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Diffstat (limited to 'libnetdata/libnetdata.h')
| -rw-r--r-- | libnetdata/libnetdata.h | 507 |
1 files changed, 507 insertions, 0 deletions
diff --git a/libnetdata/libnetdata.h b/libnetdata/libnetdata.h new file mode 100644 index 0000000..58eaa9d --- /dev/null +++ b/libnetdata/libnetdata.h @@ -0,0 +1,507 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#ifndef NETDATA_LIB_H +#define NETDATA_LIB_H 1 + +# ifdef __cplusplus +extern "C" { +# endif + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#if defined(NETDATA_DEV_MODE) && !defined(NETDATA_INTERNAL_CHECKS) +#define NETDATA_INTERNAL_CHECKS 1 +#endif + +// NETDATA_TRACE_ALLOCATIONS does not work under musl libc, so don't enable it +//#if defined(NETDATA_INTERNAL_CHECKS) && !defined(NETDATA_TRACE_ALLOCATIONS) +//#define NETDATA_TRACE_ALLOCATIONS 1 +//#endif + +#define OS_LINUX 1 +#define OS_FREEBSD 2 +#define OS_MACOS 3 + + +// ---------------------------------------------------------------------------- +// system include files for all netdata C programs + +/* select the memory allocator, based on autoconf findings */ +#if defined(ENABLE_JEMALLOC) + +#if defined(HAVE_JEMALLOC_JEMALLOC_H) +#include <jemalloc/jemalloc.h> +#else // !defined(HAVE_JEMALLOC_JEMALLOC_H) +#include <malloc.h> +#endif // !defined(HAVE_JEMALLOC_JEMALLOC_H) + +#elif defined(ENABLE_TCMALLOC) + +#include <google/tcmalloc.h> + +#else /* !defined(ENABLE_JEMALLOC) && !defined(ENABLE_TCMALLOC) */ + +#if !(defined(__FreeBSD__) || defined(__APPLE__)) +#include <malloc.h> +#endif /* __FreeBSD__ || __APPLE__ */ + +#endif /* !defined(ENABLE_JEMALLOC) && !defined(ENABLE_TCMALLOC) */ + +// ---------------------------------------------------------------------------- + +#if defined(__FreeBSD__) +#include <pthread_np.h> +#define NETDATA_OS_TYPE "freebsd" +#elif defined(__APPLE__) +#define NETDATA_OS_TYPE "macos" +#else +#define NETDATA_OS_TYPE "linux" +#endif /* __FreeBSD__, __APPLE__*/ + +#include <pthread.h> +#include <errno.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <stddef.h> +#include <ctype.h> +#include <string.h> +#include <strings.h> +#include <arpa/inet.h> +#include <netinet/tcp.h> +#include <sys/ioctl.h> +#include <libgen.h> +#include <dirent.h> +#include <fcntl.h> +#include <getopt.h> +#include <grp.h> +#include <pwd.h> +#include <limits.h> +#include <locale.h> +#include <net/if.h> +#include <poll.h> +#include <signal.h> +#include <syslog.h> +#include <sys/mman.h> +#include <sys/resource.h> +#include <sys/socket.h> +#include <sys/syscall.h> +#include <sys/time.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <sys/un.h> +#include <time.h> +#include <unistd.h> +#include <uuid/uuid.h> +#include <spawn.h> +#include <uv.h> +#include <assert.h> + +// CentOS 7 has older version that doesn't define this +// same goes for MacOS +#ifndef UUID_STR_LEN +#define UUID_STR_LEN (37) +#endif + +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif + +#ifdef HAVE_RESOLV_H +#include <resolv.h> +#endif + +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif + +#ifdef HAVE_SYS_PRCTL_H +#include <sys/prctl.h> +#endif + +#ifdef HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif + +#ifdef HAVE_SYS_VFS_H +#include <sys/vfs.h> +#endif + +#ifdef HAVE_SYS_STATFS_H +#include <sys/statfs.h> +#endif + +#ifdef HAVE_LINUX_MAGIC_H +#include <linux/magic.h> +#endif + +#ifdef HAVE_SYS_MOUNT_H +#include <sys/mount.h> +#endif + +#ifdef HAVE_SYS_STATVFS_H +#include <sys/statvfs.h> +#endif + +// #1408 +#ifdef MAJOR_IN_MKDEV +#include <sys/mkdev.h> +#endif +#ifdef MAJOR_IN_SYSMACROS +#include <sys/sysmacros.h> +#endif + +#ifdef STORAGE_WITH_MATH +#include <math.h> +#include <float.h> +#endif + +#if defined(HAVE_INTTYPES_H) +#include <inttypes.h> +#elif defined(HAVE_STDINT_H) +#include <stdint.h> +#endif + +#ifdef NETDATA_WITH_ZLIB +#include <zlib.h> +#endif + +#ifdef HAVE_CAPABILITY +#include <sys/capability.h> +#endif + + +// ---------------------------------------------------------------------------- +// netdata common definitions + +#ifdef __GNUC__ +#define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) +#endif // __GNUC__ + +#ifdef HAVE_FUNC_ATTRIBUTE_RETURNS_NONNULL +#define NEVERNULL __attribute__((returns_nonnull)) +#else +#define NEVERNULL +#endif + +#ifdef HAVE_FUNC_ATTRIBUTE_NOINLINE +#define NOINLINE __attribute__((noinline)) +#else +#define NOINLINE +#endif + +#ifdef HAVE_FUNC_ATTRIBUTE_MALLOC +#define MALLOCLIKE __attribute__((malloc)) +#else +#define MALLOCLIKE +#endif + +#ifdef HAVE_FUNC_ATTRIBUTE_FORMAT +#define PRINTFLIKE(f, a) __attribute__ ((format(__printf__, f, a))) +#else +#define PRINTFLIKE(f, a) +#endif + +#ifdef HAVE_FUNC_ATTRIBUTE_NORETURN +#define NORETURN __attribute__ ((noreturn)) +#else +#define NORETURN +#endif + +#ifdef HAVE_FUNC_ATTRIBUTE_WARN_UNUSED_RESULT +#define WARNUNUSED __attribute__ ((warn_unused_result)) +#else +#define WARNUNUSED +#endif + +#define ABS(x) (((x) < 0)? (-(x)) : (x)) +#define MIN(a,b) (((a)<(b))?(a):(b)) +#define MAX(a,b) (((a)>(b))?(a):(b)) + +#define GUID_LEN 36 + +// --------------------------------------------------------------------------------------------- +// double linked list management + +#define DOUBLE_LINKED_LIST_PREPEND_UNSAFE(head, item, prev, next) \ + do { \ + (item)->next = (head); \ + \ + if(likely(head)) { \ + (item)->prev = (head)->prev; \ + (head)->prev = (item); \ + } \ + else \ + (item)->prev = (item); \ + \ + (head) = (item); \ + } while (0) + +#define DOUBLE_LINKED_LIST_APPEND_UNSAFE(head, item, prev, next) \ + do { \ + if(likely(head)) { \ + (item)->prev = (head)->prev; \ + (head)->prev->next = (item); \ + (head)->prev = (item); \ + (item)->next = NULL; \ + } \ + else { \ + (head) = (item); \ + (head)->prev = (head); \ + (head)->next = NULL; \ + } \ + \ + } while (0) + +#define DOUBLE_LINKED_LIST_REMOVE_UNSAFE(head, item, prev, next) \ + do { \ + fatal_assert((head) != NULL); \ + fatal_assert((item)->prev != NULL); \ + \ + if((item)->prev == (item)) { \ + /* it is the only item in the list */ \ + (head) = NULL; \ + } \ + else if((item) == (head)) { \ + /* it is the first item */ \ + (item)->next->prev = (item)->prev; \ + (head) = (item)->next; \ + } \ + else { \ + (item)->prev->next = (item)->next; \ + if ((item)->next) { \ + (item)->next->prev = (item)->prev; \ + } \ + else { \ + (head)->prev = (item)->prev; \ + } \ + } \ + \ + (item)->next = NULL; \ + (item)->prev = NULL; \ + } while (0) + +#define DOUBLE_LINKED_LIST_FOREACH_FORWARD(head, var, prev, next) \ + for ((var) = (head); (var) ; (var) = (var)->next) + +#define DOUBLE_LINKED_LIST_FOREACH_BACKWARD(head, var, prev, next) \ + for ((var) = (head)?