Added --helgrind support to crash_gen tool

tests/pytest/crash_gen.sh

@@ -42,6 +42,10 @@ TAOSD_DIR=`find $TAOS_DIR -name "taosd"|grep bin|head -n1`
 
 LIB_DIR=`echo $TAOSD_DIR|rev|cut -d '/' -f 3,4,5,6|rev`/lib
 
+# Now getting ready to execute Python
+# The following is the default of our standard dev env (Ubuntu 20.04), modify/adjust at your own risk
+PYTHON_EXEC=python3.8
+
 # First we need to set up a path for Python to find our own TAOS modules, so that "import" can work.
 export PYTHONPATH=$(pwd)/../../src/connector/python/linux/python3:$(pwd)
 
@@ -57,9 +61,15 @@ if [[ $1 == '--valgrind' ]]; then
   valgrind  \
     --leak-check=yes \
     --suppressions=crash_gen/valgrind_taos.supp \
-    python3.8 \
+    $PYTHON_EXEC \
+    ./crash_gen/crash_gen.py $@
+elif [[ $1 == '--helgrind' ]]; then
+  shift
+  valgrind  \
+    --tool=helgrind \
+    $PYTHON_EXEC \
     ./crash_gen/crash_gen.py $@
 else
-  python3.8 ./crash_gen/crash_gen.py $@
+  $PYTHON_EXEC ./crash_gen/crash_gen.py $@
 fi
 

tests/pytest/crash_gen/crash_gen.py

@@ -421,6 +421,7 @@ class ThreadCoordinator:
                 errno2 = Helper.convertErrno(err.errno)  # correct error scheme
                 errMsg = "Transition failed: errno=0x{:X}, msg: {}".format(errno2, err)
                 logger.info(errMsg)
+                traceback.print_exc()
                 self._execStats.registerFailure(errMsg)
 
             # Then we move on to the next step