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99 lines
3.1 KiB
99 lines
3.1 KiB
4 months ago
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//===-- sanitizer_procmaps.h ------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is shared between AddressSanitizer and ThreadSanitizer.
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//
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// Information about the process mappings.
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//===----------------------------------------------------------------------===//
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#ifndef SANITIZER_PROCMAPS_H
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#define SANITIZER_PROCMAPS_H
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#include "sanitizer_common.h"
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#include "sanitizer_internal_defs.h"
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#include "sanitizer_mutex.h"
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namespace __sanitizer {
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#if SANITIZER_FREEBSD || SANITIZER_LINUX
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struct ProcSelfMapsBuff {
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char *data;
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uptr mmaped_size;
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uptr len;
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};
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// Reads process memory map in an OS-specific way.
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void ReadProcMaps(ProcSelfMapsBuff *proc_maps);
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#endif // SANITIZER_FREEBSD || SANITIZER_LINUX
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class MemoryMappingLayout {
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public:
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explicit MemoryMappingLayout(bool cache_enabled);
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~MemoryMappingLayout();
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bool Next(uptr *start, uptr *end, uptr *offset,
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char filename[], uptr filename_size, uptr *protection);
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void Reset();
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// In some cases, e.g. when running under a sandbox on Linux, ASan is unable
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// to obtain the memory mappings. It should fall back to pre-cached data
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// instead of aborting.
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static void CacheMemoryMappings();
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// Adds all mapped objects into a vector.
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void DumpListOfModules(InternalMmapVector<LoadedModule> *modules);
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// Memory protection masks.
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static const uptr kProtectionRead = 1;
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static const uptr kProtectionWrite = 2;
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static const uptr kProtectionExecute = 4;
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static const uptr kProtectionShared = 8;
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private:
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void LoadFromCache();
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// FIXME: Hide implementation details for different platforms in
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// platform-specific files.
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# if SANITIZER_FREEBSD || SANITIZER_LINUX
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ProcSelfMapsBuff proc_self_maps_;
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const char *current_;
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// Static mappings cache.
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static ProcSelfMapsBuff cached_proc_self_maps_;
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static StaticSpinMutex cache_lock_; // protects cached_proc_self_maps_.
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# elif SANITIZER_MAC
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template<u32 kLCSegment, typename SegmentCommand>
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bool NextSegmentLoad(uptr *start, uptr *end, uptr *offset,
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char filename[], uptr filename_size,
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uptr *protection);
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int current_image_;
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u32 current_magic_;
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u32 current_filetype_;
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int current_load_cmd_count_;
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char *current_load_cmd_addr_;
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# endif
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};
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typedef void (*fill_profile_f)(uptr start, uptr rss, bool file,
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/*out*/uptr *stats, uptr stats_size);
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// Parse the contents of /proc/self/smaps and generate a memory profile.
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// |cb| is a tool-specific callback that fills the |stats| array containing
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// |stats_size| elements.
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void GetMemoryProfile(fill_profile_f cb, uptr *stats, uptr stats_size);
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// Returns code range for the specified module.
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bool GetCodeRangeForFile(const char *module, uptr *start, uptr *end);
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bool IsDecimal(char c);
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uptr ParseDecimal(const char **p);
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bool IsHex(char c);
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uptr ParseHex(const char **p);
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} // namespace __sanitizer
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#endif // SANITIZER_PROCMAPS_H
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