| File: | compiler-rt/lib/profile/InstrProfilingFile.c |
| Warning: | line 900, column 9 Null pointer passed to 2nd parameter expecting 'nonnull' |
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| 1 | /*===- InstrProfilingFile.c - Write instrumentation to a file -------------===*\ | ||||
| 2 | |* | ||||
| 3 | |* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||||
| 4 | |* See https://llvm.org/LICENSE.txt for license information. | ||||
| 5 | |* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||||
| 6 | |* | ||||
| 7 | \*===----------------------------------------------------------------------===*/ | ||||
| 8 | |||||
| 9 | #if !defined(__Fuchsia__) | ||||
| 10 | |||||
| 11 | #include <assert.h> | ||||
| 12 | #include <errno(*__errno_location ()).h> | ||||
| 13 | #include <stdio.h> | ||||
| 14 | #include <stdlib.h> | ||||
| 15 | #include <string.h> | ||||
| 16 | #ifdef _MSC_VER | ||||
| 17 | /* For _alloca. */ | ||||
| 18 | #include <malloc.h> | ||||
| 19 | #endif | ||||
| 20 | #if defined(_WIN32) | ||||
| 21 | #include "WindowsMMap.h" | ||||
| 22 | /* For _chsize_s */ | ||||
| 23 | #include <io.h> | ||||
| 24 | #include <process.h> | ||||
| 25 | #else | ||||
| 26 | #include <sys/file.h> | ||||
| 27 | #include <sys/mman.h> | ||||
| 28 | #include <unistd.h> | ||||
| 29 | #if defined(__linux__1) | ||||
| 30 | #include <sys/types.h> | ||||
| 31 | #endif | ||||
| 32 | #endif | ||||
| 33 | |||||
| 34 | #include "InstrProfiling.h" | ||||
| 35 | #include "InstrProfilingInternal.h" | ||||
| 36 | #include "InstrProfilingPort.h" | ||||
| 37 | #include "InstrProfilingUtil.h" | ||||
| 38 | |||||
| 39 | /* From where is profile name specified. | ||||
| 40 | * The order the enumerators define their | ||||
| 41 | * precedence. Re-order them may lead to | ||||
| 42 | * runtime behavior change. */ | ||||
| 43 | typedef enum ProfileNameSpecifier { | ||||
| 44 | PNS_unknown = 0, | ||||
| 45 | PNS_default, | ||||
| 46 | PNS_command_line, | ||||
| 47 | PNS_environment, | ||||
| 48 | PNS_runtime_api | ||||
| 49 | } ProfileNameSpecifier; | ||||
| 50 | |||||
| 51 | static const char *getPNSStr(ProfileNameSpecifier PNS) { | ||||
| 52 | switch (PNS) { | ||||
| 53 | case PNS_default: | ||||
| 54 | return "default setting"; | ||||
| 55 | case PNS_command_line: | ||||
| 56 | return "command line"; | ||||
| 57 | case PNS_environment: | ||||
| 58 | return "environment variable"; | ||||
| 59 | case PNS_runtime_api: | ||||
| 60 | return "runtime API"; | ||||
| 61 | default: | ||||
| 62 | return "Unknown"; | ||||
| 63 | } | ||||
| 64 | } | ||||
| 65 | |||||
| 66 | #define MAX_PID_SIZE16 16 | ||||
| 67 | /* Data structure holding the result of parsed filename pattern. */ | ||||
| 68 | typedef struct lprofFilename { | ||||
| 69 | /* File name string possibly with %p or %h specifiers. */ | ||||
| 70 | const char *FilenamePat; | ||||
| 71 | /* A flag indicating if FilenamePat's memory is allocated | ||||
| 72 | * by runtime. */ | ||||
| 73 | unsigned OwnsFilenamePat; | ||||
| 74 | const char *ProfilePathPrefix; | ||||
| 75 | char PidChars[MAX_PID_SIZE16]; | ||||
| 76 | char *TmpDir; | ||||
| 77 | char Hostname[COMPILER_RT_MAX_HOSTLEN128]; | ||||
| 78 | unsigned NumPids; | ||||
| 79 | unsigned NumHosts; | ||||
| 80 | /* When in-process merging is enabled, this parameter specifies | ||||
| 81 | * the total number of profile data files shared by all the processes | ||||
| 82 | * spawned from the same binary. By default the value is 1. If merging | ||||
| 83 | * is not enabled, its value should be 0. This parameter is specified | ||||
| 84 | * by the %[0-9]m specifier. For instance %2m enables merging using | ||||
| 85 | * 2 profile data files. %1m is equivalent to %m. Also %m specifier | ||||
| 86 | * can only appear once at the end of the name pattern. */ | ||||
| 87 | unsigned MergePoolSize; | ||||
| 88 | ProfileNameSpecifier PNS; | ||||
| 89 | } lprofFilename; | ||||
| 90 | |||||
| 91 | static lprofFilename lprofCurFilename = {0, 0, 0, {0}, NULL((void*)0), | ||||
| 92 | {0}, 0, 0, 0, PNS_unknown}; | ||||
| 93 | |||||
| 94 | static int ProfileMergeRequested = 0; | ||||
| 95 | static int isProfileMergeRequested() { return ProfileMergeRequested; } | ||||
| 96 | static void setProfileMergeRequested(int EnableMerge) { | ||||
| 97 | ProfileMergeRequested = EnableMerge; | ||||
| 98 | } | ||||
| 99 | |||||
| 100 | static FILE *ProfileFile = NULL((void*)0); | ||||
| 101 | static FILE *getProfileFile() { return ProfileFile; } | ||||
| 102 | static void setProfileFile(FILE *File) { ProfileFile = File; } | ||||
| 103 | |||||
| 104 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) void __llvm_profile_set_file_object(FILE *File, | ||||
| 105 | int EnableMerge) { | ||||
| 106 | if (__llvm_profile_is_continuous_mode_enabled()) { | ||||
| 107 | PROF_WARN("__llvm_profile_set_file_object(fd=%d) not supported, because "fprintf(stderr, "LLVM Profile Warning: " "__llvm_profile_set_file_object(fd=%d) not supported, because " "continuous sync mode (%%c) is enabled", fileno(File)); | ||||
| 108 | "continuous sync mode (%%c) is enabled",fprintf(stderr, "LLVM Profile Warning: " "__llvm_profile_set_file_object(fd=%d) not supported, because " "continuous sync mode (%%c) is enabled", fileno(File)); | ||||
| 109 | fileno(File))fprintf(stderr, "LLVM Profile Warning: " "__llvm_profile_set_file_object(fd=%d) not supported, because " "continuous sync mode (%%c) is enabled", fileno(File));; | ||||
| 110 | return; | ||||
| 111 | } | ||||
| 112 | setProfileFile(File); | ||||
| 113 | setProfileMergeRequested(EnableMerge); | ||||
| 114 | } | ||||
| 115 | |||||
| 116 | static int getCurFilenameLength(); | ||||
| 117 | static const char *getCurFilename(char *FilenameBuf, int ForceUseBuf); | ||||
| 118 | static unsigned doMerging() { | ||||
| 119 | return lprofCurFilename.MergePoolSize || isProfileMergeRequested(); | ||||
| 120 | } | ||||
| 121 | |||||
| 122 | /* Return 1 if there is an error, otherwise return 0. */ | ||||
| 123 | static uint32_t fileWriter(ProfDataWriter *This, ProfDataIOVec *IOVecs, | ||||
| 124 | uint32_t NumIOVecs) { | ||||
| 125 | uint32_t I; | ||||
| 126 | FILE *File = (FILE *)This->WriterCtx; | ||||
| 127 | char Zeroes[sizeof(uint64_t)] = {0}; | ||||
| 128 | for (I = 0; I < NumIOVecs; I++) { | ||||
| 129 | if (IOVecs[I].Data) { | ||||
| 130 | if (fwrite(IOVecs[I].Data, IOVecs[I].ElmSize, IOVecs[I].NumElm, File) != | ||||
| 131 | IOVecs[I].NumElm) | ||||
| 132 | return 1; | ||||
| 133 | } else if (IOVecs[I].UseZeroPadding) { | ||||
| 134 | size_t BytesToWrite = IOVecs[I].ElmSize * IOVecs[I].NumElm; | ||||
| 135 | while (BytesToWrite > 0) { | ||||
| 136 | size_t PartialWriteLen = | ||||
| 137 | (sizeof(uint64_t) > BytesToWrite) ? BytesToWrite : sizeof(uint64_t); | ||||
| 138 | if (fwrite(Zeroes, sizeof(uint8_t), PartialWriteLen, File) != | ||||
| 139 | PartialWriteLen) { | ||||
| 140 | return 1; | ||||
| 141 | } | ||||
| 142 | BytesToWrite -= PartialWriteLen; | ||||
| 143 | } | ||||
| 144 | } else { | ||||
| 145 | if (fseek(File, IOVecs[I].ElmSize * IOVecs[I].NumElm, SEEK_CUR1) == -1) | ||||
| 146 | return 1; | ||||
| 147 | } | ||||
| 148 | } | ||||
| 149 | return 0; | ||||
| 150 | } | ||||
| 151 | |||||
| 152 | /* TODO: make buffer size controllable by an internal option, and compiler can pass the size | ||||
| 153 | to runtime via a variable. */ | ||||
| 154 | static uint32_t orderFileWriter(FILE *File, const uint32_t *DataStart) { | ||||
| 155 | if (fwrite(DataStart, sizeof(uint32_t), INSTR_ORDER_FILE_BUFFER_SIZE131072, File) != | ||||
| 156 | INSTR_ORDER_FILE_BUFFER_SIZE131072) | ||||
| 157 | return 1; | ||||
| 158 | return 0; | ||||
| 159 | } | ||||
| 160 | |||||
| 161 | static void initFileWriter(ProfDataWriter *This, FILE *File) { | ||||
| 162 | This->Write = fileWriter; | ||||
| 163 | This->WriterCtx = File; | ||||
| 164 | } | ||||
| 165 | |||||
| 166 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) ProfBufferIO * | ||||
| 167 | lprofCreateBufferIOInternal(void *File, uint32_t BufferSz) { | ||||
| 168 | FreeHook = &free; | ||||
| 169 | DynamicBufferIOBuffer = (uint8_t *)calloc(BufferSz, 1); | ||||
| 170 | VPBufferSize = BufferSz; | ||||
| 171 | ProfDataWriter *fileWriter = | ||||
| 172 | (ProfDataWriter *)calloc(sizeof(ProfDataWriter), 1); | ||||
| 173 | initFileWriter(fileWriter, File); | ||||
| 174 | ProfBufferIO *IO = lprofCreateBufferIO(fileWriter); | ||||
| 175 | IO->OwnFileWriter = 1; | ||||
| 176 | return IO; | ||||
| 177 | } | ||||
| 178 | |||||
| 179 | static void setupIOBuffer() { | ||||
| 180 | const char *BufferSzStr = 0; | ||||
