From bf7fc9986e20f664958fc227547fd8d2fdcf863e Mon Sep 17 00:00:00 2001 From: Abseil Team Date: Mon, 5 Feb 2018 05:38:45 -0800 Subject: Changes imported from Abseil "staging" branch: - b00fb48c537d494ab775bc6701acfb8e100d8b88 Add a test utility for measuring stack consumption. by Derek Mauro GitOrigin-RevId: b00fb48c537d494ab775bc6701acfb8e100d8b88 Change-Id: I00466a6d6c14911c12d34f62a4144925748e3f61 --- absl/debugging/internal/stack_consumption.h | 45 +++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 absl/debugging/internal/stack_consumption.h (limited to 'absl/debugging/internal/stack_consumption.h') diff --git a/absl/debugging/internal/stack_consumption.h b/absl/debugging/internal/stack_consumption.h new file mode 100644 index 000000000000..5aa1a109b657 --- /dev/null +++ b/absl/debugging/internal/stack_consumption.h @@ -0,0 +1,45 @@ +// +// Copyright 2018 The Abseil Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Helper function for measuring stack consumption of signal handlers. + +#ifndef ABSL_DEBUGGING_INTERNAL_STACK_CONSUMPTION_H_ +#define ABSL_DEBUGGING_INTERNAL_STACK_CONSUMPTION_H_ + +// The code in this module is not portable. +// Use this feature test macro to detect its availability. +#ifdef ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION +#error ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION cannot be set directly +#elif !defined(__APPLE__) && \ + (defined(__i386__) || defined(__x86_64__) || defined(__ppc__)) +#define ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION 1 + +namespace absl { +namespace debugging_internal { + +// Returns the stack consumption in bytes for the code exercised by +// signal_handler. To measure stack consumption, signal_handler is registered +// as a signal handler, so the code that it exercises must be async-signal +// safe. The argument of signal_handler is an implementation detail of signal +// handlers and should ignored by the code for signal_handler. Use global +// variables to pass information between your test code and signal_handler. +int GetSignalHandlerStackConsumption(void (*signal_handler)(int)); + +} // namespace debugging_internal +} // namespace absl + +#endif // ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION + +#endif // ABSL_DEBUGGING_INTERNAL_STACK_CONSUMPTION_H_ -- cgit 1.4.1