| // |
| // |
| // Copyright 2020 gRPC 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. |
| // |
| // |
| |
| #include "src/core/lib/gprpp/examine_stack.h" |
| |
| #include "absl/debugging/stacktrace.h" |
| #include "absl/debugging/symbolize.h" |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| |
| #include <grpc/support/log.h> |
| |
| namespace { |
| |
| std::string SimpleCurrentStackTraceProvider() { return "stacktrace"; } |
| |
| std::string AbseilCurrentStackTraceProvider() { |
| std::string result = "Stack trace:\n"; |
| constexpr int kNumStackFrames = 10; |
| void* stack[kNumStackFrames]; |
| int frame_sizes[kNumStackFrames]; |
| int depth = absl::GetStackFrames(stack, frame_sizes, kNumStackFrames, 1); |
| for (int i = 0; i < depth; i++) { |
| char tmp[1024]; |
| const char* symbol = "(unknown)"; |
| if (absl::Symbolize(stack[i], tmp, sizeof(tmp))) { |
| symbol = tmp; |
| } |
| result += symbol; |
| result += +"\n"; |
| } |
| return result; |
| } |
| |
| } // namespace |
| |
| TEST(ExamineStackTest, NullStackProvider) { |
| grpc_core::SetCurrentStackTraceProvider(nullptr); |
| EXPECT_EQ(grpc_core::GetCurrentStackTraceProvider(), nullptr); |
| EXPECT_EQ(grpc_core::GetCurrentStackTrace(), absl::nullopt); |
| } |
| |
| TEST(ExamineStackTest, SimpleStackProvider) { |
| grpc_core::SetCurrentStackTraceProvider(&SimpleCurrentStackTraceProvider); |
| EXPECT_NE(grpc_core::GetCurrentStackTraceProvider(), nullptr); |
| EXPECT_EQ(grpc_core::GetCurrentStackTrace(), "stacktrace"); |
| } |
| |
| TEST(ExamineStackTest, AbseilStackProvider) { |
| grpc_core::SetCurrentStackTraceProvider(&AbseilCurrentStackTraceProvider); |
| EXPECT_NE(grpc_core::GetCurrentStackTraceProvider(), nullptr); |
| const absl::optional<std::string> stack_trace = |
| grpc_core::GetCurrentStackTrace(); |
| EXPECT_NE(stack_trace, absl::nullopt); |
| gpr_log(GPR_INFO, "stack_trace=%s", stack_trace->c_str()); |
| #if !defined(NDEBUG) && !defined(GPR_MUSL_LIBC_COMPAT) |
| // Expect to see some gtest signature on the stack (this used to be |
| // GetCurrentStackTrace, but some operating systems have trouble with the leaf |
| // function). |
| EXPECT_THAT(*stack_trace, ::testing::HasSubstr("testing::")); |
| #endif |
| } |
| |
| int main(int argc, char** argv) { |
| absl::InitializeSymbolizer(argv[0]); |
| ::testing::InitGoogleTest(&argc, argv); |
| int ret = RUN_ALL_TESTS(); |
| return ret; |
| } |