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If getconf returns empty output, try cpuinfo. (#11302) 

Also, add message output (temporarily) for gathering data
on all the dashboard machines. After the test runs on the
overnight dashboards tonight, I'll comment out the message
output and commit/push again.
This commit is contained in:
David Cole 2010-11-05 15:57:21 -04:00 committed by Brad King
parent 9cc8ad99c9
commit 4d6418f683
1 changed files with 17 additions and 8 deletions
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17
Modules/ProcessorCount.cmake
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@ -30,6 +30,7 @@ function(ProcessorCount var)
if(WIN32)
# Windows:
set(count "$ENV{NUMBER_OF_PROCESSORS}")
message("ProcessorCount: using environment variable")
elseif(APPLE)
# Mac:
find_program(ProcessorCount_cmd_sysctl sysctl
@ -38,21 +39,29 @@ function(ProcessorCount var)
execute_process(COMMAND ${ProcessorCount_cmd_sysctl} -n hw.ncpu
OUTPUT_STRIP_TRAILING_WHITESPACE
OUTPUT_VARIABLE count)
message("ProcessorCount: using sysctl '${ProcessorCount_cmd_sysctl}'")
endif()
else()
# Linux (and other systems with getconf):
find_program(ProcessorCount_cmd_getconf getconf)
if(ProcessorCount_cmd_getconf)
# Linux and other systems with getconf:
execute_process(COMMAND ${ProcessorCount_cmd_getconf} _NPROCESSORS_ONLN
OUTPUT_STRIP_TRAILING_WHITESPACE
OUTPUT_VARIABLE count)
else()
# Linux and other systems with /proc/cpuinfo:
message("ProcessorCount: using getconf '${ProcessorCount_cmd_getconf}'")
endif()
endif()
# Execute this code when there is no 'sysctl' or 'getconf' or
# when previously executed methods return empty output:
#
if(NOT count)
# Systems with /proc/cpuinfo:
set(cpuinfo_file /proc/cpuinfo)
if(EXISTS "${cpuinfo_file}")
file(STRINGS "${cpuinfo_file}" procs REGEX "^processor.: [0-9]+$")
list(LENGTH procs count)
endif()
message("ProcessorCount: using cpuinfo '${cpuinfo_file}'")
endif()
endif()