(head)->prev:NULL; (var) && (var) != (head)->prev ; (var) = (var)->prev) + +// --------------------------------------------------------------------------------------------- + + +void netdata_fix_chart_id(char *s); +void netdata_fix_chart_name(char *s); + +void strreverse(char* begin, char* end); +char *mystrsep(char **ptr, char *s); +char *trim(char *s); // remove leading and trailing spaces; may return NULL +char *trim_all(char *buffer); // like trim(), but also remove duplicate spaces inside the string; may return NULL + +int vsnprintfz(char *dst, size_t n, const char *fmt, va_list args); +int snprintfz(char *dst, size_t n, const char *fmt, ...) PRINTFLIKE(3, 4); + +// memory allocation functions that handle failures +#ifdef NETDATA_TRACE_ALLOCATIONS +int malloc_trace_walkthrough(int (*callback)(void *item, void *data), void *data); + +#define strdupz(s) strdupz_int(s, __FILE__, __FUNCTION__, __LINE__) +#define callocz(nmemb, size) callocz_int(nmemb, size, __FILE__, __FUNCTION__, __LINE__) +#define mallocz(size) mallocz_int(size, __FILE__, __FUNCTION__, __LINE__) +#define reallocz(ptr, size) reallocz_int(ptr, size, __FILE__, __FUNCTION__, __LINE__) +#define freez(ptr) freez_int(ptr, __FILE__, __FUNCTION__, __LINE__) +#define mallocz_usable_size(ptr) mallocz_usable_size_int(ptr, __FILE__, __FUNCTION__, __LINE__) + +char *strdupz_int(const char *s, const char *file, const char *function, size_t line); +void *callocz_int(size_t nmemb, size_t size, const char *file, const char *function, size_t line); +void *mallocz_int(size_t size, const char *file, const char *function, size_t line); +void *reallocz_int(void *ptr, size_t size, const char *file, const char *function, size_t line); +void freez_int(void *ptr, const char *file, const char *function, size_t line); +size_t mallocz_usable_size_int(void *ptr, const char *file, const char *function, size_t line); + +#else // NETDATA_TRACE_ALLOCATIONS +char *strdupz(const char *s) MALLOCLIKE NEVERNULL; +void *callocz(size_t nmemb, size_t size) MALLOCLIKE NEVERNULL; +void *mallocz(size_t size) MALLOCLIKE NEVERNULL; +void *reallocz(void *ptr, size_t size) MALLOCLIKE NEVERNULL; +void freez(void *ptr); +#endif // NETDATA_TRACE_ALLOCATIONS + +void posix_memfree(void *ptr); + +void json_escape_string(char *dst, const char *src, size_t size); +void json_fix_string(char *s); + +void *netdata_mmap(const char *filename, size_t size, int flags, int ksm); +int netdata_munmap(void *ptr, size_t size); +int memory_file_save(const char *filename, void *mem, size_t size); + +int fd_is_valid(int fd); + +extern struct rlimit rlimit_nofile; + +extern int enable_ksm; + +char *fgets_trim_len(char *buf, size_t buf_size, FILE *fp, size_t *len); + +int verify_netdata_host_prefix(); + +int recursively_delete_dir(const char *path, const char *reason); + +extern volatile sig_atomic_t netdata_exit; + +extern const char *program_version; + +char *strdupz_path_subpath(const char *path, const char *subpath); +int path_is_dir(const char *path, const char *subpath); +int path_is_file(const char *path, const char *subpath); +void recursive_config_double_dir_load( + const char *user_path + , const char *stock_path + , const char *subpath + , int (*callback)(const char *filename, void *data) + , void *data + , size_t depth +); +char *read_by_filename(char *filename, long *file_size); +char *find_and_replace(const char *src, const char *find, const char *replace, const char *where); + +/* fix for alpine linux */ +#ifndef RUSAGE_THREAD +#ifdef RUSAGE_CHILDREN +#define RUSAGE_THREAD RUSAGE_CHILDREN +#endif +#endif + +#define BITS_IN_A_KILOBIT 1000 +#define KILOBITS_IN_A_MEGABIT 1000 + +/* misc. */ + +#define UNUSED(x) (void)(x) + +#ifdef __GNUC__ +#define UNUSED_FUNCTION(x) __attribute__((unused)) UNUSED_##x +#else +#define