Add mdb_version()

libraries/libmdb/mdb.c

@@ -437,6 +437,15 @@ memnrcmp(const void *s1, size_t n1, const void *s2, size_t n2)
 	return *p1 - *p2;
 }
 
+char *
+mdb_version(int *maj, int *min, int *pat)
+{
+	*maj = MDB_VERSION_MAJOR;
+	*min = MDB_VERSION_MINOR;
+	*pat = MDB_VERSION_PATCH;
+	return MDB_VERSION_STRING;
+}
+
 int
 mdb_cmp(MDB_txn *txn, MDB_dbi dbi, const MDB_val *a, const MDB_val *b)
 {
@@ -596,10 +605,10 @@ mdb_touch(MDB_txn *txn, MDB_pageparent *pp)
 }
 
 int
-mdb_env_sync(MDB_env *env)
+mdb_env_sync(MDB_env *env, int force)
 {
 	int rc = 0;
-	if (!F_ISSET(env->me_flags, MDB_NOSYNC)) {
+	if (force || !F_ISSET(env->me_flags, MDB_NOSYNC)) {
 		if (fsync(env->me_fd))
 			rc = errno;
 	}
@@ -899,9 +908,9 @@ mdb_txn_commit(MDB_txn *txn)
 		free(dp);
 	}
 
-	if ((n = mdb_env_sync(env)) != 0 ||
+	if ((n = mdb_env_sync(env, 0)) != 0 ||
 	    (n = mdb_env_write_meta(txn)) != MDB_SUCCESS ||
-	    (n = mdb_env_sync(env)) != 0) {
+	    (n = mdb_env_sync(env, 0)) != 0) {
 		mdb_txn_abort(txn);
 		return n;
 	}

libraries/libmdb/mdb.h

@@ -35,7 +35,14 @@
 #define MDB_VERSION_MAJOR	0
 #define MDB_VERSION_MINOR	8
 #define MDB_VERSION_PATCH	0
-#define MDB_VERSION_FULL	((MDB_VERSION_MAJOR << 24) | (MDB_VERSION_MINOR << 16) | MDB_VERSION_PATCH)
+#define MDB_VERINT(a,b,c)	((a << 24) | (b << 16) | c)
+#define MDB_VERSION_FULL	\
+	MDB_VERINT(MDB_VERSION_MAJOR,MDB_VERSION_MINOR,MDB_VERSION_PATCH)
+#define MDB_VERSION_DATE	"August 11, 2011"
+#define MDB_VERSTR(a,b,c,d)	"MDB " #a "." #b "." #c ": (" #d ")"
+#define MDB_VERFOO(a,b,c,d)	MDB_VERSTR(a,b,c,d)
+#define	MDB_VERSION_STRING	\
+	MDB_VERFOO(MDB_VERSION_MAJOR,MDB_VERSION_MINOR,MDB_VERSION_PATCH,MDB_VERSION_DATE)
 
 struct MDB_cursor;
 struct MDB_txn;
@@ -103,10 +110,11 @@ typedef struct MDB_stat {
 	unsigned long	ms_entries;
 } MDB_stat;
 
+char *mdb_version(int *major, int *minor, int *patch);
 int  mdb_env_create(MDB_env **env);
 int  mdb_env_open(MDB_env *env, const char *path, unsigned int flags, mode_t mode);
 int  mdb_env_stat(MDB_env *env, MDB_stat *stat);
-int  mdb_env_sync(MDB_env *env);
+int  mdb_env_sync(MDB_env *env, int force);
 void mdb_env_close(MDB_env *env);
 int  mdb_env_get_flags(MDB_env *env, unsigned int *flags);
 int  mdb_env_get_path(MDB_env *env, const char **path);