1 //
2 // Copyright 2018 The Abseil Authors.
3 //
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
7 //
8 // https://www.apache.org/licenses/LICENSE-2.0
9 //
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.
15
16 #include "absl/debugging/internal/stack_consumption.h"
17
18 #ifdef ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION
19
20 #include <string.h>
21
22 #include "gtest/gtest.h"
23 #include "absl/base/internal/raw_logging.h"
24
25 namespace absl {
26 ABSL_NAMESPACE_BEGIN
27 namespace debugging_internal {
28 namespace {
29
SimpleSignalHandler(int signo)30 static void SimpleSignalHandler(int signo) {
31 char buf[100];
32 memset(buf, 'a', sizeof(buf));
33
34 // Never true, but prevents compiler from optimizing buf out.
35 if (signo == 0) {
36 ABSL_RAW_LOG(INFO, "%p", static_cast<void*>(buf));
37 }
38 }
39
TEST(SignalHandlerStackConsumptionTest,MeasuresStackConsumption)40 TEST(SignalHandlerStackConsumptionTest, MeasuresStackConsumption) {
41 // Our handler should consume reasonable number of bytes.
42 EXPECT_GE(GetSignalHandlerStackConsumption(SimpleSignalHandler), 100);
43 }
44
45 } // namespace
46 } // namespace debugging_internal
47 ABSL_NAMESPACE_END
48 } // namespace absl
49
50 #endif // ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION
51