tools_common.sh: use $$ in VPX_TEST_OUTPUT_DIR

a bit simpler than invoking awk for rand()

Change-Id: I36ac474708f7bf0157ae59b882c2a9f69b0aaf41

diff --git a/test/tools_common.sh b/test/tools_common.sh
index dffd4c4..27785c3 100755 (executable)
--- a/test/tools_common.sh
+++ b/test/tools_common.sh
@@ -383,8 +383,7 @@ else
   VPX_TEST_TEMP_ROOT=/tmp
 fi
 
-VPX_TEST_RAND=$(awk 'BEGIN { srand(); printf "%d\n",(rand() * 32768)}')
-VPX_TEST_OUTPUT_DIR="${VPX_TEST_TEMP_ROOT}/vpx_test_${VPX_TEST_RAND}"
+VPX_TEST_OUTPUT_DIR="${VPX_TEST_TEMP_ROOT}/vpx_test_$$"
 
 if ! mkdir -p "${VPX_TEST_OUTPUT_DIR}" || \
    [ ! -d "${VPX_TEST_OUTPUT_DIR}" ]; then
@@ -422,7 +421,6 @@ vlog "$(basename "${0%.*}") test configuration:
   VPX_TEST_LIST_TESTS=${VPX_TEST_LIST_TESTS}
   VPX_TEST_OUTPUT_DIR=${VPX_TEST_OUTPUT_DIR}
   VPX_TEST_PREFIX=${VPX_TEST_PREFIX}
-  VPX_TEST_RAND=${VPX_TEST_RAND}
   VPX_TEST_RUN_DISABLED_TESTS=${VPX_TEST_RUN_DISABLED_TESTS}
   VPX_TEST_SHOW_PROGRAM_OUTPUT=${VPX_TEST_SHOW_PROGRAM_OUTPUT}
   VPX_TEST_TEMP_ROOT=${VPX_TEST_TEMP_ROOT}