stack_consumption_test.cc (1451B)
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/log/log.h" 24 25 namespace absl { 26 ABSL_NAMESPACE_BEGIN 27 namespace debugging_internal { 28 namespace { 29 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 LOG(INFO) << static_cast<void*>(buf); 37 } 38 } 39 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