- Update to version 5.1.0:
* remove patches: 0001-ARM-Don-t-extend-bit-LG_VADDR-to-compute-high-addres.patch
and 0001-remove-CPU_SPINWAIT.patch.
New features:
* Implement transparent huge page support for internal metadata. (@interwq)
* Add opt.thp to allow enabling / disabling transparent huge pages for all mappings. (@interwq)
* Add maximum background thread count option. (@djwatson)
* Allow prof_active to control opt.lg_prof_interval and prof.gdump. (@interwq)
* Allow arena index lookup based on allocation addresses via mallctl. (@lionkov)
* Allow disabling initial-exec TLS model. (@davidtgoldblatt, @KenMacD)
* Add opt.lg_extent_max_active_fit to set the max ratio between the size of the active extent selected (to split off from) and the size of the requested allocation. (@interwq, @davidtgoldblatt)
* Add retain_grow_limit to set the max size when growing virtual address space. (@interwq)
* Add mallctl interfaces:
* arena.<i>.retain_grow_limit (@interwq)
* arenas.lookup (@lionkov)
* max_background_threads (@djwatson)
* opt.lg_extent_max_active_fit (@interwq)
* opt.max_background_threads (@djwatson)
* opt.metadata_thp (@interwq)
* opt.thp (@interwq)
* stats.metadata_thp (@interwq)
Portability improvements:
* Support GNU/kFreeBSD configuration. (@paravoid)
* Support m68k, nios2 and SH3 architectures. (@paravoid)
* Fall back to FD_CLOEXEC when O_CLOEXEC is unavailable. (@zonyitoo)
* Fix symbol listing for cross-compiling. (@tamird)
* Fix high bits computation on ARM. (@davidtgoldblatt, @paravoid)
* Disable the CPU_SPINWAIT macro for Power. (@davidtgoldblatt, @marxin)
* Fix MSVC 2015 & 2017 builds. (@rustyx)
* Improve RISC-V support. (@EdSchouten)
* Set name mangling script in strict mode. (@nicolov)
* Avoid MADV_HUGEPAGE on ARM. (@marxin)
* Modify configure to determine return value of strerror_r. (@davidtgoldblatt, @cferris1000)
* Make sure CXXFLAGS is tested with CPP compiler. (@nehaljwani)
* Fix 32-bit build on MSVC. (@rustyx)
* Fix external symbol on MSVC. (@maksqwe)
* Avoid a printf format specifier warning. (@jasone)
* Add configure option --disable-initial-exec-tls which can allow jemalloc to be dynamically loaded after program startup. (@davidtgoldblatt, @KenMacD)
* AArch64: Add ILP32 support. (@cmuellner)
* Add --with-lg-vaddr configure option to support cross compiling. (@cmuellner, @davidtgoldblatt)
Optimizations and refactors:
* Improve active extent fit with extent_max_active_fit. This considerably reduces fragmentation over time and improves virtual memory and metadata usage. (@davidtgoldblatt, @interwq)
* Eagerly coalesce large extents to reduce fragmentation. (@interwq)
* sdallocx: only read size info when page aligned (i.e. possibly sampled), which speeds up the sized deallocation path significantly. (@interwq)
* Avoid attempting new mappings for in place expansion with retain, since it rarely succeeds in practice and causes high overhead. (@interwq)
* Refactor OOM handling in newImpl. (@wqfish)
* Add internal fine-grained logging functionality for debugging use. (@davidtgoldblatt)
* Refactor arena / tcache interactions. (@davidtgoldblatt)
* Refactor extent management with dumpable flag. (@davidtgoldblatt)
* Add runtime detection of lazy purging. (@interwq)
* Use pairing heap instead of red-black tree for extents_avail. (@djwatson)
* Use sysctl on startup in FreeBSD. (@trasz)
* Use thread local prng state instead of atomic. (@djwatson)
* Make decay to always purge one more extent than before, because in practice large extents are usually the ones that cross the decay threshold. Purging the additional extent helps save memory as well as reduce VM fragmentation. (@interwq)
* Fast division by dynamic values. (@davidtgoldblatt)
* Improve the fit for aligned allocation. (@interwq, @edwinsmith)
* Refactor extent_t bitpacking. (@rkmisra)
* Optimize the generated assembly for ticker operations. (@davidtgoldblatt)
* Convert stats printing to use a structured text emitter. (@davidtgoldblatt)
* Remove preserve_lru feature for extents management. (@djwatson)
* Consolidate two memory loads into one on the fast deallocation path. (@davidtgoldblatt, @interwq)
Bug fixes (most of the issues are only relevant to jemalloc 5.0):
* Fix deadlock with multithreaded fork in OS X. (@davidtgoldblatt)
* Validate returned file descriptor before use. (@zonyitoo)
* Fix a few background thread initialization and shutdown issues. (@interwq)
* Fix an extent coalesce + decay race by taking both coalescing extents off the LRU list. (@interwq)
* Fix potentially unbound increase during decay, caused by one thread keep stashing memory to purge while other threads generating new pages. The number of pages to purge is checked to prevent this. (@interwq)
* Fix a FreeBSD bootstrap assertion. (@strejda, @interwq)
* Handle 32 bit mutex counters. (@rkmisra)
* Fix a indexing bug when creating background threads. (@davidtgoldblatt, @binliu19)
* Fix arguments passed to extent_init. (@yuleniwo, @interwq)
* Fix addresses used for ordering mutexes. (@rkmisra)
* Fix abort_conf processing during bootstrap. (@interwq)
* Fix include path order for out-of-tree builds. (@cmuellner)
Incompatible changes:
* Remove --disable-thp. (@interwq)
* Remove mallctl interfaces:
* config.thp (@interwq)
Documentation:
* Add TUNING.md. (@interwq, @davidtgoldblatt, @djwatson)
OBS-URL: https://build.opensuse.org/request/show/606134
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/jemalloc?expand=0&rev=25
* remove patches: 0001-ARM-Don-t-extend-bit-LG_VADDR-to-compute-high-addres.patch
and 0001-remove-CPU_SPINWAIT.patch.
