Support passing custom values for 'infinity' in makeopts_jobs()
and makeopts_loadavg(). This can be used e.g. when a build system does
not support --loadavg, and therefore '--jobs 999' would most likely
be a really bad idea. Combined with get_nproc(), this can be used to
provide a sane replacement instead.
---
eclass/multiprocessing.eclass | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)
diff --git a/eclass/multiprocessing.eclass b/eclass/multiprocessing.eclass
index 0d241cdc15b6..b7d5f435f888 100644
--- a/eclass/multiprocessing.eclass
+++ b/eclass/multiprocessing.eclass
@@ -79,26 +79,27 @@ get_nproc() {
}
# @FUNCTION: makeopts_jobs
-# @USAGE: [${MAKEOPTS}]
+# @USAGE: [${MAKEOPTS}] [${inf:-999}]
# @DESCRIPTION:
# Searches the arguments (defaults to ${MAKEOPTS}) 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. Since there's
-# no way to represent infinity, we return 999 if the user has -j without a
number.
+# no way to represent infinity, we return ${inf} (defaults to 999) if the user
+# has -j without a number.
makeopts_jobs() {
[[ $# -eq 0 ]] && set -- ${MAKEOPTS}
# This assumes the first .* will be more greedy than the second .*
# since POSIX doesn't specify a non-greedy match (i.e. ".*?").
local jobs=$(echo " $* " | sed -r -n \
-e
's:.*[[:space:]](-[a-z]*j|--jobs[=[:space:]])[[:space:]]*([0-9]+).*:\2:p' \
- -e 's:.*[[:space:]](-[a-z]*j|--jobs)[[:space:]].*:999:p')
+ -e "s:.*[[:space:]](-[a-z]*j|--jobs)[[:space:]].*:${2:-999}:p")
echo ${jobs:-1}
}
# @FUNCTION: makeopts_loadavg
-# @USAGE: [${MAKEOPTS}]
+# @USAGE: [${MAKEOPTS}] [${inf:-999}]
# @DESCRIPTION:
# Searches the arguments (defaults to ${MAKEOPTS}) and extracts the value set
# for load-average. For make and ninja based builds this will mean new jobs are
@@ -106,15 +107,17 @@ makeopts_jobs() {
# get excessive due to I/O and not just due to CPU load.
# Be aware that the returned number might be a floating-point number. Test
# whether your software supports that.
+# If no limit is specified or --load-average is used without a number, ${inf}
+# (defaults to 999) is returned.
makeopts_loadavg() {
[[ $# -eq 0 ]] && set -- ${MAKEOPTS}
# This assumes the first .* will be more greedy than the second .*
# since POSIX doesn't specify a non-greedy match (i.e. ".*?").
local lavg=$(echo " $* " | sed -r -n \
-e
's:.*[[:space:]](-[a-z]*l|--(load-average|max-load)[=[:space:]])[[:space:]]*([0-9]+|[0-9]+\.[0-9]+).*:\3:p'
\
- -e
's:.*[[:space:]](-[a-z]*l|--(load-average|max-load))[[:space:]].*:999:p')
- # Default to 999 since the default is to not use a load limit.
- echo ${lavg:-999}
+ -e
"s:.*[[:space:]](-[a-z]*l|--(load-average|max-load))[[:space:]].*:${2:-999}:p")
+ # Default to ${inf} since the default is to not use a load limit.
+ echo ${lavg:-${2:-999}}
}
# @FUNCTION: multijob_init
--
2.11.0
