| File: | compiler-rt/lib/profile/InstrProfilingFile.c |
| Warning: | line 608, column 7 Use of memory after it is freed |
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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 <errno(*__errno_location ()).h> | |||
| 12 | #include <stdio.h> | |||
| 13 | #include <stdlib.h> | |||
| 14 | #include <string.h> | |||
| 15 | #ifdef _MSC_VER | |||
| 16 | /* For _alloca. */ | |||
| 17 | #include <malloc.h> | |||
| 18 | #endif | |||
| 19 | #if defined(_WIN32) | |||
| 20 | #include "WindowsMMap.h" | |||
| 21 | /* For _chsize_s */ | |||
| 22 | #include <io.h> | |||
| 23 | #include <process.h> | |||
| 24 | #else | |||
| 25 | #include <sys/file.h> | |||
| 26 | #include <sys/mman.h> | |||
| 27 | #include <unistd.h> | |||
| 28 | #if defined(__linux__1) | |||
| 29 | #include <sys/types.h> | |||
| 30 | #endif | |||
| 31 | #endif | |||
| 32 | ||||
| 33 | #include "InstrProfiling.h" | |||
| 34 | #include "InstrProfilingInternal.h" | |||
| 35 | #include "InstrProfilingPort.h" | |||
| 36 | #include "InstrProfilingUtil.h" | |||
| 37 | ||||
| 38 | /* From where is profile name specified. | |||
| 39 | * The order the enumerators define their | |||
| 40 | * precedence. Re-order them may lead to | |||
| 41 | * runtime behavior change. */ | |||
| 42 | typedef enum ProfileNameSpecifier { | |||
| 43 | PNS_unknown = 0, | |||
| 44 | PNS_default, | |||
| 45 | PNS_command_line, | |||
| 46 | PNS_environment, | |||
| 47 | PNS_runtime_api | |||
| 48 | } ProfileNameSpecifier; | |||
| 49 | ||||
| 50 | static const char *getPNSStr(ProfileNameSpecifier PNS) { | |||
| 51 | switch (PNS) { | |||
| 52 | case PNS_default: | |||
| 53 | return "default setting"; | |||
| 54 | case PNS_command_line: | |||
| 55 | return "command line"; | |||
| 56 | case PNS_environment: | |||
| 57 | return "environment variable"; | |||
| 58 | case PNS_runtime_api: | |||
| 59 | return "runtime API"; | |||
| 60 | default: | |||
| 61 | return "Unknown"; | |||
| 62 | } | |||
| 63 | } | |||
| 64 | ||||
| 65 | #define MAX_PID_SIZE16 16 | |||
| 66 | /* Data structure holding the result of parsed filename pattern. */ | |||
| 67 | typedef struct lprofFilename { | |||
| 68 | /* File name string possibly with %p or %h specifiers. */ | |||
| 69 | const char *FilenamePat; | |||
| 70 | /* A flag indicating if FilenamePat's memory is allocated | |||
| 71 | * by runtime. */ | |||
| 72 | unsigned OwnsFilenamePat; | |||
| 73 | const char *ProfilePathPrefix; | |||
| 74 | char PidChars[MAX_PID_SIZE16]; | |||
| 75 | char Hostname[COMPILER_RT_MAX_HOSTLEN128]; | |||
| 76 | unsigned NumPids; | |||
| 77 | unsigned NumHosts; | |||
| 78 | /* When in-process merging is enabled, this parameter specifies | |||
| 79 | * the total number of profile data files shared by all the processes | |||
| 80 | * spawned from the same binary. By default the value is 1. If merging | |||
| 81 | * is not enabled, its value should be 0. This parameter is specified | |||
| 82 | * by the %[0-9]m specifier. For instance %2m enables merging using | |||
| 83 | * 2 profile data files. %1m is equivalent to %m. Also %m specifier | |||
| 84 | * can only appear once at the end of the name pattern. */ | |||
| 85 | unsigned MergePoolSize; | |||
| 86 | ProfileNameSpecifier PNS; | |||
| 87 | } lprofFilename; | |||
| 88 | ||||
| 89 | static lprofFilename lprofCurFilename = {0, 0, 0, {0}, {0}, | |||
| 90 | 0, 0, 0, PNS_unknown}; | |||
| 91 | ||||
| 92 | static int ProfileMergeRequested = 0; | |||