New features:
* Implement transparent huge page support for internal metadata. (@interwq)
* Add opt.thp to allow enabling / disabling transparent huge pages for all mappings. (@interwq)
* Add maximum background thread count option. (@djwatson)
* Allow prof_active to control opt.lg_prof_interval and prof.gdump. (@interwq)
* Allow arena index lookup based on allocation addresses via mallctl. (@lionkov)
* Allow disabling initial-exec TLS model. (@davidtgoldblatt, @KenMacD)
* Add opt.lg_extent_max_active_fit to set the max ratio between the size of the active extent selected (to split off from) and the size of the requested allocation. (@interwq, @davidtgoldblatt)
* Add retain_grow_limit to set the max size when growing virtual address space. (@interwq)
* Add mallctl interfaces:
* arena.<i>.retain_grow_limit (@interwq)
* arenas.lookup (@lionkov)
* max_background_threads (@djwatson)
* opt.lg_extent_max_active_fit (@interwq)
* opt.max_background_threads (@djwatson)
* opt.metadata_thp (@interwq)
* opt.thp (@interwq)
* stats.metadata_thp (@interwq)
Portability improvements:
* Support GNU/kFreeBSD configuration. (@paravoid)
* Support m68k, nios2 and SH3 architectures. (@paravoid)
* Fall back to FD_CLOEXEC when O_CLOEXEC is unavailable. (@zonyitoo)
* Fix symbol listing for cross-compiling. (@tamird)
* Fix high bits computation on ARM. (@davidtgoldblatt, @paravoid)
* Disable the CPU_SPINWAIT macro for Power. (@davidtgoldblatt, @marxin)
* Fix MSVC 2015 & 2017 builds. (@rustyx)
* Improve RISC-V support. (@EdSchouten)
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=58
- Add 0001-ARM-Don-t-extend-bit-LG_VADDR-to-compute-high-addres.patch:
fixes#979.
- Add 0001-remove-CPU_SPINWAIT.patch:
revert 701daa5298b3befe2aff05ce590533165abb9ba4 in order to fix#761.
- Update to version 5.0.1
Bug fixes:
* Update decay->nunpurged before purging, in order to avoid potential
update races and subsequent incorrect purging volume.
([37]@interwq)
* Only abort on dlsym(3) error if the failure impacts an enabled
feature (lazy locking and/or background threads). This mitigates an
initialization failure bug for which we still do not have a clear
reproduction test case. ([38]@interwq)
* Modify tsd management so that it neither crashes nor leaks if a
thread's only allocation activity is to call free() after TLS
destructors have been executed. This behavior was observed when
operating with GNU libc, and is unlikely to be an issue with other
libc implementations. ([39]@interwq)
* Mask signals during background thread creation. This prevents
signals from being inadvertently delivered to background threads.
([40]@jasone, [41]@davidtgoldblatt, [42]@interwq)
* Avoid inactivity checks within background threads, in order to
prevent recursive mutex acquisition. ([43]@interwq)
* Fix extent_grow_retained() to use the specified hooks when the
arena.<i>.extent_hooks mallctl is used to override the default
hooks. ([44]@interwq)
* Add missing reentrancy support for custom extent hooks which
allocate. ([45]@interwq)
* Post-fork(2), re-initialize the list of tcaches associated with
each arena to contain no tcaches except the forking thread's.
([46]@interwq)
* Add missing post-fork(2) mutex reinitialization for
extent_grow_mtx. This fixes potential deadlocks after fork(2).
([47]@interwq)
* Enforce minimum autoconf version (currently 2.68), since 2.63 is
known to generate corrupt configure scripts. ([48]@jasone)
* Ensure that the configured page size (--with-lg-page) is no larger
than the configured huge page size (--with-lg-hugepage).
([49]@jasone)
New features:
* Implement optional per-CPU arena support; threads choose which
arena to use based on current CPU rather than on fixed
thread-->arena associations. ([59]@interwq)
* Implement two-phase decay of unused dirty pages. Pages transition
from dirty-->muzzy-->clean, where the first phase transition relies
on madvise(... MADV_FREE) semantics, and the second phase
transition discards pages such that they are replaced with
demand-zeroed pages on next access. ([60]@jasone)
* Increase decay time resolution from seconds to milliseconds.
([61]@jasone)
* Implement opt-in per CPU background threads, and use them for
asynchronous decay-driven unused dirty page purging. ([62]@interwq)
* Add mutex profiling, which collects a variety of statistics useful
for diagnosing overhead/contention issues. ([63]@interwq)
* Add C++ new/delete operator bindings. ([64]@djwatson)
* Support manually created arena destruction, such that all data and
metadata are discarded. Add MALLCTL_ARENAS_DESTROYED for accessing
merged stats associated with destroyed arenas. ([65]@jasone)
* Add MALLCTL_ARENAS_ALL as a fixed index for use in accessing
merged/destroyed arena statistics via mallctl. ([66]@jasone)
* Add opt.abort_conf to optionally abort if invalid configuration
options are detected during initialization. ([67]@interwq)
* Add opt.stats_print_opts, so that e.g. JSON output can be selected
for the stats dumped during exit if opt.stats_print is true.
