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newlib-cygwin/winsup/cygwin/release/2.3.0

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Fix hang stracing forking processes but not following child * ntdll.h (PROCESSINFOCLASS): Define ProcessDebugFlags. * sigproc.cc (child_info::child_info): Only propagate _CI_STRACED to child if strace is actually tracing child processes. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2015-08-25 00:37:53 +08:00
What's new:
-----------
Implement POSIX_MADV_WILLNEED/POSIX_MADV_DONTNEED for newer OSes * autoload.cc (DiscardVirtualMemory): Import. (PrefetchVirtualMemory): Import. * mmap.cc (posix_madvise): Actually implement POSIX_MADV_WILLNEED utilizing PrefetchVirtualMemory and POSIX_MADV_DONTNEED utilizing DiscardVirtualMemory on systems supporting them. * wincap.h (wincaps::has_broken_prefetchvm): New element. * wincap.cc: Implement above element throughout. (wincapc::init): Make sure has_broken_prefetchvm is only true on W10 under WOW64. * include/cygwin/version.h (CYGWIN_VERSION_DLL_MAJOR): Bump to 2003. (CYGWIN_VERSION_API_MINOR): Reset to 0. * new-features.xml (ov-new2.3): New section, document posix_madvise POSIX_MADV_WILLNEED/POSIX_MADV_DONTNEED change. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2015-08-27 19:34:10 +08:00
- posix_madvise(POSIX_MADV_WILLNEED) now utilizes OS functionality available
starting with Windows 8/Server 2012. Still a no-op on older systems.
- posix_madvise(POSIX_MADV_DONTNEED) now utilizes OS functionality available
starting with Windows 8.1/Server 2012R2. Still a no-op on older systems.
Allow sysconf to return CPU cache information * include/sys/unistd.h (_SC_LEVEL*): Add cache-related variables as on Linux. * fhandler_proc.cc (format_proc_cpuinfo): Fetch cache information from new cache functions in sysconf.cc, get_cpu_cache_intel and get_cpu_cache_amd. * sysconf.cc (__nt_query_system): New local helper. (get_nproc_values): Utilize __nt_query_system on pre-Windows 7 systems. Use GetLogicalProcessorInformationEx otherwise to handle more than 64 CPUs. Only handle _SC_NPROCESSORS_CONF and _SC_NPROCESSORS_ONLN. (get_phys_pages): New helper to handle _SC_PHYS_PAGES. (cpuid2_cache_descriptor): New array to map Intel CPUID 2 descriptor values to cache type, cache size, associativity and linesize. (cpuid2_cache_desc_compar): Comparision function for bsearch over cpuid2_cache_descriptor. (get_cpu_cache_intel_cpuid2): New function to fetch cache info from Intel CPUID 2. (get_cpu_cache_intel_cpuid4): Ditto from Intel CPUID 4. (get_cpu_cache_intel): New function as CPU-specific entry point. (assoc): New array to map associativity values from AMD CPUID 0x80000006. (get_cpu_cache_amd): New function to fetch cache info from AMD CPUIDs 0x80000005 and 0x80000006. (get_cpu_cache): New function to fetch cache info. (sca): Call get_phys_pages if _SC_PHYS_PAGES is requested. Call get_cpu_cache for new _SC_* cache requests. (SC_MAX): Set to _SC_LEVEL4_CACHE_LINESIZE. (get_phys_pages(void)): Call get_phys_pages(int). * include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump. * new-features.xml (ov-new2.3): Document sysconf cache addition. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2015-08-29 15:16:47 +08:00
- sysconf() now supports returning CPU cache information:
_SC_LEVEL1_ICACHE_SIZE, _SC_LEVEL1_ICACHE_ASSOC, _SC_LEVEL1_ICACHE_LINESIZE,
_SC_LEVEL1_DCACHE_SIZE, _SC_LEVEL1_DCACHE_ASSOC, _SC_LEVEL1_DCACHE_LINESIZE,
_SC_LEVEL2_CACHE_SIZE, _SC_LEVEL2_CACHE_ASSOC, _SC_LEVEL2_CACHE_LINESIZE,
_SC_LEVEL3_CACHE_SIZE, _SC_LEVEL3_CACHE_ASSOC, _SC_LEVEL3_CACHE_LINESIZE,
_SC_LEVEL4_CACHE_SIZE, _SC_LEVEL4_CACHE_ASSOC, _SC_LEVEL4_CACHE_LINESIZE
Fix hang stracing forking processes but not following child * ntdll.h (PROCESSINFOCLASS): Define ProcessDebugFlags. * sigproc.cc (child_info::child_info): Only propagate _CI_STRACED to child if strace is actually tracing child processes. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2015-08-25 00:37:53 +08:00
What changed:
-------------
Bug Fixes
---------
- Fix a hang when stracing a forking or spawning process without activating
stracing of child processes.
Addresses: https://cygwin.com/ml/cygwin/2015-08/msg00390.html
winsup.h: Claim Windows 10 support * winsup.h (_WIN32_WINNT): Set to 0x0a00 for Windows 10. (WINVER): Ditto. Remove outdated comment. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2015-08-26 04:23:01 +08:00
- Fix long-standing potential SEGV on 32 bit Cygwin when the dynamic loader
for OS functions fails to load a function on Windows 7 or later.
Addresses: No actual bug report known.
Allow sysconf to return CPU cache information * include/sys/unistd.h (_SC_LEVEL*): Add cache-related variables as on Linux. * fhandler_proc.cc (format_proc_cpuinfo): Fetch cache information from new cache functions in sysconf.cc, get_cpu_cache_intel and get_cpu_cache_amd. * sysconf.cc (__nt_query_system): New local helper. (get_nproc_values): Utilize __nt_query_system on pre-Windows 7 systems. Use GetLogicalProcessorInformationEx otherwise to handle more than 64 CPUs. Only handle _SC_NPROCESSORS_CONF and _SC_NPROCESSORS_ONLN. (get_phys_pages): New helper to handle _SC_PHYS_PAGES. (cpuid2_cache_descriptor): New array to map Intel CPUID 2 descriptor values to cache type, cache size, associativity and linesize. (cpuid2_cache_desc_compar): Comparision function for bsearch over cpuid2_cache_descriptor. (get_cpu_cache_intel_cpuid2): New function to fetch cache info from Intel CPUID 2. (get_cpu_cache_intel_cpuid4): Ditto from Intel CPUID 4. (get_cpu_cache_intel): New function as CPU-specific entry point. (assoc): New array to map associativity values from AMD CPUID 0x80000006. (get_cpu_cache_amd): New function to fetch cache info from AMD CPUIDs 0x80000005 and 0x80000006. (get_cpu_cache): New function to fetch cache info. (sca): Call get_phys_pages if _SC_PHYS_PAGES is requested. Call get_cpu_cache for new _SC_* cache requests. (SC_MAX): Set to _SC_LEVEL4_CACHE_LINESIZE. (get_phys_pages(void)): Call get_phys_pages(int). * include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump. * new-features.xml (ov-new2.3): Document sysconf cache addition. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2015-08-29 15:16:47 +08:00
- sysconf _SC_NPROCESSORS_CONF and _SC_NPROCESSORS_ONLN now handle more than
64 CPUs on Windows 7 and later.