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eclass/multiprocessing: Sync with Gentoo

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It's from Gentoo commit 844eece34638a7b93a55d610d32254504bd2be63.
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Flatcar Buildbot 2023-10-16 07:13:31 +00:00
parent 182d5ea0f7
commit 66396f0e8d
1 changed files with 33 additions and 5 deletions
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38
sdk_container/src/third_party/portage-stable/eclass/multiprocessing.eclass vendored
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@ -1,4 +1,4 @@
# Copyright 1999-2022 Gentoo Authors
# Copyright 1999-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
# @ECLASS: multiprocessing.eclass
@ -64,17 +64,35 @@ get_nproc() {
fi
}
# @FUNCTION: _get_all_makeopts
# @INTERNAL
# @DESCRIPTION:
# Returns ${MAKEOPTS} ${GNUMAKEFLAGS} ${MAKEFLAGS}.
_get_all_makeopts() {
echo "${MAKEOPTS} ${GNUMAKEFLAGS} ${MAKEFLAGS}"
}
# @FUNCTION: get_makeopts_jobs
# @USAGE: [default-jobs]
# @DESCRIPTION:
# Return the number of jobs extracted from the make options (MAKEOPTS,
# GNUMAKEFLAGS, MAKEFLAGS). If the make options do not specify a number,
# then either the provided default is returned, or 1.
get_makeopts_jobs() {
makeopts_jobs "$(_get_all_makeopts)" "${1:-1}"
}
# @FUNCTION: makeopts_jobs
# @USAGE: [${MAKEOPTS}] [${inf:-$(( $(get_nproc) + 1 ))}]
# @DESCRIPTION:
# Searches the arguments (defaults to ${MAKEOPTS}) and extracts the jobs number
# Searches the arguments (or sensible defaults) and extracts the jobs number
# specified therein. Useful for running non-make tools in parallel too.
# i.e. if the user has MAKEOPTS=-j9, this will echo "9" -- we can't return the
# number as bash normalizes it to [0, 255]. If the flags haven't specified a
# -j flag, then "1" is shown as that is the default `make` uses. If the flags
# specify -j without a number, ${inf} is returned (defaults to nproc).
makeopts_jobs() {
[[ $# -eq 0 ]] && set -- "${MAKEOPTS}"
[[ $# -eq 0 ]] && set -- "$(_get_all_makeopts)"
# This assumes the first .* will be more greedy than the second .*
# since POSIX doesn't specify a non-greedy match (i.e. ".*?").
local jobs=$(echo " $* " | sed -r -n \
@ -83,10 +101,20 @@ makeopts_jobs() {
echo ${jobs:-1}
}
# @FUNCTION: get_makeopts_loadavg
# @USAGE: [default-loadavg]
# @DESCRIPTION:
# Return the value for the load-average extracted from the make options (MAKEOPTS,
# GNUMAKEFLAGS, MAKEFLAGS). If the make options do not specify a value, then
# either the optional provided default is returned, or 999.
get_makeopts_loadavg() {
makeopts_loadavg "$(_get_all_makeopts)" "${1:-999}"
}
# @FUNCTION: makeopts_loadavg
# @USAGE: [${MAKEOPTS}] [${inf:-999}]
# @DESCRIPTION:
# Searches the arguments (defaults to ${MAKEOPTS}) and extracts the value set
# Searches the arguments (or sensible defaults) and extracts the value set
# for load-average. For make and ninja based builds this will mean new jobs are
# not only limited by the jobs-value, but also by the current load - which might
# get excessive due to I/O and not just due to CPU load.
@ -95,7 +123,7 @@ makeopts_jobs() {
# If no limit is specified or --load-average is used without a number, ${inf}
# (defaults to 999) is returned.
makeopts_loadavg() {
[[ $# -eq 0 ]] && set -- "${MAKEOPTS}"
[[ $# -eq 0 ]] && set -- "$(_get_all_makeopts)"
# This assumes the first .* will be more greedy than the second .*
# since POSIX doesn't specify a non-greedy match (i.e. ".*?").
local lavg=$(echo " $* " | sed -r -n \