([68]@jasone)
* Add --with-version=VERSION for use when embedding jemalloc into
another project's git repository. ([69]@jasone)
* Add --disable-thp to support cross compiling. ([70]@jasone)
* Add --with-lg-hugepage to support cross compiling. ([71]@jasone)
* Add mallctl interfaces (various authors):
+ background_thread
+ opt.abort_conf
+ opt.retain
+ opt.percpu_arena
+ opt.background_thread
+ opt.{dirty,muzzy}_decay_ms
+ opt.stats_print_opts
+ arena.<i>.initialized
+ arena.<i>.destroy
+ arena.<i>.{dirty,muzzy}_decay_ms
+ arena.<i>.extent_hooks
+ arenas.{dirty,muzzy}_decay_ms
+ arenas.bin.<i>.slab_size
+ arenas.nlextents
+ arenas.lextent.<i>.size
+ arenas.create
+ stats.background_thread.{num_threads,num_runs,run_interval}
+ stats.mutexes.{ctl,background_thread,prof,reset}.{num_ops,num_
spin_acq,num_wait,max_wait_time,total_wait_time,max_num_thds,n
um_owner_switch}
+ stats.arenas.<i>.{dirty,muzzy}_decay_ms
+ stats.arenas.<i>.uptime
+ stats.arenas.<i>.{pmuzzy,base,internal,resident}
+ stats.arenas.<i>.{dirty,muzzy}_{npurge,nmadvise,purged}
+ stats.arenas.<i>.bins.<j>.{nslabs,reslabs,curslabs}
+ stats.arenas.<i>.bins.<j>.mutex.{num_ops,num_spin_acq,num_wait
,max_wait_time,total_wait_time,max_num_thds,num_owner_switch}
+ stats.arenas.<i>.lextents.<j>.{nmalloc,ndalloc,nrequests,curle
xtents}
+ stats.arenas.i.mutexes.{large,extent_avail,extents_dirty,exten
ts_muzzy,extents_retained,decay_dirty,decay_muzzy,base,tcache_
list}.{num_ops,num_spin_acq,num_wait,max_wait_time,total_wait_
time,max_num_thds,num_owner_switch}
Portability improvements:
* Improve reentrant allocation support, such that deadlock is less
likely if e.g. a system library call in turn allocates memory.
([72]@davidtgoldblatt, [73]@interwq)
* Support static linking of jemalloc with glibc. ([74]@djwatson)
Optimizations and refactors:
* Organize virtual memory as "extents" of virtual memory pages,
rather than as naturally aligned "chunks", and store all metadata
in arbitrarily distant locations. This reduces virtual memory
external fragmentation, and will interact better with huge pages
(not yet explicitly supported). ([75]@jasone)
* Fold large and huge size classes together; only small and large
size classes remain. ([76]@jasone)
* Unify the allocation paths, and merge most fast-path branching
decisions. ([77]@davidtgoldblatt, [78]@interwq)
* Embed per thread automatic tcache into thread-specific data, which
reduces conditional branches and dereferences. Also reorganize
tcache to increase fast-path data locality. ([79]@interwq)
* Rewrite atomics to closely model the C11 API, convert various
synchronization from mutex-based to atomic, and use the explicit
memory ordering control to resolve various hypothetical races
without increasing synchronization overhead. ([80]@davidtgoldblatt)
* Extensively optimize rtree via various methods:
+ Add multiple layers of rtree lookup caching, since rtree
lookups are now part of fast-path deallocation. ([81]@interwq)
+ Determine rtree layout at compile time. ([82]@jasone)
+ Make the tree shallower for common configurations.
([83]@jasone)
+ Embed the root node in the top-level rtree data structure,
thus avoiding one level of indirection. ([84]@jasone)
+ Further specialize leaf elements as compared to internal node
elements, and directly embed extent metadata needed for
fast-path deallocation. ([85]@jasone)
+ Ignore leading always-zero address bits
(architecture-specific). ([86]@jasone)
* Reorganize headers (ongoing work) to make them hermetic, and
disentangle various module dependencies. ([87]@davidtgoldblatt)
* Convert various internal data structures such as size class
metadata from boot-time-initialized to compile-time-initialized.
Propagate resulting data structure simplifications, such as making
arena metadata fixed-size. ([88]@jasone)
* Simplify size class lookups when constrained to size classes that
are multiples of the page size. This speeds lookups, but the
primary benefit is complexity reduction in code that was the source
of numerous regressions. ([89]@jasone)
* Lock individual extents when possible for localized extent
operations, rather than relying on a top-level arena lock.
([90]@davidtgoldblatt, [91]@jasone)
* Use first fit layout policy instead of best fit, in order to
improve packing. ([92]@jasone)
* If munmap(2) is not in use, use an exponential series to grow each
arena's virtual memory, so that the number of disjoint virtual
memory mappings remains low. ([93]@jasone)
* Implement per arena base allocators, so that arenas never share any
virtual memory pages. ([94]@jasone)
* Automatically generate private symbol name mangling macros.
([95]@jasone)
Incompatible changes:
* Replace chunk hooks with an expanded/normalized set of extent
hooks. ([96]@jasone)
* Remove ratio-based purging. ([97]@jasone)
* Remove --disable-tcache. ([98]@jasone)
* Remove --disable-tls. ([99]@jasone)
* Remove --enable-ivsalloc. ([100]@jasone)
* Remove --with-lg-size-class-group. ([101]@jasone)
* Remove --with-lg-tiny-min. ([102]@jasone)
* Remove --disable-cc-silence. ([103]@jasone)
* Remove --enable-code-coverage. ([104]@jasone)
* Remove --disable-munmap (replaced by opt.retain). ([105]@jasone)
* Remove Valgrind support. ([106]@jasone)
* Remove quarantine support. ([107]@jasone)
* Remove redzone support. ([108]@jasone)
* Remove mallctl interfaces (various authors):
+ config.munmap
+ config.tcache
+ config.tls
+ config.valgrind
+ opt.lg_chunk
+ opt.purge
+ opt.lg_dirty_mult
+ opt.decay_time
+ opt.quarantine
+ opt.redzone
+ opt.thp
+ arena.<i>.lg_dirty_mult
+ arena.<i>.decay_time
+ arena.<i>.chunk_hooks
+ arenas.initialized
+ arenas.lg_dirty_mult
+ arenas.decay_time
+ arenas.bin.<i>.run_size
+ arenas.nlruns
+ arenas.lrun.<i>.size
+ arenas.nhchunks
+ arenas.hchunk.<i>.size
+ arenas.extend
+ stats.cactive
+ stats.arenas.<i>.lg_dirty_mult
+ stats.arenas.<i>.decay_time
+ stats.arenas.<i>.metadata.{mapped,allocated}
+ stats.arenas.<i>.{npurge,nmadvise,purged}
+ stats.arenas.<i>.huge.{allocated,nmalloc,ndalloc,nrequests}
+ stats.arenas.<i>.bins.<j>.{nruns,reruns,curruns}
+ stats.arenas.<i>.lruns.<j>.{nmalloc,ndalloc,nrequests,curruns}
+ stats.arenas.<i>.hchunks.<j>.{nmalloc,ndalloc,nrequests,curhch
unks}
Bug fixes:
* Improve interval-based profile dump triggering to dump only one
profile when a single allocation's size exceeds the interval.
