Merge pull request #24151 from veblush/stack-debug
Add stack-debugging features using Abseilpull/24207/head
Esun Kim
5 years ago
committed by
GitHub
commit
c516eb7c09
8 changed files with 196 additions and 1 deletions
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/*
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* |
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* Copyright 2020 the gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#include <grpc/support/port_platform.h> |
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#include "test/core/util/examine_stack.h" |
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#include <cstdio> |
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#include <string> |
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#include "absl/debugging/stacktrace.h" |
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#include "absl/debugging/symbolize.h" |
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namespace { |
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static constexpr int kPrintfPointerFieldWidth = 2 + 2 * sizeof(void*); |
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static void DumpPCAndFrameSizeAndSymbol(void (*writerfn)(const char*, void*), |
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void* writerfn_arg, void* pc, |
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void* symbolize_pc, int framesize, |
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const char* const prefix) { |
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char tmp[1024]; |
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const char* symbol = "(unknown)"; |
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if (absl::Symbolize(symbolize_pc, tmp, sizeof(tmp))) { |
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symbol = tmp; |
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} |
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char buf[1024]; |
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if (framesize <= 0) { |
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snprintf(buf, sizeof(buf), "%s@ %*p (unknown) %s\n", prefix, |
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kPrintfPointerFieldWidth, pc, symbol); |
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} else { |
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snprintf(buf, sizeof(buf), "%s@ %*p %9d %s\n", prefix, |
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kPrintfPointerFieldWidth, pc, framesize, symbol); |
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} |
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writerfn(buf, writerfn_arg); |
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} |
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static void DumpPCAndFrameSize(void (*writerfn)(const char*, void*), |
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void* writerfn_arg, void* pc, int framesize, |
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const char* const prefix) { |
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char buf[100]; |
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if (framesize <= 0) { |
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snprintf(buf, sizeof(buf), "%s@ %*p (unknown)\n", prefix, |
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kPrintfPointerFieldWidth, pc); |
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} else { |
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snprintf(buf, sizeof(buf), "%s@ %*p %9d\n", prefix, |
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kPrintfPointerFieldWidth, pc, framesize); |
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} |
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writerfn(buf, writerfn_arg); |
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} |
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static void DumpStackTrace(void* const stack[], int frame_sizes[], int depth, |
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bool symbolize_stacktrace, |
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void (*writerfn)(const char*, void*), |
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void* writerfn_arg) { |
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for (int i = 0; i < depth; i++) { |
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if (symbolize_stacktrace) { |
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DumpPCAndFrameSizeAndSymbol(writerfn, writerfn_arg, stack[i], |
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reinterpret_cast<char*>(stack[i]) - 1, |
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frame_sizes[i], " "); |
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} else { |
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DumpPCAndFrameSize(writerfn, writerfn_arg, stack[i], frame_sizes[i], |
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" "); |
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} |
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} |
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} |
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static void DebugWriteToString(const char* data, void* str) { |
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reinterpret_cast<std::string*>(str)->append(data); |
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} |
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} // namespace
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namespace grpc_core { |
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std::string CurrentStackTrace() { |
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std::string result = "Stack trace:\n"; |
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constexpr int kNumStackFrames = 32; |
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void* stack[kNumStackFrames]; |
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int frame_sizes[kNumStackFrames]; |
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int depth = absl::GetStackFrames(stack, frame_sizes, kNumStackFrames, 1); |
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DumpStackTrace(stack, frame_sizes, depth, true, DebugWriteToString, |
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(void*)&result); |
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return result; |
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} |
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} // namespace grpc_core
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@ -0,0 +1,34 @@ |
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/*
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* |
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* Copyright 2020 the gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#ifndef GRPC_TEST_CORE_UTIL_EXAMINE_STACK_H |
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#define GRPC_TEST_CORE_UTIL_EXAMINE_STACK_H |
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#include <grpc/support/port_platform.h> |
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#include <string> |
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namespace grpc_core { |
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// Return the current stack trace as a string (on multiple lines, beginning with
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// "Stack trace:\n")
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std::string CurrentStackTrace(); |
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} // namespace grpc_core
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#endif /* GRPC_TEST_CORE_UTIL_EXAMINE_STACK_H */ |
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