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Diffstat (limited to 'database/engine/rrdenginelib.h')
| -rw-r--r-- | database/engine/rrdenginelib.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/database/engine/rrdenginelib.h b/database/engine/rrdenginelib.h new file mode 100644 index 0000000..ebab93c --- /dev/null +++ b/database/engine/rrdenginelib.h @@ -0,0 +1,144 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#ifndef NETDATA_RRDENGINELIB_H +#define NETDATA_RRDENGINELIB_H + +/* Forward declarations */ +struct rrdeng_page_descr; +struct rrdengine_instance; + +#define STR_HELPER(x) #x +#define STR(x) STR_HELPER(x) + +#define BITS_PER_ULONG (sizeof(unsigned long) * 8) + +#ifndef UUID_STR_LEN +#define UUID_STR_LEN (37) +#endif + +/* Taken from linux kernel */ +#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) + +#define ALIGN_BYTES_FLOOR(x) (((x) / RRDENG_BLOCK_SIZE) * RRDENG_BLOCK_SIZE) +#define ALIGN_BYTES_CEILING(x) ((((x) + RRDENG_BLOCK_SIZE - 1) / RRDENG_BLOCK_SIZE) * RRDENG_BLOCK_SIZE) + +#define ROUND_USEC_TO_SEC(x) (((x) + USEC_PER_SEC / 2 - 1) / USEC_PER_SEC) + +typedef uintptr_t rrdeng_stats_t; + +#ifdef __ATOMIC_RELAXED +#define rrd_atomic_fetch_add(p, n) __atomic_fetch_add(p, n, __ATOMIC_RELAXED) +#define rrd_atomic_add_fetch(p, n) __atomic_add_fetch(p, n, __ATOMIC_RELAXED) +#else +#define rrd_atomic_fetch_add(p, n) __sync_fetch_and_add(p, n) +#define rrd_atomic_add_fetch(p, n) __sync_add_and_fetch(p, n) +#endif + +#define rrd_stat_atomic_add(p, n) rrd_atomic_fetch_add(p, n) + +/* returns -1 if it didn't find the first cleared bit, the position otherwise. Starts from LSB. */ +static inline int find_first_zero(unsigned x) +{ + return ffs((int)(~x)) - 1; +} + +/* Starts from LSB. */ +static inline uint8_t check_bit(unsigned x, size_t pos) +{ + return !!(x & (1 << pos)); +} + +/* Starts from LSB. val is 0 or 1 */ +static inline void modify_bit(unsigned *x, unsigned pos, uint8_t val) +{ + switch(val) { + case 0: + *x &= ~(1U << pos); + break; + case 1: + *x |= 1U << pos; + break; + default: + error("modify_bit() called with invalid argument."); + break; + } +} + +#define RRDENG_PATH_MAX (4096) + +/* returns old *ptr value */ +static inline unsigned long ulong_compare_and_swap(volatile unsigned long *ptr, + unsigned long oldval, unsigned long newval) +{ + return __sync_val_compare_and_swap(ptr, oldval, newval); +} + +#ifndef O_DIRECT +/* Workaround for OS X */ +#define O_DIRECT (0) +#endif + +struct completion { + uv_mutex_t mutex; + uv_cond_t cond; + volatile unsigned completed; +}; + +static inline void init_completion(struct completion *p) +{ + p->completed = 0; + fatal_assert(0 == uv_cond_init(&p->cond)); + fatal_assert(0 == uv_mutex_init(&p->mutex)); +} + +static inline void destroy_completion(struct completion *p) +{ + uv_cond_destroy(&p->cond); + uv_mutex_destroy(&p->mutex); +} + +static inline void wait_for_completion(struct completion *p) +{ + uv_mutex_lock(&p->mutex); + while (0 == p->completed) { + uv_cond_wait(&p->cond, &p->mutex); + } + fatal_assert(1 == p->completed); + uv_mutex_unlock(&p->mutex); +} + +static inline void complete(struct completion *p) +{ + uv_mutex_lock(&p->mutex); + p->completed = 1; + uv_mutex_unlock(&p->mutex); + uv_cond_broadcast(&p->cond); +} + +static inline int crc32cmp(void *crcp, uLong crc) +{ + return (*(uint32_t *)crcp != crc); +} + +static inline void crc32set(void *crcp, uLong crc) +{ + *(uint32_t *)crcp = crc; +} + +extern void print_page_cache_descr(struct rrdeng_page_descr *page_cache_descr); +extern void print_page_descr(struct rrdeng_page_descr *descr); +extern int check_file_properties(uv_file file, uint64_t *file_size, size_t min_size); +extern int open_file_for_io(char *path, int flags, uv_file *file, int direct); +static inline int open_file_direct_io(char *path, int flags, uv_file *file) +{ + return open_file_for_io(path, flags, file, 1); +} +static inline int open_file_buffered_io(char *path, int flags, uv_file *file) +{ + return open_file_for_io(path, flags, file, 0); +} +extern char *get_rrdeng_statistics(struct rrdengine_instance *ctx, char *str, size_t size); +extern int compute_multidb_diskspace(); +extern int is_legacy_child(const char *machine_guid); + +#endif /* NETDATA_RRDENGINELIB_H */
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