UNUSED_FUNCTION(x) UNUSED_##x +#endif + +#define error_report(x, args...) do { errno = 0; error(x, ##args); } while(0) + +// Taken from linux kernel +#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) + +typedef struct bitmap256 { + uint64_t data[4]; +} BITMAP256; + +bool bitmap256_get_bit(BITMAP256 *ptr, uint8_t idx); +void bitmap256_set_bit(BITMAP256 *ptr, uint8_t idx, bool value); + +#define COMPRESSION_MAX_MSG_SIZE 0x4000 +#define PLUGINSD_LINE_MAX (COMPRESSION_MAX_MSG_SIZE - 1024) +int config_isspace(char c); +int pluginsd_space(char c); + +size_t quoted_strings_splitter(char *str, char **words, size_t max_words, int (*custom_isspace)(char), char *recover_input, char **recover_location, int max_recover); +size_t pluginsd_split_words(char *str, char **words, size_t max_words, char *recover_string, char **recover_location, int max_recover); + +static inline char *get_word(char **words, size_t num_words, size_t index) { + if (index >= num_words) + return NULL; + + return words[index]; +} + +bool run_command_and_copy_output_to_stdout(const char *command, int max_line_length); + +void netdata_cleanup_and_exit(int ret) NORETURN; +void send_statistics(const char *action, const char *action_result, const char *action_data); +extern char *netdata_configured_host_prefix; +#include "libjudy/src/Judy.h" +#include "os.h" +#include "storage_number/storage_number.h" +#include "threads/threads.h" +#include "buffer/buffer.h" +#include "locks/locks.h" +#include "circular_buffer/circular_buffer.h" +#include "avl/avl.h" +#include "inlined.h" +#include "clocks/clocks.h" +#include "completion/completion.h" +#include "popen/popen.h" +#include "simple_pattern/simple_pattern.h" +#ifdef ENABLE_HTTPS +# include "socket/security.h" +#endif +#include "socket/socket.h" +#include "config/appconfig.h" +#include "log/log.h" +#include "procfile/procfile.h" +#include "string/string.h" +#include "dictionary/dictionary.h" +#if defined(HAVE_LIBBPF) && !defined(__cplusplus) +#include "ebpf/ebpf.h" +#endif +#include "eval/eval.h" +#include "statistical/statistical.h" +#include "adaptive_resortable_list/adaptive_resortable_list.h" +#include "url/url.h" +#include "json/json.h" +#include "health/health.h" +#include "string/utf8.h" +#include "arrayalloc/arrayalloc.h" +#include "onewayalloc/onewayalloc.h" +#include "worker_utilization/worker_utilization.h" + +// BEWARE: Outside of the C code this also exists in alarm-notify.sh +#define DEFAULT_CLOUD_BASE_URL "https://api.netdata.cloud" +#define DEFAULT_CLOUD_UI_URL "https://app.netdata.cloud" + +#define RRD_STORAGE_TIERS 5 + +static inline size_t struct_natural_alignment(size_t size) __attribute__((const)); + +#define STRUCT_NATURAL_ALIGNMENT (sizeof(uintptr_t) * 2) +static inline size_t struct_natural_alignment(size_t size) { + if(unlikely(size % STRUCT_NATURAL_ALIGNMENT)) + size = size + STRUCT_NATURAL_ALIGNMENT - (size % STRUCT_NATURAL_ALIGNMENT); + + return size; +} + +#ifdef NETDATA_TRACE_ALLOCATIONS +struct malloc_trace { + avl_t avl; + + const char *function; + const char *file; + size_t line; + + size_t malloc_calls; + size_t calloc_calls; + size_t realloc_calls; + size_t strdup_calls; + size_t free_calls; + + size_t mmap_calls; + size_t munmap_calls; + + size_t allocations; + size_t bytes; + + struct rrddim *rd_bytes; + struct rrddim *rd_allocations; + struct rrddim *rd_avg_alloc; + struct rrddim *rd_ops; +}; +#endif // NETDATA_TRACE_ALLOCATIONS + +# ifdef __cplusplus +} +# endif + +#endif // NETDATA_LIB_H |