318fe6941a
Summary: Useful in some places for object uniqueness across processes. Currently used for generating a host-wide identifier of Cache objects but expected to be used soon in some unique id generation code. `int64_t` is chosen for return type because POSIX uses signed integer type, usually `int`, for `pid_t` and Windows uses `DWORD`, which is `uint32_t`. Future work: avoid copy-pasted declarations in port_*.h, perhaps with port_common.h always included from port.h Pull Request resolved: https://github.com/facebook/rocksdb/pull/8693 Test Plan: manual for now Reviewed By: ajkr, anand1976 Differential Revision: D30492876 Pulled By: pdillinger fbshipit-source-id: 39fc2788623cc9f4787866bdb67a4d183dde7eef
This directory contains interfaces and implementations that isolate the rest of the package from platform details. Code in the rest of the package includes "port.h" from this directory. "port.h" in turn includes a platform specific "port_<platform>.h" file that provides the platform specific implementation. See port_posix.h for an example of what must be provided in a platform specific header file.