Alexey Samsonov | 9edf750 | 2012-06-06 06:47:26 +0000 | [diff] [blame] | 1 | //===-- sanitizer_common.h --------------------------------------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 10 | // This file is shared between run-time libraries of sanitizers. |
| 11 | // |
Alexey Samsonov | 230c3be | 2012-06-06 09:26:25 +0000 | [diff] [blame] | 12 | // It declares common functions and classes that are used in both runtimes. |
Alexey Samsonov | 9edf750 | 2012-06-06 06:47:26 +0000 | [diff] [blame] | 13 | // Implementation of some functions are provided in sanitizer_common, while |
| 14 | // others must be defined by run-time library itself. |
| 15 | //===----------------------------------------------------------------------===// |
| 16 | #ifndef SANITIZER_COMMON_H |
| 17 | #define SANITIZER_COMMON_H |
| 18 | |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 19 | #include "sanitizer_flags.h" |
| 20 | #include "sanitizer_interface_internal.h" |
Alexey Samsonov | 9edf750 | 2012-06-06 06:47:26 +0000 | [diff] [blame] | 21 | #include "sanitizer_internal_defs.h" |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 22 | #include "sanitizer_libc.h" |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 23 | #include "sanitizer_list.h" |
Alexey Samsonov | 7ed46ff | 2013-04-05 07:30:29 +0000 | [diff] [blame] | 24 | #include "sanitizer_mutex.h" |
Alexey Samsonov | 9edf750 | 2012-06-06 06:47:26 +0000 | [diff] [blame] | 25 | |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 26 | #ifdef _MSC_VER |
| 27 | extern "C" void _ReadWriteBarrier(); |
| 28 | #pragma intrinsic(_ReadWriteBarrier) |
| 29 | #endif |
| 30 | |
Alexey Samsonov | 9edf750 | 2012-06-06 06:47:26 +0000 | [diff] [blame] | 31 | namespace __sanitizer { |
Kostya Serebryany | 2673fd8 | 2013-02-06 12:36:49 +0000 | [diff] [blame] | 32 | struct StackTrace; |
Pirama Arumuga Nainar | 7c91505 | 2015-04-08 08:58:29 -0700 | [diff] [blame] | 33 | struct AddressInfo; |
Alexey Samsonov | 9edf750 | 2012-06-06 06:47:26 +0000 | [diff] [blame] | 34 | |
Alexey Samsonov | 230c3be | 2012-06-06 09:26:25 +0000 | [diff] [blame] | 35 | // Constants. |
Kostya Serebryany | 5af39e5 | 2012-11-21 12:38:58 +0000 | [diff] [blame] | 36 | const uptr kWordSize = SANITIZER_WORDSIZE / 8; |
Alexey Samsonov | 230c3be | 2012-06-06 09:26:25 +0000 | [diff] [blame] | 37 | const uptr kWordSizeInBits = 8 * kWordSize; |
Kostya Serebryany | e89f184 | 2012-11-24 05:03:11 +0000 | [diff] [blame] | 38 | |
Stephen Hines | 6a211c5 | 2014-07-21 00:49:56 -0700 | [diff] [blame] | 39 | #if defined(__powerpc__) || defined(__powerpc64__) |
| 40 | const uptr kCacheLineSize = 128; |
| 41 | #else |
| 42 | const uptr kCacheLineSize = 64; |
| 43 | #endif |
Alexey Samsonov | 230c3be | 2012-06-06 09:26:25 +0000 | [diff] [blame] | 44 | |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 45 | const uptr kMaxPathLength = 4096; |
Alexey Samsonov | d64bcf4 | 2013-06-11 08:13:36 +0000 | [diff] [blame] | 46 | |
Pirama Arumuga Nainar | 259f706 | 2015-05-06 11:49:53 -0700 | [diff] [blame] | 47 | // 16K loaded modules should be enough for everyone. |
| 48 | static const uptr kMaxNumberOfModules = 1 << 14; |
| 49 | |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 50 | const uptr kMaxThreadStackSize = 1 << 30; // 1Gb |
| 51 | |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 52 | static const uptr kErrorMessageBufferSize = 1 << 16; |
| 53 | |
| 54 | // Denotes fake PC values that come from JIT/JAVA/etc. |
| 55 | // For such PC values __tsan_symbolize_external() will be called. |
| 56 | const u64 kExternalPCBit = 1ULL << 60; |
| 57 | |
Kostya Serebryany | 859778a | 2013-01-31 14:11:21 +0000 | [diff] [blame] | 58 | extern const char *SanitizerToolName; // Can be changed by the tool. |
| 59 | |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 60 | extern atomic_uint32_t current_verbosity; |
| 61 | INLINE void SetVerbosity(int verbosity) { |
| 62 | atomic_store(¤t_verbosity, verbosity, memory_order_relaxed); |
| 63 | } |
| 64 | INLINE int Verbosity() { |
| 65 | return atomic_load(¤t_verbosity, memory_order_relaxed); |
| 66 | } |
| 67 | |
Kostya Serebryany | f67ec2b | 2012-11-23 15:38:49 +0000 | [diff] [blame] | 68 | uptr GetPageSize(); |
| 69 | uptr GetPageSizeCached(); |
| 70 | uptr GetMmapGranularity(); |
Timur Iskhodzhanov | bb7f2d8 | 2013-07-16 09:47:39 +0000 | [diff] [blame] | 71 | uptr GetMaxVirtualAddress(); |
Alexey Samsonov | e5931fd | 2012-06-07 07:13:46 +0000 | [diff] [blame] | 72 | // Threads |
Dmitry Vyukov | e0023f7 | 2012-10-02 12:58:14 +0000 | [diff] [blame] | 73 | uptr GetTid(); |
Alexey Samsonov | fa3daaf | 2012-06-15 06:37:34 +0000 | [diff] [blame] | 74 | uptr GetThreadSelf(); |
Alexey Samsonov | ed996f7 | 2012-06-07 07:32:00 +0000 | [diff] [blame] | 75 | void GetThreadStackTopAndBottom(bool at_initialization, uptr *stack_top, |
Alexey Samsonov | e5931fd | 2012-06-07 07:13:46 +0000 | [diff] [blame] | 76 | uptr *stack_bottom); |
Sergey Matveev | 24323de | 2013-05-07 14:41:43 +0000 | [diff] [blame] | 77 | void GetThreadStackAndTls(bool main, uptr *stk_addr, uptr *stk_size, |
| 78 | uptr *tls_addr, uptr *tls_size); |
Alexey Samsonov | a25b346 | 2012-06-06 16:15:07 +0000 | [diff] [blame] | 79 | |
| 80 | // Memory management |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 81 | void *MmapOrDie(uptr size, const char *mem_type, bool raw_report = false); |
| 82 | INLINE void *MmapOrDieQuietly(uptr size, const char *mem_type) { |
| 83 | return MmapOrDie(size, mem_type, /*raw_report*/ true); |
| 84 | } |
Alexey Samsonov | 230c3be | 2012-06-06 09:26:25 +0000 | [diff] [blame] | 85 | void UnmapOrDie(void *addr, uptr size); |