| 181 | BufferSzStr = getenv("LLVM_VP_BUFFER_SIZE"); | ||||
| 182 | if (BufferSzStr && BufferSzStr[0]) { | ||||
| 183 | VPBufferSize = atoi(BufferSzStr); | ||||
| 184 | DynamicBufferIOBuffer = (uint8_t *)calloc(VPBufferSize, 1); | ||||
| 185 | } | ||||
| 186 | } | ||||
| 187 | |||||
| 188 | /* Get the size of the profile file. If there are any errors, print the | ||||
| 189 | * message under the assumption that the profile is being read for merging | ||||
| 190 | * purposes, and return -1. Otherwise return the file size in the inout param | ||||
| 191 | * \p ProfileFileSize. */ | ||||
| 192 | static int getProfileFileSizeForMerging(FILE *ProfileFile, | ||||
| 193 | uint64_t *ProfileFileSize) { | ||||
| 194 | if (fseek(ProfileFile, 0L, SEEK_END2) == -1) { | ||||
| 195 | PROF_ERR("Unable to merge profile data, unable to get size: %s\n",fprintf(stderr, "LLVM Profile Error: " "Unable to merge profile data, unable to get size: %s\n" , strerror((*__errno_location ()))); | ||||
| 196 | strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Unable to merge profile data, unable to get size: %s\n" , strerror((*__errno_location ())));; | ||||
| 197 | return -1; | ||||
| 198 | } | ||||
| 199 | *ProfileFileSize = ftell(ProfileFile); | ||||
| 200 | |||||
| 201 | /* Restore file offset. */ | ||||
| 202 | if (fseek(ProfileFile, 0L, SEEK_SET0) == -1) { | ||||
| 203 | PROF_ERR("Unable to merge profile data, unable to rewind: %s\n",fprintf(stderr, "LLVM Profile Error: " "Unable to merge profile data, unable to rewind: %s\n" , strerror((*__errno_location ()))); | ||||
| 204 | strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Unable to merge profile data, unable to rewind: %s\n" , strerror((*__errno_location ())));; | ||||
| 205 | return -1; | ||||
| 206 | } | ||||
| 207 | |||||
| 208 | if (*ProfileFileSize > 0 && | ||||
| 209 | *ProfileFileSize < sizeof(__llvm_profile_header)) { | ||||
| 210 | PROF_WARN("Unable to merge profile data: %s\n",fprintf(stderr, "LLVM Profile Warning: " "Unable to merge profile data: %s\n" , "source profile file is too small."); | ||||
| 211 | "source profile file is too small.")fprintf(stderr, "LLVM Profile Warning: " "Unable to merge profile data: %s\n" , "source profile file is too small.");; | ||||
| 212 | return -1; | ||||
| 213 | } | ||||
| 214 | return 0; | ||||
| 215 | } | ||||
| 216 | |||||
| 217 | /* mmap() \p ProfileFile for profile merging purposes, assuming that an | ||||
| 218 | * exclusive lock is held on the file and that \p ProfileFileSize is the | ||||
| 219 | * length of the file. Return the mmap'd buffer in the inout variable | ||||
| 220 | * \p ProfileBuffer. Returns -1 on failure. On success, the caller is | ||||
| 221 | * responsible for unmapping the mmap'd buffer in \p ProfileBuffer. */ | ||||
| 222 | static int mmapProfileForMerging(FILE *ProfileFile, uint64_t ProfileFileSize, | ||||
| 223 | char **ProfileBuffer) { | ||||
| 224 | *ProfileBuffer = mmap(NULL((void*)0), ProfileFileSize, PROT_READ0x1, MAP_SHARED0x01 | MAP_FILE0, | ||||
| 225 | fileno(ProfileFile), 0); | ||||
| 226 | if (*ProfileBuffer == MAP_FAILED((void *) -1)) { | ||||
| 227 | PROF_ERR("Unable to merge profile data, mmap failed: %s\n",fprintf(stderr, "LLVM Profile Error: " "Unable to merge profile data, mmap failed: %s\n" , strerror((*__errno_location ()))); | ||||
| 228 | strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Unable to merge profile data, mmap failed: %s\n" , strerror((*__errno_location ())));; | ||||
| 229 | return -1; | ||||
| 230 | } | ||||
| 231 | |||||
| 232 | if (__llvm_profile_check_compatibility(*ProfileBuffer, ProfileFileSize)) { | ||||
| 233 | (void)munmap(*ProfileBuffer, ProfileFileSize); | ||||
| 234 | PROF_WARN("Unable to merge profile data: %s\n",fprintf(stderr, "LLVM Profile Warning: " "Unable to merge profile data: %s\n" , "source profile file is not compatible."); | ||||
| 235 | "source profile file is not compatible.")fprintf(stderr, "LLVM Profile Warning: " "Unable to merge profile data: %s\n" , "source profile file is not compatible.");; | ||||
| 236 | return -1; | ||||
| 237 | } | ||||
| 238 | return 0; | ||||
| 239 | } | ||||
| 240 | |||||
| 241 | /* Read profile data in \c ProfileFile and merge with in-memory | ||||
| 242 | profile counters. Returns -1 if there is fatal error, otheriwse | ||||
| 243 | 0 is returned. Returning 0 does not mean merge is actually | ||||
| 244 | performed. If merge is actually done, *MergeDone is set to 1. | ||||
| 245 | */ | ||||
| 246 | static int doProfileMerging(FILE *ProfileFile, int *MergeDone) { | ||||
| 247 | uint64_t ProfileFileSize; | ||||
| 248 | char *ProfileBuffer; | ||||
| 249 | |||||
| 250 | /* Get the size of the profile on disk. */ | ||||
| 251 | if (getProfileFileSizeForMerging(ProfileFile, &ProfileFileSize) == -1) | ||||
| 252 | return -1; | ||||
| 253 | |||||
| 254 | /* Nothing to merge. */ | ||||
| 255 | if (!ProfileFileSize) | ||||
| 256 | return 0; | ||||
| 257 | |||||
| 258 | /* mmap() the profile and check that it is compatible with the data in | ||||
| 259 | * the current image. */ | ||||
| 260 | if (mmapProfileForMerging(ProfileFile, ProfileFileSize, &ProfileBuffer) == -1) | ||||
| 261 | return -1; | ||||
| 262 | |||||
| 263 | /* Now start merging */ | ||||
| 264 | __llvm_profile_merge_from_buffer(ProfileBuffer, ProfileFileSize); | ||||
| 265 | |||||
| 266 | // Truncate the file in case merging of value profile did not happend to | ||||
| 267 | // prevent from leaving garbage data at the end of the profile file. | ||||
| 268 | (void)COMPILER_RT_FTRUNCATE(ProfileFile,ftruncate(fileno(ProfileFile), __llvm_profile_get_size_for_buffer ()) | ||||
| 269 | __llvm_profile_get_size_for_buffer())ftruncate(fileno(ProfileFile), __llvm_profile_get_size_for_buffer ()); | ||||
| 270 | |||||
| 271 | (void)munmap(ProfileBuffer, ProfileFileSize); | ||||
| 272 | *MergeDone = 1; | ||||
| 273 | |||||
| 274 | return 0; | ||||
| 275 | } | ||||
| 276 | |||||
| 277 | /* Create the directory holding the file, if needed. */ | ||||
| 278 | static void createProfileDir(const char *Filename) { | ||||
| 279 | size_t Length = strlen(Filename); | ||||
| 280 | if (lprofFindFirstDirSeparator(Filename)) { | ||||
| 281 | char *Copy = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | ||||
| 282 | strncpy(Copy, Filename, Length + 1)__builtin_strncpy (Copy, Filename, Length + 1); | ||||
| 283 | __llvm_profile_recursive_mkdir(Copy); | ||||
| 284 | } | ||||
| 285 | } | ||||
| 286 | |||||
| 287 | /* Open the profile data for merging. It opens the file in r+b mode with | ||||
| 288 | * file locking. If the file has content which is compatible with the | ||||
| 289 | * current process, it also reads in the profile data in the file and merge | ||||
| 290 | * it with in-memory counters. After the profile data is merged in memory, | ||||
| 291 | * the original profile data is truncated and gets ready for the profile | ||||
| 292 | * dumper. With profile merging enabled, each executable as well as any of | ||||
| 293 | * its instrumented shared libraries dump profile data into their own data file. | ||||
| 294 | */ | ||||
| 295 | static FILE *openFileForMerging(const char *ProfileFileName, int *MergeDone) { | ||||
| 296 | FILE *ProfileFile = NULL((void*)0); | ||||
| 297 | int rc; | ||||
| 298 | |||||
| 299 | ProfileFile = getProfileFile(); | ||||
| 300 | if (ProfileFile) { | ||||
| 301 | lprofLockFileHandle(ProfileFile); | ||||
| 302 | } else { | ||||
| 303 | createProfileDir(ProfileFileName); | ||||
| 304 | ProfileFile = lprofOpenFileEx(ProfileFileName); | ||||
| 305 | } | ||||
| 306 | if (!ProfileFile) | ||||
| 307 | return NULL((void*)0); | ||||
| 308 | |||||
| 309 | rc = doProfileMerging(ProfileFile, MergeDone); | ||||
| 310 | if (rc || (!*MergeDone && COMPILER_RT_FTRUNCATE(ProfileFile, 0L)ftruncate(fileno(ProfileFile), 0L)) || | ||||
| 311 | fseek(ProfileFile, 0L, SEEK_SET0) == -1) { | ||||
| 312 | PROF_ERR("Profile Merging of file %s failed: %s\n", ProfileFileName,fprintf(stderr, "LLVM Profile Error: " "Profile Merging of file %s failed: %s\n" , ProfileFileName, strerror((*__errno_location ()))); | ||||
| 313 | strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Profile Merging of file %s failed: %s\n" , ProfileFileName, strerror((*__errno_location ())));; | ||||
| 314 | fclose(ProfileFile); | ||||
| 315 | return NULL((void*)0); | ||||
| 316 | } | ||||
| 317 | return ProfileFile; | ||||
| 318 | } | ||||
| 319 | |||||
| 320 | static FILE *getFileObject(const char *OutputName) { | ||||
| 321 | FILE *File; | ||||
| 322 | File = getProfileFile(); | ||||
| 323 | if (File != NULL((void*)0)) { | ||||