([109]@jasone)
* Use prefixed function names (as controlled by
--with-jemalloc-prefix) when pruning backtrace frames in jeprof.
([110]@jasone)
OBS-URL: https://build.opensuse.org/request/show/531585
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/jemalloc?expand=0&rev=23
- Add 0001-ARM-Don-t-extend-bit-LG_VADDR-to-compute-high-addres.patch:
fixes#979.
- Revert 701daa5298b3befe2aff05ce590533165abb9ba4 in order to fix
#761.
- Update to version 5.0.1
Bug fixes:
* Update decay->nunpurged before purging, in order to avoid potential
update races and subsequent incorrect purging volume.
([37]@interwq)
* Only abort on dlsym(3) error if the failure impacts an enabled
feature (lazy locking and/or background threads). This mitigates an
initialization failure bug for which we still do not have a clear
reproduction test case. ([38]@interwq)
* Modify tsd management so that it neither crashes nor leaks if a
thread's only allocation activity is to call free() after TLS
destructors have been executed. This behavior was observed when
operating with GNU libc, and is unlikely to be an issue with other
libc implementations. ([39]@interwq)
* Mask signals during background thread creation. This prevents
signals from being inadvertently delivered to background threads.
([40]@jasone, [41]@davidtgoldblatt, [42]@interwq)
* Avoid inactivity checks within background threads, in order to
prevent recursive mutex acquisition. ([43]@interwq)
* Fix extent_grow_retained() to use the specified hooks when the
arena.<i>.extent_hooks mallctl is used to override the default
hooks. ([44]@interwq)
* Add missing reentrancy support for custom extent hooks which
allocate. ([45]@interwq)
* Post-fork(2), re-initialize the list of tcaches associated with
each arena to contain no tcaches except the forking thread's.
([46]@interwq)
* Add missing post-fork(2) mutex reinitialization for
extent_grow_mtx. This fixes potential deadlocks after fork(2).
([47]@interwq)
* Enforce minimum autoconf version (currently 2.68), since 2.63 is
known to generate corrupt configure scripts. ([48]@jasone)
* Ensure that the configured page size (--with-lg-page) is no larger
than the configured huge page size (--with-lg-hugepage).
([49]@jasone)
New features:
* Implement optional per-CPU arena support; threads choose which
arena to use based on current CPU rather than on fixed
thread-->arena associations. ([59]@interwq)
* Implement two-phase decay of unused dirty pages. Pages transition
from dirty-->muzzy-->clean, where the first phase transition relies
on madvise(... MADV_FREE) semantics, and the second phase
transition discards pages such that they are replaced with
demand-zeroed pages on next access. ([60]@jasone)
* Increase decay time resolution from seconds to milliseconds.
([61]@jasone)
* Implement opt-in per CPU background threads, and use them for
asynchronous decay-driven unused dirty page purging. ([62]@interwq)
* Add mutex profiling, which collects a variety of statistics useful
for diagnosing overhead/contention issues. ([63]@interwq)
* Add C++ new/delete operator bindings. ([64]@djwatson)
* Support manually created arena destruction, such that all data and
metadata are discarded. Add MALLCTL_ARENAS_DESTROYED for accessing
merged stats associated with destroyed arenas. ([65]@jasone)
* Add MALLCTL_ARENAS_ALL as a fixed index for use in accessing
merged/destroyed arena statistics via mallctl. ([66]@jasone)
* Add opt.abort_conf to optionally abort if invalid configuration
options are detected during initialization. ([67]@interwq)
* Add opt.stats_print_opts, so that e.g. JSON output can be selected
for the stats dumped during exit if opt.stats_print is true.
([68]@jasone)
* Add --with-version=VERSION for use when embedding jemalloc into
another project's git repository. ([69]@jasone)
* Add --disable-thp to support cross compiling. ([70]@jasone)
* Add --with-lg-hugepage to support cross compiling. ([71]@jasone)
* Add mallctl interfaces (various authors):
+ background_thread
+ opt.abort_conf
+ opt.retain
+ opt.percpu_arena
+ opt.background_thread
+ opt.{dirty,muzzy}_decay_ms
+ opt.stats_print_opts
+ arena.<i>.initialized
+ arena.<i>.destroy
+ arena.<i>.{dirty,muzzy}_decay_ms
+ arena.<i>.extent_hooks
+ arenas.{dirty,muzzy}_decay_ms
+ arenas.bin.<i>.slab_size
+ arenas.nlextents
+ arenas.lextent.<i>.size
+ arenas.create
+ stats.background_thread.{num_threads,num_runs,run_interval}
+ stats.mutexes.{ctl,background_thread,prof,reset}.{num_ops,num_
spin_acq,num_wait,max_wait_time,total_wait_time,max_num_thds,n
um_owner_switch}
+ stats.arenas.<i>.{dirty,muzzy}_decay_ms
+ stats.arenas.<i>.uptime
+ stats.arenas.<i>.{pmuzzy,base,internal,resident}
+ stats.arenas.<i>.{dirty,muzzy}_{npurge,nmadvise,purged}
+ stats.arenas.<i>.bins.<j>.{nslabs,reslabs,curslabs}
+ stats.arenas.<i>.bins.<j>.mutex.{num_ops,num_spin_acq,num_wait
,max_wait_time,total_wait_time,max_num_thds,num_owner_switch}
+ stats.arenas.<i>.lextents.<j>.{nmalloc,ndalloc,nrequests,curle
xtents}
+ stats.arenas.i.mutexes.{large,extent_avail,extents_dirty,exten
ts_muzzy,extents_retained,decay_dirty,decay_muzzy,base,tcache_
list}.{num_ops,num_spin_acq,num_wait,max_wait_time,total_wait_
time,max_num_thds,num_owner_switch}
Portability improvements:
* Improve reentrant allocation support, such that deadlock is less
likely if e.g. a system library call in turn allocates memory.
