PMEM2_CONFIG_SET_SHARING(3)

NAME

pmem2_config_set_sharing() - set sharing in the pmem2_config structure

SYNOPSIS

    #include <libpmem2.h>
    struct pmem2_config;
    enum pmem2_sharing_type {
        PMEM2_SHARED,
        PMEM2_PRIVATE,
    };
    int pmem2_config_set_sharing(struct pmem2_config *config, enum pmem2_sharing_type sharing);

DESCRIPTION

The pmem2_config_set_sharing() function configures the behavior and visibility of writes to the mapping's pages. The possible values are listed below:

•   PMEM2_SHARED - Writes are made directly to the underlying memory, making them visible to other mappings of the same memory region. (default)

•   PMEM2_PRIVATE - Writes do not affect the underlying memory and are not visible to other mappings of the same memory region.

RETURN VALUE

The pmem2_config_set_sharing() function returns 0 on success or a negative error code on failure.

ERRORRS

The pmem2_config_set_sharing() can fail with the following errors:

•   PMEM2_E_INVALID_SHARING_VALUE - sharing value is invalid.

SEE ALSO

libpmem2(7), pmem2_config_new(3), pmem2_map_new(3), sysconf(3) and <https://pmem.io>