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vrb_get_min
Langue: en
Version: 2002-09-30 (debian - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
vrb_get_min - get minimum data from a VRBLIBRARY
-lvrbSYNOPSIS
#include <vrb.h>size_t vrb_get_min(vrb_p vrb, char *target, size_t minsize, size_t maxsize);
DESCRIPTION
vrb_get_min Get data from a virtual ring buffer and copy it to the space provider by the caller only if the minimum specified amount can be copied. If less data than the minimum is available, then no data is copied.ARGUMENTS
vrb_p vrbspecifies which virtual ring buffer.
char *target
specifies the location where to copy the data to.
size_t minsize
specifies the minimum length of data that must be available to be copied.
size_t maxsize
specifies the maximum length of data that can be obtained from the virtual ring buffer.
RETURN VALUE
size_tThe actual length of data copied is returned, which can be any value from the minimum size to the maximum size, or 0.
ERRORS
If an error is returned, then errno will have the following value:- EINVAL
- An invalid virtual ring buffer pointer was specified, or the minimum request exceeds the buffer capacity and thus can never be satisfied.
SEE ALSO
vrb(3), vrb_capacity(3), vrb_data_len(3), vrb_data_ptr(3), vrb_destroy(3), vrb_get(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), vrb_write_min(3)Contenus ©2006-2024 Benjamin Poulain
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