8ed46278be
Included in minor fix ups is the addition of a warning macro to replace all of the ALOGW calls. Fix a race where multiple threads could be attempting to unwind the threads of the current process at the same time. Bug: 8410085 Change-Id: I02a65dc778dde690e5f95fc8ff069a32d0832fd1
66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
/*
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* Copyright (C) 2013 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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#ifndef _LIBBACKTRACE_BACKTRACE_H
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#define _LIBBACKTRACE_BACKTRACE_H
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#include <backtrace/Backtrace.h>
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#include <sys/types.h>
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// Macro to log the function name along with the warning message.
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#define BACK_LOGW(format, ...) \
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ALOGW("%s: " format, __PRETTY_FUNCTION__, ##__VA_ARGS__)
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class BacktraceImpl {
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public:
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virtual ~BacktraceImpl() { }
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virtual bool Unwind(size_t num_ignore_frames) = 0;
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// The name returned is not demangled, Backtrace::GetFunctionName()
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// takes care of demangling the name.
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virtual std::string GetFunctionNameRaw(uintptr_t pc, uintptr_t* offset) = 0;
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void SetParent(Backtrace* backtrace) { backtrace_obj_ = backtrace; }
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protected:
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backtrace_t* GetBacktraceData();
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Backtrace* backtrace_obj_;
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};
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class BacktraceCurrent : public Backtrace {
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public:
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BacktraceCurrent(BacktraceImpl* impl);
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virtual ~BacktraceCurrent();
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bool ReadWord(uintptr_t ptr, uint32_t* out_value);
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};
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class BacktracePtrace : public Backtrace {
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public:
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BacktracePtrace(BacktraceImpl* impl, pid_t pid, pid_t tid);
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virtual ~BacktracePtrace();
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bool ReadWord(uintptr_t ptr, uint32_t* out_value);
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};
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Backtrace* CreateCurrentObj();
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Backtrace* CreatePtraceObj(pid_t pid, pid_t tid);
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Backtrace* CreateThreadObj(pid_t tid);
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#endif // _LIBBACKTRACE_BACKTRACE_H
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