2 // Copyright 2018 The Abseil Authors.
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
8 // https://www.apache.org/licenses/LICENSE-2.0
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
16 // Helper function for measuring stack consumption of signal handlers.
18 #ifndef ABSL_DEBUGGING_INTERNAL_STACK_CONSUMPTION_H_
19 #define ABSL_DEBUGGING_INTERNAL_STACK_CONSUMPTION_H_
21 // The code in this module is not portable.
22 // Use this feature test macro to detect its availability.
23 #ifdef ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION
24 #error ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION cannot be set directly
25 #elif !defined(__APPLE__) && !defined(_WIN32) && \
26 (defined(__i386__) || defined(__x86_64__) || defined(__ppc__))
27 #define ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION 1
30 namespace debugging_internal {
32 // Returns the stack consumption in bytes for the code exercised by
33 // signal_handler. To measure stack consumption, signal_handler is registered
34 // as a signal handler, so the code that it exercises must be async-signal
35 // safe. The argument of signal_handler is an implementation detail of signal
36 // handlers and should ignored by the code for signal_handler. Use global
37 // variables to pass information between your test code and signal_handler.
38 int GetSignalHandlerStackConsumption(void (*signal_handler)(int));
40 } // namespace debugging_internal
43 #endif // ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION
45 #endif // ABSL_DEBUGGING_INTERNAL_STACK_CONSUMPTION_H_