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-2009-03-08 Le-Chun Wu <lcwu@google.com>
-
- * attribs.c (decl_attributes): Merge the attribute arguments if
- another attribute of the same kind is already on the decl.
- (merge_lock_attr_args): New function.
- * c-common.c (check_lock_unlock_attr_args): Fix coding style issues.
-
-2009-03-05 Le-Chun Wu <lcwu@google.com>
-
- * tree-threadsafe-analyze.c (is_base_object_base_class): New function.
- (get_canonical_expr): Enhanced to handle base class objects.
- (lock_set_contains): Likewise.
- (handle_call_gs): Fix an issue in processing the 'this' object of a
- method call.
-
-2009-01-20 Le-Chun Wu <lcwu@google.com>
-
- * cp/parser.c (cp_parser_init_declarator): Pass both prefix_attributes
- and attributes to grokfield.
-
-2009-01-07 Le-Chun Wu <lcwu@google.com>
-
- * tree-threadsafe-analyze.c (lock_set_contains): Check the lock set
- with the fully-qualified name if the lock is a field.
-
-2008-12-18 Le-Chun Wu <lcwu@google.com>
-
- * tree-threadsafe-analyze.c (get_canonical_expr): Fix an issue in
- handling lockable objects wrapped in smart pointers.
-
-2008-12-17 Le-Chun Wu <lcwu@google.com>
-
- * attribs.c (decl_attributes): Handle fake attribute argument list
- nodes for delay parsing and lock attributes with unsupported arguments.
- (is_lock_attribute_with_args): New function.
- (is_lock_attribute_p): Likewise.
- (extract_lock_attributes): Likewise.
- * tree.h (is_lock_attribute_with_args): Declaration for new function.
- (extract_lock_attributes): Likewise.
- * toplev.c (parsing_lock_attribute): New global variable.
- * toplev.h (parsing_lock_attribute): Declaration for new global
- variable.
- * cp/call.c (build_new_method_call): Suppress errors for calls in lock
- attributes.
- * cp/pt.c (pending_attribute): New struct for pending lock attribute
- whose instantiation is deferred.
- (pending_lock_attributes): New static variable pointing to pending
- lock attributes.
- (find_parameter_packs_r): Skip walking the subtrees if the tree list
- node is created for delay parsing.
- (apply_late_template_attributes): Defer instantiation of lock
- attributes.
- (pa_reverse): New function.
- (instantiate_class_template): Instantiate the deferred lock attributes
- and apply them to the corresponding declarations.
- (tsubst_copy): Suppress errors for lock attributes.
- * cp/semantics.c (finish_non_static_data_member): Suppress errors for
- and allow uses of non-static class members in lock attributes.
- * cp/lex.c (unqualified_name_lookup_error): Suppress errors for lock
- attributes.
- * cp/decl2.c (is_late_template_attribute): Handle delay parsing of lock
- attribute arguments.
- * cp/parser.c (cp_parser): New field.
- (cp_parser_name_lookup_error): Suppress errors for lock attributes.
- (cp_parser_new): Initialize unparsed_attribute_args_queue to NULL_TREE.
- (cp_parser_parenthesized_expression_list): Fix a problem in parsing
- identifier arguments and skip folding for decl arguments.
- (cp_parser_condition): Add a new argument to cp_parser_attributes_opt.
- (cp_parser_decl_specifier_seq): Likewise.
- (cp_parser_conversion_type_id): Likewise.
- (cp_parser_elaborated_type_specifier): Likewise.
- (cp_parser_elaborated_type_specifier): Likewise.
- (cp_parser_enum_specifier): Likewise.
- (cp_parser_namespace_definition): Likewise.
- (cp_parser_using_directive): Likewise.
- (cp_parser_init_declarator): Allow lock attributes on function
- definitions. Also add a new argument to cp_parser_attributes_opt.
- (cp_parser_declarator): Add a new argument to cp_parser_attributes_opt.
- (cp_parser_type_specifier_seq): Likewise.
- (cp_parser_parameter_declaration): Likewise.
- (cp_parser_class_specifier): Late parse the lock attribute arguments
- only after finish the outermost class. Also add a new argument to
- cp_parser_attributes_opt.
- (cp_parser_class_head): Add a new argument to cp_parser_attributes_opt.
- (cp_parser_member_declaration): Likewise.
- (cp_parser_attributes_opt): Add a new parameter 'member_p' and call
- cp_parser_attribute_list with it.