| 93 | static int isProfileMergeRequested() { return ProfileMergeRequested; } | |||
| 94 | static void setProfileMergeRequested(int EnableMerge) { | |||
| 95 | ProfileMergeRequested = EnableMerge; | |||
| 96 | } | |||
| 97 | ||||
| 98 | static FILE *ProfileFile = NULL((void*)0); | |||
| 99 | static FILE *getProfileFile() { return ProfileFile; } | |||
| 100 | static void setProfileFile(FILE *File) { ProfileFile = File; } | |||
| 101 | ||||
| 102 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) void __llvm_profile_set_file_object(FILE *File, | |||
| 103 | int EnableMerge) { | |||
| 104 | if (__llvm_profile_is_continuous_mode_enabled()) { | |||
| 105 | 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)); | |||
| 106 | "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)); | |||
| 107 | 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));; | |||
| 108 | return; | |||
| 109 | } | |||
| 110 | setProfileFile(File); | |||
| 111 | setProfileMergeRequested(EnableMerge); | |||
| 112 | } | |||
| 113 | ||||
| 114 | static int getCurFilenameLength(); | |||
| 115 | static const char *getCurFilename(char *FilenameBuf, int ForceUseBuf); | |||
| 116 | static unsigned doMerging() { | |||
| 117 | return lprofCurFilename.MergePoolSize || isProfileMergeRequested(); | |||
| 118 | } | |||
| 119 | ||||
| 120 | /* Return 1 if there is an error, otherwise return 0. */ | |||
| 121 | static uint32_t fileWriter(ProfDataWriter *This, ProfDataIOVec *IOVecs, | |||
| 122 | uint32_t NumIOVecs) { | |||
| 123 | uint32_t I; | |||
| 124 | FILE *File = (FILE *)This->WriterCtx; | |||
| 125 | for (I = 0; I < NumIOVecs; I++) { | |||
| 126 | if (IOVecs[I].Data) { | |||
| 127 | if (fwrite(IOVecs[I].Data, IOVecs[I].ElmSize, IOVecs[I].NumElm, File) != | |||
| 128 | IOVecs[I].NumElm) | |||
| 129 | return 1; | |||
| 130 | } else { | |||
| 131 | if (fseek(File, IOVecs[I].ElmSize * IOVecs[I].NumElm, SEEK_CUR1) == -1) | |||
| 132 | return 1; | |||
| 133 | } | |||
| 134 | } | |||
| 135 | return 0; | |||
| 136 | } | |||
| 137 | ||||
| 138 | /* TODO: make buffer size controllable by an internal option, and compiler can pass the size | |||
| 139 | to runtime via a variable. */ | |||
| 140 | static uint32_t orderFileWriter(FILE *File, const uint32_t *DataStart) { | |||
| 141 | if (fwrite(DataStart, sizeof(uint32_t), INSTR_ORDER_FILE_BUFFER_SIZE131072, File) != | |||
| 142 | INSTR_ORDER_FILE_BUFFER_SIZE131072) | |||
| 143 | return 1; | |||
| 144 | return 0; | |||
| 145 | } | |||
| 146 | ||||
| 147 | static void initFileWriter(ProfDataWriter *This, FILE *File) { | |||
| 148 | This->Write = fileWriter; | |||
| 149 | This->WriterCtx = File; | |||
| 150 | } | |||
| 151 | ||||
| 152 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) ProfBufferIO * | |||
| 153 | lprofCreateBufferIOInternal(void *File, uint32_t BufferSz) { | |||
| 154 | FreeHook = &free; | |||
| 155 | DynamicBufferIOBuffer = (uint8_t *)calloc(BufferSz, 1); | |||
| 156 | VPBufferSize = BufferSz; | |||
| 157 | ProfDataWriter *fileWriter = | |||
| 158 | (ProfDataWriter *)calloc(sizeof(ProfDataWriter), 1); | |||
| 159 | initFileWriter(fileWriter, File); | |||
| 160 | ProfBufferIO *IO = lprofCreateBufferIO(fileWriter); | |||
| 161 | IO->OwnFileWriter = 1; | |||
| 162 | return IO; | |||
| 163 | } | |||
| 164 | ||||
| 165 | static void setupIOBuffer() { | |||
| 166 | const char *BufferSzStr = 0; | |||
| 167 | BufferSzStr = getenv("LLVM_VP_BUFFER_SIZE"); | |||