([72]@davidtgoldblatt, [73]@interwq)
* Support static linking of jemalloc with glibc. ([74]@djwatson)
Optimizations and refactors:
* Organize virtual memory as "extents" of virtual memory pages,
rather than as naturally aligned "chunks", and store all metadata
in arbitrarily distant locations. This reduces virtual memory
external fragmentation, and will interact better with huge pages
(not yet explicitly supported). ([75]@jasone)
* Fold large and huge size classes together; only small and large
size classes remain. ([76]@jasone)
* Unify the allocation paths, and merge most fast-path branching
decisions. ([77]@davidtgoldblatt, [78]@interwq)
* Embed per thread automatic tcache into thread-specific data, which
reduces conditional branches and dereferences. Also reorganize
tcache to increase fast-path data locality. ([79]@interwq)
* Rewrite atomics to closely model the C11 API, convert various
synchronization from mutex-based to atomic, and use the explicit
memory ordering control to resolve various hypothetical races
without increasing synchronization overhead. ([80]@davidtgoldblatt)
* Extensively optimize rtree via various methods:
+ Add multiple layers of rtree lookup caching, since rtree
lookups are now part of fast-path deallocation. ([81]@interwq)
+ Determine rtree layout at compile time. ([82]@jasone)
+ Make the tree shallower for common configurations.
([83]@jasone)
+ Embed the root node in the top-level rtree data structure,
thus avoiding one level of indirection. ([84]@jasone)
+ Further specialize leaf elements as compared to internal node
elements, and directly embed extent metadata needed for
fast-path deallocation. ([85]@jasone)
+ Ignore leading always-zero address bits
(architecture-specific). ([86]@jasone)
* Reorganize headers (ongoing work) to make them hermetic, and
disentangle various module dependencies. ([87]@davidtgoldblatt)
* Convert various internal data structures such as size class
metadata from boot-time-initialized to compile-time-initialized.
Propagate resulting data structure simplifications, such as making
arena metadata fixed-size. ([88]@jasone)
* Simplify size class lookups when constrained to size classes that
are multiples of the page size. This speeds lookups, but the
primary benefit is complexity reduction in code that was the source
of numerous regressions. ([89]@jasone)
* Lock individual extents when possible for localized extent
operations, rather than relying on a top-level arena lock.
([90]@davidtgoldblatt, [91]@jasone)
* Use first fit layout policy instead of best fit, in order to
improve packing. ([92]@jasone)
* If munmap(2) is not in use, use an exponential series to grow each
arena's virtual memory, so that the number of disjoint virtual
memory mappings remains low. ([93]@jasone)
* Implement per arena base allocators, so that arenas never share any
virtual memory pages. ([94]@jasone)
* Automatically generate private symbol name mangling macros.
([95]@jasone)
Incompatible changes:
* Replace chunk hooks with an expanded/normalized set of extent
hooks. ([96]@jasone)
* Remove ratio-based purging. ([97]@jasone)
* Remove --disable-tcache. ([98]@jasone)
* Remove --disable-tls. ([99]@jasone)
* Remove --enable-ivsalloc. ([100]@jasone)
* Remove --with-lg-size-class-group. ([101]@jasone)
* Remove --with-lg-tiny-min. ([102]@jasone)
* Remove --disable-cc-silence. ([103]@jasone)
* Remove --enable-code-coverage. ([104]@jasone)
* Remove --disable-munmap (replaced by opt.retain). ([105]@jasone)
* Remove Valgrind support. ([106]@jasone)
* Remove quarantine support. ([107]@jasone)
* Remove redzone support. ([108]@jasone)
* Remove mallctl interfaces (various authors):
+ config.munmap
+ config.tcache
+ config.tls
+ config.valgrind
+ opt.lg_chunk
+ opt.purge
+ opt.lg_dirty_mult
+ opt.decay_time
+ opt.quarantine
+ opt.redzone
+ opt.thp
+ arena.<i>.lg_dirty_mult
+ arena.<i>.decay_time
+ arena.<i>.chunk_hooks
+ arenas.initialized
+ arenas.lg_dirty_mult
+ arenas.decay_time
+ arenas.bin.<i>.run_size
+ arenas.nlruns
+ arenas.lrun.<i>.size
+ arenas.nhchunks
+ arenas.hchunk.<i>.size
+ arenas.extend
+ stats.cactive
+ stats.arenas.<i>.lg_dirty_mult
+ stats.arenas.<i>.decay_time
+ stats.arenas.<i>.metadata.{mapped,allocated}
+ stats.arenas.<i>.{npurge,nmadvise,purged}
+ stats.arenas.<i>.huge.{allocated,nmalloc,ndalloc,nrequests}
+ stats.arenas.<i>.bins.<j>.{nruns,reruns,curruns}
+ stats.arenas.<i>.lruns.<j>.{nmalloc,ndalloc,nrequests,curruns}
+ stats.arenas.<i>.hchunks.<j>.{nmalloc,ndalloc,nrequests,curhch
unks}
Bug fixes:
* Improve interval-based profile dump triggering to dump only one
profile when a single allocation's size exceeds the interval.
([109]@jasone)
* Use prefixed function names (as controlled by
--with-jemalloc-prefix) when pruning backtrace frames in jeprof.
([110]@jasone)
OBS-URL: https://build.opensuse.org/request/show/531565
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=53
- Update to version 4.5.0
New features:
* Add --disable-thp and the opt.thp mallctl to provide opt-out
mechanisms for transparent huge page integration.
* Restructure *CFLAGS configuration, so that CFLAGS behaves
typically, and EXTRA_CFLAGS provides a way to specify e.g.
-Werror during building, but not during configuration.
Bug fixes:
* Fix DSS (sbrk(2)-based) allocation. This regression was first
released in 4.3.0.
* Handle race in per size class utilization computation.
This functionality was first released in 4.0.0.
* Fix lock order reversal during gdump.
* Fix/refactor tcache synchronization. This regression was
first released in 4.0.0.
* Fix various JSON-formatted malloc_stats_print() bugs.
This functionality was first released in 4.3.0.
* Fix huge-aligned allocation. This regression was first
released in 4.4.0.
* When transparent huge page integration is enabled, detect
what state pages start in according to the kernel's current
operating mode, and only convert arena chunks to non-huge
during purging if that is not their initial state.
