contrib/auto_explain/auto_explain.cpp

@@ -72,7 +72,7 @@ void _PG_init(void)
         NULL,
         NULL,
         NULL);
-
+    // Define common Boolean variables
     DefineCustomBoolVariable("auto_explain.log_analyze",
         "Use EXPLAIN ANALYZE for plan logging.",
         NULL,
@@ -84,6 +84,7 @@ void _PG_init(void)
         NULL,
         NULL);
 
+    // Define common Boolean variables of auto_explain.log_verbose
     DefineCustomBoolVariable("auto_explain.log_verbose",
         "Use EXPLAIN VERBOSE for plan logging.",
         NULL,
@@ -95,6 +96,7 @@ void _PG_init(void)
         NULL,
         NULL);
 
+    // Define common Boolean variables of auto_explain.log_buffers
     DefineCustomBoolVariable("auto_explain.log_buffers",
         "Log buffers usage.",
         NULL,

src/bin/gs_cgroup/main.cpp

@@ -827,7 +827,7 @@ static int check_cpuset_value_valid(char* cpuset)
             return -1;
         }
     }
-
+    // check the value
     if ((a < 0) || (b < 0) || (a > b) || (b >= cgutil_cpucnt)) {
         fprintf(stderr, "ERROR: please specify the cpuset with a valid value.\n");
         return -1;
@@ -845,6 +845,7 @@ static int check_cpuset_value_valid(char* cpuset)
  * @Return:  1: OK 0: Not OK
  * @See also:
  */
+// check configuration
 static int check_config_flag(void)
 {
     if (cgutil_opt.cflag || (cgutil_opt.dflag && (*cgutil_opt.clsname || *cgutil_opt.nodegroup)) || cgutil_opt.uflag ||
@@ -861,6 +862,7 @@ static int check_config_flag(void)
  * @Return:  -1: abnormal 0: normal
  * @See also:
  */
+// initialize the configuration
 static int initialize_cgroup_config(void)
 {
     char* hpath = NULL;
@@ -907,6 +909,7 @@ static int initialize_cgroup_config(void)
  * @Return:  -1: abnormal 0: normal
  * @See also:
  */
+// check the configuration status 
 static int check_and_get_group_percent(char* percent, char* gtype)
 {
     char* bad = NULL;
@@ -943,6 +946,7 @@ static int check_and_get_group_percent(char* percent, char* gtype)
  *            -1: abnormal
  *             0: normal
  */
+// structure of long options
 static struct option long_options[] = {{"help", no_argument, NULL, 'h'},
     {"version", no_argument, NULL, 'V'},
     {"abort", no_argument, NULL, 'a'},
@@ -956,6 +960,7 @@ static struct option long_options[] = {{"help", no_argument, NULL, 'h'},
     {"rename", no_argument, NULL, 7},
     {NULL, 0, NULL, 0}};
 
+// match the choice
 static int parse_options(int argc, char** argv)
 {
     int c;
@@ -1166,7 +1171,7 @@ int main(int argc, char** argv)
             " or \"/sys/devices/system\" is acceptable. \n");
         exit(-1);
     }
-
+    // set the style of string
     int rc = sprintf_s(cgutil_allset, sizeof(cgutil_allset), "%d-%d", 0, cgutil_cpucnt - 1);
     securec_check_intval(rc, , -1);