| 168 | if (BufferSzStr && BufferSzStr[0]) { | |||
| 169 | VPBufferSize = atoi(BufferSzStr); | |||
| 170 | DynamicBufferIOBuffer = (uint8_t *)calloc(VPBufferSize, 1); | |||
| 171 | } | |||
| 172 | } | |||
| 173 | ||||
| 174 | /* Read profile data in \c ProfileFile and merge with in-memory | |||
| 175 | profile counters. Returns -1 if there is fatal error, otheriwse | |||
| 176 | 0 is returned. Returning 0 does not mean merge is actually | |||
| 177 | performed. If merge is actually done, *MergeDone is set to 1. | |||
| 178 | */ | |||
| 179 | static int doProfileMerging(FILE *ProfileFile, int *MergeDone) { | |||
| 180 | uint64_t ProfileFileSize; | |||
| 181 | char *ProfileBuffer; | |||
| 182 | ||||
| 183 | if (fseek(ProfileFile, 0L, SEEK_END2) == -1) { | |||
| 184 | 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 ()))); | |||
| 185 | strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Unable to merge profile data, unable to get size: %s\n" , strerror((*__errno_location ())));; | |||
| 186 | return -1; | |||
| 187 | } | |||
| 188 | ProfileFileSize = ftell(ProfileFile); | |||
| 189 | ||||
| 190 | /* Restore file offset. */ | |||
| 191 | if (fseek(ProfileFile, 0L, SEEK_SET0) == -1) { | |||
| 192 | 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 ()))); | |||
| 193 | strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Unable to merge profile data, unable to rewind: %s\n" , strerror((*__errno_location ())));; | |||
| 194 | return -1; | |||
| 195 | } | |||
| 196 | ||||
| 197 | /* Nothing to merge. */ | |||
| 198 | if (ProfileFileSize < sizeof(__llvm_profile_header)) { | |||
| 199 | if (ProfileFileSize) | |||
| 200 | 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."); | |||
| 201 | "source profile file is too small.")fprintf(stderr, "LLVM Profile Warning: " "Unable to merge profile data: %s\n" , "source profile file is too small.");; | |||
| 202 | return 0; | |||
| 203 | } | |||
| 204 | ||||
| 205 | ProfileBuffer = mmap(NULL((void*)0), ProfileFileSize, PROT_READ0x1, MAP_SHARED0x01 | MAP_FILE0, | |||
| 206 | fileno(ProfileFile), 0); | |||
| 207 | if (ProfileBuffer == MAP_FAILED((void *) -1)) { | |||
| 208 | 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 ()))); | |||
| 209 | strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Unable to merge profile data, mmap failed: %s\n" , strerror((*__errno_location ())));; | |||
| 210 | return -1; | |||
| 211 | } | |||
| 212 | ||||
| 213 | if (__llvm_profile_check_compatibility(ProfileBuffer, ProfileFileSize)) { | |||
| 214 | (void)munmap(ProfileBuffer, ProfileFileSize); | |||
| 215 | 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."); | |||
| 216 | "source profile file is not compatible.")fprintf(stderr, "LLVM Profile Warning: " "Unable to merge profile data: %s\n" , "source profile file is not compatible.");; | |||
| 217 | return 0; | |||
| 218 | } | |||
| 219 | ||||
| 220 | /* Now start merging */ | |||
| 221 | __llvm_profile_merge_from_buffer(ProfileBuffer, ProfileFileSize); | |||
| 222 | ||||
| 223 | // Truncate the file in case merging of value profile did not happend to | |||
| 224 | // prevent from leaving garbage data at the end of the profile file. | |||
| 225 | COMPILER_RT_FTRUNCATE(ProfileFile, __llvm_profile_get_size_for_buffer())ftruncate(fileno(ProfileFile),__llvm_profile_get_size_for_buffer ()); | |||
| 226 | ||||
| 227 | (void)munmap(ProfileBuffer, ProfileFileSize); | |||
| 228 | *MergeDone = 1; | |||
