7937a36c8e
In order to support the offline unwinding properly, get rid of the usage of non-fixed type uintptr_t from all API calls. In addition, completely remove the old local and remote unwinding code that used libunwind. The next step will be to move the offline unwinding to the new unwinder. Bug: 65682279 Test: Ran unit tests for libbacktrace/debuggerd. Test: Ran debuggerd -b on a few arm and arm64 processes. Test: Ran crasher and crasher64 and verified tombstones look correct. Change-Id: Ib0c6cee3ad6785a102b74908a3d8e5e93e5c6b33
58 lines
1.8 KiB
C++
58 lines
1.8 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_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(uint64_t addr, uint8_t* buffer, size_t bytes) override;
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bool ReadWord(uint64_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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