From 617769bce5bcac809791adb11301e40d27c31566 Mon Sep 17 00:00:00 2001 From: Howard Chu Date: Tue, 16 Oct 2012 16:52:13 -0700 Subject: [PATCH] Tweak output, add free page info --- libraries/libmdb/mdb.c | 3 +- libraries/libmdb/mdb.h | 3 +- libraries/libmdb/mdb_stat.c | 75 ++++++++++++++++++++++++++++--------- 3 files changed, 62 insertions(+), 19 deletions(-) diff --git a/libraries/libmdb/mdb.c b/libraries/libmdb/mdb.c index f3c482d888..89bfd71f36 100644 --- 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 739fee7265..e3fc129829 100644 --- 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 8b196d1757..88ac801807 100644 --- 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); -- 2.39.5