Pirama Arumuga Nainar | cdce50b | 2015-07-01 12:26:56 -0700 | [diff] [blame] | 86 | void *MmapFixedNoReserve(uptr fixed_addr, uptr size, |
| 87 | const char *name = nullptr); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 88 | void *MmapNoReserveOrDie(uptr size, const char *mem_type); |
Kostya Serebryany | 9bfe78f | 2012-12-13 05:36:00 +0000 | [diff] [blame] | 89 | void *MmapFixedOrDie(uptr fixed_addr, uptr size); |
Pirama Arumuga Nainar | cdce50b | 2015-07-01 12:26:56 -0700 | [diff] [blame] | 90 | void *MmapNoAccess(uptr fixed_addr, uptr size, const char *name = nullptr); |
Kostya Serebryany | cc75259 | 2012-12-06 06:10:31 +0000 | [diff] [blame] | 91 | // Map aligned chunk of address space; size and alignment are powers of two. |
| 92 | void *MmapAlignedOrDie(uptr size, uptr alignment, const char *mem_type); |
Pirama Arumuga Nainar | 259f706 | 2015-05-06 11:49:53 -0700 | [diff] [blame] | 93 | // Disallow access to a memory range. Use MmapNoAccess to allocate an |
| 94 | // unaccessible memory. |
| 95 | bool MprotectNoAccess(uptr addr, uptr size); |
| 96 | |
Alexey Samsonov | dd3a911 | 2012-06-15 07:29:14 +0000 | [diff] [blame] | 97 | // Used to check if we can map shadow memory to a fixed location. |
| 98 | bool MemoryRangeIsAvailable(uptr range_start, uptr range_end); |
Kostya Serebryany | a54aec8 | 2012-12-27 07:37:24 +0000 | [diff] [blame] | 99 | void FlushUnneededShadowMemory(uptr addr, uptr size); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 100 | void IncreaseTotalMmap(uptr size); |
| 101 | void DecreaseTotalMmap(uptr size); |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 102 | uptr GetRSS(); |
| 103 | void NoHugePagesInRegion(uptr addr, uptr length); |
| 104 | void DontDumpShadowMemory(uptr addr, uptr length); |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 105 | // Check if the built VMA size matches the runtime one. |
| 106 | void CheckVMASize(); |
Alexey Samsonov | f607fc1 | 2012-06-14 14:42:58 +0000 | [diff] [blame] | 107 | |
Alexey Samsonov | 6611abe | 2012-08-21 08:13:37 +0000 | [diff] [blame] | 108 | // InternalScopedBuffer can be used instead of large stack arrays to |
| 109 | // keep frame size low. |
Kostya Serebryany | 4fa111c | 2012-08-29 08:40:36 +0000 | [diff] [blame] | 110 | // FIXME: use InternalAlloc instead of MmapOrDie once |
| 111 | // InternalAlloc is made libc-free. |
Alexey Samsonov | 6611abe | 2012-08-21 08:13:37 +0000 | [diff] [blame] | 112 | template<typename T> |
| 113 | class InternalScopedBuffer { |
| 114 | public: |
| 115 | explicit InternalScopedBuffer(uptr cnt) { |
| 116 | cnt_ = cnt; |
Kostya Serebryany | 4fa111c | 2012-08-29 08:40:36 +0000 | [diff] [blame] | 117 | ptr_ = (T*)MmapOrDie(cnt * sizeof(T), "InternalScopedBuffer"); |
Alexey Samsonov | 6611abe | 2012-08-21 08:13:37 +0000 | [diff] [blame] | 118 | } |
| 119 | ~InternalScopedBuffer() { |
Kostya Serebryany | 4fa111c | 2012-08-29 08:40:36 +0000 | [diff] [blame] | 120 | UnmapOrDie(ptr_, cnt_ * sizeof(T)); |
Alexey Samsonov | 6611abe | 2012-08-21 08:13:37 +0000 | [diff] [blame] | 121 | } |
| 122 | T &operator[](uptr i) { return ptr_[i]; } |
| 123 | T *data() { return ptr_; } |
| 124 | uptr size() { return cnt_ * sizeof(T); } |
| 125 | |
| 126 | private: |
| 127 | T *ptr_; |
| 128 | uptr cnt_; |
| 129 | // Disallow evil constructors. |
| 130 | InternalScopedBuffer(const InternalScopedBuffer&); |
| 131 | void operator=(const InternalScopedBuffer&); |
| 132 | }; |
| 133 | |
Alexey Samsonov | bb4697f | 2013-11-14 09:41:24 +0000 | [diff] [blame] | 134 | class InternalScopedString : public InternalScopedBuffer<char> { |
| 135 | public: |
| 136 | explicit InternalScopedString(uptr max_length) |
| 137 | : InternalScopedBuffer<char>(max_length), length_(0) { |
| 138 | (*this)[0] = '\0'; |
| 139 | } |
| 140 | uptr length() { return length_; } |
| 141 | void clear() { |
| 142 | (*this)[0] = '\0'; |
| 143 | length_ = 0; |
| 144 | } |
| 145 | void append(const char *format, ...); |
| 146 | |
| 147 | private: |
| 148 | uptr length_; |
| 149 | }; |
| 150 | |
Alexey Samsonov | d883c80 | 2012-08-27 14:51:36 +0000 | [diff] [blame] | 151 | // Simple low-level (mmap-based) allocator for internal use. Doesn't have |
| 152 | // constructor, so all instances of LowLevelAllocator should be |
| 153 | // linker initialized. |
Alexey Samsonov | 70e177e | 2012-08-27 09:30:58 +0000 | [diff] [blame] | 154 | class LowLevelAllocator { |
| 155 | public: |
Alexey Samsonov | d883c80 | 2012-08-27 14:51:36 +0000 | [diff] [blame] | 156 | // Requires an external lock. |
Alexey Samsonov | 70e177e | 2012-08-27 09:30:58 +0000 | [diff] [blame] | 157 | void *Allocate(uptr size); |
| 158 | private: |
| 159 | char *allocated_end_; |
| 160 | char *allocated_current_; |
| 161 | }; |
| 162 | typedef void (*LowLevelAllocateCallback)(uptr ptr, uptr size); |
| 163 | // Allows to register tool-specific callbacks for LowLevelAllocator. |
| 164 | // Passing NULL removes the callback. |
| 165 | void SetLowLevelAllocateCallback(LowLevelAllocateCallback callback); |
| 166 | |
Alexey Samsonov | f607fc1 | 2012-06-14 14:42:58 +0000 | [diff] [blame] | 167 | // IO |
Alexey Samsonov | e5931fd | 2012-06-07 07:13:46 +0000 | [diff] [blame] | 168 | void RawWrite(const char *buffer); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 169 | bool ColorizeReports(); |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 170 | void RemoveANSIEscapeSequencesFromString(char *buffer); |
Alexey Samsonov | 7fdcdf5 | 2012-06-06 13:58:39 +0000 | [diff] [blame] | 171 | void Printf(const char *format, ...); |
Alexey Samsonov | 7fdcdf5 | 2012-06-06 13:58:39 +0000 | [diff] [blame] | 172 | void Report(const char *format, ...); |