This functionality was first released in 4.4.0.
* Fix lg_chunk clamping for the --enable-cache-oblivious
--disable-fill case. This regression was first released
in 4.0.0.
OBS-URL: https://build.opensuse.org/request/show/478563
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/jemalloc?expand=0&rev=22
New features:
* Add --disable-thp and the opt.thp mallctl to provide opt-out
mechanisms for transparent huge page integration.
* Restructure *CFLAGS configuration, so that CFLAGS behaves
typically, and EXTRA_CFLAGS provides a way to specify e.g.
-Werror during building, but not during configuration.
Bug fixes:
* Fix DSS (sbrk(2)-based) allocation. This regression was first
released in 4.3.0.
* Handle race in per size class utilization computation.
This functionality was first released in 4.0.0.
* Fix lock order reversal during gdump.
* Fix/refactor tcache synchronization. This regression was
first released in 4.0.0.
* Fix various JSON-formatted malloc_stats_print() bugs.
This functionality was first released in 4.3.0.
* Fix huge-aligned allocation. This regression was first
released in 4.4.0.
* When transparent huge page integration is enabled, detect
what state pages start in according to the kernel's current
operating mode, and only convert arena chunks to non-huge
during purging if that is not their initial state.
This functionality was first released in 4.4.0.
* Fix lg_chunk clamping for the --enable-cache-oblivious
--disable-fill case. This regression was first released
in 4.0.0.
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=51
- Update to version 4.4.0
Optimizations:
* Add extent serial numbers and use them where appropriate as a
sort key that is higher priority than address, so that the
allocation policy prefers older extents. This tends to improve
locality (decrease fragmentation) when memory grows downward.
* Refactor madvise(2) configuration so that MADV_FREE is detected
and utilized on Linux 4.5 and newer.
* Mark partially purged arena chunks as non-huge-page.
This improves interaction with Linux's transparent huge page
functionality.
Bug fixes:
* Fix size class computations for edge conditions involving
extremely large allocations. This regression was first
released in 4.0.0.
* Remove overly restrictive assertions related to the cactive
statistic. This regression was first released in 4.1.0.
OBS-URL: https://build.opensuse.org/request/show/443696
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/jemalloc?expand=0&rev=21
Optimizations:
* Add extent serial numbers and use them where appropriate as a
sort key that is higher priority than address, so that the
allocation policy prefers older extents. This tends to improve
locality (decrease fragmentation) when memory grows downward.
* Refactor madvise(2) configuration so that MADV_FREE is detected
and utilized on Linux 4.5 and newer.
* Mark partially purged arena chunks as non-huge-page.
This improves interaction with Linux's transparent huge page
functionality.
Bug fixes:
* Fix size class computations for edge conditions involving
extremely large allocations. This regression was first
released in 4.0.0.
* Remove overly restrictive assertions related to the cactive
statistic. This regression was first released in 4.1.0.
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=49
New features:
* Add "J" (JSON) support to malloc_stats_print().
* Add Cray compiler support.
Optimizations:
* Add/use adaptive spinning for bootstrapping and radix tree node
initialization.
Bugfixes:
* Fix large allocation to search starting in the optimal size
class heap, which can substantially reduce virtual memory churn
and fragmentation. This regression was first released in 4.0.0.
* Fix stats.arenas.<i>.nthreads accounting.
* Fix and simplify decay-based purging.
* Make DSS (sbrk(2)-related) operations lockless, which resolves
potential deadlocks during thread exit.
* Fix over-sized allocation of radix tree leaf nodes.
* Fix over-sized allocation of arena_t (plus associated stats) data
structures.
* Fix EXTRA_CFLAGS to not affect configuration.
* Fix a Valgrind integration bug.
* Disallow 0x5a junk filling when running in Valgrind.
* Fix a file descriptor leak on Linux. This regression was
first released in 4.2.0.
* Fix static linking of jemalloc with glibc.
* Use syscall(2) rather than {open,read,close}(2) during boot on Linux.
This works around other libraries' system call wrappers performing
reentrant allocation.
* Fix OS X default zone replacement to work with OS X 10.12.
* Fix cached memory management to avoid needless commit/decommit
operations during purging, which resolves permanent virtual
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=47
New features:
* Add "J" (JSON) support to malloc_stats_print().
* Add Cray compiler support.
Optimizations:
* Add/use adaptive spinning for bootstrapping and radix tree node
initialization.
Bugfixes:
* Fix large allocation to search starting in the optimal size
class heap, which can substantially reduce virtual memory churn
and fragmentation. This regression was first released in 4.0.0.
* Fix stats.arenas.<i>.nthreads accounting.
* Fix and simplify decay-based purging.
* Make DSS (sbrk(2)-related) operations lockless, which resolves
potential deadlocks during thread exit.
* Fix over-sized allocation of radix tree leaf nodes.
* Fix over-sized allocation of arena_t (plus associated stats) data
structures.
* Fix EXTRA_CFLAGS to not affect configuration.
* Fix a Valgrind integration bug.
* Disallow 0x5a junk filling when running in Valgrind.
* Fix a file descriptor leak on Linux. This regression was
first released in 4.2.0.
* Fix static linking of jemalloc with glibc.
* Use syscall(2) rather than {open,read,close}(2) during boot on Linux.
This works around other libraries' system call wrappers performing
reentrant allocation.
* Fix OS X default zone replacement to work with OS X 10.12.
* Fix cached memory management to avoid needless commit/decommit
operations during purging, which resolves permanent virtual
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=46
- Update to version 4.2.0
* Add the arena.<i>.reset mallctl, which makes it possible to
discard all of an arena's allocations in a single operation.
* Add the stats.retained and stats.arenas.<i>.retained statistics.
* Add the --with-version configure option.
* Support --with-lg-page values larger than actual page size.
* Use pairing heaps rather than red-black trees for various hot
data structures.
* Streamline fast paths of rtree operations.
* Optimize the fast paths of calloc() and [m,d,sd]allocx().
* Decommit unused virtual memory if the OS does not overcommit.
* Specify MAP_NORESERVE on Linux if [heuristic] overcommit is active,
in order to avoid unfortunate interactions during fork(2).