| 229 | ||||
| 230 | return 0; | |||
| 231 | } | |||
| 232 | ||||
| 233 | /* Create the directory holding the file, if needed. */ | |||
| 234 | static void createProfileDir(const char *Filename) { | |||
| 235 | size_t Length = strlen(Filename); | |||
| 236 | if (lprofFindFirstDirSeparator(Filename)) { | |||
| 237 | char *Copy = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | |||
| 238 | strncpy(Copy, Filename, Length + 1)__builtin_strncpy (Copy, Filename, Length + 1); | |||
| 239 | __llvm_profile_recursive_mkdir(Copy); | |||
| 240 | } | |||
| 241 | } | |||
| 242 | ||||
| 243 | /* Open the profile data for merging. It opens the file in r+b mode with | |||
| 244 | * file locking. If the file has content which is compatible with the | |||
| 245 | * current process, it also reads in the profile data in the file and merge | |||
| 246 | * it with in-memory counters. After the profile data is merged in memory, | |||
| 247 | * the original profile data is truncated and gets ready for the profile | |||
| 248 | * dumper. With profile merging enabled, each executable as well as any of | |||
| 249 | * its instrumented shared libraries dump profile data into their own data file. | |||
| 250 | */ | |||
| 251 | static FILE *openFileForMerging(const char *ProfileFileName, int *MergeDone) { | |||
| 252 | FILE *ProfileFile = NULL((void*)0); | |||
| 253 | int rc; | |||
| 254 | ||||
| 255 | ProfileFile = getProfileFile(); | |||
| 256 | if (ProfileFile) { | |||
| 257 | lprofLockFileHandle(ProfileFile); | |||
| 258 | } else { | |||
| 259 | createProfileDir(ProfileFileName); | |||
| 260 | ProfileFile = lprofOpenFileEx(ProfileFileName); | |||
| 261 | } | |||
| 262 | if (!ProfileFile) | |||
| 263 | return NULL((void*)0); | |||
| 264 | ||||
| 265 | rc = doProfileMerging(ProfileFile, MergeDone); | |||
| 266 | if (rc || (!*MergeDone && COMPILER_RT_FTRUNCATE(ProfileFile, 0L)ftruncate(fileno(ProfileFile),0L)) || | |||
| 267 | fseek(ProfileFile, 0L, SEEK_SET0) == -1) { | |||
| 268 | 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 ()))); | |||
| 269 | strerror(errno))fprintf(stderr, "LLVM Profile Error: " "Profile Merging of file %s failed: %s\n" , ProfileFileName, strerror((*__errno_location ())));; | |||
| 270 | fclose(ProfileFile); | |||
| 271 | return NULL((void*)0); | |||
| 272 | } | |||
| 273 | return ProfileFile; | |||
| 274 | } | |||
| 275 | ||||
| 276 | static FILE *getFileObject(const char *OutputName) { | |||
| 277 | FILE *File; | |||
| 278 | File = getProfileFile(); | |||
| 279 | if (File != NULL((void*)0)) { | |||
| 280 | return File; | |||
| 281 | } | |||
| 282 | ||||
| 283 | return fopen(OutputName, "ab"); | |||
| 284 | } | |||
| 285 | ||||
| 286 | /* Write profile data to file \c OutputName. */ | |||
| 287 | static int writeFile(const char *OutputName) { | |||
| 288 | int RetVal; | |||
| 289 | FILE *OutputFile; | |||
| 290 | ||||
| 291 | int MergeDone = 0; | |||
| 292 | VPMergeHook = &lprofMergeValueProfData; | |||
| 293 | if (doMerging()) | |||
| 294 | OutputFile = openFileForMerging(OutputName, &MergeDone); | |||
| 295 | else | |||
| 296 | OutputFile = getFileObject(OutputName); | |||
| 297 | ||||
| 298 | if (!OutputFile) | |||
| 299 | return -1; | |||
| 300 | ||||
| 301 | FreeHook = &free; | |||
| 302 | setupIOBuffer(); | |||
| 303 | ProfDataWriter fileWriter; | |||
| 304 | initFileWriter(&fileWriter, OutputFile); | |||
| 305 | RetVal = lprofWriteData(&fileWriter, lprofGetVPDataReader(), MergeDone); | |||
