b795d6fa4b
Unify all our "noinline" variants to the current most common one, not least because the new [[noinline]] syntax is fussier about where it goes. Test: treehugger Change-Id: Icfcb75c9d687f0f05c19f66ee778fd8962519436
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
/*
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* Copyright (C) 2022 The Android Open Source Project
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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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#include <unistd.h>
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#include <thread>
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#include <android-base/threads.h>
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#include <gtest/gtest.h>
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#include <utils/CallStack.h>
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__attribute__((__noinline__)) extern "C" void CurrentCaller(android::String8& backtrace) {
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android::CallStack cs;
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cs.update();
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backtrace = cs.toString();
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}
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TEST(CallStackTest, current_backtrace) {
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android::String8 backtrace;
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CurrentCaller(backtrace);
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ASSERT_NE(-1, backtrace.find("(CurrentCaller")) << "Full backtrace:\n" << backtrace;
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}
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__attribute__((__noinline__)) extern "C" void ThreadBusyWait(std::atomic<pid_t>* tid,
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volatile bool* done) {
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*tid = android::base::GetThreadId();
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while (!*done) {
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}
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}
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TEST(CallStackTest, thread_backtrace) {
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// Use a volatile to avoid any problems unwinding since sometimes
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// accessing a std::atomic does not include unwind data at every
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// instruction and leads to failed unwinds.
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volatile bool done = false;
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std::atomic<pid_t> tid = -1;
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std::thread thread([&tid, &done]() { ThreadBusyWait(&tid, &done); });
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while (tid == -1) {
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}
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android::CallStack cs;
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cs.update(0, tid);
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done = true;
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thread.join();
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ASSERT_NE(-1, cs.toString().find("(ThreadBusyWait")) << "Full backtrace:\n" << cs.toString();
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}
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