| 324 | return File; | ||||
| 325 | } | ||||
| 326 | |||||
| 327 | return fopen(OutputName, "ab"); | ||||
| 328 | } | ||||
| 329 | |||||
| 330 | /* Write profile data to file \c OutputName. */ | ||||
| 331 | static int writeFile(const char *OutputName) { | ||||
| 332 | int RetVal; | ||||
| 333 | FILE *OutputFile; | ||||
| 334 | |||||
| 335 | int MergeDone = 0; | ||||
| 336 | VPMergeHook = &lprofMergeValueProfData; | ||||
| 337 | if (doMerging()) | ||||
| 338 | OutputFile = openFileForMerging(OutputName, &MergeDone); | ||||
| 339 | else | ||||
| 340 | OutputFile = getFileObject(OutputName); | ||||
| 341 | |||||
| 342 | if (!OutputFile) | ||||
| 343 | return -1; | ||||
| 344 | |||||
| 345 | FreeHook = &free; | ||||
| 346 | setupIOBuffer(); | ||||
| 347 | ProfDataWriter fileWriter; | ||||
| 348 | initFileWriter(&fileWriter, OutputFile); | ||||
| 349 | RetVal = lprofWriteData(&fileWriter, lprofGetVPDataReader(), MergeDone); | ||||
| 350 | |||||
| 351 | if (OutputFile == getProfileFile()) { | ||||
| 352 | fflush(OutputFile); | ||||
| 353 | if (doMerging()) { | ||||
| 354 | lprofUnlockFileHandle(OutputFile); | ||||
| 355 | } | ||||
| 356 | } else { | ||||
| 357 | fclose(OutputFile); | ||||
| 358 | } | ||||
| 359 | |||||
| 360 | return RetVal; | ||||
| 361 | } | ||||
| 362 | |||||
| 363 | /* Write order data to file \c OutputName. */ | ||||
| 364 | static int writeOrderFile(const char *OutputName) { | ||||
| 365 | int RetVal; | ||||
| 366 | FILE *OutputFile; | ||||
| 367 | |||||
| 368 | OutputFile = fopen(OutputName, "w"); | ||||
| 369 | |||||
| 370 | if (!OutputFile) { | ||||
| 371 | PROF_WARN("can't open file with mode ab: %s\n", OutputName)fprintf(stderr, "LLVM Profile Warning: " "can't open file with mode ab: %s\n" , OutputName);; | ||||
| 372 | return -1; | ||||
| 373 | } | ||||
| 374 | |||||
| 375 | FreeHook = &free; | ||||
| 376 | setupIOBuffer(); | ||||
| 377 | const uint32_t *DataBegin = __llvm_profile_begin_orderfile(); | ||||
| 378 | RetVal = orderFileWriter(OutputFile, DataBegin); | ||||
| 379 | |||||
| 380 | fclose(OutputFile); | ||||
| 381 | return RetVal; | ||||
| 382 | } | ||||
| 383 | |||||
| 384 | #define LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE" "__LLVM_PROFILE_RT_INIT_ONCE" | ||||
| 385 | |||||
| 386 | static void truncateCurrentFile(void) { | ||||
| 387 | const char *Filename; | ||||
| 388 | char *FilenameBuf; | ||||
| 389 | FILE *File; | ||||
| 390 | int Length; | ||||
| 391 | |||||
| 392 | Length = getCurFilenameLength(); | ||||
| 393 | FilenameBuf = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | ||||
| 394 | Filename = getCurFilename(FilenameBuf, 0); | ||||
| 395 | if (!Filename) | ||||
| 396 | return; | ||||
| 397 | |||||
| 398 | /* Only create the profile directory and truncate an existing profile once. | ||||
| 399 | * In continuous mode, this is necessary, as the profile is written-to by the | ||||
| 400 | * runtime initializer. */ | ||||
| 401 | int initialized = getenv(LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE") != NULL((void*)0); | ||||
| 402 | if (initialized) | ||||
| 403 | return; | ||||
| 404 | #if defined(_WIN32) | ||||
| 405 | _putenv(LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE" "=" LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE"); | ||||
| 406 | #else | ||||
| 407 | setenv(LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE", LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE", 1); | ||||
| 408 | #endif | ||||
| 409 | |||||
| 410 | /* Create the profile dir (even if online merging is enabled), so that | ||||
| 411 | * the profile file can be set up if continuous mode is enabled. */ | ||||
| 412 | createProfileDir(Filename); | ||||
| 413 | |||||
| 414 | /* By pass file truncation to allow online raw profile merging. */ | ||||
| 415 | if (lprofCurFilename.MergePoolSize) | ||||
| 416 | return; | ||||
| 417 | |||||
| 418 | /* Truncate the file. Later we'll reopen and append. */ | ||||
| 419 | File = fopen(Filename, "w"); | ||||
| 420 | if (!File) | ||||
| 421 | return; | ||||
| 422 | fclose(File); | ||||
| 423 | } | ||||
| 424 | |||||
| 425 | #if !defined(__Fuchsia__) && !defined(_WIN32) | ||||
| 426 | static void assertIsZero(int *i) { | ||||
| 427 | if (*i) | ||||
| 428 | PROF_WARN("Expected flag to be 0, but got: %d\n", *i)fprintf(stderr, "LLVM Profile Warning: " "Expected flag to be 0, but got: %d\n" , *i);; | ||||
| 429 | } | ||||
| 430 | |||||
| 431 | /* Write a partial profile to \p Filename, which is required to be backed by | ||||
| 432 | * the open file object \p File. */ | ||||
| 433 | static int writeProfileWithFileObject(const char *Filename, FILE *File) { | ||||
| 434 | setProfileFile(File); | ||||
| 435 | int rc = writeFile(Filename); | ||||
| 436 | if (rc) | ||||
| 437 | PROF_ERR("Failed to write file \"%s\": %s\n", Filename, strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Failed to write file \"%s\": %s\n" , Filename, strerror((*__errno_location ())));; | ||||
| 438 | setProfileFile(NULL((void*)0)); | ||||
| 439 | return rc; | ||||
| 440 | } | ||||
| 441 | |||||
| 442 | /* Unlock the profile \p File and clear the unlock flag. */ | ||||
| 443 | static void unlockProfile(int *ProfileRequiresUnlock, FILE *File) { | ||||
| 444 | if (!*ProfileRequiresUnlock) { | ||||
| 445 | PROF_WARN("%s", "Expected to require profile unlock\n")fprintf(stderr, "LLVM Profile Warning: " "%s", "Expected to require profile unlock\n" );; | ||||
| 446 | } | ||||
| 447 | lprofUnlockFileHandle(File); | ||||
| 448 | *ProfileRequiresUnlock = 0; | ||||
| 449 | } | ||||
| 450 | #endif // !defined(__Fuchsia__) && !defined(_WIN32) | ||||
| 451 | |||||
| 452 | static int writeMMappedFile(FILE *OutputFile, char **Profile) { | ||||
| 453 | if (!OutputFile) | ||||
| 454 | return -1; | ||||
| 455 | |||||
| 456 | /* Write the data into a file. */ | ||||
| 457 | setupIOBuffer(); | ||||
| 458 | ProfDataWriter fileWriter; | ||||
| 459 | initFileWriter(&fileWriter, OutputFile); | ||||
| 460 | if (lprofWriteData(&fileWriter, NULL((void*)0), 0)) { | ||||
| 461 | PROF_ERR("Failed to write profile: %s\n", strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Failed to write profile: %s\n" , strerror((*__errno_location ())));; | ||||
| 462 | return -1; | ||||
| 463 | } | ||||
| 464 | fflush(OutputFile); | ||||
| 465 | |||||
| 466 | /* Get the file size. */ | ||||
| 467 | uint64_t FileSize = ftell(OutputFile); | ||||
| 468 | |||||
| 469 | /* Map the profile. */ | ||||
| 470 | *Profile = (char *)mmap( | ||||
| 471 | NULL((void*)0), FileSize, PROT_READ0x1 | PROT_WRITE0x2, MAP_SHARED0x01, fileno(OutputFile), 0); | ||||
| 472 | if (*Profile == MAP_FAILED((void *) -1)) { | ||||
| 473 | PROF_ERR("Unable to mmap profile: %s\n", strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Unable to mmap profile: %s\n" , strerror((*__errno_location ())));; | ||||
| 474 | return -1; | ||||
| 475 | } | ||||
| 476 | |||||
| 477 | return 0; | ||||
| 478 | } | ||||
| 479 | |||||
| 480 | static void relocateCounters(void) { | ||||
| 481 | if (!__llvm_profile_is_continuous_mode_enabled() || | ||||
| 482 | !lprofRuntimeCounterRelocation()) | ||||
| 483 | return; | ||||
| 484 | |||||
| 485 | /* Get the sizes of various profile data sections. Taken from | ||||
| 486 | * __llvm_profile_get_size_for_buffer(). */ | ||||
| 487 | const __llvm_profile_data *DataBegin = __llvm_profile_begin_data(); | ||||
| 488 | const __llvm_profile_data *DataEnd = __llvm_profile_end_data(); | ||||
| 489 | uint64_t DataSize = __llvm_profile_get_data_size(DataBegin, DataEnd); | ||||
| 490 | const uint64_t CountersOffset = sizeof(__llvm_profile_header) + | ||||
| 491 | (DataSize * sizeof(__llvm_profile_data)); | ||||
| 492 | |||||
| 493 | int Length = getCurFilenameLength(); | ||||
| 494 | char *FilenameBuf = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | ||||
| 495 | const char *Filename = getCurFilename(FilenameBuf, 0); | ||||
| 496 | if (!Filename) | ||||
| 497 | return; | ||||
| 498 | |||||
| 499 | FILE *File = NULL((void*)0); | ||||
| 500 | char *Profile = NULL((void*)0); | ||||
| 501 | |||||
| 502 | if (!doMerging()) { | ||||
| 503 | File = fopen(Filename, "w+b"); | ||||
| 504 | if (!File) | ||||
| 505 | return; | ||||
| 506 | |||||
| 507 | if (writeMMappedFile(File, &Profile) == -1) { | ||||
| 508 | fclose(File); | ||||
| 509 | return; | ||||
| 510 | } | ||||
| 511 | } else { | ||||
| 512 | File = lprofOpenFileEx(Filename); | ||||
| 513 | if (!File) | ||||
| 514 | return; | ||||
| 515 | |||||
| 516 | uint64_t ProfileFileSize = 0; | ||||
