blob: 9b0c969fe0d2ada8add1643ad63fc4c219a676d8 [file] [log] [blame]
// Copyright 2022 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "quiche_platform_impl/quiche_stack_trace_impl.h"
#include <vector>
#include "absl/base/macros.h"
#include "absl/debugging/stacktrace.h"
#include "absl/debugging/symbolize.h"
#include "absl/strings/str_format.h"
#include "absl/strings/string_view.h"
namespace quiche {
namespace {
constexpr int kMaxStackSize = 4096;
constexpr int kMaxSymbolSize = 1024;
constexpr absl::string_view kUnknownSymbol = "(unknown)";
} // namespace
std::string QuicheStackTraceImpl() {
std::vector<void*> stacktrace(kMaxStackSize, nullptr);
int num_frames = absl::GetStackTrace(stacktrace.data(), stacktrace.size(),
/*skip_count=*/0);
if (num_frames <= 0) {
return "";
}
stacktrace.resize(num_frames);
std::string formatted_trace = "Stack trace:\n";
for (void* function : stacktrace) {
char symbol_name[kMaxSymbolSize];
bool success = absl::Symbolize(function, symbol_name, sizeof(symbol_name));
absl::StrAppendFormat(
&formatted_trace, " %p %s\n", function,
success ? absl::string_view(symbol_name) : kUnknownSymbol);
}
return formatted_trace;
}
bool QuicheShouldRunStackTraceTestImpl() {
void* unused[4]; // An arbitrary small number of stack frames to trace.
int stack_traces_found =
absl::GetStackTrace(unused, ABSL_ARRAYSIZE(unused), /*skip_count=*/0);
// absl::GetStackTrace() always returns 0 if the current platform is
// unsupported.
return stack_traces_found > 0;
}
} // namespace quiche