Re: [HACKERS] vacuumlo patch

[Tim]

Hi Álvaro, thanks for the response.

Here is the requested "diff with 3 lines of context":

git diff HEAD -- contrib/vacuumlo/vacuumlo.c
diff --git a/contrib/vacuumlo/vacuumlo.c b/contrib/vacuumlo/vacuumlo.c
index f6e2a28..b7c7d64 100644
--- a/contrib/vacuumlo/vacuumlo.c
+++ b/contrib/vacuumlo/vacuumlo.c
@@ -48,6 +48,7 @@ struct _param
     char       *pg_host;
     int            verbose;
     int            dry_run;
+    int            transaction_limit;
 };

 int            vacuumlo(char *, struct _param *);
@@ -282,7 +283,13 @@ vacuumlo(char *database, struct _param * param)
                 fprintf(stderr, "%s", PQerrorMessage(conn));
             }
             else
+            {
                 deleted++;
+                if(param->transaction_limit!=0 &&
deleted>=param->transaction_limit)
+                {
+                    break;
+                }
+            }
         }
         else
             deleted++;
@@ -313,6 +320,7 @@ usage(const char *progname)
     printf("  -h HOSTNAME  database server host or socket directory\n");
     printf("  -n           don't remove large objects, just show what would
be done\n");
     printf("  -p PORT      database server port\n");
+    printf("  -l LIMIT     stop after removing LIMIT LOs\n");
     printf("  -U USERNAME  user name to connect as\n");
     printf("  -w           never prompt for password\n");
     printf("  -W           force password prompt\n");
@@ -342,6 +350,7 @@ main(int argc, char **argv)
     param.pg_port = NULL;
     param.verbose = 0;
     param.dry_run = 0;
+    param.transaction_limit = 0;

     if (argc > 1)
     {
@@ -359,7 +368,7 @@ main(int argc, char **argv)

     while (1)
     {
-        c = getopt(argc, argv, "h:U:p:vnwW");
+        c = getopt(argc, argv, "h:U:p:l:vnwW");
         if (c == -1)
             break;

@@ -395,6 +404,14 @@ main(int argc, char **argv)
                 }
                 param.pg_port = strdup(optarg);
                 break;
+            case 'l':
+                param.transaction_limit = strtol(optarg, NULL, 10);
+                if ((param.transaction_limit < 0) ||
(param.transaction_limit > 2147483647))
+                {
+                    fprintf(stderr, "%s: invalid transaction limit number:
%s, valid range is form 0(disabled) to 2147483647.\n", progname, optarg);
+                    exit(1);
+                }
+                break;
             case 'h':
                 param.pg_host = strdup(optarg);
                 break;