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* Merge libc++, libc++abi and libunwind version 8.0.0.patrick2019-06-171-2/+2
| | | | | | Ports build by naddy@ Tested by visa on octeon Tested by kettenis on macppc and sparc64
* Import libc++ 8.0.0.patrick2019-06-1710-103/+131
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* that "device" is an abstraction to the underlying OS PRNG.espie2019-03-221-0/+5
| | | | | | | In OpenBSD's case, we know it has optimal entropy properties, so just say so. okay mikeb@, "why not" deraadt@
* Merge libc++, libc++abi and libunwind version 7.0.1.patrick2019-02-044-1771/+0
| | | | | | Tested by visa on octeon Tested by kettenis on arm64, armv7 and sparc64 "go for it" deraadt and sthen
* Import libc++ 7.0.1.patrick2019-02-0427-129/+3223
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* instead of defining _LIBCPP_DEBUG in debug.cpp which enables some debugrobert2018-09-111-1/+0
| | | | | | code which breaks quiet a few things, define _LIBCPP_BUILDING_LIBRARY for the complete build to get the needed definitions in debug.cpp without enabling debug code
* merge libc++ 6.0.0 (bump lib major); ok patrick@, kettenis@robert2018-09-113-101/+18
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* import of libc++ 6.0.0robert2018-09-1143-1185/+2711
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* Add hw.ncpuonline to count the number of online CPUs.cheloha2018-07-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of hw.smt means that logical CPUs can be disabled after boot and prior to suspend/resume. If hw.smt=0 (the default), there needs to be a way to count the number of hardware threads available on the system at any given time. So, import HW_NCPUONLINE/hw.ncpuonline from NetBSD and document it. hw.ncpu becomes equal to the number of CPUs given to sched_init_cpu() during boot, while hw.ncpuonline is equal to the number of CPUs available to the scheduler in the cpuset "sched_all_cpus". Set_SC_NPROCESSORS_ONLN equal to this new sysctl and keep _SC_NPROCESSORS_CONF equal to hw.ncpu. This is preferable to adding a new sysctl to count the number of configured CPUs and keeping hw.ncpu equal to the number of online CPUs because such a change would break software in the ecosystem that relies on HW_NCPU/hw.ncpu to measure CPU usage and the like. Such software in base includes top(1), systat(1), and snmpd(8), and perhaps others. We don't need additional locking to count the cardinality of a cpuset in this case because the only interfaces that can modify said cardinality are sysctl(2) and ioctl(2), both of which are under the KERNEL_LOCK. Software using HW_NCPU/hw.ncpu to determine optimal parallism will need to be updated to use HW_NCPUONLINE/hw.ncpuonline. Until then, such software may perform suboptimally. However, most changes will be similar to the change included here for libcxx's std::thread:hardware_concurrency(): using HW_NCPUONLINE in lieu of HW_NCPU should be sufficient for determining optimal parallelism for most software if the change to _SC_NPROCESSORS_ONLN is insufficient. Prompted by deraadt. Discussed at length with kettenis, deraadt, and sthen. Lots of patch tweaks from kettenis. ok kettenis, "proceed" deraadt
* Import libc++ 3.9.0patrick2016-09-0339-0/+14041
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