Tweak output, add free page info

diff --git a/libraries/libmdb/mdb.c b/libraries/libmdb/mdb.c
index f3c482d..89bfd71 100644 (file)
--- a/libraries/libmdb/mdb.c
+++ b/libraries/libmdb/mdb.c
@@ -6660,11 +6660,12 @@ mdb_env_info(MDB_env *env, MDB_envinfo *arg)
                return EINVAL;
 
        toggle = mdb_env_pick_meta(env);
+       arg->me_mapaddr = (env->me_flags & MDB_FIXEDMAP) ? env->me_map : 0;
        arg->me_mapsize = env->me_mapsize;
        arg->me_maxreaders = env->me_maxreaders;
        arg->me_numreaders = env->me_numreaders;
-       arg->me_last_txnid = env->me_metas[toggle]->mm_txnid;
        arg->me_last_pgno = env->me_metas[toggle]->mm_last_pg;
+       arg->me_last_txnid = env->me_metas[toggle]->mm_txnid;
        return MDB_SUCCESS;
 }
 

diff --git a/libraries/libmdb/mdb.h b/libraries/libmdb/mdb.h
index 739fee7..e3fc129 100644 (file)
--- a/libraries/libmdb/mdb.h
+++ b/libraries/libmdb/mdb.h
@@ -360,9 +360,10 @@ typedef struct MDB_stat {
 
 /** @brief Information about the environment */
 typedef struct MDB_envinfo {
+       void    *me_mapaddr;                    /**< Address of map, if fixed */
        size_t  me_mapsize;                             /**< Size of the data memory map */
-       size_t  me_last_txnid;                  /**< ID of the last committed transaction */
        size_t  me_last_pgno;                   /**< ID of the last used page */
+       size_t  me_last_txnid;                  /**< ID of the last committed transaction */
        unsigned int me_maxreaders;             /**< maximum number of threads for the environment */
        unsigned int me_numreaders;             /**< maximum number of threads used in the environment */
 } MDB_envinfo;

diff --git a/libraries/libmdb/mdb_stat.c b/libraries/libmdb/mdb_stat.c
index 8b196d1..88ac801 100644 (file)
--- a/libraries/libmdb/mdb_stat.c
+++ b/libraries/libmdb/mdb_stat.c
@@ -19,17 +19,19 @@
 
 static void prstat(MDB_stat *ms)
 {
-       printf("Page size: %u\n", ms->ms_psize);
-       printf("Tree depth: %u\n", ms->ms_depth);
-       printf("Branch pages: %zu\n", ms->ms_branch_pages);
-       printf("Leaf pages: %zu\n", ms->ms_leaf_pages);
-       printf("Overflow pages: %zu\n", ms->ms_overflow_pages);
-       printf("Entries: %zu\n", ms->ms_entries);
+#if 0
+       printf("  Page size: %u\n", ms->ms_psize);
+#endif
+       printf("  Tree depth: %u\n", ms->ms_depth);
+       printf("  Branch pages: %zu\n", ms->ms_branch_pages);
+       printf("  Leaf pages: %zu\n", ms->ms_leaf_pages);
+       printf("  Overflow pages: %zu\n", ms->ms_overflow_pages);
+       printf("  Entries: %zu\n", ms->ms_entries);
 }
 
 static void usage(char *prog)
 {
-       fprintf(stderr, "usage: %s dbpath [-a|-s subdb]\n", prog);
+       fprintf(stderr, "usage: %s dbpath [-e] [-f] [-n] [-a|-s subdb]\n", prog);
        exit(EXIT_FAILURE);
 }
 