| 306 | ||||
| 307 | if (OutputFile == getProfileFile()) { | |||
| 308 | fflush(OutputFile); | |||
| 309 | if (doMerging()) { | |||
| 310 | lprofUnlockFileHandle(OutputFile); | |||
| 311 | } | |||
| 312 | } else { | |||
| 313 | fclose(OutputFile); | |||
| 314 | } | |||
| 315 | ||||
| 316 | return RetVal; | |||
| 317 | } | |||
| 318 | ||||
| 319 | /* Write order data to file \c OutputName. */ | |||
| 320 | static int writeOrderFile(const char *OutputName) { | |||
| 321 | int RetVal; | |||
| 322 | FILE *OutputFile; | |||
| 323 | ||||
| 324 | OutputFile = fopen(OutputName, "w"); | |||
| 325 | ||||
| 326 | if (!OutputFile) { | |||
| 327 | 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);; | |||
| 328 | return -1; | |||
| 329 | } | |||
| 330 | ||||
| 331 | FreeHook = &free; | |||
| 332 | setupIOBuffer(); | |||
| 333 | const uint32_t *DataBegin = __llvm_profile_begin_orderfile(); | |||
| 334 | RetVal = orderFileWriter(OutputFile, DataBegin); | |||
| 335 | ||||
| 336 | fclose(OutputFile); | |||
| 337 | return RetVal; | |||
| 338 | } | |||
| 339 | ||||
| 340 | #define LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE" "__LLVM_PROFILE_RT_INIT_ONCE" | |||
| 341 | ||||
| 342 | static void truncateCurrentFile(void) { | |||
| 343 | const char *Filename; | |||
| 344 | char *FilenameBuf; | |||
| 345 | FILE *File; | |||
| 346 | int Length; | |||
| 347 | ||||
| 348 | Length = getCurFilenameLength(); | |||
| 349 | FilenameBuf = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | |||
| 350 | Filename = getCurFilename(FilenameBuf, 0); | |||
| 351 | if (!Filename) | |||
| 352 | return; | |||
| 353 | ||||
| 354 | /* By pass file truncation to allow online raw profile | |||
| 355 | * merging. */ | |||
| 356 | if (lprofCurFilename.MergePoolSize) | |||
| 357 | return; | |||
| 358 | ||||
| 359 | /* Only create the profile directory and truncate an existing profile once. | |||
| 360 | * In continuous mode, this is necessary, as the profile is written-to by the | |||
| 361 | * runtime initializer. */ | |||
| 362 | int initialized = getenv(LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE") != NULL((void*)0); | |||
| 363 | if (initialized) | |||
| 364 | return; | |||
| 365 | #if defined(_WIN32) | |||
| 366 | _putenv(LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE" "=" LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE"); | |||
| 367 | #else | |||
| 368 | setenv(LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE", LPROF_INIT_ONCE_ENV"__LLVM_PROFILE_RT_INIT_ONCE", 1); | |||
| 369 | #endif | |||
| 370 | ||||
| 371 | createProfileDir(Filename); | |||
| 372 | ||||
| 373 | /* Truncate the file. Later we'll reopen and append. */ | |||
| 374 | File = fopen(Filename, "w"); | |||
| 375 | if (!File) | |||
| 376 | return; | |||
| 377 | fclose(File); | |||
| 378 | } | |||
| 379 | ||||
| 380 | static void initializeProfileForContinuousMode(void) { | |||
| 381 | #if defined(__Fuchsia__) || defined(_WIN32) | |||
| 382 | 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." );; | |||
| 383 | #else // defined(__Fuchsia__) || defined(_WIN32) | |||
| 384 | if (!__llvm_profile_is_continuous_mode_enabled()) | |||
| 385 | return; | |||
| 386 | ||||
| 387 | /* Get the sizes of various profile data sections. Taken from | |||
| 388 | * __llvm_profile_get_size_for_buffer(). */ | |||
| 389 | const __llvm_profile_data *DataBegin = __llvm_profile_begin_data(); | |||
| 390 | const __llvm_profile_data *DataEnd = __llvm_profile_end_data(); | |||
