pmem2_source_get_handle3

Usage

Overview

The pmem2_source_get_handle() function reads the file handler of *struct pmem2_source** object describing the data source and returns it by h parameter.

This function is Windows only, on Linux use pmem2_source_get_fd(3). If the source was created using pmem2_source_from_fd(3) then pmem2_source_get_handle() is also valid function to read handler, because file descriptor is converted to file handle during source creation.

However, there are limitations to what you can do with a handle created from a file descriptor. For details refer to DESCRIPTION section in the pmem2_source_from_fd(3) manpage.

Errors

The pmem2_source_get_handle() can fail with the following errors:

•

PMEM2_E_FILE_HANDLE_NOT_SET - in case of an instance of struct pmem2_source that does not come from source type that support file handles, eg. anonymous data source.

Return value

The pmem2_source_get_handle() returns a file handle of data source.