Kostya Serebryany | 283c296 | 2012-08-28 11:34:40 +0000 | [diff] [blame] | 173 | void SetPrintfAndReportCallback(void (*callback)(const char *)); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 174 | #define VReport(level, ...) \ |
| 175 | do { \ |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 176 | if ((uptr)Verbosity() >= (level)) Report(__VA_ARGS__); \ |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 177 | } while (0) |
| 178 | #define VPrintf(level, ...) \ |
| 179 | do { \ |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 180 | if ((uptr)Verbosity() >= (level)) Printf(__VA_ARGS__); \ |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 181 | } while (0) |
Alexey Samsonov | bb4697f | 2013-11-14 09:41:24 +0000 | [diff] [blame] | 182 | |
Alexey Samsonov | 7ed46ff | 2013-04-05 07:30:29 +0000 | [diff] [blame] | 183 | // Can be used to prevent mixing error reports from different sanitizers. |
| 184 | extern StaticSpinMutex CommonSanitizerReportMutex; |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 185 | |
| 186 | struct ReportFile { |
| 187 | void Write(const char *buffer, uptr length); |
Pirama Arumuga Nainar | 259f706 | 2015-05-06 11:49:53 -0700 | [diff] [blame] | 188 | bool SupportsColors(); |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 189 | void SetReportPath(const char *path); |
| 190 | |
| 191 | // Don't use fields directly. They are only declared public to allow |
| 192 | // aggregate initialization. |
| 193 | |
| 194 | // Protects fields below. |
| 195 | StaticSpinMutex *mu; |
| 196 | // Opened file descriptor. Defaults to stderr. It may be equal to |
| 197 | // kInvalidFd, in which case new file will be opened when necessary. |
| 198 | fd_t fd; |
| 199 | // Path prefix of report file, set via __sanitizer_set_report_path. |
| 200 | char path_prefix[kMaxPathLength]; |
| 201 | // Full path to report, obtained as <path_prefix>.PID |
| 202 | char full_path[kMaxPathLength]; |
| 203 | // PID of the process that opened fd. If a fork() occurs, |
| 204 | // the PID of child will be different from fd_pid. |
| 205 | uptr fd_pid; |
| 206 | |
| 207 | private: |
| 208 | void ReopenIfNecessary(); |
| 209 | }; |
| 210 | extern ReportFile report_file; |
| 211 | |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 212 | extern uptr stoptheworld_tracer_pid; |
| 213 | extern uptr stoptheworld_tracer_ppid; |
Alexey Samsonov | e954101 | 2012-06-06 13:11:29 +0000 | [diff] [blame] | 214 | |
Pirama Arumuga Nainar | 7c91505 | 2015-04-08 08:58:29 -0700 | [diff] [blame] | 215 | enum FileAccessMode { |
| 216 | RdOnly, |
| 217 | WrOnly, |
| 218 | RdWr |
| 219 | }; |
| 220 | |
Pirama Arumuga Nainar | 259f706 | 2015-05-06 11:49:53 -0700 | [diff] [blame] | 221 | // Returns kInvalidFd on error. |
| 222 | fd_t OpenFile(const char *filename, FileAccessMode mode, |
| 223 | error_t *errno_p = nullptr); |
| 224 | void CloseFile(fd_t); |
| 225 | |
| 226 | // Return true on success, false on error. |
| 227 | bool ReadFromFile(fd_t fd, void *buff, uptr buff_size, |
| 228 | uptr *bytes_read = nullptr, error_t *error_p = nullptr); |
| 229 | bool WriteToFile(fd_t fd, const void *buff, uptr buff_size, |
| 230 | uptr *bytes_written = nullptr, error_t *error_p = nullptr); |
| 231 | |
| 232 | bool RenameFile(const char *oldpath, const char *newpath, |
| 233 | error_t *error_p = nullptr); |
| 234 | |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 235 | // Scoped file handle closer. |
| 236 | struct FileCloser { |
| 237 | explicit FileCloser(fd_t fd) : fd(fd) {} |
| 238 | ~FileCloser() { CloseFile(fd); } |
| 239 | fd_t fd; |
| 240 | }; |
| 241 | |
Pirama Arumuga Nainar | 259f706 | 2015-05-06 11:49:53 -0700 | [diff] [blame] | 242 | bool SupportsColoredOutput(fd_t fd); |
| 243 | |
Alexey Samsonov | cffe2f5 | 2012-06-07 05:38:26 +0000 | [diff] [blame] | 244 | // Opens the file 'file_name" and reads up to 'max_len' bytes. |
| 245 | // The resulting buffer is mmaped and stored in '*buff'. |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 246 | // The size of the mmaped region is stored in '*buff_size'. |
| 247 | // The total number of read bytes is stored in '*read_len'. |
| 248 | // Returns true if file was successfully opened and read. |
| 249 | bool ReadFileToBuffer(const char *file_name, char **buff, uptr *buff_size, |
| 250 | uptr *read_len, uptr max_len = 1 << 26, |
| 251 | error_t *errno_p = nullptr); |
Alexey Samsonov | a68633f | 2012-07-03 08:24:14 +0000 | [diff] [blame] | 252 | // Maps given file to virtual memory, and returns pointer to it |
Pirama Arumuga Nainar | 259f706 | 2015-05-06 11:49:53 -0700 | [diff] [blame] | 253 | // (or NULL if mapping fails). Stores the size of mmaped region |
Alexey Samsonov | a68633f | 2012-07-03 08:24:14 +0000 | [diff] [blame] | 254 | // in '*buff_size'. |
| 255 | void *MapFileToMemory(const char *file_name, uptr *buff_size); |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 256 | void *MapWritableFileToMemory(void *addr, uptr size, fd_t fd, OFF_T offset); |
Alexey Samsonov | a68633f | 2012-07-03 08:24:14 +0000 | [diff] [blame] | 257 | |
Stephen Hines | 6d18623 | 2014-11-26 17:56:19 -0800 | [diff] [blame] | 258 | bool IsAccessibleMemoryRange(uptr beg, uptr size); |
| 259 | |
Alexey Samsonov | 90b0f1e | 2013-10-04 08:55:03 +0000 | [diff] [blame] | 260 | // Error report formatting. |
| 261 | const char *StripPathPrefix(const char *filepath, |
| 262 | const char *strip_file_prefix); |
Stephen Hines | 6d18623 | 2014-11-26 17:56:19 -0800 | [diff] [blame] | 263 | // Strip the directories from the module name. |