@@ -44,7 +46,7 @@ int main(int argc, char *argv[])
        char *prog = argv[0];
        char *envname;
        char *subname = NULL;
-       int alldbs = 0, envinfo = 0;
+       int alldbs = 0, envinfo = 0, envflags = 0, freinfo = 0;
 
        if (argc < 2) {
                usage(prog);
@@ -53,9 +55,11 @@ int main(int argc, char *argv[])
        /* -a: print stat of main DB and all subDBs
         * -s: print stat of only the named subDB
         * -e: print env info
+        * -f: print freelist info
+        * -n: use NOSUBDIR flag on env_open
         * (default) print stat of only the main DB
         */
-       while ((i = getopt(argc, argv, "aes:")) != EOF) {
+       while ((i = getopt(argc, argv, "aefns:")) != EOF) {
                switch(i) {
                case 'a':
                        alldbs++;
@@ -63,11 +67,16 @@ int main(int argc, char *argv[])
                case 'e':
                        envinfo++;
                        break;
+               case 'f':
+                       freinfo++;
+                       break;
+               case 'n':
+                       envflags |= MDB_NOSUBDIR;
+                       break;
                case 's':
                        subname = optarg;
                        break;
                default:
-                       fprintf(stderr, "%s: unrecognized option -%c\n", prog, optopt);
                        usage(prog);
                }
        }
@@ -82,7 +91,7 @@ int main(int argc, char *argv[])
                mdb_env_set_maxdbs(env, 4);
        }
 
-       rc = mdb_env_open(env, envname, MDB_RDONLY, 0664);
+       rc = mdb_env_open(env, envname, envflags | MDB_RDONLY, 0664);
        if (rc) {
                printf("mdb_env_open failed, error %d %s\n", rc, mdb_strerror(rc));
                goto env_close;
@@ -94,12 +103,43 @@ int main(int argc, char *argv[])
        }
 
        if (envinfo) {
+               rc = mdb_env_stat(env, &mst);
                rc = mdb_env_info(env, &mei);
-               printf("Map size: %zu \n", mei.me_mapsize);
-               printf("Last transaction ID: %zu\n", mei.me_last_txnid);
-               printf("Last page used: %zu\n", mei.me_last_pgno);
-               printf("Max readers: %u\n", mei.me_maxreaders);
-               printf("Number of readers used: %u\n", mei.me_numreaders);
+               printf("Environment Info\n");
+               printf("  Map address: %p\n", mei.me_mapaddr);
+               printf("  Map size: %zu\n", mei.me_mapsize);
+               printf("  Page size: %u\n", mst.ms_psize);
+               printf("  Max pages: %zu\n", mei.me_mapsize / mst.ms_psize);
+               printf("  Number of pages used: %zu\n", mei.me_last_pgno+1);
+               printf("  Last transaction ID: %zu\n", mei.me_last_txnid);
+               printf("  Max readers: %u\n", mei.me_maxreaders);
+               printf("  Number of readers used: %u\n", mei.me_numreaders);
+       }
+
+       if (freinfo) {
+               MDB_cursor *cursor;
+               MDB_val data;
+               size_t pages = 0, *iptr;
+
+               printf("Freelist Status\n");
+               dbi = 0;
+               rc = mdb_cursor_open(txn, dbi, &cursor);
+               if (rc) {
+                       printf("mdb_cursor_open failed, error %d %s\n", rc, mdb_strerror(rc));
+                       goto txn_abort;
+               }
+               rc = mdb_stat(txn, dbi, &mst);
+               if (rc) {
+                       printf("mdb_stat failed, error %d %s\n", rc, mdb_strerror(rc));
+                       goto txn_abort;
+               }
+               while ((rc = mdb_cursor_get(cursor, NULL, &data, MDB_NEXT)) == 0) {
+                       iptr = data.mv_data;
+                       pages += *iptr;
+               }
+               mdb_cursor_close(cursor);
+               prstat(&mst);
+               printf("  Free pages: %zu\n", pages);
        }
 
        rc = mdb_open(txn, subname, 0, &dbi);
@@ -113,6 +153,7 @@ int main(int argc, char *argv[])
                printf("mdb_stat failed, error %d %s\n", rc, mdb_strerror(rc));
                goto txn_abort;
        }
+       printf("Status of %s\n", subname ? subname : "Main DB");
        prstat(&mst);
 
        if (alldbs) {
@@ -131,7 +172,7 @@ int main(int argc, char *argv[])
                        str[key.mv_size] = '\0';
                        rc = mdb_open(txn, str, 0, &db2);
                        if (rc == MDB_SUCCESS)
-                               printf("\n%s\n", str);
+                               printf("Status of %s\n", str);
                        free(str);
                        if (rc) continue;
                        rc = mdb_stat(txn, db2, &mst);