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            uv_timeval_t ru_stime; /* system CPU time used */
            uint64_t ru_maxrss; /* maximum resident set size */
            uint64_t ru_ixrss; /* integral shared memory size (X) */
            uint64_t ru_idrss; /* integral unshared data size (X) */
            uint64_t ru_isrss; /* integral unshared stack size (X) */
            uint64_t ru_minflt; /* page reclaims (soft page faults) (X) */
            uint64_t ru_majflt; /* page faults (hard page faults) */
            uint64_t ru_nswap; /* swaps (X) */
            uint64_t ru_inblock; /* block input operations */
            uint64_t ru_oublock; /* block output operations */
            uint64_t ru_msgsnd; /* IPC messages sent (X) */
            uint64_t ru_msgrcv; /* IPC messages received (X) */
            uint64_t ru_nsignals; /* signals received (X) */
            uint64_t ru_nvcsw; /* voluntary context switches (X) */
            uint64_t ru_nivcsw; /* involuntary context switches (X) */
        } uv_rusage_t;

    Members marked with `(X)` are unsupported on Windows.
    See :man:`getrusage(2)` for supported fields on Unix

.. c:type:: uv_cpu_info_t

    Data type for CPU information.

    ::

        typedef struct uv_cpu_info_s {
            char* model;
            int speed;
            struct uv_cpu_times_s {
                uint64_t user;
                uint64_t nice;
                uint64_t sys;
                uint64_t idle;
                uint64_t irq;
            } cpu_times;
        } uv_cpu_info_t;

.. c:type:: uv_interface_address_t

    Data type for interface addresses.

    ::

        typedef struct uv_interface_address_s {
            char* name;
            char phys_addr[6];
            int is_internal;
            union {
                struct sockaddr_in address4;
                struct sockaddr_in6 address6;
            } address;
            union {
                struct sockaddr_in netmask4;
                struct sockaddr_in6 netmask6;
            } netmask;
        } uv_interface_address_t;

.. c:type:: uv_passwd_t

    Data type for password file information.

    ::

        typedef struct uv_passwd_s {
            char* username;
            long uid;
            long gid;
            char* shell;
            char* homedir;
        } uv_passwd_t;

.. c:type:: uv_utsname_t

    Data type for operating system name and version information.

    ::

        typedef struct uv_utsname_s {
            char sysname[256];
            char release[256];
            char version[256];
            char machine[256];
        } uv_utsname_t;


API
---

.. c:function:: uv_handle_type uv_guess_handle(uv_file file)

    Used to detect what type of stream should be used with a given file
    descriptor. Usually this will be used during initialization to guess the
    type of the stdio streams.

    For :man:`isatty(3)` equivalent functionality use this function and test
    for ``UV_TTY``.

.. c:function:: int uv_replace_allocator(uv_malloc_func malloc_func, uv_realloc_func realloc_func, uv_calloc_func calloc_func, uv_free_func free_func)

    .. versionadded:: 1.6.0

    Override the use of the standard library's :man:`malloc(3)`,
    :man:`calloc(3)`, :man:`realloc(3)`, :man:`free(3)`, memory allocation
    functions.

    This function must be called before any other libuv function is called or
    after all resources have been freed and thus libuv doesn't reference
    any allocated memory chunk.

    On success, it returns 0, if any of the function pointers is NULL it
    returns UV_EINVAL.

    .. warning:: There is no protection against changing the allocator multiple
                 times. If the user changes it they are responsible for making
                 sure the allocator is changed while no memory was allocated with
                 the previous allocator, or that they are compatible.

.. c:function:: uv_buf_t uv_buf_init(char* base, unsigned int len)

    Constructor for :c:type:`uv_buf_t`.

libuv/docs/src/misc.rst  view on Meta::CPAN

    Gets the executable path.

.. c:function:: int uv_cwd(char* buffer, size_t* size)

    Gets the current working directory, and stores it in `buffer`. If the
    current working directory is too large to fit in `buffer`, this function
    returns `UV_ENOBUFS`, and sets `size` to the required length, including the
    null terminator.

    .. versionchanged:: 1.1.0

        On Unix the path no longer ends in a slash.