| 391 | const uint64_t *CountersBegin = __llvm_profile_begin_counters(); | |||
| 392 | const uint64_t *CountersEnd = __llvm_profile_end_counters(); | |||
| 393 | const char *NamesBegin = __llvm_profile_begin_names(); | |||
| 394 | const char *NamesEnd = __llvm_profile_end_names(); | |||
| 395 | const uint64_t NamesSize = (NamesEnd - NamesBegin) * sizeof(char); | |||
| 396 | uint64_t DataSize = __llvm_profile_get_data_size(DataBegin, DataEnd); | |||
| 397 | uint64_t CountersSize = CountersEnd - CountersBegin; | |||
| 398 | ||||
| 399 | /* Check that the counter and data sections in this image are page-aligned. */ | |||
| 400 | unsigned PageSize = getpagesize(); | |||
| 401 | if ((intptr_t)CountersBegin % PageSize != 0) { | |||
| 402 | 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); | |||
| 403 | CountersBegin, PageSize)fprintf(stderr, "LLVM Profile Error: " "Counters section not page-aligned (start = %p, pagesz = %u).\n" , CountersBegin, PageSize);; | |||
| 404 | return; | |||
| 405 | } | |||
| 406 | if ((intptr_t)DataBegin % PageSize != 0) { | |||
| 407 | 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); | |||
| 408 | DataBegin, PageSize)fprintf(stderr, "LLVM Profile Error: " "Data section not page-aligned (start = %p, pagesz = %u).\n" , DataBegin, PageSize);; | |||
| 409 | return; | |||
| 410 | } | |||
| 411 | ||||
| 412 | /* Open the raw profile in append mode. */ | |||
| 413 | int Length = getCurFilenameLength(); | |||
| 414 | char *FilenameBuf = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | |||
| 415 | const char *Filename = getCurFilename(FilenameBuf, 0); | |||
| 416 | if (!Filename) | |||
| 417 | return; | |||
| 418 | FILE *File = fopen(Filename, "a+b"); | |||
| 419 | if (!File) | |||
| 420 | return; | |||
| 421 | ||||
| 422 | int Fileno = fileno(File); | |||
| 423 | ||||
| 424 | /* Check that the offset within the file is page-aligned. */ | |||
| 425 | off_t CurrentFileOffset = ftello(File); | |||
| 426 | off_t OffsetModPage = CurrentFileOffset % PageSize; | |||
| 427 | if (OffsetModPage != 0) { | |||
| 428 | 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); | |||
| 429 | "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); | |||
| 430 | (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);; | |||
| 431 | return; | |||
| 432 | } | |||
| 433 | ||||
| 434 | /* Determine how much padding is needed before/after the counters and after | |||
| 435 | * the names. */ | |||
| 436 | uint64_t PaddingBytesBeforeCounters, PaddingBytesAfterCounters, | |||
| 437 | PaddingBytesAfterNames; | |||
| 438 | __llvm_profile_get_padding_sizes_for_counters( | |||
| 439 | DataSize, CountersSize, NamesSize, &PaddingBytesBeforeCounters, | |||
| 440 | &PaddingBytesAfterCounters, &PaddingBytesAfterNames); | |||
| 441 | ||||
| 442 | uint64_t PageAlignedCountersLength = | |||
| 443 | (CountersSize * sizeof(uint64_t)) + PaddingBytesAfterCounters; | |||
| 444 | uint64_t FileOffsetToCounters = | |||
| 445 | CurrentFileOffset + sizeof(__llvm_profile_header) + | |||
| 446 | (DataSize * sizeof(__llvm_profile_data)) + PaddingBytesBeforeCounters; | |||
| 447 | ||||
| 448 | /* Write the partial profile. This grows the file to a point where the mmap() | |||
| 449 | * can succeed. Leak the file handle, as the file should stay open. */ | |||
| 450 | setProfileFile(File); | |||
| 451 | int rc = writeFile(Filename); | |||
| 452 | if (rc) | |||
