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#ifndef NETDATA_INLINED_H
#define NETDATA_INLINED_H
#include "common.h"
// for faster execution, allow the compiler to inline
// these functions that are called thousands of times per second
static inline uint32_t simple_hash(const char *name) {
unsigned char *s = (unsigned char *) name;
uint32_t hval = 0x811c9dc5;
while (*s) {
hval *= 16777619;
hval ^= (uint32_t) *s++;
}
return hval;
}
static inline uint32_t simple_uhash(const char *name) {
unsigned char *s = (unsigned char *) name;
uint32_t hval = 0x811c9dc5, c;
while ((c = *s++)) {
if (unlikely(c >= 'A' && c <= 'Z')) c += 'a' - 'A';
hval *= 16777619;
hval ^= c;
}
return hval;
}
static inline int simple_hash_strcmp(const char *name, const char *b, uint32_t *hash) {
unsigned char *s = (unsigned char *) name;
uint32_t hval = 0x811c9dc5;
int ret = 0;
while (*s) {
if(!ret) ret = *s - *b++;
hval *= 16777619;
hval ^= (uint32_t) *s++;
}
*hash = hval;
return ret;
}
static inline int str2i(const char *s) {
int n = 0;
char c, negative = (*s == '-');
for(c = (negative)?*(++s):*s; c >= '0' && c <= '9' ; c = *(++s)) {
n *= 10;
n += c - '0';
}
if(unlikely(negative))
return -n;
return n;
}
static inline long str2l(const char *s) {
long n = 0;
char c, negative = (*s == '-');
for(c = (negative)?*(++s):*s; c >= '0' && c <= '9' ; c = *(++s)) {
n *= 10;
n += c - '0';
}
if(unlikely(negative))
return -n;
return n;
}
static inline unsigned long str2ul(const char *s) {
unsigned long n = 0;
char c;
for(c = *s; c >= '0' && c <= '9' ; c = *(++s)) {
n *= 10;
n += c - '0';
}
return n;
}
static inline unsigned long long str2ull(const char *s) {
unsigned long long n = 0;
char c;
for(c = *s; c >= '0' && c <= '9' ; c = *(++s)) {
n *= 10;
n += c - '0';
}
return n;
}
#ifdef NETDATA_STRCMP_OVERRIDE
#ifdef strcmp
#undef strcmp
#endif
#define strcmp(a, b) strsame(a, b)
static inline int strsame(const char *a, const char *b) {
if(unlikely(a == b)) return 0;
while(*a && *a == *b) { a++; b++; }
return *a - *b;
}
#endif // NETDATA_STRSAME
static inline int read_single_number_file(const char *filename, unsigned long long *result) {
char buffer[30 + 1];
int fd = open(filename, O_RDONLY, 0666);
if(unlikely(fd == -1)) {
*result = 0;
return 1;
}
ssize_t r = read(fd, buffer, 30);
if(unlikely(r == -1)) {
*result = 0;
close(fd);
return 2;
}
close(fd);
buffer[30] = '\0';
*result = str2ull(buffer);
return 0;
}
#endif //NETDATA_INLINED_H
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