- (cp_parser_save_attribute_arg_list): New function.
- (cp_parser_attribute_list): Add a new parameter 'member_p'. Also delay
- parsing of lock attribute arguments by saving the tokens.
- (cp_parser_late_parsing_attribute_arg_lists): New function.
- (cp_parser_objc_class_ivars): Add a new argument to
- cp_parser_attributes_opt.
- (cp_parser_omp_for_loop): Add a new argument to
- cp_parser_attributes_opt.
- * c-decl.c (undeclared_variable): Suppress errors for lock attributes.
- * common.opt: Add a new flag 'Wthread-unsupported-lock-name'.
- * c-common.c (supported_lock_expression): New function.
- (get_lock_decl): Handle unsupported lock expressions.
- (handle_guarded_by_attribute): Handle unsupported lock expressions and
- downgrade the attributes.
- (populate_acquired_after_map): Likewise.
- (handle_acquired_order_attribute): Remove delay binding code.
- (check_lock_unlock_attr_args): Use type_num_arguments for the number of
- function parameters. And handle unsupported lock arguments.
- (handle_lock_attribute): Set lockable_type to NULL if the decl_context
- is not a type.
- (handle_unlock_attribute): Likewise.
- (handle_lock_returned_attribute): Handle unsupported lock expressions.
- * c-common.h: Remove declaration of process_unbound_attribute_args.
- * tree-threadsafe-analyze.c (gimple_call_tab): New static variable.
- (call_gs_hash): New function.
- (call_gs_eq): Likewise.
- (build_fully_qualified_lock): Add a new argument to get_canonical_expr.
- Call get_canonical_expr instead of building a component_ref directly.
- (get_canonical_expr): Add a new parameter 'base_obj' for a field decl.
- Handle lockable objects wrapped in smart pointers and gimple call
- statements. Handle array_ref with non-constant indices.
- (leftmost_operand_is_field_decl): New function.
- (lock_set_contains): Handle universal lock (i.e. error_mark_node).
- (check_lock_required): Add a new argument to get_canonical_expr and
- lock_set_contains. Use fully-qualified lock names. Handle unsupported
- lock expressions.
- (add_lock_to_lockset): New function.
- (handle_lock_primitive_attrs): Handle universal lock. Add a new
- argument to get_canonical_expr. Check if the decl_context of the
- function is a type.
- (handle_unlock_primitive_attr): Add a new argument to
- get_canonical_expr. Use lock_set_contains instead of
- pointer_set_contains.
- (process_function_attrs): Handle universal lock. Add a new argument to
- get_canonical_expr and lock_set_contains.
- (process_guarded_by_attrs): Refactor the code by calling
- check_lock_required.
- (analyze_expr): Fix a bug in handling indirect references. Handle
- universal lock.
- (warn_unreleased_locks): Handle universal lock.
- (analyze_stmt_r): Fix a bug in handling indirect references.
- (execute_threadsafe_analyze): Handle the case where exit block may not
- be reachable from the entry.
- * c-parser.c (c_parser_declaration_or_fndef): Allow lock attributes on
- function definitions. Add support for suppressing errors for lock
- attributes.
-
-2008-09-02 Le-Chun Wu <lcwu@google.com>
-
- * tree-threadsafe-analyze.c (get_lock_returned_by_call): New function
- to return the lock specified in the lock_returned attribute.
- (get_lockable_decl): Modified to use the GIMPLE tuple IR.
- (get_canonical_expr): Ditto.
- (get_actual_argument_from_position): Ditto.
- (handle_lock_primitive_attrs): Ditto.
- (handle_unlock_primitive_attr): Ditto.
- (process_function_attrs): Ditto.
- (handle_call_gs): New function that handles gimple call statements. It
- replaces the old function handle_call_expr.
- (analyze_expr): Modified to use the GIMPLE tuple IR. Added a new
- parameter "is_indirect_ref" to support "point_to_guarded_by" attribute
- in class members.
- (get_trylock_info): Modified to use the GIMPLE tuple IR.
- (handle_cond_gs): New function to handle gimple condition statements.
- It replaces the old function is_condition_fed_by_trylock.
- (analyze_stmt_r): New helper function for walk_gimple_stmt() that is
- called on each gimple statement.
- (analyze_op_r): New helper function for walk_gimple_stmt() that is
- called on each operand of a visited gimple statement.