    .. versionchanged:: 1.9.0 the returned length includes the terminating null
                        byte on `UV_ENOBUFS`, and the buffer is null terminated
                        on success.


.. c:function:: int uv_chdir(const char* dir)

    Changes the current working directory.

.. c:function:: int uv_os_homedir(char* buffer, size_t* size)

    Gets the current user's home directory. On Windows, `uv_os_homedir()` first
    checks the `USERPROFILE` environment variable using
    `GetEnvironmentVariableW()`. If `USERPROFILE` is not set,
    `GetUserProfileDirectoryW()` is called. On all other operating systems,
    `uv_os_homedir()` first checks the `HOME` environment variable using
    :man:`getenv(3)`. If `HOME` is not set, :man:`getpwuid_r(3)` is called. The
    user's home directory is stored in `buffer`. When `uv_os_homedir()` is
    called, `size` indicates the maximum size of `buffer`. On success `size` is set
    to the string length of `buffer`. On `UV_ENOBUFS` failure `size` is set to the
    required length for `buffer`, including the null byte.

    .. warning::
        `uv_os_homedir()` is not thread safe.

    .. versionadded:: 1.6.0

.. c:function:: int uv_os_tmpdir(char* buffer, size_t* size)

    Gets the temp directory. On Windows, `uv_os_tmpdir()` uses `GetTempPathW()`.
    On all other operating systems, `uv_os_tmpdir()` uses the first environment
    variable found in the ordered list `TMPDIR`, `TMP`, `TEMP`, and `TEMPDIR`.
    If none of these are found, the path `"/tmp"` is used, or, on Android,
    `"/data/local/tmp"` is used. The temp directory is stored in `buffer`. When
    `uv_os_tmpdir()` is called, `size` indicates the maximum size of `buffer`.
    On success `size` is set to the string length of `buffer` (which does not
    include the terminating null). On `UV_ENOBUFS` failure `size` is set to the
    required length for `buffer`, including the null byte.

    .. warning::
        `uv_os_tmpdir()` is not thread safe.

    .. versionadded:: 1.9.0

.. c:function:: int uv_os_get_passwd(uv_passwd_t* pwd)

    Gets a subset of the password file entry for the current effective uid (not
    the real uid). The populated data includes the username, euid, gid, shell,
    and home directory. On non-Windows systems, all data comes from
    :man:`getpwuid_r(3)`. On Windows, uid and gid are set to -1 and have no
    meaning, and shell is `NULL`. After successfully calling this function, the
    memory allocated to `pwd` needs to be freed with
    :c:func:`uv_os_free_passwd`.

    .. versionadded:: 1.9.0

.. c:function:: void uv_os_free_passwd(uv_passwd_t* pwd)

    Frees the `pwd` memory previously allocated with :c:func:`uv_os_get_passwd`.

    .. versionadded:: 1.9.0

.. c:function:: uint64_t uv_get_free_memory(void)

    Gets memory information (in bytes).

.. c:function:: uint64_t uv_get_total_memory(void)

    Gets memory information (in bytes).

.. c:function:: uint64_t uv_hrtime(void)

    Returns the current high-resolution real time. This is expressed in
    nanoseconds. It is relative to an arbitrary time in the past. It is not
    related to the time of day and therefore not subject to clock drift. The
    primary use is for measuring performance between intervals.

    .. note::
        Not every platform can support nanosecond resolution; however, this value will always
        be in nanoseconds.

.. c:function:: void uv_print_all_handles(uv_loop_t* loop, FILE* stream)

    Prints all handles associated with the given `loop` to the given `stream`.

    Example:

    ::

        uv_print_all_handles(uv_default_loop(), stderr);
        /*
        [--I] signal   0x1a25ea8
        [-AI] async    0x1a25cf0
        [R--] idle     0x1a7a8c8
        */

    The format is `[flags] handle-type handle-address`. For `flags`:

    - `R` is printed for a handle that is referenced
    - `A` is printed for a handle that is active
    - `I` is printed for a handle that is internal

    .. warning::
        This function is meant for ad hoc debugging, there is no API/ABI
        stability guarantees.

    .. versionadded:: 1.8.0