| 264 | const char *StripModuleName(const char *module); |
Alexey Samsonov | 90b0f1e | 2013-10-04 08:55:03 +0000 | [diff] [blame] | 265 | |
Alexey Samsonov | d7e5bb4 | 2012-09-17 09:12:39 +0000 | [diff] [blame] | 266 | // OS |
Pirama Arumuga Nainar | cdce50b | 2015-07-01 12:26:56 -0700 | [diff] [blame] | 267 | uptr ReadBinaryName(/*out*/char *buf, uptr buf_len); |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 268 | uptr ReadBinaryNameCached(/*out*/char *buf, uptr buf_len); |
| 269 | uptr ReadLongProcessName(/*out*/ char *buf, uptr buf_len); |
| 270 | const char *GetProcessName(); |
| 271 | void UpdateProcessName(); |
Pirama Arumuga Nainar | cdce50b | 2015-07-01 12:26:56 -0700 | [diff] [blame] | 272 | void CacheBinaryName(); |
Stephen Hines | 6d18623 | 2014-11-26 17:56:19 -0800 | [diff] [blame] | 273 | void DisableCoreDumperIfNecessary(); |
Alexey Samsonov | be7420c | 2012-06-15 06:08:19 +0000 | [diff] [blame] | 274 | void DumpProcessMap(); |
Alexey Samsonov | 93b4caf | 2012-11-09 14:45:30 +0000 | [diff] [blame] | 275 | bool FileExists(const char *filename); |
Alexey Samsonov | d7e5bb4 | 2012-09-17 09:12:39 +0000 | [diff] [blame] | 276 | const char *GetEnv(const char *name); |
Alexey Samsonov | ff7c14f | 2013-04-23 12:49:12 +0000 | [diff] [blame] | 277 | bool SetEnv(const char *name, const char *value); |
Alexey Samsonov | d7e5bb4 | 2012-09-17 09:12:39 +0000 | [diff] [blame] | 278 | const char *GetPwd(); |
Alexey Samsonov | 1dcd1d9 | 2013-09-03 13:20:48 +0000 | [diff] [blame] | 279 | char *FindPathToBinary(const char *name); |
Pirama Arumuga Nainar | 7c91505 | 2015-04-08 08:58:29 -0700 | [diff] [blame] | 280 | bool IsPathSeparator(const char c); |
| 281 | bool IsAbsolutePath(const char *path); |
| 282 | |
Alexey Samsonov | 0fa691b | 2013-02-18 07:17:12 +0000 | [diff] [blame] | 283 | u32 GetUid(); |
Alexey Samsonov | d7e5bb4 | 2012-09-17 09:12:39 +0000 | [diff] [blame] | 284 | void ReExec(); |
| 285 | bool StackSizeIsUnlimited(); |
| 286 | void SetStackSizeLimitInBytes(uptr limit); |
Stephen Hines | 6d18623 | 2014-11-26 17:56:19 -0800 | [diff] [blame] | 287 | bool AddressSpaceIsUnlimited(); |
| 288 | void SetAddressSpaceUnlimited(); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 289 | void AdjustStackSize(void *attr); |
| 290 | void PrepareForSandboxing(__sanitizer_sandbox_arguments *args); |
| 291 | void CovPrepareForSandboxing(__sanitizer_sandbox_arguments *args); |
| 292 | void SetSandboxingCallback(void (*f)()); |
| 293 | |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 294 | void CoverageUpdateMapping(); |
Stephen Hines | 6a211c5 | 2014-07-21 00:49:56 -0700 | [diff] [blame] | 295 | void CovBeforeFork(); |
| 296 | void CovAfterFork(int child_pid); |
Alexey Samsonov | d7e5bb4 | 2012-09-17 09:12:39 +0000 | [diff] [blame] | 297 | |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 298 | void InitializeCoverage(bool enabled, const char *coverage_dir); |
| 299 | void ReInitializeCoverage(bool enabled, const char *coverage_dir); |
| 300 | |
Evgeniy Stepanov | b114ed8 | 2013-03-13 08:19:53 +0000 | [diff] [blame] | 301 | void InitTlsSize(); |
| 302 | uptr GetTlsSize(); |
| 303 | |
Alexey Samsonov | d7e5bb4 | 2012-09-17 09:12:39 +0000 | [diff] [blame] | 304 | // Other |
Alexey Samsonov | fa3daaf | 2012-06-15 06:37:34 +0000 | [diff] [blame] | 305 | void SleepForSeconds(int seconds); |
Alexey Samsonov | 0969bcf | 2012-06-18 08:44:30 +0000 | [diff] [blame] | 306 | void SleepForMillis(int millis); |
Dmitry Vyukov | 4bebe7b | 2013-03-21 06:24:31 +0000 | [diff] [blame] | 307 | u64 NanoTime(); |
Alexey Samsonov | fa3daaf | 2012-06-15 06:37:34 +0000 | [diff] [blame] | 308 | int Atexit(void (*function)(void)); |
Alexey Samsonov | 4c49666 | 2012-06-15 07:00:31 +0000 | [diff] [blame] | 309 | void SortArray(uptr *array, uptr size); |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 310 | bool TemplateMatch(const char *templ, const char *str); |
Alexey Samsonov | be7420c | 2012-06-15 06:08:19 +0000 | [diff] [blame] | 311 | |
Alexey Samsonov | 591616d | 2012-09-11 09:44:48 +0000 | [diff] [blame] | 312 | // Exit |
| 313 | void NORETURN Abort(); |
Alexey Samsonov | 591616d | 2012-09-11 09:44:48 +0000 | [diff] [blame] | 314 | void NORETURN Die(); |
Timur Iskhodzhanov | 3c80c6c | 2013-08-13 11:42:45 +0000 | [diff] [blame] | 315 | void NORETURN |
Alexey Samsonov | 591616d | 2012-09-11 09:44:48 +0000 | [diff] [blame] | 316 | CheckFailed(const char *file, int line, const char *cond, u64 v1, u64 v2); |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 317 | void NORETURN ReportMmapFailureAndDie(uptr size, const char *mem_type, |
| 318 | const char *mmap_type, error_t err, |
| 319 | bool raw_report = false); |
Alexey Samsonov | 591616d | 2012-09-11 09:44:48 +0000 | [diff] [blame] | 320 | |
Kostya Serebryany | dddb18b | 2012-12-07 11:27:24 +0000 | [diff] [blame] | 321 | // Set the name of the current thread to 'name', return true on succees. |
| 322 | // The name may be truncated to a system-dependent limit. |
| 323 | bool SanitizerSetThreadName(const char *name); |
| 324 | // Get the name of the current thread (no more than max_len bytes), |
| 325 | // return true on succees. name should have space for at least max_len+1 bytes. |
| 326 | bool SanitizerGetThreadName(char *name, int max_len); |
| 327 | |
Alexey Samsonov | 591616d | 2012-09-11 09:44:48 +0000 | [diff] [blame] | 328 | // Specific tools may override behavior of "Die" and "CheckFailed" functions |
| 329 | // to do tool-specific job. |
Sergey Matveev | 90629fb | 2013-08-26 13:20:31 +0000 | [diff] [blame] | 330 | typedef void (*DieCallbackType)(void); |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 331 | |
