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2019-02-28erts: Stop using madvise(2) on SolarisJohn Högberg
inet_drv adds some arcane #defines to get SCTP working, which may end up disabling madvise(2) locally in that file, breaking the build in the process. This commit disables madvise(2) altogether on Solaris as it's far simpler than undoing the define dance in erl_mmap.h.
2018-12-07Mark free blocks in pooled carriers as unused (MADV_FREE)John Högberg
This lets the OS reclaim the physical memory associated with these blocks which reduces the impact of long-lived awkward allocations. A small allocated block will still keep a huge carrier alive, but the unused part of the carrier will now be available to the OS. Co-authored-by: Dmytro Lytovchenko <[email protected]>
2018-06-18Update copyright yearHenrik Nord
2018-03-05erts: Remove unused "executable" feature from ErtsMemMapperSverker Eriksson
No longer need for super carrier allocating executable memory.
2018-03-05erts: Remove hipe amd64 code super carrier (exec_mmap)Sverker Eriksson
2016-11-22Merge branch 'maint'Sverker Eriksson
2016-11-17erts: Refactor crash dumping with cbprintfSverker Eriksson
Instead of passing around a file descriptor use a function pointer to facilitate more advanced backend write logic such as size limitation or compression.
2016-10-21erts: Use mprotect for hipe on all arch except x86_64Sverker Eriksson
Only x86_64 needs to reserve low virtual memory for its amd64 small code model.
2016-10-14erts: Enable exec_alloc for all hipe architecturesSverker Eriksson
For non-amd64 it's a "normal" allocator with a wrapper around mseg_alloc to call mprotect(PROT_EXEC).
2016-06-10Disregard MAP_NORESERVE for FreeBSDKenji Rikitake
A fix for running 19.0-rc2 on FreeBSD with HiPE enabled. * erl_mmap.h: disregard MAP_NORESERVE for FreeBSD MAP_NORESERVE is undefined in FreeBSD 10.x and later. This is to enable 64bit HiPE experimentally on FreeBSD. Note that on FreeBSD MAP_NORESERVE was "never implemented" even before 11.x (and the flag does not exist in /usr/src/sys/vm/mmap.c of 10.3-STABLE r301478 either), and HiPE was working on OTP 18.3.3, so mandating MAP_NORESERVE on FreeBSD might not be needed. See the following message on how MAP_NORESERVE was treated on FreeBSD: <http://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-20150202/122958.html> * erl_mmap.c: disable MAP_NORESERVE for FreeBSD * See also <https://github.com/erlang/otp/pull/925/commits/b02ce940c8738785ad018c9f758ca0d05d256bbb>
2016-05-04erts: Add macro HAVE_ERTS_MMAPSverker Eriksson
and make erts_mmap unavailable at compile time if not supported.
2016-05-04erts: Refactor erl_mmap.hSverker Eriksson
by (only) moving around stuff in the file. in order to make it easier to ifdef away all erts_mmap_* if not supported.
2016-04-20Merge branch 'sverker/hipe-code-alloc'Sverker Eriksson
2016-04-15erts: Add 'exec_alloc' for hipe codeSverker Eriksson
that uses its own super carrier (erts_exec_mmapper) to guarantee low addressed and executable memory (PROT_EXEC). Currently only used on x86_64 that needs low memory for HiPE/AMD64's small code model. By initializing erts_exec_mapper early we secure its low memory area before erts_literal_mmapper might steal it.
2016-04-15erts: Make ErtsMemMapper able to map memory with PROT_EXECSverker Eriksson
to prepare for hipe native code allocation.
2016-04-15erts: Tweak defaults for literal allocatorSverker Eriksson
Reduce main carrier size and number of free descriptors.
2016-03-15update copyright-yearHenrik Nord
2016-02-23erts: Make literal_alloc documented and configurableSverker Eriksson
Except it cannot be disabled and cannot be multi-threaded. The bit-vector 'erts_literal_vspace_map' on 32-bit is currently only protected by the literal allocator mutex. We could allow multiple instances on 64-bit (I think), but what would be the point?
2015-11-12erts: Add support for fast erts_is_literal()Sverker Eriksson
2015-11-12erts: Refactor erl_mmap to allow several mapper instancesSverker Eriksson
2015-09-11erts: Remove unused erts_have_erts_mmapSverker Eriksson
2015-06-18Change license text to APLv2Bruce Yinhe
2013-11-05Replace the +MMscmgc switch with +MMscrfsdRickard Green
Replaced the +MMscmgc switch with the +MMscrfsd switch. The old switch didn't reflect what it controlled.
2013-09-30erts: Add erts_mmap statsSverker Eriksson
As part of erlang:system_info({allocator,mseg_alloc}) and erl_crash.dump
2013-09-30erts: Add HARD_DBG_MSEGSverker Eriksson
2013-09-30erts: Allow page aligned erts_munmap()Rickard Green
2013-09-30erts: Add mmap argument to erts_debug:get_internal_stateSverker Eriksson
2013-09-30erts: erts_mmap supercarrier management and erts_mseg usageRickard Green
* Coalescing and trimming of free segments in supercarrier * Management of super aligned and super unaligned areas in supercarrier * Management of reservation of physical memory * erts_mseg usage of erts_mmap
2013-09-30erts: Prepare erl_mmap with tree structures for free seg storageSverker Eriksson