| 453 | 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 ())));; | |||
| 454 | setProfileFile(NULL((void*)0)); | |||
| 455 | ||||
| 456 | uint64_t *CounterMmap = (uint64_t *)mmap( | |||
| 457 | (void *)CountersBegin, PageAlignedCountersLength, PROT_READ0x1 | PROT_WRITE0x2, | |||
| 458 | MAP_FIXED0x10 | MAP_SHARED0x01, Fileno, FileOffsetToCounters); | |||
| 459 | if (CounterMmap != CountersBegin) { | |||
| 460 | 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); | |||
| 461 | "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); | |||
| 462 | " - 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); | |||
| 463 | " - 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); | |||
| 464 | " - 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); | |||
| 465 | " - 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); | |||
| 466 | 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); | |||
| 467 | 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);; | |||
| 468 | return; | |||
| 469 | } | |||
| 470 | #endif // defined(__Fuchsia__) || defined(_WIN32) | |||
| 471 | } | |||
| 472 | ||||
| 473 | static const char *DefaultProfileName = "default.profraw"; | |||
| 474 | static void resetFilenameToDefault(void) { | |||
| 475 | if (lprofCurFilename.FilenamePat && lprofCurFilename.OwnsFilenamePat) { | |||
| 476 | free((void *)lprofCurFilename.FilenamePat); | |||
| 477 | } | |||
| 478 | memset(&lprofCurFilename, 0, sizeof(lprofCurFilename)); | |||
| 479 | lprofCurFilename.FilenamePat = DefaultProfileName; | |||
| 480 | lprofCurFilename.PNS = PNS_default; | |||
| 481 | } | |||
| 482 | ||||
| 483 | static int containsMergeSpecifier(const char *FilenamePat, int I) { | |||
| 484 | return (FilenamePat[I] == 'm' || | |||
| 485 | (FilenamePat[I] >= '1' && FilenamePat[I] <= '9' && | |||
| 486 | /* If FilenamePat[I] is not '\0', the next byte is guaranteed | |||
| 487 | * to be in-bound as the string is null terminated. */ | |||
| 488 | FilenamePat[I + 1] == 'm')); | |||
| 489 | } | |||
| 490 | ||||
| 491 | /* Parses the pattern string \p FilenamePat and stores the result to | |||
| 492 | * lprofcurFilename structure. */ | |||
| 493 | static int parseFilenamePattern(const char *FilenamePat, | |||
| 494 | unsigned CopyFilenamePat) { | |||
| 495 | int NumPids = 0, NumHosts = 0, I; | |||
| 496 | char *PidChars = &lprofCurFilename.PidChars[0]; | |||
| 497 | char *Hostname = &lprofCurFilename.Hostname[0]; | |||
| 498 | int MergingEnabled = 0; | |||
| 499 | ||||
| 500 | /* Clean up cached prefix and filename. */ | |||
| 501 | if (lprofCurFilename.ProfilePathPrefix) | |||
| 502 | free((void *)lprofCurFilename.ProfilePathPrefix); | |||
| 503 | ||||
| 504 | if (lprofCurFilename.FilenamePat
| |||
| 505 | free((void *)lprofCurFilename.FilenamePat); | |||
| 506 | } | |||
| 507 | ||||
| 508 | memset(&lprofCurFilename, 0, sizeof(lprofCurFilename)); | |||
| 509 | ||||
| 510 | if (!CopyFilenamePat
| |||
| 511 | lprofCurFilename.FilenamePat = FilenamePat; | |||
| 512 | else { | |||
| 513 | 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 ))); | |||
| 514 | lprofCurFilename.OwnsFilenamePat = 1; | |||
| 515 | } | |||
| 516 | /* Check the filename for "%p", which indicates a pid-substitution. */ | |||
| 517 | for (I = 0; FilenamePat[I]; ++I) | |||
| 518 | if (FilenamePat[I] == '%') { | |||
| 519 | if (FilenamePat[++I] == 'p') { | |||
| 520 | if (!NumPids++) { | |||
| 521 | if (snprintf(PidChars, MAX_PID_SIZE16, "%ld", (long)getpid()) <= 0) { | |||
