NAME

       statgrab, libstatgrab - get system statistics

SYNOPSIS

       #include <statgrab.h>

       sg_error sg_init (int ignore_init_errors);

       sg_error sg_shutdown (void);

       sg_error sg_drop_privileges (void);

       sg_error sg_get_error (void);

       const char *sg_get_error_arg (void);

       int sg_get_error_errno (void);

       const char *sg_str_error (sg_error code);

       sg_error sg_get_error_details (sg_error_details *err_details);

       char *sg_strperror (char **buf, const sg_error_details * const err_details);

       size_t sg_get_nelements (const void *data);

       sg_error sg_free_stats_buf (void *data);

       sg_error sg_lock_mutex (const char *mutex_name);

       sg_error sg_unlock_mutex (const char *mutex_name);

       sg_cpu_percents *sg_get_cpu_percents (void);

       sg_cpu_percents *sg_get_cpu_percents_of (sg_cpu_percent_source cps);

       sg_cpu_percents *sg_get_cpu_percents_r (const sg_cpu_stats *whereof);

       void sg_free_cpu_percents (sg_cpu_percents *data);

       sg_cpu_stats *sg_get_cpu_stats (void);

       sg_cpu_stats *sg_get_cpu_stats_diff (void);

       sg_cpu_stats *sg_get_cpu_stats_r (void);

       sg_cpu_stats *sg_get_cpu_stats_diff_between (const sg_cpu_stats *cpu_now, const
                                                   sg_cpu_stats *cpu_last);

       sg_error sg_free_cpu_stats (sg_cpu_stats *data);

       sg_disk_io_stats *sg_get_disk_io_stats (size_t *entries);

       sg_disk_io_stats *sg_get_disk_io_stats_r (size_t *entries);

       sg_disk_io_stats *sg_get_disk_io_stats_diff (size_t *entries);

       sg_disk_io_stats *sg_get_disk_io_stats_diff_between (const sg_disk_io_stats *cur, const
                          sg_disk_io_stats *last, size_t *entries);

       sg_error sg_free_disk_io_stats (sg_disk_io_stats *data);

       sg_fs_stats *sg_get_fs_stats (size_t *entries);

       sg_fs_stats *sg_get_fs_stats_r (size_t *entries);

       sg_error sg_free_fs_stats (sg_fs_stats *data);

       const char **sg_get_valid_filesystems (size_t *entries);

       sg_error sg_set_valid_filesystems (const char *valid_fs[]);

       sg_host_info *sg_get_host_info (void);

       sg_host_info *sg_get_host_info_r (void);

       sg_error sg_free_host_info (sg_host_info *data);

       sg_load_stats *sg_get_load_stats (void);

       sg_load_stats *sg_get_load_stats (void);

       sg_error sg_free_load_stats (sg_load_stats *data);

       sg_mem_stats *sg_get_mem_stats (void);

       sg_mem_stats *sg_get_mem_stats_r (void);

       sg_error sg_free_mem_stats (sg_mem_stats *data);

       sg_swap_stats *sg_get_swap_stats (void);

       sg_swap_stats *sg_get_swap_stats_r (void);

       sg_error sg_free_swap_stats (sg_swap_stats *data);

       sg_network_iface_stats *sg_get_network_iface_stats (size_t *entries);

       sg_network_iface_stats *sg_get_network_iface_stats_r (size_t *entries);

       sg_error sg_free_network_iface_stats (sg_network_iface_stats *data);

       sg_network_io_stats *sg_get_network_io_stats (size_t *entries);

       sg_network_io_stats *sg_get_network_io_stats_r (size_t *entries);

       sg_network_io_stats *sg_get_network_io_stats_diff (size_t *entries);

       sg_network_io_stats *sg_get_network_io_stats_diff_between (const sg_network_io_stats *cur,
                          const sg_network_io_stats *last, size_t *entries);

       sg_error sg_free_network_io_stats (sg_network_iface_stats *data);

       sg_page_stats *sg_get_page_stats (void);

       sg_page_stats *sg_get_page_stats_r (void);

       sg_page_stats *sg_get_page_stats_diff (void);

       sg_page_stats *sg_get_page_stats_diff_between (const sg_page_stats *cur, const
                                                     sg_page_stats *last);

       sg_error sg_free_page_stats (sg_page_stats *data);

       sg_process_stats *sg_get_process_stats (size_t *entries);

       sg_process_stats *sg_get_process_stats_r (size_t *entries);

       sg_error sg_free_process_stats (sg_process_stats *data);

       sg_process_count *sg_get_process_count (void);

       sg_process_count *sg_get_process_count_of (sg_process_count_source pcs);

       sg_process_count *sg_get_process_count_r (sg_process_stats const *whereof);

       sg_error sg_free_process_count (sg_process_count *data);

       sg_user_stats *sg_get_user_stats (size_t *entries);

       sg_user_stats *sg_get_user_stats_r (size_t *entries);

       sg_error sg_free_user_stats (sg_user_stats *data);

DESCRIPTION

       The statgrab library provides a cross-platform interface to get several system statistics.
       System statistics aren't standardised, so the statgrab library tries to  choose  the  most
       important values over all supported operating systems. This implies that some values might
       not be available on every OS while some specific values are  missing  when  there  are  no
       counterparts on any other OS.

       The libstatgrab is organised in components, each for interrelated statistics.

       ┌──────────┬───────────────────────────────┐
       │component │ statistics                    │
       ├──────────┼───────────────────────────────┤
       │cpu       │ sg_cpu_stats, sg_cpu_percents │
       ├──────────┼───────────────────────────────┤
       │disk      │ sg_disk_io_stats, sg_fs_stats │
       ├──────────┼───────────────────────────────┤
       │load      │ sg_load_stats                 │
       ├──────────┼───────────────────────────────┤
       │mem       │ sg_mem_stats                  │
       ├──────────┼───────────────────────────────┤
       │network   │ sg_network_io_stats,          │
       │          │ sg_network_iface_stats        │
       ├──────────┼───────────────────────────────┤
       │os        │ sg_host_info                  │
       ├──────────┼───────────────────────────────┤
       │page      │ sg_page_stats                 │
       ├──────────┼───────────────────────────────┤
       │process   │ sg_process_stats,             │
       │          │ sg_process_count              │
       ├──────────┼───────────────────────────────┤
       │swap      │ sg_swap_stats                 │
       ├──────────┼───────────────────────────────┤
       │user      │ sg_user_stats                 │
       └──────────┴───────────────────────────────┘
       The  library was originally written to support the i-scream central monitoring system, but
       has since become a standalone package. It has  been  ported  to  work  on  Linux,  NetBSD,
       FreeBSD, OpenBSD, DragonFly BSD, Solaris, HP-UX, AIX and Cygwin.

SEE ALSO

       sg_intro(3)       sg_get_cpu_stats(3)      sg_get_disk_io_stats(3)      sg_get_fs_stats(3)
       sg_get_host_info(3)  sg_get_load_stats(3)  sg_get_mem_stats(3)  sg_get_network_io_stats(3)
       sg_get_network_iface_stats(3)         sg_get_page_stats(3)         sg_get_process_stats(3)
       sg_get_swap_stats(3) sg_get_user_stats(3) sg_get_error(3) sg_internal-intro(3)

WEBSITE

       ⟨https://libstatgrab.org/⟩