| 332 | // It's possible to add several callbacks that would be run when "Die" is |
| 333 | // called. The callbacks will be run in the opposite order. The tools are |
| 334 | // strongly recommended to setup all callbacks during initialization, when there |
| 335 | // is only a single thread. |
| 336 | bool AddDieCallback(DieCallbackType callback); |
| 337 | bool RemoveDieCallback(DieCallbackType callback); |
| 338 | |
| 339 | void SetUserDieCallback(DieCallbackType callback); |
| 340 | |
Alexey Samsonov | 591616d | 2012-09-11 09:44:48 +0000 | [diff] [blame] | 341 | typedef void (*CheckFailedCallbackType)(const char *, int, const char *, |
| 342 | u64, u64); |
| 343 | void SetCheckFailedCallback(CheckFailedCallbackType callback); |
| 344 | |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 345 | // Callback will be called if soft_rss_limit_mb is given and the limit is |
| 346 | // exceeded (exceeded==true) or if rss went down below the limit |
| 347 | // (exceeded==false). |
| 348 | // The callback should be registered once at the tool init time. |
| 349 | void SetSoftRssLimitExceededCallback(void (*Callback)(bool exceeded)); |
| 350 | |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 351 | // Functions related to signal handling. |
| 352 | typedef void (*SignalHandlerType)(int, void *, void *); |
| 353 | bool IsDeadlySignal(int signum); |
| 354 | void InstallDeadlySignalHandlers(SignalHandlerType handler); |
| 355 | // Alternative signal stack (POSIX-only). |
| 356 | void SetAlternateSignalStack(); |
| 357 | void UnsetAlternateSignalStack(); |
| 358 | |
Alexey Samsonov | 2fb0872 | 2013-11-01 17:02:14 +0000 | [diff] [blame] | 359 | // We don't want a summary too long. |
| 360 | const int kMaxSummaryLength = 1024; |
| 361 | // Construct a one-line string: |
| 362 | // SUMMARY: SanitizerToolName: error_message |
| 363 | // and pass it to __sanitizer_report_error_summary. |
| 364 | void ReportErrorSummary(const char *error_message); |
| 365 | // Same as above, but construct error_message as: |
Pirama Arumuga Nainar | 7c91505 | 2015-04-08 08:58:29 -0700 | [diff] [blame] | 366 | // error_type file:line[:column][ function] |
| 367 | void ReportErrorSummary(const char *error_type, const AddressInfo &info); |
| 368 | // Same as above, but obtains AddressInfo by symbolizing top stack trace frame. |
Alexey Samsonov | 2fb0872 | 2013-11-01 17:02:14 +0000 | [diff] [blame] | 369 | void ReportErrorSummary(const char *error_type, StackTrace *trace); |
Kostya Serebryany | 2673fd8 | 2013-02-06 12:36:49 +0000 | [diff] [blame] | 370 | |
Alexey Samsonov | 4c49666 | 2012-06-15 07:00:31 +0000 | [diff] [blame] | 371 | // Math |
Dmitry Vyukov | c528867 | 2013-06-10 10:02:02 +0000 | [diff] [blame] | 372 | #if SANITIZER_WINDOWS && !defined(__clang__) && !defined(__GNUC__) |
Timur Iskhodzhanov | 400a946 | 2013-02-08 11:45:04 +0000 | [diff] [blame] | 373 | extern "C" { |
| 374 | unsigned char _BitScanForward(unsigned long *index, unsigned long mask); // NOLINT |
| 375 | unsigned char _BitScanReverse(unsigned long *index, unsigned long mask); // NOLINT |
| 376 | #if defined(_WIN64) |
| 377 | unsigned char _BitScanForward64(unsigned long *index, unsigned __int64 mask); // NOLINT |
| 378 | unsigned char _BitScanReverse64(unsigned long *index, unsigned __int64 mask); // NOLINT |
| 379 | #endif |
| 380 | } |
| 381 | #endif |
| 382 | |
| 383 | INLINE uptr MostSignificantSetBitIndex(uptr x) { |
Kostya Serebryany | f155fcc | 2013-02-26 12:59:06 +0000 | [diff] [blame] | 384 | CHECK_NE(x, 0U); |
Timur Iskhodzhanov | 400a946 | 2013-02-08 11:45:04 +0000 | [diff] [blame] | 385 | unsigned long up; // NOLINT |
Dmitry Vyukov | c528867 | 2013-06-10 10:02:02 +0000 | [diff] [blame] | 386 | #if !SANITIZER_WINDOWS || defined(__clang__) || defined(__GNUC__) |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 387 | # ifdef _WIN64 |
| 388 | up = SANITIZER_WORDSIZE - 1 - __builtin_clzll(x); |
| 389 | # else |
Timur Iskhodzhanov | 400a946 | 2013-02-08 11:45:04 +0000 | [diff] [blame] | 390 | up = SANITIZER_WORDSIZE - 1 - __builtin_clzl(x); |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 391 | # endif |
Timur Iskhodzhanov | 400a946 | 2013-02-08 11:45:04 +0000 | [diff] [blame] | 392 | #elif defined(_WIN64) |
| 393 | _BitScanReverse64(&up, x); |
| 394 | #else |
| 395 | _BitScanReverse(&up, x); |
| 396 | #endif |
| 397 | return up; |
| 398 | } |
| 399 | |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 400 | INLINE uptr LeastSignificantSetBitIndex(uptr x) { |
| 401 | CHECK_NE(x, 0U); |
| 402 | unsigned long up; // NOLINT |
| 403 | #if !SANITIZER_WINDOWS || defined(__clang__) || defined(__GNUC__) |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 404 | # ifdef _WIN64 |
| 405 | up = __builtin_ctzll(x); |
| 406 | # else |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 407 | up = __builtin_ctzl(x); |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 408 | # endif |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 409 | #elif defined(_WIN64) |
| 410 | _BitScanForward64(&up, x); |
| 411 | #else |
| 412 | _BitScanForward(&up, x); |
| 413 | #endif |
| 414 | return up; |
| 415 | } |
| 416 | |
Dmitry Vyukov | b78caa6 | 2012-07-05 16:18:28 +0000 | [diff] [blame] | 417 | INLINE bool IsPowerOfTwo(uptr x) { |
Alexey Samsonov | 230c3be | 2012-06-06 09:26:25 +0000 | [diff] [blame] | 418 | return (x & (x - 1)) == 0; |
| 419 | } |
Timur Iskhodzhanov | 400a946 | 2013-02-08 11:45:04 +0000 | [diff] [blame] | 420 | |
| 421 | INLINE uptr RoundUpToPowerOfTwo(uptr size) { |
| 422 | CHECK(size); |
| 423 | if (IsPowerOfTwo(size)) return size; |
| 424 | |
