diff options
Diffstat (limited to 'subversion/include/private/svn_sqlite.h')
| -rw-r--r-- | subversion/include/private/svn_sqlite.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/subversion/include/private/svn_sqlite.h b/subversion/include/private/svn_sqlite.h index c1d640b76c99..4c03e19a8cda 100644 --- a/subversion/include/private/svn_sqlite.h +++ b/subversion/include/private/svn_sqlite.h @@ -484,6 +484,32 @@ svn_sqlite__with_immediate_transaction(svn_sqlite__db_t *db, SVN_ERR(svn_sqlite__finish_savepoint(svn_sqlite__db, svn_sqlite__err)); \ } while (0) +/* Evaluate the expression EXPR1..EXPR4 within a 'savepoint'. Savepoints can + * be nested. + * + * Begin a savepoint in DB; evaluate the expression EXPR1, which would + * typically be a function call that does some work in DB; if no error occurred, + * run EXPR2; if no error occurred EXPR3; ... and finally release + * the savepoint if EXPR evaluated to SVN_NO_ERROR, otherwise roll back + * to the savepoint and then release it. + */ +#define SVN_SQLITE__WITH_LOCK4(expr1, expr2, expr3, expr4, db) \ + do { \ + svn_sqlite__db_t *svn_sqlite__db = (db); \ + svn_error_t *svn_sqlite__err; \ + \ + SVN_ERR(svn_sqlite__begin_savepoint(svn_sqlite__db)); \ + svn_sqlite__err = (expr1); \ + if (!svn_sqlite__err) \ + svn_sqlite__err = (expr2); \ + if (!svn_sqlite__err) \ + svn_sqlite__err = (expr3); \ + if (!svn_sqlite__err) \ + svn_sqlite__err = (expr4); \ + SVN_ERR(svn_sqlite__finish_savepoint(svn_sqlite__db, svn_sqlite__err)); \ + } while (0) + + /* Helper function to handle several SQLite operations inside a shared lock. This callback is similar to svn_sqlite__with_transaction(), but can be nested (even with a transaction). |