while IFS= read -r pid ; do
# /proc/pid/cmdline is null separated.
- if full_command_no_argument=$(cut -d '' -f 1 2>/dev/null < /proc/"$pid"/cmdline); then
+ if full_command_no_argument=$(tr '\0' '\n' < /proc/"$pid"/cmdline 2>/dev/null | head -n1); then
command_basename=$(basename "$full_command_no_argument")
if grep -q "$pattern" <<< "$command_basename"; then
echo "$pid"
# $2 = include special characters; 1 = yes, 0 = no; defaults to yes
function randstring()
{
+ local len="${1:-16}"
+
[ "$2" == "0" ] && CHAR="[:alnum:]" || CHAR="[:graph:]"
- cat /dev/urandom 2>/dev/null | tr -cd "$CHAR" 2>/dev/null | head -c ${1:-16} 2>/dev/null
+ # /dev/urandom isn't guaranteed to generate valid multi-byte characters.
+ # Specifying the C locale eliminates the "Illegal byte sequence" error
+ # that 'tr' outputs in such cases.
+ LC_CTYPE=C tr -cd "$CHAR" < /dev/urandom 2>/dev/null | head -c "$len" 2>/dev/null
echo
}
+# Helpers for get_possible_cpus.
+function get_possible_cpus_count_from_sysfs_possible_mask()
+{
+ local max_possible_cpu_id
+
+ # The Awk script extracts the highest CPU id from the possible CPU
+ # mask. Assuming a numerical order, a field separator '-' and a record
+ # separator ','. The last value parsed is the highest id.
+ if [ -f /sys/devices/system/cpu/possible ]; then
+ max_possible_cpu_id=$(awk -F '-' 'BEGIN { RS = ","} { last = $NF } END { printf("%d\n", last) }' \
+ /sys/devices/system/cpu/possible)
+ echo "$((max_possible_cpu_id+1))"
+ else
+ echo "0"
+ fi
+}
+
+# This is a fallback if the possible CPU mask is not available. This will not
+# take into account unplugged CPUs.
+function get_max_cpus_count_from_sysfs_cpu_directories()
+{
+ local max_possible_cpu_id=0
+ local current_cpu_id
+
+ for i in /sys/devices/system/cpu/cpu[0-9]*; do
+ current_cpu_id="${i#/sys/devices/system/cpu/cpu}"
+ if [ "$current_cpu_id" -gt "$max_possible_cpu_id" ]; then
+ max_possible_cpu_id="$current_cpu_id"
+ fi
+ done
+
+ echo "$((max_possible_cpu_id+1))"
+}
+
+# Return the number of possible CPUs.
+function get_possible_cpus_count()
+{
+ local possible_cpus_count
+ possible_cpus_count=$(get_possible_cpus_count_from_sysfs_possible_mask)
+
+ if [ "$possible_cpus_count" -eq "0" ]; then
+ local configured_cpus_count
+ configured_cpus_count=$(getconf _NPROCESSORS_CONF)
+ possible_cpus_count=$(get_max_cpus_count_from_sysfs_cpu_directories)
+ possible_cpus_count=$((configured_cpus_count > possible_cpus_count \
+ ? configured_cpus_count \
+ : possible_cpus_count))
+ fi
+
+ echo "$possible_cpus_count"
+}
+
+# Return the list of exposed CPU.
+#
+# NOTE! Use it like so:
+#
+# IFS=" " read -r -a VARIABLE <<< "$(get_exposed_cpus_list)"
+function get_exposed_cpus_list()
+{
+ local list=()
+
+ for i in /sys/devices/system/cpu/cpu[0-9]*; do
+ list+=("${i#/sys/devices/system/cpu/cpu}")
+ done
+
+ echo "${list[@]}"
+}
+
+# Return any available CPU found. Do not make assumption about the returned
+# value, e.g. that it could be 0.
+function get_any_available_cpu()
+{
+ for cpu in /sys/devices/system/cpu/cpu[0-9]*; do
+ echo "${cpu#/sys/devices/system/cpu/cpu}"
+ break;
+ done
+}
+
# Return the number of _configured_ CPUs.
function conf_proc_count()
{
function list_triggers_matches_ok ()
{
- local tmp_stdout=$(mktemp --tmpdir -t "tmp.${FUNCNAME[0]}_stdout.XXXXXX")
- local tmp_stderr=$(mktemp --tmpdir -t "tmp.${FUNCNAME[0]}_stderr.XXXXXX")
+ local tmp_stdout=$(mktemp -t "tmp.${FUNCNAME[0]}_stdout.XXXXXX")
+ local tmp_stderr=$(mktemp -t "tmp.${FUNCNAME[0]}_stderr.XXXXXX")
local test_name="$1"
local expected_stdout_file="$2"
local test_name="$1"
local expected_stdout_file="$2"
- tmp_stdout_raw=$(mktemp --tmpdir -t "tmp.${FUNCNAME[0]}_stdout.XXXXXX")
- tmp_stdout=$(mktemp --tmpdir -t "tmp.${FUNCNAME[0]}_stdout.XXXXXX")
- tmp_stderr=$(mktemp --tmpdir -t "tmp.${FUNCNAME[0]}_stderr.XXXXXX")
+ tmp_stdout_raw=$(mktemp -t "tmp.${FUNCNAME[0]}_stdout.XXXXXX")
+ tmp_stdout=$(mktemp -t "tmp.${FUNCNAME[0]}_stdout.XXXXXX")
+ tmp_stderr=$(mktemp -t "tmp.${FUNCNAME[0]}_stderr.XXXXXX")
diag "$TESTDIR/../src/bin/lttng/$LTTNG_BIN --mi xml list-triggers"