| 517 | if (getProfileFileSizeForMerging(File, &ProfileFileSize) == -1) { | ||||
| 518 | lprofUnlockFileHandle(File); | ||||
| 519 | fclose(File); | ||||
| 520 | return; | ||||
| 521 | } | ||||
| 522 | |||||
| 523 | if (!ProfileFileSize) { | ||||
| 524 | if (writeMMappedFile(File, &Profile) == -1) { | ||||
| 525 | fclose(File); | ||||
| 526 | return; | ||||
| 527 | } | ||||
| 528 | } else { | ||||
| 529 | /* The merged profile has a non-zero length. Check that it is compatible | ||||
| 530 | * with the data in this process. */ | ||||
| 531 | if (mmapProfileForMerging(File, ProfileFileSize, &Profile) == -1) { | ||||
| 532 | fclose(File); | ||||
| 533 | return; | ||||
| 534 | } | ||||
| 535 | } | ||||
| 536 | |||||
| 537 | lprofUnlockFileHandle(File); | ||||
| 538 | } | ||||
| 539 | |||||
| 540 | /* Update the profile fields based on the current mapping. */ | ||||
| 541 | __llvm_profile_counter_bias = (intptr_t)Profile - | ||||
| 542 | (uintptr_t)__llvm_profile_begin_counters() + CountersOffset; | ||||
| 543 | } | ||||
| 544 | |||||
| 545 | static void initializeProfileForContinuousMode(void) { | ||||
| 546 | if (!__llvm_profile_is_continuous_mode_enabled()) | ||||
| 547 | return; | ||||
| 548 | |||||
| 549 | #if defined(__Fuchsia__) || defined(_WIN32) | ||||
| 550 | PROF_ERR("%s\n", "Continuous mode not yet supported on Fuchsia or Windows.")fprintf(stderr, "LLVM Profile Error: " "%s\n", "Continuous mode not yet supported on Fuchsia or Windows." );; | ||||
| 551 | #else // defined(__Fuchsia__) || defined(_WIN32) | ||||
| 552 | /* Get the sizes of various profile data sections. Taken from | ||||
| 553 | * __llvm_profile_get_size_for_buffer(). */ | ||||
| 554 | const __llvm_profile_data *DataBegin = __llvm_profile_begin_data(); | ||||
| 555 | const __llvm_profile_data *DataEnd = __llvm_profile_end_data(); | ||||
| 556 | const uint64_t *CountersBegin = __llvm_profile_begin_counters(); | ||||
| 557 | const uint64_t *CountersEnd = __llvm_profile_end_counters(); | ||||
| 558 | const char *NamesBegin = __llvm_profile_begin_names(); | ||||
| 559 | const char *NamesEnd = __llvm_profile_end_names(); | ||||
| 560 | const uint64_t NamesSize = (NamesEnd - NamesBegin) * sizeof(char); | ||||
| 561 | uint64_t DataSize = __llvm_profile_get_data_size(DataBegin, DataEnd); | ||||
| 562 | uint64_t CountersSize = CountersEnd - CountersBegin; | ||||
| 563 | |||||
| 564 | /* Check that the counter and data sections in this image are page-aligned. */ | ||||
| 565 | unsigned PageSize = getpagesize(); | ||||
| 566 | if ((intptr_t)CountersBegin % PageSize != 0) { | ||||
| 567 | PROF_ERR("Counters section not page-aligned (start = %p, pagesz = %u).\n",fprintf(stderr, "LLVM Profile Error: " "Counters section not page-aligned (start = %p, pagesz = %u).\n" , CountersBegin, PageSize); | ||||
| 568 | CountersBegin, PageSize)fprintf(stderr, "LLVM Profile Error: " "Counters section not page-aligned (start = %p, pagesz = %u).\n" , CountersBegin, PageSize);; | ||||
| 569 | return; | ||||
| 570 | } | ||||
| 571 | if ((intptr_t)DataBegin % PageSize != 0) { | ||||
| 572 | PROF_ERR("Data section not page-aligned (start = %p, pagesz = %u).\n",fprintf(stderr, "LLVM Profile Error: " "Data section not page-aligned (start = %p, pagesz = %u).\n" , DataBegin, PageSize); | ||||
| 573 | DataBegin, PageSize)fprintf(stderr, "LLVM Profile Error: " "Data section not page-aligned (start = %p, pagesz = %u).\n" , DataBegin, PageSize);; | ||||
| 574 | return; | ||||
| 575 | } | ||||
| 576 | |||||
| 577 | int Length = getCurFilenameLength(); | ||||
| 578 | char *FilenameBuf = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | ||||
| 579 | const char *Filename = getCurFilename(FilenameBuf, 0); | ||||
| 580 | if (!Filename) | ||||
| 581 | return; | ||||
| 582 | |||||
| 583 | FILE *File = NULL((void*)0); | ||||
| 584 | off_t CurrentFileOffset = 0; | ||||
| 585 | off_t OffsetModPage = 0; | ||||
| 586 | |||||
| 587 | /* Whether an exclusive lock on the profile must be dropped after init. | ||||
| 588 | * Use a cleanup to warn if the unlock does not occur. */ | ||||
| 589 | COMPILER_RT_CLEANUP(assertIsZero)__attribute__((cleanup(assertIsZero))) int ProfileRequiresUnlock = 0; | ||||
| 590 | |||||
| 591 | if (!doMerging()) { | ||||
| 592 | /* We are not merging profiles, so open the raw profile in append mode. */ | ||||
| 593 | File = fopen(Filename, "a+b"); | ||||
| 594 | if (!File) | ||||
| 595 | return; | ||||
| 596 | |||||
| 597 | /* Check that the offset within the file is page-aligned. */ | ||||
| 598 | CurrentFileOffset = ftello(File); | ||||
| 599 | OffsetModPage = CurrentFileOffset % PageSize; | ||||
| 600 | if (OffsetModPage != 0) { | ||||
| 601 | PROF_ERR("Continuous counter sync mode is enabled, but raw profile is not"fprintf(stderr, "LLVM Profile Error: " "Continuous counter sync mode is enabled, but raw profile is not" "page-aligned. CurrentFileOffset = %" "ll" "u" ", pagesz = %u.\n" , (uint64_t)CurrentFileOffset, PageSize); | ||||
| 602 | "page-aligned. CurrentFileOffset = %" PRIu64 ", pagesz = %u.\n",fprintf(stderr, "LLVM Profile Error: " "Continuous counter sync mode is enabled, but raw profile is not" "page-aligned. CurrentFileOffset = %" "ll" "u" ", pagesz = %u.\n" , (uint64_t)CurrentFileOffset, PageSize); | ||||
| 603 | (uint64_t)CurrentFileOffset, PageSize)fprintf(stderr, "LLVM Profile Error: " "Continuous counter sync mode is enabled, but raw profile is not" "page-aligned. CurrentFileOffset = %" "ll" "u" ", pagesz = %u.\n" , (uint64_t)CurrentFileOffset, PageSize);; | ||||
| 604 | return; | ||||
| 605 | } | ||||
| 606 | |||||
| 607 | /* Grow the profile so that mmap() can succeed. Leak the file handle, as | ||||
| 608 | * the file should stay open. */ | ||||
| 609 | if (writeProfileWithFileObject(Filename, File) != 0) | ||||
| 610 | return; | ||||
| 611 | } else { | ||||
| 612 | /* We are merging profiles. Map the counter section as shared memory into | ||||
| 613 | * the profile, i.e. into each participating process. An increment in one | ||||
| 614 | * process should be visible to every other process with the same counter | ||||
| 615 | * section mapped. */ | ||||
| 616 | File = lprofOpenFileEx(Filename); | ||||
| 617 | if (!File) | ||||
| 618 | return; | ||||
| 619 | |||||
| 620 | ProfileRequiresUnlock = 1; | ||||
| 621 | |||||
| 622 | uint64_t ProfileFileSize; | ||||
| 623 | if (getProfileFileSizeForMerging(File, &ProfileFileSize) == -1) | ||||
| 624 | return unlockProfile(&ProfileRequiresUnlock, File); | ||||
| 625 | |||||
| 626 | if (ProfileFileSize == 0) { | ||||
| 627 | /* Grow the profile so that mmap() can succeed. Leak the file handle, as | ||||
| 628 | * the file should stay open. */ | ||||
| 629 | if (writeProfileWithFileObject(Filename, File) != 0) | ||||
| 630 | return unlockProfile(&ProfileRequiresUnlock, File); | ||||
| 631 | } else { | ||||
| 632 | /* The merged profile has a non-zero length. Check that it is compatible | ||||
| 633 | * with the data in this process. */ | ||||
| 634 | char *ProfileBuffer; | ||||
| 635 | if (mmapProfileForMerging(File, ProfileFileSize, &ProfileBuffer) == -1 || | ||||
| 636 | munmap(ProfileBuffer, ProfileFileSize) == -1) | ||||
| 637 | return unlockProfile(&ProfileRequiresUnlock, File); | ||||
| 638 | } | ||||
| 639 | } | ||||
| 640 | |||||
| 641 | int Fileno = fileno(File); | ||||
| 642 | |||||
| 643 | /* Determine how much padding is needed before/after the counters and after | ||||
| 644 | * the names. */ | ||||
| 645 | uint64_t PaddingBytesBeforeCounters, PaddingBytesAfterCounters, | ||||
| 646 | PaddingBytesAfterNames; | ||||
| 647 | __llvm_profile_get_padding_sizes_for_counters( | ||||
| 648 | DataSize, CountersSize, NamesSize, &PaddingBytesBeforeCounters, | ||||
| 649 | &PaddingBytesAfterCounters, &PaddingBytesAfterNames); | ||||
| 650 | |||||
| 651 | uint64_t PageAlignedCountersLength = | ||||
| 652 | (CountersSize * sizeof(uint64_t)) + PaddingBytesAfterCounters; | ||||
| 653 | uint64_t FileOffsetToCounters = | ||||
| 654 | CurrentFileOffset + sizeof(__llvm_profile_header) + | ||||
| 655 | (DataSize * sizeof(__llvm_profile_data)) + PaddingBytesBeforeCounters; | ||||
| 656 | |||||
| 657 | uint64_t *CounterMmap = (uint64_t *)mmap( | ||||
| 658 | (void *)CountersBegin, PageAlignedCountersLength, PROT_READ0x1 | PROT_WRITE0x2, | ||||
| 659 | MAP_FIXED0x10 | MAP_SHARED0x01, Fileno, FileOffsetToCounters); | ||||
| 660 | if (CounterMmap != CountersBegin) { | ||||
| 661 | PROF_ERR(fprintf(stderr, "LLVM Profile Error: " "Continuous counter sync mode is enabled, but mmap() failed (%s).\n" " - CountersBegin: %p\n" " - PageAlignedCountersLength: %" "ll" "u" "\n" " - Fileno: %d\n" " - FileOffsetToCounters: %" "ll" "u" "\n", strerror((*__errno_location ())), CountersBegin , PageAlignedCountersLength, Fileno, FileOffsetToCounters); | ||||
