s);
14 extern void *mymmap(const char *filename, unsigned long size, int flags);
15 extern int savememory(const char *filename, void *mem, unsigned long size);
17 extern int fd_is_valid(int fd);
19 #endif /* NETDATA_COMMON_H */