Updates to support libmdbx 0.12.x.

Also, close some hanging open transactions in some error states.

FossilOrigin-Name: 9582fff0788d3f78e9b33f292a2c48afeac32587c89496a5a7d5e97a98085683

.solargraph.yml

@@ -0,0 +1,22 @@
+---
+include:
+- "**/*.rb"
+exclude:
+- spec/**/*
+- test/**/*
+- vendor/**/*
+- ".bundle/**/*"
+require: []
+domains: []
+reporters:
+- rubocop
+- require_not_found
+formatter:
+  rubocop:
+    cops: safe
+    except: []
+    only: []
+    extra_args: []
+require_paths: []
+plugins: []
+max_files: 5000

README.md

@@ -423,7 +423,7 @@ development.
 ## Reporting Issues
 
 Tests are performed against the latest stable MRI Ruby, and I endeavor to test
-against the latest stable libmdbx (as of this writing, the 0.11.x versioning),
+against the latest stable libmdbx (as of this writing, the 0.12.x versioning),
 on both x86 and ARM chipsets.
 
 Things may work for you in other environments - I'm just not matrix testing

ext/mdbx_ext/database.c

@@ -168,6 +168,12 @@ rmdbx_open_env( VALUE self )
 		rb_raise( rmdbx_eDatabaseError, "mdbx_env_open: (%d) %s", rc, mdbx_strerror(rc) );
 	}
 
+	/* Force populate the db->dbi handle.  Under 0.12.x, getting a
+	 * 'permission denied' doing this for the first access with a RDONLY
+	 * for some reason. */
+	rmdbx_open_txn( db, MDBX_TXN_READWRITE );
+	rmdbx_close_txn( db, RMDBX_TXN_ROLLBACK );
+
 	db->state.open = 1;
 	return Qtrue;
 }
@@ -189,8 +195,10 @@ rmdbx_clear( VALUE self )
 	rmdbx_open_txn( db, MDBX_TXN_READWRITE );
 	int rc = mdbx_drop( db->txn, db->dbi, false );
 
-	if ( rc != MDBX_SUCCESS )
+	if ( rc != MDBX_SUCCESS ) {
+		rmdbx_close_txn( db, RMDBX_TXN_ROLLBACK );
 		rb_raise( rmdbx_eDatabaseError, "mdbx_drop: (%d) %s", rc, mdbx_strerror(rc) );
+	}
 
 	rmdbx_close_txn( db, RMDBX_TXN_COMMIT );
 
@@ -229,8 +237,10 @@ rmdbx_drop( VALUE self, VALUE name )
 	rmdbx_open_txn( db, MDBX_TXN_READWRITE );
 	int rc = mdbx_drop( db->txn, db->dbi, true );
 
-	if ( rc != MDBX_SUCCESS )
+	if ( rc != MDBX_SUCCESS ) {
+		rmdbx_close_txn( db, RMDBX_TXN_ROLLBACK );
 		rb_raise( rmdbx_eDatabaseError, "mdbx_drop: (%d) %s", rc, mdbx_strerror(rc) );
+	}
 
 	rmdbx_close_txn( db, RMDBX_TXN_COMMIT );
 
@@ -238,6 +248,12 @@ rmdbx_drop( VALUE self, VALUE name )
 	db->subdb = NULL;
 	rmdbx_close_dbi( db ); /* ensure next access is not in the defunct subdb */
 
+	/* Force populate the new db->dbi handle.  Under 0.12.x, getting a
+	 * 'permission denied' doing this for the first access with a RDONLY
+	 * for some reason. */
+	rmdbx_open_txn( db, MDBX_TXN_READWRITE );
+	rmdbx_close_txn( db, RMDBX_TXN_ROLLBACK );
+
 	return self;
 }
 
@@ -830,7 +846,7 @@ rmdbx_stats( VALUE self )
  *    db.clone => [copy of db]
  *
  * Copy the object (clone/dup).  The returned copy is closed and needs
- * to be reopened before use.  This function likely  has limited use,
+ * to be reopened before use.  This function likely has limited use,
  * considering you can't open two handles within the same process.
  */
 static VALUE rmdbx_init_copy( VALUE copy, VALUE orig )

ext/mdbx_ext/mdbx_ext.c

@@ -58,8 +58,6 @@ rmdbx_log( const char *level, const char *fmt, va_dcl )
 }
 
 
-
-
 /*
  * MDBX initialization
  */