vrb_space_len(3) [debian man page]

vrb_space_len(3)					      VRB Programmer's Manual						  vrb_space_len(3)

NAME

       vrb_space_len - return the length of space

LIBRARY

       -lvrb

SYNOPSIS

       #include <vrb.h>

       size_t vrb_space_len(vrb_p vrb);

DESCRIPTION

       vrb_space_len returns the total length of space available in the given virtual ring buffer.  This is the maximum space the caller may store
       into the buffer from the pointer returned by vrb_space_ptr(3).

ARGUMENTS

       vrb_p vrb
       specifies the virtual ring buffer to obtain the length of available space in.  If a NULL or invalid pointer is given,  results  are  unpre-
       dictable and are likely to be disasterous.

RETURN VALUE

       size_t
       The length of available space in the virtual ring buffer is returned.

SEE ALSO

       vrb(3),	 vrb_capacity(3),   vrb_data_len(3),   vrb_data_ptr(3),  vrb_destroy(3),  vrb_get(3),  vrb_get_min(3),	vrb_give(3),  vrb_init(3),
       vrb_init_opt(3),  vrb_is_empty(3),  vrb_is_full(3),  vrb_is_not_empty(3),  vrb_is_not_full(3),  vrb_move(3),  vrb_new(3),   vrb_new_opt(3),
       vrb_put(3),  vrb_put_all(3),  vrb_read(3),  vrb_read_min(3),  vrb_resize(3),  vrb_space_ptr(3),	vrb_take(3),  vrb_uninit(3), vrb_write(3),
       vrb_write_min(3)

vrb								    2002-09-30							  vrb_space_len(3)

vrb_write_min(3)					      VRB Programmer's Manual						  vrb_write_min(3)

NAME

       vrb_write_min - write data from a VRB

LIBRARY

       -lvrb

SYNOPSIS

       #include <vrb.h>

       size_t vrb_write_min(vrb_p vrb, int fd, size_t maxsize, size_t minsize);

DESCRIPTION

       vrb_write_min  writes  a  minimum  amount of data to a specified open file descriptor using write(2) from the specified virtual ring buffer
       until the specified maximum length has been written, the buffer is full, or an error is returned (including EAGAIN  or  EWOULDBLOCK  for  a
       non-blocking descriptor).  If there is insufficient data in the buffer to write the minimum amount, then write(2) will not be called.

ARGUMENTS

       vrb_p vrb
       specifies which virtual ring buffer.

       int fd
       specifies the open file descriptor to write to

       size_t maxsize
       specifies the maximum length to write, or ~0 for unlimited.

       size_t minsize
       specifies the minimum length to write.

RETURN VALUE

       size_t
       If  successful, the actual length of data written from the buffer is returned.  If the minimum amount of data was not available to be writ-
       ten, 0 is returned.  If an error occurs from write(2), the return value is ~0 and errno is set by write(2).

ERRORS

       If an error is returned, then errno will have one of the following values:

       0      An end-of-file has occurred.  Note that this is a different way of returning an end-of-file condition than write(2) uses.

       EINVAL An invalid virtual ring buffer pointer was specified.

SEE ALSO

       vrb(3),	vrb_capacity(3),  vrb_data_len(3),  vrb_data_ptr(3),  vrb_destroy(3),  vrb_get(3),   vrb_get_min(3),   vrb_give(3),   vrb_init(3),
       vrb_init_opt(3),   vrb_is_empty(3),  vrb_is_full(3),  vrb_is_not_empty(3),  vrb_is_not_full(3),	vrb_move(3),  vrb_new(3),  vrb_new_opt(3),
       vrb_put(3), vrb_put_all(3), vrb_read(3), vrb_read_min(3), vrb_resize(3), vrb_space_len(3),  vrb_space_ptr(3),  vrb_take(3),  vrb_uninit(3),
       vrb_write(3), write(2)

vrb								    2002-09-30							  vrb_write_min(3)