* Fix chunk accounting related to triggering gdump profiles.
* Link against librt for clock_gettime(2) if glibc < 2.17.
* Scale leak report summary according to sampling probability.
OBS-URL: https://build.opensuse.org/request/show/395107
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/jemalloc?expand=0&rev=18
* Add the arena.<i>.reset mallctl, which makes it possible to
discard all of an arena's allocations in a single operation.
* Add the stats.retained and stats.arenas.<i>.retained statistics.
* Add the --with-version configure option.
* Support --with-lg-page values larger than actual page size.
* Use pairing heaps rather than red-black trees for various hot
data structures.
* Streamline fast paths of rtree operations.
* Optimize the fast paths of calloc() and [m,d,sd]allocx().
* Decommit unused virtual memory if the OS does not overcommit.
* Specify MAP_NORESERVE on Linux if [heuristic] overcommit is active,
in order to avoid unfortunate interactions during fork(2).
* Fix chunk accounting related to triggering gdump profiles.
* Link against librt for clock_gettime(2) if glibc < 2.17.
* Scale leak report summary according to sampling probability.
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=42
* Fix hashing functions to avoid unaligned memory accesses
(and resulting crashes). This is relevant at least to some
ARM-based platforms.
* Fix fork()-related lock rank ordering reversals. These reversals
were unlikely to cause deadlocks in practice except when heap
profiling was enabled and active.
* Fix various chunk leaks in OOM code paths.
* Fix malloc_stats_print() to print opt.narenas correctly.
* Fix a variety of test failures that were due to test fragility
rather than core bugs.
- Remove disable_oom_test.patch, fixed upstream.
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=39
- Update to version 4.1.0
New features:
* Implement decay-based unused dirty page purging, a major optimization
with mallctl API impact. This is an alternative to the existing ratio-based
unused dirty page purging, and is intended to eventually become the sole
purging mechanism. New mallctls:
+ opt.purge
+ opt.decay_time
+ arena.<i>.decay
+ arena.<i>.decay_time
+ arenas.decay_time
+ stats.arenas.<i>.decay_time
* Add --with-malloc-conf, which makes it possible to embed a default options
string during configuration. This was motivated by the desire to specify
--with-malloc-conf=purge:decay , since the default must remain purge:ratio
until the 5.0.0 release.
* Make *allocx() size class overflow behavior defined. The maximum size
class is now less thanPTRDIFF_MAX to protect applications against numerical
overflow, and all allocation functions are guaranteed to indicate errors
rather than potentially crashing if the request size exceeds the maximum size class.
* jeprof:
+ Add raw heap profile support.
+ Add --retain and --exclude for backtrace symbol filtering.
Optimizations:
* Optimize the fast path to combine various bootstrapping and configuration
checks and execute more streamlined code in the common case.
* Use linear scan for small bitmaps (used for small object tracking).
In addition to speeding up bitmap operations on 64-bit systems, this reduces
allocator metadata overhead by approximately 0.2%.
* Separate arena_avail trees, which substantially speeds up run tree operations.
OBS-URL: https://build.opensuse.org/request/show/362831
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/jemalloc?expand=0&rev=15
New features:
* Implement decay-based unused dirty page purging, a major optimization
with mallctl API impact. This is an alternative to the existing ratio-based
unused dirty page purging, and is intended to eventually become the sole
purging mechanism. New mallctls:
+ opt.purge
+ opt.decay_time
+ arena.<i>.decay
+ arena.<i>.decay_time
+ arenas.decay_time
+ stats.arenas.<i>.decay_time
* Add --with-malloc-conf, which makes it possible to embed a default options
string during configuration. This was motivated by the desire to specify
--with-malloc-conf=purge:decay , since the default must remain purge:ratio
until the 5.0.0 release.
* Make *allocx() size class overflow behavior defined. The maximum size
class is now less thanPTRDIFF_MAX to protect applications against numerical
overflow, and all allocation functions are guaranteed to indicate errors
rather than potentially crashing if the request size exceeds the maximum size class.
* jeprof:
+ Add raw heap profile support.
+ Add --retain and --exclude for backtrace symbol filtering.
Optimizations:
* Optimize the fast path to combine various bootstrapping and configuration
checks and execute more streamlined code in the common case.
* Use linear scan for small bitmaps (used for small object tracking).
In addition to speeding up bitmap operations on 64-bit systems, this reduces
allocator metadata overhead by approximately 0.2%.
* Separate arena_avail trees, which substantially speeds up run tree operations.
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=33
- Update to 3.6.0
* Fix a regression in arena_chunk_alloc() that caused crashes
during small/large allocation if chunk allocation failed.
* Fix backtracing for gcc intrinsics-based backtracing by specifying
-fno-omit-frame-pointer to gcc.
* Use dss allocation precedence for huge allocations as well as
small/large allocations.
* Testsuite fixes
- Drop jemalloc-fix-backtracing.patch, merged upstream.
- Enable profiling
- Add jemalloc-fix-backtracing.patch to fix profiling tests on x86
(the failures were triggered due to profiling support.)
OBS-URL: https://build.opensuse.org/request/show/228353
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/jemalloc?expand=0&rev=10
* Fix a regression in arena_chunk_alloc() that caused crashes
during small/large allocation if chunk allocation failed.
* Fix backtracing for gcc intrinsics-based backtracing by specifying
-fno-omit-frame-pointer to gcc.
* Use dss allocation precedence for huge allocations as well as
small/large allocations.
* Testsuite fixes
- Drop jemalloc-fix-backtracing.patch, merged upstream.
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=23
- Add jemalloc-fix-32bit-tests.patch to fix test failures on i586
- Update to version 3.5.0
* Add the *allocx() API, which is a successor to the experimental *allocm()
API. The *allocx() functions are slightly simpler to use because they have
fewer parameters, they directly return the results of primary interest, and
mallocx()/rallocx() avoid the strict aliasing pitfall that
allocm()/rallocx() share with posix_memalign(). Note that *allocm() is
slated for removal in the next non-bugfix release.
* Add support for LinuxThreads.
