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-rw-r--r--libnetdata/inlined.h318
1 files changed, 318 insertions, 0 deletions
diff --git a/libnetdata/inlined.h b/libnetdata/inlined.h
new file mode 100644
index 0000000..6f236b8
--- /dev/null
+++ b/libnetdata/inlined.h
@@ -0,0 +1,318 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_INLINED_H
+#define NETDATA_INLINED_H 1
+
+#include "libnetdata.h"
+
+#ifdef KERNEL_32BIT
+typedef uint32_t kernel_uint_t;
+#define str2kernel_uint_t(string) str2uint32_t(string)
+#define KERNEL_UINT_FORMAT "%u"
+#else
+typedef uint64_t kernel_uint_t;
+#define str2kernel_uint_t(string) str2uint64_t(string)
+#define KERNEL_UINT_FORMAT "%" PRIu64
+#endif
+
+#define str2pid_t(string) str2uint32_t(string)
+
+
+// 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 uint32_t str2uint32_t(const char *s) {
+ uint32_t n = 0;
+ char c;
+ for(c = *s; c >= '0' && c <= '9' ; c = *(++s)) {
+ n *= 10;
+ n += c - '0';
+ }
+ return n;
+}
+
+static inline uint64_t str2uint64_t(const char *s) {
+ uint64_t n = 0;
+ char c;
+ for(c = *s; c >= '0' && c <= '9' ; c = *(++s)) {
+ n *= 10;
+ n += c - '0';
+ }
+ 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;
+}
+
+static inline long long str2ll(const char *s, char **endptr) {
+ int negative = 0;
+
+ if(unlikely(*s == '-')) {
+ s++;
+ negative = 1;
+ }
+ else if(unlikely(*s == '+'))
+ s++;
+
+ long long n = 0;
+ char c;
+ for(c = *s; c >= '0' && c <= '9' ; c = *(++s)) {
+ n *= 10;
+ n += c - '0';
+ }
+
+ if(unlikely(endptr))
+ *endptr = (char *)s;
+
+ if(unlikely(negative))
+ return -n;
+ else
+ return n;
+}
+
+static inline long double str2ld(const char *s, char **endptr) {
+ int negative = 0;
+ const char *start = s;
+ unsigned long long integer_part = 0;
+ unsigned long decimal_part = 0;
+ size_t decimal_digits = 0;
+
+ switch(*s) {
+ case '-':
+ s++;
+ negative = 1;
+ break;
+
+ case '+':
+ s++;
+ break;
+
+ case 'n':
+ if(s[1] == 'a' && s[2] == 'n') {
+ if(endptr) *endptr = (char *)&s[3];
+ return NAN;
+ }
+ break;
+
+ case 'i':
+ if(s[1] == 'n' && s[2] == 'f') {
+ if(endptr) *endptr = (char *)&s[3];
+ return INFINITY;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ while (*s >= '0' && *s <= '9') {
+ integer_part = (integer_part * 10) + (*s - '0');
+ s++;
+ }
+
+ if(unlikely(*s == '.')) {
+ decimal_part = 0;
+ s++;
+
+ while (*s >= '0' && *s <= '9') {
+ decimal_part = (decimal_part * 10) + (*s - '0');
+ s++;
+ decimal_digits++;
+ }
+ }
+
+ if(unlikely(*s == 'e' || *s == 'E'))
+ return strtold(start, endptr);
+
+ if(unlikely(endptr))
+ *endptr = (char *)s;
+
+ if(unlikely(negative)) {
+ if(unlikely(decimal_digits))
+ return -((long double)integer_part + (long double)decimal_part / powl(10.0, decimal_digits));
+ else
+ return -((long double)integer_part);
+ }
+ else {
+ if(unlikely(decimal_digits))
+ return (long double)integer_part + (long double)decimal_part / powl(10.0, decimal_digits);
+ else
+ return (long double)integer_part;
+ }
+}
+
+#ifdef NETDATA_STRCMP_OVERRIDE
+#ifdef strcmp
+#undef strcmp
+#endif
+#define strcmp(a, b) strsame(a, b)
+#endif // NETDATA_STRCMP_OVERRIDE
+
+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;
+}
+
+static inline char *strncpyz(char *dst, const char *src, size_t n) {
+ char *p = dst;
+
+ while (*src && n--)
+ *dst++ = *src++;
+
+ *dst = '\0';
+
+ return p;
+}
+
+static inline void sanitize_json_string(char *dst, char *src, size_t len) {
+ while (*src != '\0' && len > 1) {
+ if (*src == '\\' || *src == '\"' || *src < 0x1F) {
+ if (*src < 0x1F) {
+ *dst++ = '_';
+ src++;
+ len--;
+ } else {
+ *dst++ = '\\';
+ *dst++ = *src++;
+ len -= 2;
+ }
+ } else {
+ *dst++ = *src++;
+ len--;
+ }
+ }
+ *dst = '\0';
+}
+
+static inline int read_file(const char *filename, char *buffer, size_t size) {
+ if(unlikely(!size)) return 3;
+
+ int fd = open(filename, O_RDONLY, 0666);
+ if(unlikely(fd == -1)) {
+ buffer[0] = '\0';
+ return 1;
+ }
+
+ ssize_t r = read(fd, buffer, size);
+ if(unlikely(r == -1)) {
+ buffer[0] = '\0';
+ close(fd);
+ return 2;
+ }
+ buffer[r] = '\0';
+
+ close(fd);
+ return 0;
+}
+
+static inline int read_single_number_file(const char *filename, unsigned long long *result) {
+ char buffer[30 + 1];
+
+ int ret = read_file(filename, buffer, 30);
+ if(unlikely(ret)) {
+ *result = 0;
+ return ret;
+ }
+
+ buffer[30] = '\0';
+ *result = str2ull(buffer);
+ return 0;
+}
+
+static inline int read_single_signed_number_file(const char *filename, long long *result) {
+ char buffer[30 + 1];
+
+ int ret = read_file(filename, buffer, 30);
+ if(unlikely(ret)) {
+ *result = 0;
+ return ret;
+ }
+
+ buffer[30] = '\0';
+ *result = atoll(buffer);
+ return 0;
+}
+
+#endif //NETDATA_INLINED_H
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