- (execute_threadsafe_analyze): Modified to use the GIMPLE tuple IR.
-
-2008-08-05 Le-Chun Wu <lcwu@google.com>
-
- * c-common.c (handle_guarded_by_attribute): Add comments to explain
- why we cannot identify static class data members at this point of
- compilation.
- (check_lock_unlock_attr_args, handle_lock_returned_attribute): Use the
- DECL_CONTEXT of a function decl node to determine whether the decl is
- a class member.
- * tree-threadsafe-analyze.c (build_fully_qualified_lock): New function
- to build a fully-qualified name of a lock that is a class member.
- (get_canonical_expr): Refactor the code to use
- build_fully_qualified_lock.
- (handle_lock_primitive_attrs): Call build_fully_qualified_lock.
- (handle_unlock_primitive_attr): Call build_fully_qualified_lock.
-
-2008-07-02 Le-Chun Wu <lcwu@google.com>
-
- * tree-threadsafe-analyze.c (dump_expr_tree): Fix -Wcast-qual and/or
- -Wc++-compat warnings.
- (match_locks): Ditto.
- (check_acquired_after): Ditto.
- (check_locking_order): Ditto.
- (handle_unlock_primitive_attr): Ditto.
- (warn_locally_unreleased_locks): Ditto.
- (warn_unreleased_locks): Ditto.
- * gcc/tree-threadsafe-analyze.h: Fix -Wcast-qual and/or -Wc++-compat
- warnings.
-
-2008-06-17 Le-Chun Wu <lcwu@google.com>
-
- * tree-pretty-print.c (dump_generic_node): Pass 'flags' to the
- print_call_name call.
- (print_call_name): Add a new parameter 'flags' and pass it to the
- dump_generic_node calls.
- * tree-pass.h: Add a new pass declaration.
- * pointer-set.c (pointer_set_copy): New function.
- (pointer_set_delete): Likewise.
- (pointer_set_intersection_complement): Likewise.
- (pointer_set_union_inplace): Likewise.
- (pointer_set_cardinality): Likewise.
- * pointer-set.h: Add declarations of new functions.
- * toplev.c: Include tree-threadsafe-analyze.h.
- (compile_file): Clean up the global data structures used by the thread
- safety analysis.
- * c-cppbuiltin.c (c_cpp_builtins): Define a new macro
- '__SUPPORT_TS_ANNOTATION__'.
- * gimplify.c (lookup_tmp_var): Copy thread safety attributes to tmp
- variable and save the original variable name.
- * common.opt: Add new warning flags -Wthread-safety,
- -Wthread-unguarded-var, -Wthread-unguarded-func,
- -Wthread-mismatched-lock-order, -Wthread-mismatched-lock-acq-rel,
- -Wthread-reentrant-lock.
- * c-common.c: Include tree-threadsafe-analyze.h and define new thread
- safety attributes.
- (unbound_attribute_args): New variable for delaying process of thread
- safety attributes in class definition.
- (unprocessed_acq_after_args): Likewise.
- (unprocessed_acq_before_args): Likewise.
- (handle_lockable_attribute): New attribute handler.
- (handle_guarded_by_attribute): Likewise.
- (handle_point_to_guarded_by_attribute): Likewise.
- (handle_guarded_attribute): Likewise.
- (handle_point_to_guarded_attribute): Likewise.
- (handle_acquired_order_attribute): Likewise.
- (handle_lock_attribute): Likewise.
- (handle_unlock_attribute): Likewise.
- (handle_locks_required_excluded_attribute): Likewise.
- (handle_lock_returned_attribute): Likewise.
- (handle_no_thread_safety_analysis_attribute): Likewise.
- (get_lock_decl): New helper function.
- (populate_acquired_after_map): Likewise.
- (is_lock_formal_parameter): Likewise.
- (check_lock_unlock_attr_args): Likewise.
- (process_unbound_attribute_args): New function to process thread safety
- attributes inside a class definition.
- * c-common.h: Add declaration for process_unbound_attribute_args.
- * Makefile.in (OBJS-common): Add tree-threadsafe-analyze.o.
- * passes.c (init_optimization_passes): Add a new pass.
- * tree-threadsafe-analyze.c: New file.
- * tree-threadsafe-analyze.h: New file.
- * c-parser.c (c_parser_attributes): Replace the original code that
- handles the argument list with a call to c_parser_attr_arg_list.
- (c_parser_attr_arg_list): New function to parse the attribute argument
- list.