| 425 | uptr up = MostSignificantSetBitIndex(size); |
| 426 | CHECK(size < (1ULL << (up + 1))); |
| 427 | CHECK(size > (1ULL << up)); |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 428 | return 1ULL << (up + 1); |
Timur Iskhodzhanov | 400a946 | 2013-02-08 11:45:04 +0000 | [diff] [blame] | 429 | } |
| 430 | |
Dmitry Vyukov | b78caa6 | 2012-07-05 16:18:28 +0000 | [diff] [blame] | 431 | INLINE uptr RoundUpTo(uptr size, uptr boundary) { |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 432 | RAW_CHECK(IsPowerOfTwo(boundary)); |
Alexey Samsonov | 230c3be | 2012-06-06 09:26:25 +0000 | [diff] [blame] | 433 | return (size + boundary - 1) & ~(boundary - 1); |
| 434 | } |
Timur Iskhodzhanov | 400a946 | 2013-02-08 11:45:04 +0000 | [diff] [blame] | 435 | |
Kostya Serebryany | bc9940e | 2012-12-14 12:15:09 +0000 | [diff] [blame] | 436 | INLINE uptr RoundDownTo(uptr x, uptr boundary) { |
| 437 | return x & ~(boundary - 1); |
| 438 | } |
Timur Iskhodzhanov | 400a946 | 2013-02-08 11:45:04 +0000 | [diff] [blame] | 439 | |
Kostya Serebryany | 84a996f | 2012-12-11 14:41:31 +0000 | [diff] [blame] | 440 | INLINE bool IsAligned(uptr a, uptr alignment) { |
| 441 | return (a & (alignment - 1)) == 0; |
| 442 | } |
Timur Iskhodzhanov | 400a946 | 2013-02-08 11:45:04 +0000 | [diff] [blame] | 443 | |
| 444 | INLINE uptr Log2(uptr x) { |
| 445 | CHECK(IsPowerOfTwo(x)); |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 446 | return LeastSignificantSetBitIndex(x); |
Timur Iskhodzhanov | 400a946 | 2013-02-08 11:45:04 +0000 | [diff] [blame] | 447 | } |
| 448 | |
Alexey Samsonov | 0dc3177 | 2012-07-16 11:27:17 +0000 | [diff] [blame] | 449 | // Don't use std::min, std::max or std::swap, to minimize dependency |
| 450 | // on libstdc++. |
Alexey Samsonov | 4c49666 | 2012-06-15 07:00:31 +0000 | [diff] [blame] | 451 | template<class T> T Min(T a, T b) { return a < b ? a : b; } |
| 452 | template<class T> T Max(T a, T b) { return a > b ? a : b; } |
Alexey Samsonov | 0dc3177 | 2012-07-16 11:27:17 +0000 | [diff] [blame] | 453 | template<class T> void Swap(T& a, T& b) { |
| 454 | T tmp = a; |
| 455 | a = b; |
| 456 | b = tmp; |
| 457 | } |
Alexey Samsonov | 9edf750 | 2012-06-06 06:47:26 +0000 | [diff] [blame] | 458 | |
Alexey Samsonov | c925697 | 2012-06-15 13:09:52 +0000 | [diff] [blame] | 459 | // Char handling |
Dmitry Vyukov | b78caa6 | 2012-07-05 16:18:28 +0000 | [diff] [blame] | 460 | INLINE bool IsSpace(int c) { |
Alexey Samsonov | c925697 | 2012-06-15 13:09:52 +0000 | [diff] [blame] | 461 | return (c == ' ') || (c == '\n') || (c == '\t') || |
| 462 | (c == '\f') || (c == '\r') || (c == '\v'); |
| 463 | } |
Dmitry Vyukov | b78caa6 | 2012-07-05 16:18:28 +0000 | [diff] [blame] | 464 | INLINE bool IsDigit(int c) { |
Alexey Samsonov | c925697 | 2012-06-15 13:09:52 +0000 | [diff] [blame] | 465 | return (c >= '0') && (c <= '9'); |
| 466 | } |
Dmitry Vyukov | b78caa6 | 2012-07-05 16:18:28 +0000 | [diff] [blame] | 467 | INLINE int ToLower(int c) { |
Alexey Samsonov | c925697 | 2012-06-15 13:09:52 +0000 | [diff] [blame] | 468 | return (c >= 'A' && c <= 'Z') ? (c + 'a' - 'A') : c; |
| 469 | } |
| 470 | |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 471 | // A low-level vector based on mmap. May incur a significant memory overhead for |
| 472 | // small vectors. |
| 473 | // WARNING: The current implementation supports only POD types. |
| 474 | template<typename T> |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 475 | class InternalMmapVectorNoCtor { |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 476 | public: |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 477 | void Initialize(uptr initial_capacity) { |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 478 | capacity_ = Max(initial_capacity, (uptr)1); |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 479 | size_ = 0; |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 480 | data_ = (T *)MmapOrDie(capacity_ * sizeof(T), "InternalMmapVectorNoCtor"); |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 481 | } |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 482 | void Destroy() { |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 483 | UnmapOrDie(data_, capacity_ * sizeof(T)); |
| 484 | } |
| 485 | T &operator[](uptr i) { |
Alexey Samsonov | 9695003 | 2013-03-29 08:03:01 +0000 | [diff] [blame] | 486 | CHECK_LT(i, size_); |
Alexey Samsonov | ca280f2 | 2013-03-28 15:37:11 +0000 | [diff] [blame] | 487 | return data_[i]; |
| 488 | } |
| 489 | const T &operator[](uptr i) const { |
Alexey Samsonov | 9695003 | 2013-03-29 08:03:01 +0000 | [diff] [blame] | 490 | CHECK_LT(i, size_); |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 491 | return data_[i]; |
| 492 | } |
| 493 | void push_back(const T &element) { |
| 494 | CHECK_LE(size_, capacity_); |
| 495 | if (size_ == capacity_) { |
| 496 | uptr new_capacity = RoundUpToPowerOfTwo(size_ + 1); |
| 497 | Resize(new_capacity); |
| 498 | } |
| 499 | data_[size_++] = element; |
| 500 | } |
Alexey Samsonov | 352b245 | 2013-03-05 11:58:25 +0000 | [diff] [blame] | 501 | T &back() { |
| 502 | CHECK_GT(size_, 0); |
| 503 | return data_[size_ - 1]; |
| 504 | } |
| 505 | void pop_back() { |
| 506 | CHECK_GT(size_, 0); |
| 507 | size_--; |
| 508 | } |
Alexey Samsonov | ca280f2 | 2013-03-28 15:37:11 +0000 | [diff] [blame] | 509 | uptr size() const { |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 510 | return size_; |
| 511 | } |
Alexander Potapenko | e5b398f | 2013-04-01 13:55:34 +0000 | [diff] [blame] | 512 | const T *data() const { |
| 513 | return data_; |
| 514 | } |