| 662 | "Continuous counter sync mode is enabled, but mmap() failed (%s).\n"fprintf(stderr, "LLVM Profile Error: " "Continuous counter sync mode is enabled, but mmap() failed (%s).\n" " - CountersBegin: %p\n" " - PageAlignedCountersLength: %" "ll" "u" "\n" " - Fileno: %d\n" " - FileOffsetToCounters: %" "ll" "u" "\n", strerror((*__errno_location ())), CountersBegin , PageAlignedCountersLength, Fileno, FileOffsetToCounters); | ||||
| 663 | " - CountersBegin: %p\n"fprintf(stderr, "LLVM Profile Error: " "Continuous counter sync mode is enabled, but mmap() failed (%s).\n" " - CountersBegin: %p\n" " - PageAlignedCountersLength: %" "ll" "u" "\n" " - Fileno: %d\n" " - FileOffsetToCounters: %" "ll" "u" "\n", strerror((*__errno_location ())), CountersBegin , PageAlignedCountersLength, Fileno, FileOffsetToCounters); | ||||
| 664 | " - PageAlignedCountersLength: %" PRIu64 "\n"fprintf(stderr, "LLVM Profile Error: " "Continuous counter sync mode is enabled, but mmap() failed (%s).\n" " - CountersBegin: %p\n" " - PageAlignedCountersLength: %" "ll" "u" "\n" " - Fileno: %d\n" " - FileOffsetToCounters: %" "ll" "u" "\n", strerror((*__errno_location ())), CountersBegin , PageAlignedCountersLength, Fileno, FileOffsetToCounters); | ||||
| 665 | " - Fileno: %d\n"fprintf(stderr, "LLVM Profile Error: " "Continuous counter sync mode is enabled, but mmap() failed (%s).\n" " - CountersBegin: %p\n" " - PageAlignedCountersLength: %" "ll" "u" "\n" " - Fileno: %d\n" " - FileOffsetToCounters: %" "ll" "u" "\n", strerror((*__errno_location ())), CountersBegin , PageAlignedCountersLength, Fileno, FileOffsetToCounters); | ||||
| 666 | " - FileOffsetToCounters: %" PRIu64 "\n",fprintf(stderr, "LLVM Profile Error: " "Continuous counter sync mode is enabled, but mmap() failed (%s).\n" " - CountersBegin: %p\n" " - PageAlignedCountersLength: %" "ll" "u" "\n" " - Fileno: %d\n" " - FileOffsetToCounters: %" "ll" "u" "\n", strerror((*__errno_location ())), CountersBegin , PageAlignedCountersLength, Fileno, FileOffsetToCounters); | ||||
| 667 | strerror(errno), CountersBegin, PageAlignedCountersLength, Fileno,fprintf(stderr, "LLVM Profile Error: " "Continuous counter sync mode is enabled, but mmap() failed (%s).\n" " - CountersBegin: %p\n" " - PageAlignedCountersLength: %" "ll" "u" "\n" " - Fileno: %d\n" " - FileOffsetToCounters: %" "ll" "u" "\n", strerror((*__errno_location ())), CountersBegin , PageAlignedCountersLength, Fileno, FileOffsetToCounters); | ||||
| 668 | FileOffsetToCounters)fprintf(stderr, "LLVM Profile Error: " "Continuous counter sync mode is enabled, but mmap() failed (%s).\n" " - CountersBegin: %p\n" " - PageAlignedCountersLength: %" "ll" "u" "\n" " - Fileno: %d\n" " - FileOffsetToCounters: %" "ll" "u" "\n", strerror((*__errno_location ())), CountersBegin , PageAlignedCountersLength, Fileno, FileOffsetToCounters);; | ||||
| 669 | } | ||||
| 670 | |||||
| 671 | if (ProfileRequiresUnlock) | ||||
| 672 | unlockProfile(&ProfileRequiresUnlock, File); | ||||
| 673 | #endif // defined(__Fuchsia__) || defined(_WIN32) | ||||
| 674 | } | ||||
| 675 | |||||
| 676 | static const char *DefaultProfileName = "default.profraw"; | ||||
| 677 | static void resetFilenameToDefault(void) { | ||||
| 678 | if (lprofCurFilename.FilenamePat && lprofCurFilename.OwnsFilenamePat) { | ||||
| 679 | free((void *)lprofCurFilename.FilenamePat); | ||||
| 680 | } | ||||
| 681 | memset(&lprofCurFilename, 0, sizeof(lprofCurFilename)); | ||||
| 682 | lprofCurFilename.FilenamePat = DefaultProfileName; | ||||
| 683 | lprofCurFilename.PNS = PNS_default; | ||||
| 684 | } | ||||
| 685 | |||||
| 686 | static unsigned getMergePoolSize(const char *FilenamePat, int *I) { | ||||
| 687 | unsigned J = 0, Num = 0; | ||||
| 688 | for (;; ++J) { | ||||
| 689 | char C = FilenamePat[*I + J]; | ||||
| 690 | if (C == 'm') { | ||||
| 691 | *I += J; | ||||
| 692 | return Num ? Num : 1; | ||||
| 693 | } | ||||
| 694 | if (C < '0' || C > '9') | ||||
| 695 | break; | ||||
| 696 | Num = Num * 10 + C - '0'; | ||||
| 697 | |||||
| 698 | /* If FilenamePat[*I+J] is between '0' and '9', the next byte is guaranteed | ||||
| 699 | * to be in-bound as the string is null terminated. */ | ||||
| 700 | } | ||||
| 701 | return 0; | ||||
| 702 | } | ||||
| 703 | |||||
| 704 | /* Assert that Idx does index past a string null terminator. Return the | ||||
| 705 | * result of the check. */ | ||||
| 706 | static int checkBounds(int Idx, int Strlen) { | ||||
| 707 | assert(Idx <= Strlen && "Indexing past string null terminator")((Idx <= Strlen && "Indexing past string null terminator" ) ? (void) (0) : __assert_fail ("Idx <= Strlen && \"Indexing past string null terminator\"" , "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/compiler-rt/lib/profile/InstrProfilingFile.c" , 707, __PRETTY_FUNCTION__)); | ||||
| 708 | return Idx <= Strlen; | ||||
| 709 | } | ||||
| 710 | |||||
| 711 | /* Parses the pattern string \p FilenamePat and stores the result to | ||||
| 712 | * lprofcurFilename structure. */ | ||||
| 713 | static int parseFilenamePattern(const char *FilenamePat, | ||||
| 714 | unsigned CopyFilenamePat) { | ||||
| 715 | int NumPids = 0, NumHosts = 0, I; | ||||
| 716 | char *PidChars = &lprofCurFilename.PidChars[0]; | ||||
| 717 | char *Hostname = &lprofCurFilename.Hostname[0]; | ||||
| 718 | int MergingEnabled = 0; | ||||
| 719 | int FilenamePatLen = strlen(FilenamePat); | ||||
| 720 | |||||
| 721 | /* Clean up cached prefix and filename. */ | ||||
| 722 | if (lprofCurFilename.ProfilePathPrefix) | ||||
| 723 | free((void *)lprofCurFilename.ProfilePathPrefix); | ||||
| 724 | |||||
| 725 | if (lprofCurFilename.FilenamePat && lprofCurFilename.OwnsFilenamePat) { | ||||
| 726 | free((void *)lprofCurFilename.FilenamePat); | ||||
| 727 | } | ||||
| 728 | |||||
| 729 | memset(&lprofCurFilename, 0, sizeof(lprofCurFilename)); | ||||
| 730 | |||||
| 731 | if (!CopyFilenamePat) | ||||
| 732 | lprofCurFilename.FilenamePat = FilenamePat; | ||||
| 733 | else { | ||||
| 734 | lprofCurFilename.FilenamePat = strdup(FilenamePat)(__extension__ (__builtin_constant_p (FilenamePat) && ((size_t)(const void *)((FilenamePat) + 1) - (size_t)(const void *)(FilenamePat) == 1) ? (((const char *) (FilenamePat))[0] == '\0' ? (char *) calloc ((size_t) 1, (size_t) 1) : ({ size_t __len = strlen (FilenamePat) + 1; char *__retval = (char *) malloc (__len); if (__retval != ((void*)0)) __retval = (char *) memcpy (__retval, FilenamePat, __len); __retval; })) : __strdup (FilenamePat ))); | ||||
| 735 | lprofCurFilename.OwnsFilenamePat = 1; | ||||
| 736 | } | ||||
| 737 | /* Check the filename for "%p", which indicates a pid-substitution. */ | ||||
| 738 | for (I = 0; checkBounds(I, FilenamePatLen) && FilenamePat[I]; ++I) { | ||||
| 739 | if (FilenamePat[I] == '%') { | ||||
| 740 | ++I; /* Advance to the next character. */ | ||||
| 741 | if (!checkBounds(I, FilenamePatLen)) | ||||
| 742 | break; | ||||
| 743 | if (FilenamePat[I] == 'p') { | ||||
| 744 | if (!NumPids++) { | ||||
| 745 | if (snprintf(PidChars, MAX_PID_SIZE16, "%ld", (long)getpid()) <= 0) { | ||||
| 746 | PROF_WARN("Unable to get pid for filename pattern %s. Using the "fprintf(stderr, "LLVM Profile Warning: " "Unable to get pid for filename pattern %s. Using the " "default name.", FilenamePat); | ||||
| 747 | "default name.",fprintf(stderr, "LLVM Profile Warning: " "Unable to get pid for filename pattern %s. Using the " "default name.", FilenamePat); | ||||
| 748 | FilenamePat)fprintf(stderr, "LLVM Profile Warning: " "Unable to get pid for filename pattern %s. Using the " "default name.", FilenamePat);; | ||||
| 749 | return -1; | ||||
| 750 | } | ||||
| 751 | } | ||||
| 752 | } else if (FilenamePat[I] == 'h') { | ||||
| 753 | if (!NumHosts++) | ||||
| 754 | if (COMPILER_RT_GETHOSTNAME(Hostname, COMPILER_RT_MAX_HOSTLEN)lprofGetHostName(Hostname, 128)) { | ||||
| 755 | PROF_WARN("Unable to get hostname for filename pattern %s. Using "fprintf(stderr, "LLVM Profile Warning: " "Unable to get hostname for filename pattern %s. Using " "the default name.", FilenamePat); | ||||
| 756 | "the default name.",fprintf(stderr, "LLVM Profile Warning: " "Unable to get hostname for filename pattern %s. Using " "the default name.", FilenamePat); | ||||
| 757 | FilenamePat)fprintf(stderr, "LLVM Profile Warning: " "Unable to get hostname for filename pattern %s. Using " "the default name.", FilenamePat);; | ||||
| 758 | return -1; | ||||
| 759 | } | ||||
