From 93f070ec6b6efd2319eff5d8164dafbdaed4a006 Mon Sep 17 00:00:00 2001
From: Christian Berendt <berendt@b1-systems.de>
Date: Tue, 13 Oct 2015 22:25:52 +0200
Subject: [PATCH] doc-tools: Build in parallel with NUMBER_OF_CORES processes

Change-Id: I7f820d80069f2b98c35f6f0cc1d2dbe9ed2b2cc7
---
 bin/doc-tools-build-rst       | 14 ++++++++++----
 bin/doc-tools-check-languages | 14 ++++++++++----
 2 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/bin/doc-tools-build-rst b/bin/doc-tools-build-rst
index 99bb0232..9cc9be80 100755
--- a/bin/doc-tools-build-rst
+++ b/bin/doc-tools-build-rst
@@ -32,6 +32,12 @@ TAG_OPT=""
 BUILD=""
 LINKCHECK=""
 
+if [ -x "$(command -v getconf)" ]; then
+    NUMBER_OF_CORES=$(getconf _NPROCESSORS_ONLN)
+else
+    NUMBER_OF_CORES=2
+fi
+
 while [[ $# > 0 ]] ; do
     option="$1"
     case $option in
@@ -85,14 +91,14 @@ fi
 if [ "$LINKCHECK" = "1" ] ; then
     # Show sphinx-build invocation for easy reproduction
     set -x
-    sphinx-build -E -W -d $DOCTREES -b linkcheck $TAG_OPT \
-        $DIRECTORY/source $BUILD_DIR
+    sphinx-build -j $NUMBER_OF_CORES -E -W -d $DOCTREES -b linkcheck \
+         $TAG_OPT $DIRECTORY/source $BUILD_DIR
     set +x
 else
     # Show sphinx-build invocation for easy reproduction
     set -x
-    sphinx-build -E -W  -d $DOCTREES -b html $TAG_OPT \
-        $DIRECTORY/source $BUILD_DIR
+    sphinx-build -j $NUMBER_OF_CORES -E -W  -d $DOCTREES -b html \
+        $TAG_OPT $DIRECTORY/source $BUILD_DIR
     set +x
 
     # Copy RST
diff --git a/bin/doc-tools-check-languages b/bin/doc-tools-check-languages
index db4e0a36..b6c4a689 100755
--- a/bin/doc-tools-check-languages
+++ b/bin/doc-tools-check-languages
@@ -14,6 +14,12 @@
 
 BUILD_FAIL=0
 
+if [ -x "$(command -v getconf)" ]; then
+    NUMBER_OF_CORES=$(getconf _NPROCESSORS_ONLN)
+else
+    NUMBER_OF_CORES=2
+fi
+
 function setup_directories {
     language=$1
     for directory in ${DIRECTORIES["$language"]} ; do
@@ -51,7 +57,7 @@ function build_rst {
     if [ ${book} = "install-guide" ] ; then
         TAG="-t obs -t rdo -t ubuntu -t debian"
     fi
-    tox -evenv "sphinx-build -q -E -W -b gettext $TAG ${DOC_DIR}${book}/source/ \
+    tox -evenv "sphinx-build -j $NUMBER_OF_CORES -q -E -W -b gettext $TAG ${DOC_DIR}${book}/source/ \
                 ${DOC_DIR}${book}/source/locale/"
 
     # Merge the common-rst po file in
@@ -82,7 +88,7 @@ function build_rst {
     if [ ${book} = "firstapp" ] ; then
         # Firstapp has several variations, build all of them
         for tag in libcloud dotnet fog pkgcloud shade; do
-            tox -evenv "sphinx-build -q -E -t $tag -D language=${language} \
+            tox -evenv "sphinx-build -j $NUMBER_OF_CORES -q -E -t $tag -D language=${language} \
                 ${DOC_DIR}${book}/source/ \
                 ${DOC_DIR}${book}/build-${tag}/html"
             mkdir -p publish-docs/${language}/${book}-${tag}
@@ -103,7 +109,7 @@ function build_rst {
                 sed -n 4p | sed -e 's/^ *//g')
             sed -i -e "s/\.\. title::.*/.. title:: ${title}/" \
                 ${DOC_DIR}${book}/source/index.rst
-            tox -evenv "sphinx-build -q -E -t $tag -D language=${language} \
+            tox -evenv "sphinx-build -j $NUMBER_OF_CORES -q -E -t $tag -D language=${language} \
                 ${DOC_DIR}${book}/source/ \
                 ${DOC_DIR}${book}/build-${tag}/html"
             mkdir -p publish-docs/${language}/${book}-${tag}
@@ -117,7 +123,7 @@ function build_rst {
                 ${INSTALL_DEBIAN}/index.html
         fi
     else
-        tox -evenv "sphinx-build -q -E -D language=${language} \
+        tox -evenv "sphinx-build -j $NUMBER_OF_CORES -q -E -D language=${language} \
             ${DOC_DIR}${book}/source/ \
             ${DOC_DIR}${book}/build/html"
         mkdir -p publish-docs/${language}/${book}/