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| #!/system/bin/sh
| # Usage: spin_n_threads.sh <num_threads> [<nice>]
| # spin_n_threads.sh kill
|
| TGID_FILE=/data/local/tmp/spin_n_threads_tgid.txt
|
| spin_loop() {
| while :
| do
| NUM=$(expr 1 + 1)
| done
| }
|
| clean_up() {
| trap - SIGINT SIGTERM SIGKILL
| kill -- -$$
| }
|
| NUM_THREADS=1
| if [ ! -z ${1} ]; then
| if [ ${1} == "kill" ]; then
| TGID=$(cat ${TGID_FILE})
| kill -- -${TGID}
| exit 0
| fi
|
| if [ ${1} -gt 1 ]; then
| NUM_THREADS=${1}
| else
| exit 0
| fi
| fi
|
| if [ ! -z ${2} ]; then
| renice -n ${2} -p $$
| fi
|
| # Register cleanup on trap
| trap clean_up SIGINT SIGTERM SIGKILL
| for i in $(seq 1 $NUM_THREADS ); do
| spin_loop &
| done
|
| echo $$ > ${TGID_FILE}
|
|