| 760 | } else if (FilenamePat[I] == 't') { | ||||
| 761 | lprofCurFilename.TmpDir = getenv("TMPDIR"); | ||||
| 762 | if (!lprofCurFilename.TmpDir) { | ||||
| 763 | PROF_WARN("Unable to get the TMPDIR environment variable, referenced "fprintf(stderr, "LLVM Profile Warning: " "Unable to get the TMPDIR environment variable, referenced " "in %s. Using the default path.", FilenamePat); | ||||
| 764 | "in %s. Using the default path.",fprintf(stderr, "LLVM Profile Warning: " "Unable to get the TMPDIR environment variable, referenced " "in %s. Using the default path.", FilenamePat); | ||||
| 765 | FilenamePat)fprintf(stderr, "LLVM Profile Warning: " "Unable to get the TMPDIR environment variable, referenced " "in %s. Using the default path.", FilenamePat);; | ||||
| 766 | return -1; | ||||
| 767 | } | ||||
| 768 | } else if (FilenamePat[I] == 'c') { | ||||
| 769 | if (__llvm_profile_is_continuous_mode_enabled()) { | ||||
| 770 | PROF_WARN("%%c specifier can only be specified once in %s.\n",fprintf(stderr, "LLVM Profile Warning: " "%%c specifier can only be specified once in %s.\n" , FilenamePat); | ||||
| 771 | FilenamePat)fprintf(stderr, "LLVM Profile Warning: " "%%c specifier can only be specified once in %s.\n" , FilenamePat);; | ||||
| 772 | return -1; | ||||
| 773 | } | ||||
| 774 | |||||
| 775 | __llvm_profile_set_page_size(getpagesize()); | ||||
| 776 | __llvm_profile_enable_continuous_mode(); | ||||
| 777 | } else { | ||||
| 778 | unsigned MergePoolSize = getMergePoolSize(FilenamePat, &I); | ||||
| 779 | if (!MergePoolSize) | ||||
| 780 | continue; | ||||
| 781 | if (MergingEnabled) { | ||||
| 782 | PROF_WARN("%%m specifier can only be specified once in %s.\n",fprintf(stderr, "LLVM Profile Warning: " "%%m specifier can only be specified once in %s.\n" , FilenamePat); | ||||
| 783 | FilenamePat)fprintf(stderr, "LLVM Profile Warning: " "%%m specifier can only be specified once in %s.\n" , FilenamePat);; | ||||
| 784 | return -1; | ||||
| 785 | } | ||||
| 786 | MergingEnabled = 1; | ||||
| 787 | lprofCurFilename.MergePoolSize = MergePoolSize; | ||||
| 788 | } | ||||
| 789 | } | ||||
| 790 | } | ||||
| 791 | |||||
| 792 | lprofCurFilename.NumPids = NumPids; | ||||
| 793 | lprofCurFilename.NumHosts = NumHosts; | ||||
| 794 | return 0; | ||||
| 795 | } | ||||
| 796 | |||||
| 797 | static void parseAndSetFilename(const char *FilenamePat, | ||||
| 798 | ProfileNameSpecifier PNS, | ||||
| 799 | unsigned CopyFilenamePat) { | ||||
| 800 | |||||
| 801 | const char *OldFilenamePat = lprofCurFilename.FilenamePat; | ||||
| 802 | ProfileNameSpecifier OldPNS = lprofCurFilename.PNS; | ||||
| 803 | |||||
| 804 | /* The old profile name specifier takes precedence over the old one. */ | ||||
| 805 | if (PNS < OldPNS) | ||||
| 806 | return; | ||||
| 807 | |||||
| 808 | if (!FilenamePat) | ||||
| 809 | FilenamePat = DefaultProfileName; | ||||
| 810 | |||||
| 811 | if (OldFilenamePat && !strcmp(OldFilenamePat, FilenamePat)__extension__ ({ size_t __s1_len, __s2_len; (__builtin_constant_p (OldFilenamePat) && __builtin_constant_p (FilenamePat ) && (__s1_len = __builtin_strlen (OldFilenamePat), __s2_len = __builtin_strlen (FilenamePat), (!((size_t)(const void *)( (OldFilenamePat) + 1) - (size_t)(const void *)(OldFilenamePat ) == 1) || __s1_len >= 4) && (!((size_t)(const void *)((FilenamePat) + 1) - (size_t)(const void *)(FilenamePat) == 1) || __s2_len >= 4)) ? __builtin_strcmp (OldFilenamePat, FilenamePat) : (__builtin_constant_p (OldFilenamePat) && ((size_t)(const void *)((OldFilenamePat) + 1) - (size_t)(const void *)(OldFilenamePat) == 1) && (__s1_len = __builtin_strlen (OldFilenamePat), __s1_len < 4) ? (__builtin_constant_p ( FilenamePat) && ((size_t)(const void *)((FilenamePat) + 1) - (size_t)(const void *)(FilenamePat) == 1) ? __builtin_strcmp (OldFilenamePat, FilenamePat) : (__extension__ ({ const unsigned char *__s2 = (const unsigned char *) (const char *) (FilenamePat ); int __result = (((const unsigned char *) (const char *) (OldFilenamePat ))[0] - __s2[0]); if (__s1_len > 0 && __result == 0 ) { __result = (((const unsigned char *) (const char *) (OldFilenamePat ))[1] - __s2[1]); if (__s1_len > 1 && __result == 0 ) { __result = (((const unsigned char *) (const char *) (OldFilenamePat ))[2] - __s2[2]); if (__s1_len > 2 && __result == 0 ) __result = (((const unsigned char *) (const char *) (OldFilenamePat ))[3] - __s2[3]); } } __result; }))) : (__builtin_constant_p ( FilenamePat) && ((size_t)(const void *)((FilenamePat) + 1) - (size_t)(const void *)(FilenamePat) == 1) && ( __s2_len = __builtin_strlen (FilenamePat), __s2_len < 4) ? (__builtin_constant_p (OldFilenamePat) && ((size_t)( const void *)((OldFilenamePat) + 1) - (size_t)(const void *)( OldFilenamePat) == 1) ? __builtin_strcmp (OldFilenamePat, FilenamePat ) : -(__extension__ ({ const unsigned char *__s2 = (const unsigned char *) (const char *) (OldFilenamePat); int __result = (((const unsigned char *) (const char *) (FilenamePat))[0] - __s2[0]) ; if (__s2_len > 0 && __result == 0) { __result = ( ((const unsigned char *) (const char *) (FilenamePat))[1] - __s2 [1]); if (__s2_len > 1 && __result == 0) { __result = (((const unsigned char *) (const char *) (FilenamePat))[2] - __s2[2]); if (__s2_len > 2 && __result == 0) __result = (((const unsigned char *) (const char *) (FilenamePat))[3] - __s2[3]); } } __result; }))) : __builtin_strcmp (OldFilenamePat , FilenamePat)))); })) { | ||||
| 812 | lprofCurFilename.PNS = PNS; | ||||
| 813 | return; | ||||
| 814 | } | ||||
| 815 | |||||
| 816 | /* When PNS >= OldPNS, the last one wins. */ | ||||
| 817 | if (!FilenamePat || parseFilenamePattern(FilenamePat, CopyFilenamePat)) | ||||
| 818 | resetFilenameToDefault(); | ||||
| 819 | lprofCurFilename.PNS = PNS; | ||||
| 820 | |||||
| 821 | if (!OldFilenamePat) { | ||||
| 822 | if (getenv("LLVM_PROFILE_VERBOSE")) | ||||
| 823 | PROF_NOTE("Set profile file path to \"%s\" via %s.\n",fprintf(stderr, "LLVM Profile Note: " "Set profile file path to \"%s\" via %s.\n" , lprofCurFilename.FilenamePat, getPNSStr(PNS)); | ||||
| 824 | lprofCurFilename.FilenamePat, getPNSStr(PNS))fprintf(stderr, "LLVM Profile Note: " "Set profile file path to \"%s\" via %s.\n" , lprofCurFilename.FilenamePat, getPNSStr(PNS));; | ||||
| 825 | } else { | ||||
| 826 | if (getenv("LLVM_PROFILE_VERBOSE")) | ||||
| 827 | PROF_NOTE("Override old profile path \"%s\" via %s to \"%s\" via %s.\n",fprintf(stderr, "LLVM Profile Note: " "Override old profile path \"%s\" via %s to \"%s\" via %s.\n" , OldFilenamePat, getPNSStr(OldPNS), lprofCurFilename.FilenamePat , getPNSStr(PNS)); | ||||
| 828 | OldFilenamePat, getPNSStr(OldPNS), lprofCurFilename.FilenamePat,fprintf(stderr, "LLVM Profile Note: " "Override old profile path \"%s\" via %s to \"%s\" via %s.\n" , OldFilenamePat, getPNSStr(OldPNS), lprofCurFilename.FilenamePat , getPNSStr(PNS)); | ||||
| 829 | getPNSStr(PNS))fprintf(stderr, "LLVM Profile Note: " "Override old profile path \"%s\" via %s to \"%s\" via %s.\n" , OldFilenamePat, getPNSStr(OldPNS), lprofCurFilename.FilenamePat , getPNSStr(PNS));; | ||||
| 830 | } | ||||
| 831 | |||||
| 832 | truncateCurrentFile(); | ||||
| 833 | if (__llvm_profile_is_continuous_mode_enabled()) { | ||||
| 834 | if (lprofRuntimeCounterRelocation()) | ||||
| 835 | relocateCounters(); | ||||
| 836 | else | ||||
| 837 | initializeProfileForContinuousMode(); | ||||
| 838 | } | ||||
| 839 | } | ||||
| 840 | |||||
| 841 | /* Return buffer length that is required to store the current profile | ||||
| 842 | * filename with PID and hostname substitutions. */ | ||||
| 843 | /* The length to hold uint64_t followed by 3 digits pool id including '_' */ | ||||
| 844 | #define SIGLEN24 24 | ||||
| 845 | static int getCurFilenameLength() { | ||||
| 846 | int Len; | ||||
| 847 | if (!lprofCurFilename.FilenamePat || !lprofCurFilename.FilenamePat[0]) | ||||
| 848 | return 0; | ||||
| 849 | |||||
| 850 | if (!(lprofCurFilename.NumPids || lprofCurFilename.NumHosts || | ||||
| 851 | lprofCurFilename.TmpDir || lprofCurFilename.MergePoolSize)) | ||||
| 852 | return strlen(lprofCurFilename.FilenamePat); | ||||
| 853 | |||||
| 854 | Len = strlen(lprofCurFilename.FilenamePat) + | ||||
| 855 | lprofCurFilename.NumPids * (strlen(lprofCurFilename.PidChars) - 2) + | ||||
| 856 | lprofCurFilename.NumHosts * (strlen(lprofCurFilename.Hostname) - 2) + | ||||
| 857 | (lprofCurFilename.TmpDir ? (strlen(lprofCurFilename.TmpDir) - 1) : 0); | ||||
| 858 | if (lprofCurFilename.MergePoolSize) | ||||
| 859 | Len += SIGLEN24; | ||||
| 860 | return Len; | ||||
| 861 | } | ||||
| 862 | |||||
