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58 lines
1.8 KiB
58 lines
1.8 KiB
/* |
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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_CURRENT_H |
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#define _LIBBACKTRACE_BACKTRACE_CURRENT_H |
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#include <stdint.h> |
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#include <sys/types.h> |
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#include <ucontext.h> |
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#include <backtrace/Backtrace.h> |
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// The signal used to cause a thread to dump the stack. |
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#if defined(__GLIBC__) |
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// In order to run the backtrace_tests on the host, we can't use |
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// the internal real time signals used by GLIBC. To avoid this, |
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// use SIGRTMIN for the signal to dump the stack. |
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#define THREAD_SIGNAL SIGRTMIN |
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#else |
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#define THREAD_SIGNAL (__SIGRTMIN+1) |
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#endif |
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class BacktraceMap; |
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class BacktraceCurrent : public Backtrace { |
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public: |
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BacktraceCurrent(pid_t pid, pid_t tid, BacktraceMap* map) : Backtrace(pid, tid, map) {} |
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virtual ~BacktraceCurrent() {} |
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size_t Read(uintptr_t addr, uint8_t* buffer, size_t bytes) override; |
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bool ReadWord(uintptr_t ptr, word_t* out_value) override; |
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bool Unwind(size_t num_ignore_frames, ucontext_t* ucontext) override; |
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protected: |
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bool DiscardFrame(const backtrace_frame_data_t& frame); |
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private: |
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bool UnwindThread(size_t num_ignore_frames); |
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virtual bool UnwindFromContext(size_t num_ignore_frames, ucontext_t* ucontext) = 0; |
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}; |
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#endif // _LIBBACKTRACE_BACKTRACE_CURRENT_H
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