diff options
| author | Ethan Steinberg <ethan.steinberg@gmail.com> | 2020-05-26 21:42:18 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-05-26 21:42:18 (GMT) |
| commit | 21fda91f8da96406e6a912f7c312424209c19bef (patch) | |
| tree | 5b2caa6d631e4dfbbdfbf5fda85d67803e3df674 | |
| parent | b45af1a5691e83b86321fc52d173f66cf891ce5f (diff) | |
| download | cpython-21fda91f8da96406e6a912f7c312424209c19bef.zip cpython-21fda91f8da96406e6a912f7c312424209c19bef.tar.gz cpython-21fda91f8da96406e6a912f7c312424209c19bef.tar.bz2 | |
bpo-40611: Adds MAP_POPULATE to the mmap module (GH-20061)
MAP_POPULATE constant has now been added to the list of exported
mmap module flags.
| -rw-r--r-- | Doc/library/mmap.rst | 22 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Library/2020-05-13-16-28-33.bpo-40611.ZCk0_c.rst | 1 | ||||
| -rw-r--r-- | Modules/mmapmodule.c | 3 |
3 files changed, 25 insertions, 1 deletions
diff --git a/Doc/library/mmap.rst b/Doc/library/mmap.rst index 1f3fbc3..698c176 100644 --- a/Doc/library/mmap.rst +++ b/Doc/library/mmap.rst @@ -81,7 +81,9 @@ To map anonymous memory, -1 should be passed as the fileno along with the length private copy-on-write mapping, so changes to the contents of the mmap object will be private to this process, and :const:`MAP_SHARED` creates a mapping that's shared with all other processes mapping the same areas of - the file. The default value is :const:`MAP_SHARED`. + the file. The default value is :const:`MAP_SHARED`. Some systems have + additional possible flags with the full list specified in + :ref:`MAP_* constants <map-constants>`. *prot*, if specified, gives the desired memory protection; the two most useful values are :const:`PROT_READ` and :const:`PROT_WRITE`, to specify @@ -342,3 +344,21 @@ MADV_* Constants Availability: Systems with the madvise() system call. .. versionadded:: 3.8 + +.. _map-constants: + +MAP_* Constants ++++++++++++++++ + +.. data:: MAP_SHARED + MAP_PRIVATE + MAP_DENYWRITE + MAP_EXECUTABLE + MAP_ANON + MAP_ANONYMOUS + MAP_POPULATE + + These are the various flags that can be passed to :meth:`mmap.mmap`. Note that some options might not be present on some systems. + + .. versionchanged:: 3.10 + Added MAP_POPULATE constant. diff --git a/Misc/NEWS.d/next/Library/2020-05-13-16-28-33.bpo-40611.ZCk0_c.rst b/Misc/NEWS.d/next/Library/2020-05-13-16-28-33.bpo-40611.ZCk0_c.rst new file mode 100644 index 0000000..50ef3ad --- /dev/null +++ b/Misc/NEWS.d/next/Library/2020-05-13-16-28-33.bpo-40611.ZCk0_c.rst @@ -0,0 +1 @@ +:data:`~mmap.MAP_POPULATE` constant has now been added to the list of exported :mod:`mmap` module flags. diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c index a3e22d0..8a60db1 100644 --- a/Modules/mmapmodule.c +++ b/Modules/mmapmodule.c @@ -1574,6 +1574,9 @@ PyInit_mmap(void) setint(dict, "MAP_ANON", MAP_ANONYMOUS); setint(dict, "MAP_ANONYMOUS", MAP_ANONYMOUS); #endif +#ifdef MAP_POPULATE + setint(dict, "MAP_POPULATE", MAP_POPULATE); +#endif setint(dict, "PAGESIZE", (long)my_getpagesize()); |