Pirama Arumuga Nainar | 7c91505 | 2015-04-08 08:58:29 -0700 | [diff] [blame] | 515 | T *data() { |
| 516 | return data_; |
| 517 | } |
Alexander Potapenko | e5b398f | 2013-04-01 13:55:34 +0000 | [diff] [blame] | 518 | uptr capacity() const { |
| 519 | return capacity_; |
| 520 | } |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 521 | |
Bob Wilson | dbd69cc | 2013-11-15 07:18:15 +0000 | [diff] [blame] | 522 | void clear() { size_ = 0; } |
Pirama Arumuga Nainar | 7c91505 | 2015-04-08 08:58:29 -0700 | [diff] [blame] | 523 | bool empty() const { return size() == 0; } |
Bob Wilson | dbd69cc | 2013-11-15 07:18:15 +0000 | [diff] [blame] | 524 | |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 525 | private: |
| 526 | void Resize(uptr new_capacity) { |
| 527 | CHECK_GT(new_capacity, 0); |
| 528 | CHECK_LE(size_, new_capacity); |
| 529 | T *new_data = (T *)MmapOrDie(new_capacity * sizeof(T), |
Alexey Samsonov | a64d435 | 2013-06-14 09:59:40 +0000 | [diff] [blame] | 530 | "InternalMmapVector"); |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 531 | internal_memcpy(new_data, data_, size_ * sizeof(T)); |
| 532 | T *old_data = data_; |
| 533 | data_ = new_data; |
| 534 | UnmapOrDie(old_data, capacity_ * sizeof(T)); |
| 535 | capacity_ = new_capacity; |
| 536 | } |
Kostya Serebryany | b5f9521 | 2013-02-26 13:30:27 +0000 | [diff] [blame] | 537 | |
| 538 | T *data_; |
| 539 | uptr capacity_; |
| 540 | uptr size_; |
| 541 | }; |
Sergey Matveev | 15bb32b | 2013-05-13 11:58:48 +0000 | [diff] [blame] | 542 | |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 543 | template<typename T> |
| 544 | class InternalMmapVector : public InternalMmapVectorNoCtor<T> { |
| 545 | public: |
| 546 | explicit InternalMmapVector(uptr initial_capacity) { |
| 547 | InternalMmapVectorNoCtor<T>::Initialize(initial_capacity); |
| 548 | } |
| 549 | ~InternalMmapVector() { InternalMmapVectorNoCtor<T>::Destroy(); } |
| 550 | // Disallow evil constructors. |
| 551 | InternalMmapVector(const InternalMmapVector&); |
| 552 | void operator=(const InternalMmapVector&); |
| 553 | }; |
| 554 | |
Alexey Samsonov | a64d435 | 2013-06-14 09:59:40 +0000 | [diff] [blame] | 555 | // HeapSort for arrays and InternalMmapVector. |
Sergey Matveev | 15bb32b | 2013-05-13 11:58:48 +0000 | [diff] [blame] | 556 | template<class Container, class Compare> |
| 557 | void InternalSort(Container *v, uptr size, Compare comp) { |
| 558 | if (size < 2) |
| 559 | return; |
| 560 | // Stage 1: insert elements to the heap. |
| 561 | for (uptr i = 1; i < size; i++) { |
| 562 | uptr j, p; |
| 563 | for (j = i; j > 0; j = p) { |
| 564 | p = (j - 1) / 2; |
| 565 | if (comp((*v)[p], (*v)[j])) |
| 566 | Swap((*v)[j], (*v)[p]); |
| 567 | else |
| 568 | break; |
| 569 | } |
| 570 | } |
| 571 | // Stage 2: swap largest element with the last one, |
| 572 | // and sink the new top. |
| 573 | for (uptr i = size - 1; i > 0; i--) { |
| 574 | Swap((*v)[0], (*v)[i]); |
| 575 | uptr j, max_ind; |
| 576 | for (j = 0; j < i; j = max_ind) { |
| 577 | uptr left = 2 * j + 1; |
| 578 | uptr right = 2 * j + 2; |
| 579 | max_ind = j; |
| 580 | if (left < i && comp((*v)[max_ind], (*v)[left])) |
| 581 | max_ind = left; |
| 582 | if (right < i && comp((*v)[max_ind], (*v)[right])) |
| 583 | max_ind = right; |
| 584 | if (max_ind != j) |
| 585 | Swap((*v)[j], (*v)[max_ind]); |
| 586 | else |
| 587 | break; |
| 588 | } |
| 589 | } |
| 590 | } |
| 591 | |
Sergey Matveev | 384a448 | 2013-08-26 13:24:43 +0000 | [diff] [blame] | 592 | template<class Container, class Value, class Compare> |
| 593 | uptr InternalBinarySearch(const Container &v, uptr first, uptr last, |
| 594 | const Value &val, Compare comp) { |
| 595 | uptr not_found = last + 1; |
| 596 | while (last >= first) { |
| 597 | uptr mid = (first + last) / 2; |
| 598 | if (comp(v[mid], val)) |
| 599 | first = mid + 1; |
| 600 | else if (comp(val, v[mid])) |
| 601 | last = mid - 1; |
| 602 | else |
| 603 | return mid; |
| 604 | } |
| 605 | return not_found; |
| 606 | } |
| 607 | |
Alexey Samsonov | 7847d77 | 2013-09-10 14:36:16 +0000 | [diff] [blame] | 608 | // Represents a binary loaded into virtual memory (e.g. this can be an |
| 609 | // executable or a shared object). |
| 610 | class LoadedModule { |
| 611 | public: |
Pirama Arumuga Nainar | 259f706 | 2015-05-06 11:49:53 -0700 | [diff] [blame] | 612 | LoadedModule() : full_name_(nullptr), base_address_(0) { ranges_.clear(); } |
| 613 | void set(const char *module_name, uptr base_address); |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 614 | void clear(); |
Stephen Hines | 6a211c5 | 2014-07-21 00:49:56 -0700 | [diff] [blame] | 615 | void addAddressRange(uptr beg, uptr end, bool executable); |
Alexey Samsonov | 7847d77 | 2013-09-10 14:36:16 +0000 | [diff] [blame] | 616 | bool containsAddress(uptr address) const; |
| 617 | |
| 618 | const char *full_name() const { return full_name_; } |
| 619 | uptr base_address() const { return base_address_; } |
| 620 | |
Alexey Samsonov | 7847d77 | 2013-09-10 14:36:16 +0000 | [diff] [blame] | 621 | struct AddressRange { |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 622 | AddressRange *next; |
Alexey Samsonov | 7847d77 | 2013-09-10 14:36:16 +0000 | [diff] [blame] | 623 | uptr beg; |
| 624 | uptr end; |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 625 | bool executable; |
| 626 | |
| 627 | AddressRange(uptr beg, uptr end, bool executable) |
| 628 | : next(nullptr), beg(beg), end(end), executable(executable) {} |
Alexey Samsonov | 7847d77 | 2013-09-10 14:36:16 +0000 | [diff] [blame] | 629 | }; |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 630 | |
| 631 | typedef IntrusiveList<AddressRange>::ConstIterator Iterator; |
