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SR-10611: ProcessInfo.activeProcessorCount too high in containerised Linux #2215

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Merged
merged 2 commits into from
May 8, 2019
Merged

SR-10611: ProcessInfo.activeProcessorCount too high in containerised Linux #2215

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SR-10611: ProcessInfo.activeProcessorCount too high in containerized …
spevans May 3, 2019
e4fa760
SR-10611: Use CMake to manage HAVE_SCHED_AFFINITY
spevans May 7, 2019
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11 changes: 11 additions & 0 deletions CoreFoundation/Base.subproj/CFUtilities.c
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,9 @@
#include <pthread.h>
#endif

#if DEPLOYMENT_TARGET_LINUX && __has_include(<sched.h>)
#include <sched.h>
#endif


#if !defined(CF_HAVE_HW_CONFIG_COMMPAGE) && defined(_COMM_PAGE_LOGICAL_CPUS) && defined(_COMM_PAGE_PHYSICAL_CPUS) && defined(_COMM_PAGE_ACTIVE_CPUS) && !__has_feature(address_sanitizer)
Expand Down Expand Up @@ -451,6 +454,14 @@ CF_PRIVATE CFIndex __CFActiveProcessorCount() {
pcnt = 0;
}
#elif DEPLOYMENT_TARGET_LINUX

#ifdef _SCHED_H
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Please use cmake for this:

include(CheckSymbolExists)
include(CheckIncludeFile)
check_include_file("sched.h" HAVE_SCHED_H)
check_symbol_exists(sched_getaffinity "sched.h" HAVE_SCHED_GETAFFINITY)

cpu_set_t set;
if (sched_getaffinity (getpid(), sizeof(set), &set) == 0) {
return CPU_COUNT (&set);
}
#endif

pcnt = sysconf(_SC_NPROCESSORS_ONLN);
#else
// Assume the worst
Expand Down