Bug 1382280 part 2: Install debug information. r=ted

valgrind test will try to load debug information for the modules present
in a stack trace. If it fails to do it, we endup with a stack trace with
only memory addresses.

We install debuginfo for all installed packages and look for all libs
in the system common locations, and try to install the corresponding
debug information package.

These are acomplished with debuginfo-install yum utility script.

MozReview-Commit-ID: 76mHOUKKJud

taskcluster/docker/desktop-build/Dockerfile

@@ -33,6 +33,9 @@ ADD topsrcdir/taskcluster/docker/recipes/install-cmake.sh /setup/install-cmake.s
 # %include taskcluster/docker/recipes/centos6-build-system-setup.sh
 ADD topsrcdir/taskcluster/docker/recipes/centos6-build-system-setup.sh /setup/system-setup.sh
 
+# %include taskcluster/docker/recipes/centos-install-debug-symbols.sh
+ADD topsrcdir/taskcluster/docker/recipes/centos-install-debug-symbols.sh /setup/install-debug-symbols.sh
+
 # TODO remove once base image doesn't install Mercurial
 RUN pip uninstall -y Mercurial
 

taskcluster/docker/recipes/centos-install-debug-symbols.sh

@@ -0,0 +1,95 @@
+#!/bin/bash
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Install debuginfo packages
+
+# enable debug info repository
+yum-config-manager enable debuginfo
+
+install_options="-q -t -y --skip-broken"
+debuginfo_install="debuginfo-install $install_options"
+
+install_debuginfo_for_installed_packages() {
+    yum list installed \
+        | awk 'NF >= 3 && $1 !~ /debuginfo/ {
+                # Remove arch suffix
+                print gensub(/\.(i.86|x86_64|noarch)/, "", "", $1)
+            }' \
+        | xargs $debuginfo_install \
+        || : # ignore errors
+}
+
+echo "Installing debuginfo packages..."
+install_debuginfo_for_installed_packages > /dev/null
+
+# Now search for debuginfo for individual libraries in the system
+
+# Get the length of a string in bytes.
+# We have to set LANG=C to get the length in bytes, not chars.
+strlen() {
+    local old_lang byteslen
+    old_lang=$LANG
+    LANG=C
+    byteslen=${#1}
+    LANG=$old_lang
+    echo $byteslen
+}
+
+echo "Searching for additional debuginfo packages..."
+
+# libraries contains the list of libraries found in the system
+libraries=""
+
+# As we accumulate libraries in the $libraries variable, we have
+# to constantly check we didn't extrapolate the command line
+# argument length limit. arg_max stores the argument limit in
+# bytes, discounting the $debuginfo_install command plus one
+# space.
+arg_max=$(( $(getconf ARG_MAX)-$(strlen $debuginfo_install)-$(strlen " ") ))
+
+to_debuginfo() {
+    # extracted from debuginfo-install script
+    if [[ $1 == *-rpms ]]; then
+        echo ${1%*-rpms}-debug-rpms
+    else
+        echo $1-debuginfo
+    fi
+}
+
+get_debuginfo_package() {
+    local package=${1%.so*}
+
+    # Remove version suffix because some libraries have their debuginfo
+    # package without it in the name.
+    local unversioned_package=${package%-*}
+    if [ "$unversioned_package" != "$package" ]; then
+        package="$package $unversioned_package"
+    fi
+
+    echo $package
+}
+
+walk_dir() {
+    local lib
+    for i in $1/*; do
+        # if we found a library...
+        if [[ $i == *.so ]]; then
+            lib="$(get_debuginfo_package $(basename $i))"
+            if [ $(strlen "$debuginfo_install $libraries $lib") -ge $arg_max ]; then
+                $debuginfo_install $libraries > /dev/null
+                libraries=""
+            fi
+            libraries="$libraries $lib"
+        fi
+    done
+}
+
+for i in /usr/lib /usr/lib64 /lib /lib64; do
+    walk_dir $i
+done
+
+if [ ${#libraries} -gt 0 ]; then
+    $debuginfo_install $libraries > /dev/null
+fi

taskcluster/docker/recipes/centos6-build-system-setup.sh

@@ -9,5 +9,6 @@ cd /setup
 . /setup/install-mercurial.sh
 . /setup/install-make.sh
 . /setup/install-cmake.sh
+. /setup/install-debug-symbols.sh
 
 rm -rf /setup

taskcluster/taskgraph/transforms/docker_image.py

@@ -119,7 +119,7 @@ def fill_template(config, tasks):
                 'chain-of-trust': True,
                 'docker-in-docker': True,
                 'taskcluster-proxy': True,
-                'max-run-time': 3600,
+                'max-run-time': 7200,
             },
         }