| 863 | /* Return the pointer to the current profile file name (after substituting | ||||
| 864 | * PIDs and Hostnames in filename pattern. \p FilenameBuf is the buffer | ||||
| 865 | * to store the resulting filename. If no substitution is needed, the | ||||
| 866 | * current filename pattern string is directly returned, unless ForceUseBuf | ||||
| 867 | * is enabled. */ | ||||
| 868 | static const char *getCurFilename(char *FilenameBuf, int ForceUseBuf) { | ||||
| 869 | int I, J, PidLength, HostNameLength, TmpDirLength, FilenamePatLength; | ||||
| 870 | const char *FilenamePat = lprofCurFilename.FilenamePat; | ||||
| 871 | |||||
| 872 | if (!lprofCurFilename.FilenamePat
| ||||
| 873 | return 0; | ||||
| 874 | |||||
| 875 | if (!(lprofCurFilename.NumPids
| ||||
| 876 | lprofCurFilename.TmpDir
| ||||
| 877 | __llvm_profile_is_continuous_mode_enabled())) { | ||||
| 878 | if (!ForceUseBuf) | ||||
| 879 | return lprofCurFilename.FilenamePat; | ||||
| 880 | |||||
| 881 | FilenamePatLength = strlen(lprofCurFilename.FilenamePat); | ||||
| 882 | memcpy(FilenameBuf, lprofCurFilename.FilenamePat, FilenamePatLength); | ||||
| 883 | FilenameBuf[FilenamePatLength] = '\0'; | ||||
| 884 | return FilenameBuf; | ||||
| 885 | } | ||||
| 886 | |||||
| 887 | PidLength = strlen(lprofCurFilename.PidChars); | ||||
| 888 | HostNameLength = strlen(lprofCurFilename.Hostname); | ||||
| 889 | TmpDirLength = lprofCurFilename.TmpDir ? strlen(lprofCurFilename.TmpDir) : 0; | ||||
| 890 | /* Construct the new filename. */ | ||||
| 891 | for (I = 0, J = 0; FilenamePat[I]; ++I) | ||||
| 892 | if (FilenamePat[I] == '%') { | ||||
| 893 | if (FilenamePat[++I] == 'p') { | ||||
| 894 | memcpy(FilenameBuf + J, lprofCurFilename.PidChars, PidLength); | ||||
| 895 | J += PidLength; | ||||
| 896 | } else if (FilenamePat[I] == 'h') { | ||||
| 897 | memcpy(FilenameBuf + J, lprofCurFilename.Hostname, HostNameLength); | ||||
| 898 | J += HostNameLength; | ||||
| 899 | } else if (FilenamePat[I] == 't') { | ||||
| 900 | memcpy(FilenameBuf + J, lprofCurFilename.TmpDir, TmpDirLength); | ||||
| |||||
| 901 | FilenameBuf[J + TmpDirLength] = DIR_SEPARATOR'/'; | ||||
| 902 | J += TmpDirLength + 1; | ||||
| 903 | } else { | ||||
| 904 | if (!getMergePoolSize(FilenamePat, &I)) | ||||
| 905 | continue; | ||||
| 906 | char LoadModuleSignature[SIGLEN24 + 1]; | ||||
| 907 | int S; | ||||
| 908 | int ProfilePoolId = getpid() % lprofCurFilename.MergePoolSize; | ||||
| 909 | S = snprintf(LoadModuleSignature, SIGLEN24 + 1, "%" PRIu64"ll" "u" "_%d", | ||||
| 910 | lprofGetLoadModuleSignature(), ProfilePoolId); | ||||
| 911 | if (S == -1 || S > SIGLEN24) | ||||
| 912 | S = SIGLEN24; | ||||
| 913 | memcpy(FilenameBuf + J, LoadModuleSignature, S); | ||||
| 914 | J += S; | ||||
| 915 | } | ||||
| 916 | /* Drop any unknown substitutions. */ | ||||
| 917 | } else | ||||
| 918 | FilenameBuf[J++] = FilenamePat[I]; | ||||
| 919 | FilenameBuf[J] = 0; | ||||
| 920 | |||||
| 921 | return FilenameBuf; | ||||
| 922 | } | ||||
| 923 | |||||
| 924 | /* Returns the pointer to the environment variable | ||||
| 925 | * string. Returns null if the env var is not set. */ | ||||
| 926 | static const char *getFilenamePatFromEnv(void) { | ||||
| 927 | const char *Filename = getenv("LLVM_PROFILE_FILE"); | ||||
| 928 | if (!Filename || !Filename[0]) | ||||
| 929 | return 0; | ||||
| 930 | return Filename; | ||||
| 931 | } | ||||
| 932 | |||||
| 933 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | ||||
| 934 | const char *__llvm_profile_get_path_prefix(void) { | ||||
| 935 | int Length; | ||||
| 936 | char *FilenameBuf, *Prefix; | ||||
| 937 | const char *Filename, *PrefixEnd; | ||||
| 938 | |||||
| 939 | if (lprofCurFilename.ProfilePathPrefix) | ||||
| 940 | return lprofCurFilename.ProfilePathPrefix; | ||||
| 941 | |||||
| 942 | Length = getCurFilenameLength(); | ||||
| 943 | FilenameBuf = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | ||||
| 944 | Filename = getCurFilename(FilenameBuf, 0); | ||||
| 945 | if (!Filename) | ||||
| 946 | return "\0"; | ||||
| 947 | |||||
| 948 | PrefixEnd = lprofFindLastDirSeparator(Filename); | ||||
| 949 | if (!PrefixEnd) | ||||
| 950 | return "\0"; | ||||
| 951 | |||||
| 952 | Length = PrefixEnd - Filename + 1; | ||||
| 953 | Prefix = (char *)malloc(Length + 1); | ||||
| 954 | if (!Prefix) { | ||||
| 955 | PROF_ERR("Failed to %s\n", "allocate memory.")fprintf(stderr, "LLVM Profile Error: " "Failed to %s\n", "allocate memory." );; | ||||
| 956 | return "\0"; | ||||
| 957 | } | ||||
| 958 | memcpy(Prefix, Filename, Length); | ||||
| 959 | Prefix[Length] = '\0'; | ||||
| 960 | lprofCurFilename.ProfilePathPrefix = Prefix; | ||||
| 961 | return Prefix; | ||||
| 962 | } | ||||
| 963 | |||||
| 964 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | ||||
| 965 | const char *__llvm_profile_get_filename(void) { | ||||
| 966 | int Length; | ||||
| 967 | char *FilenameBuf; | ||||
| 968 | const char *Filename; | ||||
| 969 | |||||
| 970 | Length = getCurFilenameLength(); | ||||
| 971 | FilenameBuf = (char *)malloc(Length + 1); | ||||
| 972 | if (!FilenameBuf) { | ||||
| 973 | PROF_ERR("Failed to %s\n", "allocate memory.")fprintf(stderr, "LLVM Profile Error: " "Failed to %s\n", "allocate memory." );; | ||||
| 974 | return "\0"; | ||||
| 975 | } | ||||
| 976 | Filename = getCurFilename(FilenameBuf, 1); | ||||
| 977 | if (!Filename) | ||||
| 978 | return "\0"; | ||||
| 979 | |||||
| 980 | return FilenameBuf; | ||||
| 981 | } | ||||
| 982 | |||||
| 983 | /* This API initializes the file handling, both user specified | ||||
| 984 | * profile path via -fprofile-instr-generate= and LLVM_PROFILE_FILE | ||||
| 985 | * environment variable can override this default value. | ||||
| 986 | */ | ||||
| 987 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | ||||
| 988 | void __llvm_profile_initialize_file(void) { | ||||
| 989 | const char *EnvFilenamePat; | ||||
| 990 | const char *SelectedPat = NULL((void*)0); | ||||
| 991 | ProfileNameSpecifier PNS = PNS_unknown; | ||||
| 992 | int hasCommandLineOverrider = (INSTR_PROF_PROFILE_NAME_VAR__llvm_profile_filename[0] != 0); | ||||
| 993 | |||||
| 994 | if (__llvm_profile_counter_bias != -1) | ||||
| 995 | lprofSetRuntimeCounterRelocation(1); | ||||
| 996 | |||||
| 997 | EnvFilenamePat = getFilenamePatFromEnv(); | ||||
| 998 | if (EnvFilenamePat) { | ||||
| 999 | /* Pass CopyFilenamePat = 1, to ensure that the filename would be valid | ||||
| 1000 | at the moment when __llvm_profile_write_file() gets executed. */ | ||||
| 1001 | parseAndSetFilename(EnvFilenamePat, PNS_environment, 1); | ||||
| 1002 | return; | ||||
| 1003 | } else if (hasCommandLineOverrider) { | ||||
| 1004 | SelectedPat = INSTR_PROF_PROFILE_NAME_VAR__llvm_profile_filename; | ||||
| 1005 | PNS = PNS_command_line; | ||||
| 1006 | } else { | ||||
| 1007 | SelectedPat = NULL((void*)0); | ||||
| 1008 | PNS = PNS_default; | ||||
| 1009 | } | ||||
| 1010 | |||||
| 1011 | parseAndSetFilename(SelectedPat, PNS, 0); | ||||
| 1012 | } | ||||
| 1013 | |||||
| 1014 | /* This method is invoked by the runtime initialization hook | ||||
| 1015 | * InstrProfilingRuntime.o if it is linked in. | ||||
| 1016 | */ | ||||
| 1017 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | ||||
| 1018 | void __llvm_profile_initialize(void) { | ||||
| 1019 | __llvm_profile_initialize_file(); | ||||
| 1020 | if (!__llvm_profile_is_continuous_mode_enabled()) | ||||
| 1021 | __llvm_profile_register_write_file_atexit(); | ||||
| 1022 | } | ||||
| 1023 | |||||
| 1024 | /* This API is directly called by the user application code. It has the | ||||
| 1025 | * highest precedence compared with LLVM_PROFILE_FILE environment variable | ||||
| 1026 | * and command line option -fprofile-instr-generate=<profile_name>. | ||||
| 1027 | */ | ||||
| 1028 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | ||||
| 1029 | void __llvm_profile_set_filename(const char *FilenamePat) { | ||||
| 1030 | if (__llvm_profile_is_continuous_mode_enabled()) | ||||
| 1031 | return; | ||||
| 1032 | parseAndSetFilename(FilenamePat, PNS_runtime_api, 1); | ||||
| 1033 | } | ||||
| 1034 | |||||
| 1035 | /* The public API for writing profile data into the file with name | ||||
| 1036 | * set by previous calls to __llvm_profile_set_filename or | ||||
| 1037 | * __llvm_profile_override_default_filename or | ||||
| 1038 | * __llvm_profile_initialize_file. */ | ||||
| 1039 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | ||||
| 1040 | int __llvm_profile_write_file(void) { | ||||
| 1041 | int rc, Length; | ||||
| 1042 | const char *Filename; | ||||