| 632 | Iterator ranges() const { return Iterator(&ranges_); } |
| 633 | |
| 634 | private: |
| 635 | char *full_name_; // Owned. |
Alexey Samsonov | 7847d77 | 2013-09-10 14:36:16 +0000 | [diff] [blame] | 636 | uptr base_address_; |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 637 | IntrusiveList<AddressRange> ranges_; |
Alexey Samsonov | 7847d77 | 2013-09-10 14:36:16 +0000 | [diff] [blame] | 638 | }; |
| 639 | |
| 640 | // OS-dependent function that fills array with descriptions of at most |
| 641 | // "max_modules" currently loaded modules. Returns the number of |
| 642 | // initialized modules. If filter is nonzero, ignores modules for which |
| 643 | // filter(full_name) is false. |
| 644 | typedef bool (*string_predicate_t)(const char *); |
| 645 | uptr GetListOfModules(LoadedModule *modules, uptr max_modules, |
| 646 | string_predicate_t filter); |
| 647 | |
Sergey Matveev | c519335 | 2013-10-14 14:04:50 +0000 | [diff] [blame] | 648 | // Callback type for iterating over a set of memory ranges. |
| 649 | typedef void (*RangeIteratorCallback)(uptr begin, uptr end, void *arg); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 650 | |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 651 | enum AndroidApiLevel { |
| 652 | ANDROID_NOT_ANDROID = 0, |
| 653 | ANDROID_KITKAT = 19, |
| 654 | ANDROID_LOLLIPOP_MR1 = 22, |
| 655 | ANDROID_POST_LOLLIPOP = 23 |
| 656 | }; |
| 657 | |
| 658 | void WriteToSyslog(const char *buffer); |
| 659 | |
| 660 | #if SANITIZER_MAC |
| 661 | void LogFullErrorReport(const char *buffer); |
| 662 | #else |
| 663 | INLINE void LogFullErrorReport(const char *buffer) {} |
| 664 | #endif |
| 665 | |
| 666 | #if SANITIZER_LINUX || SANITIZER_MAC |
| 667 | void WriteOneLineToSyslog(const char *s); |
| 668 | #else |
| 669 | INLINE void WriteOneLineToSyslog(const char *s) {} |
| 670 | #endif |
| 671 | |
| 672 | #if SANITIZER_LINUX |
Evgeniy Stepanov | aafc5c8 | 2014-09-15 11:37:40 +0000 | [diff] [blame] | 673 | // Initialize Android logging. Any writes before this are silently lost. |
| 674 | void AndroidLogInit(); |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 675 | bool ShouldLogAfterPrintf(); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 676 | #else |
Evgeniy Stepanov | aafc5c8 | 2014-09-15 11:37:40 +0000 | [diff] [blame] | 677 | INLINE void AndroidLogInit() {} |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 678 | INLINE bool ShouldLogAfterPrintf() { return false; } |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 679 | #endif |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 680 | |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 681 | #if SANITIZER_ANDROID |
| 682 | void SanitizerInitializeUnwinder(); |
| 683 | AndroidApiLevel AndroidGetApiLevel(); |
| 684 | #else |
| 685 | INLINE void AndroidLogWrite(const char *buffer_unused) {} |
| 686 | INLINE void SanitizerInitializeUnwinder() {} |
| 687 | INLINE AndroidApiLevel AndroidGetApiLevel() { return ANDROID_NOT_ANDROID; } |
| 688 | #endif |
| 689 | |
| 690 | INLINE uptr GetPthreadDestructorIterations() { |
| 691 | #if SANITIZER_ANDROID |
| 692 | return (AndroidGetApiLevel() == ANDROID_LOLLIPOP_MR1) ? 8 : 4; |
| 693 | #elif SANITIZER_POSIX |
| 694 | return 4; |
| 695 | #else |
| 696 | // Unused on Windows. |
| 697 | return 0; |
| 698 | #endif |
| 699 | } |
| 700 | |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 701 | void *internal_start_thread(void(*func)(void*), void *arg); |
| 702 | void internal_join_thread(void *th); |
| 703 | void MaybeStartBackgroudThread(); |
| 704 | |
| 705 | // Make the compiler think that something is going on there. |
| 706 | // Use this inside a loop that looks like memset/memcpy/etc to prevent the |
| 707 | // compiler from recognising it and turning it into an actual call to |
| 708 | // memset/memcpy/etc. |
| 709 | static inline void SanitizerBreakOptimization(void *arg) { |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 710 | #if _MSC_VER && !defined(__clang__) |
| 711 | _ReadWriteBarrier(); |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 712 | #else |
| 713 | __asm__ __volatile__("" : : "r" (arg) : "memory"); |
| 714 | #endif |
| 715 | } |
| 716 | |
Pirama Arumuga Nainar | 7c91505 | 2015-04-08 08:58:29 -0700 | [diff] [blame] | 717 | struct SignalContext { |
| 718 | void *context; |
| 719 | uptr addr; |
| 720 | uptr pc; |
| 721 | uptr sp; |
| 722 | uptr bp; |
| 723 | |
| 724 | SignalContext(void *context, uptr addr, uptr pc, uptr sp, uptr bp) : |
| 725 | context(context), addr(addr), pc(pc), sp(sp), bp(bp) { |
| 726 | } |
| 727 | |
| 728 | // Creates signal context in a platform-specific manner. |
| 729 | static SignalContext Create(void *siginfo, void *context); |
| 730 | }; |
| 731 | |
| 732 | void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp); |
| 733 | |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 734 | void DisableReexec(); |
| 735 | void MaybeReexec(); |
| 736 | |
Alexey Samsonov | 9edf750 | 2012-06-06 06:47:26 +0000 | [diff] [blame] | 737 | } // namespace __sanitizer |
| 738 | |
Peter Collingbourne | 5317724 | 2013-10-24 06:23:39 +0000 | [diff] [blame] | 739 | inline void *operator new(__sanitizer::operator_new_size_type size, |
| 740 | __sanitizer::LowLevelAllocator &alloc) { |
| 741 | return alloc.Allocate(size); |
| 742 | } |
| 743 | |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 744 | struct StackDepotStats { |
| 745 | uptr n_uniq_ids; |
| 746 | uptr allocated; |
| 747 | }; |
| 748 | |
Alexey Samsonov | 9edf750 | 2012-06-06 06:47:26 +0000 | [diff] [blame] | 749 | #endif // SANITIZER_COMMON_H |