12385e3ad0
The backtrace structure used to include a pointer to a backtrace_map_t that represented the map data for a particular pc. This introduced a race condition where the pointer could be discarded, but the backtrace structure still contained a pointer to garbage memory. Now all of the map information is right in the structure. Bug: 19028453 Change-Id: If7088a73f3c6bf1f3bc8cdd2bb4b62e7cab831c0
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
/*
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* Copyright (C) 2014 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_UNWIND_MAP_H
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#define _LIBBACKTRACE_UNWIND_MAP_H
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#include <backtrace/BacktraceMap.h>
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// The unw_map_cursor_t structure is different depending on whether it is
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// the local or remote version. In order to get the correct version, include
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// libunwind.h first then this header.
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class UnwindMap : public BacktraceMap {
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public:
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UnwindMap(pid_t pid);
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virtual ~UnwindMap();
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virtual bool Build();
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unw_map_cursor_t* GetMapCursor() { return &map_cursor_; }
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protected:
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virtual bool GenerateMap();
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unw_map_cursor_t map_cursor_;
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};
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class UnwindMapLocal : public UnwindMap {
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public:
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UnwindMapLocal();
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virtual ~UnwindMapLocal();
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virtual bool Build();
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virtual void FillIn(uintptr_t addr, backtrace_map_t* map);
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protected:
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virtual bool GenerateMap();
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bool map_created_;
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};
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#endif // _LIBBACKTRACE_UNWIND_MAP_H
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