| 1043 | char *FilenameBuf; | ||||
| 1044 | int PDeathSig = 0; | ||||
| 1045 | |||||
| 1046 | if (lprofProfileDumped() || __llvm_profile_is_continuous_mode_enabled()) { | ||||
| 1047 | PROF_NOTE("Profile data not written to file: %s.\n", "already written")fprintf(stderr, "LLVM Profile Note: " "Profile data not written to file: %s.\n" , "already written");; | ||||
| 1048 | return 0; | ||||
| 1049 | } | ||||
| 1050 | |||||
| 1051 | Length = getCurFilenameLength(); | ||||
| 1052 | FilenameBuf = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | ||||
| 1053 | Filename = getCurFilename(FilenameBuf, 0); | ||||
| 1054 | |||||
| 1055 | /* Check the filename. */ | ||||
| 1056 | if (!Filename) { | ||||
| 1057 | PROF_ERR("Failed to write file : %s\n", "Filename not set")fprintf(stderr, "LLVM Profile Error: " "Failed to write file : %s\n" , "Filename not set");; | ||||
| 1058 | return -1; | ||||
| 1059 | } | ||||
| 1060 | |||||
| 1061 | /* Check if there is llvm/runtime version mismatch. */ | ||||
| 1062 | if (GET_VERSION(__llvm_profile_get_version())((__llvm_profile_get_version()) & ~0xff00000000000000ULL) != INSTR_PROF_RAW_VERSION5) { | ||||
| 1063 | PROF_ERR("Runtime and instrumentation version mismatch : "fprintf(stderr, "LLVM Profile Error: " "Runtime and instrumentation version mismatch : " "expected %d, but get %d\n", 5, (int)((__llvm_profile_get_version ()) & ~0xff00000000000000ULL)); | ||||
| 1064 | "expected %d, but get %d\n",fprintf(stderr, "LLVM Profile Error: " "Runtime and instrumentation version mismatch : " "expected %d, but get %d\n", 5, (int)((__llvm_profile_get_version ()) & ~0xff00000000000000ULL)); | ||||
| 1065 | INSTR_PROF_RAW_VERSION,fprintf(stderr, "LLVM Profile Error: " "Runtime and instrumentation version mismatch : " "expected %d, but get %d\n", 5, (int)((__llvm_profile_get_version ()) & ~0xff00000000000000ULL)); | ||||
| 1066 | (int)GET_VERSION(__llvm_profile_get_version()))fprintf(stderr, "LLVM Profile Error: " "Runtime and instrumentation version mismatch : " "expected %d, but get %d\n", 5, (int)((__llvm_profile_get_version ()) & ~0xff00000000000000ULL));; | ||||
| 1067 | return -1; | ||||
| 1068 | } | ||||
| 1069 | |||||
| 1070 | // Temporarily suspend getting SIGKILL when the parent exits. | ||||
| 1071 | PDeathSig = lprofSuspendSigKill(); | ||||
| 1072 | |||||
| 1073 | /* Write profile data to the file. */ | ||||
| 1074 | rc = writeFile(Filename); | ||||
| 1075 | if (rc) | ||||
| 1076 | PROF_ERR("Failed to write file \"%s\": %s\n", Filename, strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Failed to write file \"%s\": %s\n" , Filename, strerror((*__errno_location ())));; | ||||
| 1077 | |||||
| 1078 | // Restore SIGKILL. | ||||
| 1079 | if (PDeathSig == 1) | ||||
| 1080 | lprofRestoreSigKill(); | ||||
| 1081 | |||||
| 1082 | return rc; | ||||
| 1083 | } | ||||
| 1084 | |||||
| 1085 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | ||||
| 1086 | int __llvm_profile_dump(void) { | ||||
| 1087 | if (!doMerging()) | ||||
| 1088 | PROF_WARN("Later invocation of __llvm_profile_dump can lead to clobbering "fprintf(stderr, "LLVM Profile Warning: " "Later invocation of __llvm_profile_dump can lead to clobbering " " of previously dumped profile data : %s. Either use %%m " "in profile name or change profile name before dumping.\n" , "online profile merging is not on"); | ||||
| 1089 | " of previously dumped profile data : %s. Either use %%m "fprintf(stderr, "LLVM Profile Warning: " "Later invocation of __llvm_profile_dump can lead to clobbering " " of previously dumped profile data : %s. Either use %%m " "in profile name or change profile name before dumping.\n" , "online profile merging is not on"); | ||||
| 1090 | "in profile name or change profile name before dumping.\n",fprintf(stderr, "LLVM Profile Warning: " "Later invocation of __llvm_profile_dump can lead to clobbering " " of previously dumped profile data : %s. Either use %%m " "in profile name or change profile name before dumping.\n" , "online profile merging is not on"); | ||||
| 1091 | "online profile merging is not on")fprintf(stderr, "LLVM Profile Warning: " "Later invocation of __llvm_profile_dump can lead to clobbering " " of previously dumped profile data : %s. Either use %%m " "in profile name or change profile name before dumping.\n" , "online profile merging is not on");; | ||||
| 1092 | int rc = __llvm_profile_write_file(); | ||||
| 1093 | lprofSetProfileDumped(1); | ||||
| 1094 | return rc; | ||||
| 1095 | } | ||||
| 1096 | |||||
| 1097 | /* Order file data will be saved in a file with suffx .order. */ | ||||
| 1098 | static const char *OrderFileSuffix = ".order"; | ||||
| 1099 | |||||
| 1100 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | ||||
| 1101 | int __llvm_orderfile_write_file(void) { | ||||
| 1102 | int rc, Length, LengthBeforeAppend, SuffixLength; | ||||
| 1103 | const char *Filename; | ||||
| 1104 | char *FilenameBuf; | ||||
| 1105 | int PDeathSig = 0; | ||||
| 1106 | |||||
| 1107 | SuffixLength = strlen(OrderFileSuffix); | ||||
| 1108 | Length = getCurFilenameLength() + SuffixLength; | ||||
| 1109 | FilenameBuf = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | ||||
| 1110 | Filename = getCurFilename(FilenameBuf, 1); | ||||
| 1111 | |||||
| 1112 | /* Check the filename. */ | ||||
| 1113 | if (!Filename) { | ||||
| 1114 | PROF_ERR("Failed to write file : %s\n", "Filename not set")fprintf(stderr, "LLVM Profile Error: " "Failed to write file : %s\n" , "Filename not set");; | ||||
| 1115 | return -1; | ||||
| 1116 | } | ||||
| 1117 | |||||
| 1118 | /* Append order file suffix */ | ||||
| 1119 | LengthBeforeAppend = strlen(Filename); | ||||
| 1120 | memcpy(FilenameBuf + LengthBeforeAppend, OrderFileSuffix, SuffixLength); | ||||
| 1121 | FilenameBuf[LengthBeforeAppend + SuffixLength] = '\0'; | ||||
| 1122 | |||||
| 1123 | /* Check if there is llvm/runtime version mismatch. */ | ||||
| 1124 | if (GET_VERSION(__llvm_profile_get_version())((__llvm_profile_get_version()) & ~0xff00000000000000ULL) != INSTR_PROF_RAW_VERSION5) { | ||||
| 1125 | PROF_ERR("Runtime and instrumentation version mismatch : "fprintf(stderr, "LLVM Profile Error: " "Runtime and instrumentation version mismatch : " "expected %d, but get %d\n", 5, (int)((__llvm_profile_get_version ()) & ~0xff00000000000000ULL)); | ||||
| 1126 | "expected %d, but get %d\n",fprintf(stderr, "LLVM Profile Error: " "Runtime and instrumentation version mismatch : " "expected %d, but get %d\n", 5, (int)((__llvm_profile_get_version ()) & ~0xff00000000000000ULL)); | ||||
| 1127 | INSTR_PROF_RAW_VERSION,fprintf(stderr, "LLVM Profile Error: " "Runtime and instrumentation version mismatch : " "expected %d, but get %d\n", 5, (int)((__llvm_profile_get_version ()) & ~0xff00000000000000ULL)); | ||||
| 1128 | (int)GET_VERSION(__llvm_profile_get_version()))fprintf(stderr, "LLVM Profile Error: " "Runtime and instrumentation version mismatch : " "expected %d, but get %d\n", 5, (int)((__llvm_profile_get_version ()) & ~0xff00000000000000ULL));; | ||||
| 1129 | return -1; | ||||
| 1130 | } | ||||
| 1131 | |||||
| 1132 | // Temporarily suspend getting SIGKILL when the parent exits. | ||||
| 1133 | PDeathSig = lprofSuspendSigKill(); | ||||
| 1134 | |||||
| 1135 | /* Write order data to the file. */ | ||||
| 1136 | rc = writeOrderFile(Filename); | ||||
| 1137 | if (rc) | ||||
| 1138 | PROF_ERR("Failed to write file \"%s\": %s\n", Filename, strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Failed to write file \"%s\": %s\n" , Filename, strerror((*__errno_location ())));; | ||||
| 1139 | |||||
| 1140 | // Restore SIGKILL. | ||||
| 1141 | if (PDeathSig == 1) | ||||
| 1142 | lprofRestoreSigKill(); | ||||
| 1143 | |||||
| 1144 | return rc; | ||||
| 1145 | } | ||||
| 1146 | |||||
| 1147 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | ||||
| 1148 | int __llvm_orderfile_dump(void) { | ||||
| 1149 | int rc = __llvm_orderfile_write_file(); | ||||
| |||||
| 1150 | return rc; | ||||
| 1151 | } | ||||
| 1152 | |||||
| 1153 | static void writeFileWithoutReturn(void) { __llvm_profile_write_file(); } | ||||
| 1154 | |||||
| 1155 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | ||||
| 1156 | int __llvm_profile_register_write_file_atexit(void) { | ||||
| 1157 | static int HasBeenRegistered = 0; | ||||
| 1158 | |||||
| 1159 | if (HasBeenRegistered) | ||||
| 1160 | return 0; | ||||
| 1161 | |||||
| 1162 | lprofSetupValueProfiler(); | ||||
| 1163 | |||||
| 1164 | HasBeenRegistered = 1; | ||||
| 1165 | return atexit(writeFileWithoutReturn); | ||||
| 1166 | } | ||||
| 1167 | |||||
| 1168 | #endif |