* Unless heap profiling is enabled, disable floating point code and don't link
with libm. This, in combination with e.g. EXTRA_CFLAGS=-mno-sse on x64
systems, makes it possible to completely disable floating point register
use. Some versions of glibc neglect to save/restore caller-saved floating
point registers during dynamic lazy symbol loading, and the symbol loading
code uses whatever malloc the application happens to have linked/loaded
with, the result being potential floating point register corruption.
* Report ENOMEM rather than EINVAL if an OOM occurs during heap profiling
backtrace creation in imemalign(). This bug impacted posix_memalign() and
aligned_alloc().
* Fix a file descriptor leak in a prof_dump_maps() error path.
* Fix prof_dump() to close the dump file descriptor for all relevant error
paths.
* Fix rallocm() to use the arena specified by the ALLOCM_ARENA(s) flag for
allocation, not just deallocation.
* Fix a data race for large allocation stats counters.
* Fix a potential infinite loop during thread exit. This bug occurred on
Solaris, and could affect other platforms with similar pthreads TSD
implementations.
* Don't junk-fill reallocations unless usable size changes. This fixes a
OBS-URL: https://build.opensuse.org/request/show/215630
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/jemalloc?expand=0&rev=8
* Add the *allocx() API, which is a successor to the experimental *allocm()
API. The *allocx() functions are slightly simpler to use because they have
fewer parameters, they directly return the results of primary interest, and
mallocx()/rallocx() avoid the strict aliasing pitfall that
allocm()/rallocx() share with posix_memalign(). Note that *allocm() is
slated for removal in the next non-bugfix release.
* Add support for LinuxThreads.
* Unless heap profiling is enabled, disable floating point code and don't link
with libm. This, in combination with e.g. EXTRA_CFLAGS=-mno-sse on x64
systems, makes it possible to completely disable floating point register
use. Some versions of glibc neglect to save/restore caller-saved floating
point registers during dynamic lazy symbol loading, and the symbol loading
code uses whatever malloc the application happens to have linked/loaded
with, the result being potential floating point register corruption.
* Report ENOMEM rather than EINVAL if an OOM occurs during heap profiling
backtrace creation in imemalign(). This bug impacted posix_memalign() and
aligned_alloc().
* Fix a file descriptor leak in a prof_dump_maps() error path.
* Fix prof_dump() to close the dump file descriptor for all relevant error
paths.
* Fix rallocm() to use the arena specified by the ALLOCM_ARENA(s) flag for
allocation, not just deallocation.
* Fix a data race for large allocation stats counters.
* Fix a potential infinite loop during thread exit. This bug occurred on
Solaris, and could affect other platforms with similar pthreads TSD
implementations.
* Don't junk-fill reallocations unless usable size changes. This fixes a
violation of the *allocx()/*allocm() semantics.
* Fix growing large reallocation to junk fill new space.
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=17
- Update to version 3.4.1
* Fix a race in the "arenas.extend" mallctl that could cause memory
corruption of internal data structures and subsequent crashes.
* Fix Valgrind integration flaws that caused Valgrind warnings about
reads of uninitialized memory in:
+ arena chunk headers
+ internal zero-initialized data structures
* Preserve errno during the first allocation. A readlink(2) call
during initialization fails unless /etc/malloc.conf exists,
so errno was typically set during the first allocation prior to this fix.
* Fix compilation warnings reported by gcc 4.8.1
- Rename pprof to pprof-jemalloc to prevent conflict with gperftools
OBS-URL: https://build.opensuse.org/request/show/204266
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/jemalloc?expand=0&rev=7
* Fix a race in the "arenas.extend" mallctl that could cause memory
corruption of internal data structures and subsequent crashes.
* Fix Valgrind integration flaws that caused Valgrind warnings about
reads of uninitialized memory in:
+ arena chunk headers
+ internal zero-initialized data structures
* Preserve errno during the first allocation. A readlink(2) call
during initialization fails unless /etc/malloc.conf exists,
so errno was typically set during the first allocation prior to this fix.
* Fix compilation warnings reported by gcc 4.8.1
- Rename pprof to pprof-jemalloc to prevent conflict with gperftools
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=15
- Update to version 3.3.1
* Fix a locking order bug that could cause deadlock during fork
if heap profiling were enabled.
* Fix a chunk recycling bug that could cause the allocator to lose
track of whether a chunk was zeroed.
* Fix TLS-related memory corruption that could occur during thread
exit if the thread never allocated memory. Only the quarantine
and prof facilities were susceptible.
* Internal reallocation of the quarantined object array leaked
the old array.
* Reallocation failure for internal reallocation of the quarantined
object array (very unlikely) resulted in memory corruption.
* Fix Valgrind integration to annotate all internally allocated
memory in a way that keeps Valgrind happy about internal data
structure access.
* Fix building for s390 systems.
- Implement %check
OBS-URL: https://build.opensuse.org/request/show/157950
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/jemalloc?expand=0&rev=4
* Fix a locking order bug that could cause deadlock during fork
if heap profiling were enabled.
* Fix a chunk recycling bug that could cause the allocator to lose
track of whether a chunk was zeroed.
* Fix TLS-related memory corruption that could occur during thread
exit if the thread never allocated memory. Only the quarantine
and prof facilities were susceptible.
* Internal reallocation of the quarantined object array leaked
the old array.
* Reallocation failure for internal reallocation of the quarantined
object array (very unlikely) resulted in memory corruption.
* Fix Valgrind integration to annotate all internally allocated
memory in a way that keeps Valgrind happy about internal data
structure access.
* Fix building for s390 systems.
- Implement %check
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/jemalloc?expand=0&rev=10
Note to reviewer: This is a leaf package.
- Update to version 3.3.0
* Add clipping support to lg_chunk option processing.
* Add the --enable-ivsalloc option.
* Add the --without-export option.
* Add the --disable-zone-allocator option.
* Fix "arenas.extend" mallctl to output the number of arenas.
* Fix chunk_recycyle() to unconditionally inform Valgrind that
returned memory is undefined.
* Fix build break on FreeBSD related to alloca.h.
OBS-URL: https://build.opensuse.org/request/show/149780
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/jemalloc?expand=0&rev=3
