1 //===-- sanitizer_procmaps.h ------------------------------------*- C++ -*-===//
3 // This file is distributed under the University of Illinois Open Source
4 // License. See LICENSE.TXT for details.
6 //===----------------------------------------------------------------------===//
8 // This file is shared between AddressSanitizer and ThreadSanitizer.
10 // Information about the process mappings.
11 //===----------------------------------------------------------------------===//
12 #ifndef SANITIZER_PROCMAPS_H
13 #define SANITIZER_PROCMAPS_H
15 #include "sanitizer_common.h"
16 #include "sanitizer_internal_defs.h"
17 #include "sanitizer_mutex.h"
19 namespace __sanitizer
{
21 #if SANITIZER_FREEBSD || SANITIZER_LINUX
22 struct ProcSelfMapsBuff
{
27 #endif // SANITIZER_FREEBSD || SANITIZER_LINUX
29 class MemoryMappingLayout
{
31 explicit MemoryMappingLayout(bool cache_enabled
);
32 ~MemoryMappingLayout();
33 bool Next(uptr
*start
, uptr
*end
, uptr
*offset
,
34 char filename
[], uptr filename_size
, uptr
*protection
);
36 // In some cases, e.g. when running under a sandbox on Linux, ASan is unable
37 // to obtain the memory mappings. It should fall back to pre-cached data
38 // instead of aborting.
39 static void CacheMemoryMappings();
41 // Stores the list of mapped objects into an array.
42 uptr
DumpListOfModules(LoadedModule
*modules
, uptr max_modules
,
43 string_predicate_t filter
);
45 // Memory protection masks.
46 static const uptr kProtectionRead
= 1;
47 static const uptr kProtectionWrite
= 2;
48 static const uptr kProtectionExecute
= 4;
49 static const uptr kProtectionShared
= 8;
54 // FIXME: Hide implementation details for different platforms in
55 // platform-specific files.
56 # if SANITIZER_FREEBSD || SANITIZER_LINUX
57 ProcSelfMapsBuff proc_self_maps_
;
60 // Static mappings cache.
61 static ProcSelfMapsBuff cached_proc_self_maps_
;
62 static StaticSpinMutex cache_lock_
; // protects cached_proc_self_maps_.
64 template<u32 kLCSegment
, typename SegmentCommand
>
65 bool NextSegmentLoad(uptr
*start
, uptr
*end
, uptr
*offset
,
66 char filename
[], uptr filename_size
,
70 u32 current_filetype_
;
71 int current_load_cmd_count_
;
72 char *current_load_cmd_addr_
;
76 typedef void (*fill_profile_f
)(uptr start
, uptr rss
, bool file
,
77 /*out*/uptr
*stats
, uptr stats_size
);
79 // Parse the contents of /proc/self/smaps and generate a memory profile.
80 // |cb| is a tool-specific callback that fills the |stats| array containing
81 // |stats_size| elements.
82 void GetMemoryProfile(fill_profile_f cb
, uptr
*stats
, uptr stats_size
);
84 // Returns code range for the specified module.
85 bool GetCodeRangeForFile(const char *module
, uptr
*start
, uptr
*end
);
87 } // namespace __sanitizer
89 #endif // SANITIZER_PROCMAPS_H