| 522 | 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); | |||
| 523 | "default name.",fprintf(stderr, "LLVM Profile Warning: " "Unable to get pid for filename pattern %s. Using the " "default name.", FilenamePat); | |||
| 524 | FilenamePat)fprintf(stderr, "LLVM Profile Warning: " "Unable to get pid for filename pattern %s. Using the " "default name.", FilenamePat);; | |||
| 525 | return -1; | |||
| 526 | } | |||
| 527 | } | |||
| 528 | } else if (FilenamePat[I] == 'h') { | |||
| 529 | if (!NumHosts++) | |||
| 530 | if (COMPILER_RT_GETHOSTNAME(Hostname, COMPILER_RT_MAX_HOSTLEN)lprofGetHostName(Hostname, 128)) { | |||
| 531 | 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); | |||
| 532 | "the default name.",fprintf(stderr, "LLVM Profile Warning: " "Unable to get hostname for filename pattern %s. Using " "the default name.", FilenamePat); | |||
| 533 | FilenamePat)fprintf(stderr, "LLVM Profile Warning: " "Unable to get hostname for filename pattern %s. Using " "the default name.", FilenamePat);; | |||
| 534 | return -1; | |||
| 535 | } | |||
| 536 | } else if (FilenamePat[I] == 'c') { | |||
| 537 | if (__llvm_profile_is_continuous_mode_enabled()) { | |||
| 538 | 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); | |||
| 539 | FilenamePat)fprintf(stderr, "LLVM Profile Warning: " "%%c specifier can only be specified once in %s.\n" , FilenamePat);; | |||
| 540 | return -1; | |||
| 541 | } | |||
| 542 | if (MergingEnabled) { | |||
| 543 | PROF_WARN("%%c specifier can not be used with profile merging (%%m) "fprintf(stderr, "LLVM Profile Warning: " "%%c specifier can not be used with profile merging (%%m) " "in %s.\n", FilenamePat); | |||
| 544 | "in %s.\n",fprintf(stderr, "LLVM Profile Warning: " "%%c specifier can not be used with profile merging (%%m) " "in %s.\n", FilenamePat); | |||
| 545 | FilenamePat)fprintf(stderr, "LLVM Profile Warning: " "%%c specifier can not be used with profile merging (%%m) " "in %s.\n", FilenamePat);; | |||
| 546 | return -1; | |||
| 547 | } | |||
| 548 | ||||
| 549 | __llvm_profile_enable_continuous_mode(); | |||
| 550 | I++; /* advance to 'c' */ | |||
| 551 | } else if (containsMergeSpecifier(FilenamePat, I)) { | |||
| 552 | if (MergingEnabled) { | |||
| 553 | 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); | |||
| 554 | FilenamePat)fprintf(stderr, "LLVM Profile Warning: " "%%m specifier can only be specified once in %s.\n" , FilenamePat);; | |||
| 555 | return -1; | |||
| 556 | } | |||
| 557 | if (__llvm_profile_is_continuous_mode_enabled()) { | |||
| 558 | PROF_WARN("%%c specifier can not be used with profile merging (%%m) "fprintf(stderr, "LLVM Profile Warning: " "%%c specifier can not be used with profile merging (%%m) " "in %s.\n", FilenamePat); | |||
| 559 | "in %s.\n",fprintf(stderr, "LLVM Profile Warning: " "%%c specifier can not be used with profile merging (%%m) " "in %s.\n", FilenamePat); | |||
| 560 | FilenamePat)fprintf(stderr, "LLVM Profile Warning: " "%%c specifier can not be used with profile merging (%%m) " "in %s.\n", FilenamePat);; | |||
| 561 | return -1; | |||
| 562 | } | |||
| 563 | MergingEnabled = 1; | |||
| 564 | if (FilenamePat[I] == 'm') | |||
| 565 | lprofCurFilename.MergePoolSize = 1; | |||
| 566 | else { | |||
| 567 | lprofCurFilename.MergePoolSize = FilenamePat[I] - '0'; | |||
| 568 | I++; /* advance to 'm' */ | |||
| 569 | } | |||
| 570 | } | |||
| 571 | } | |||
| 572 | ||||
| 573 | lprofCurFilename.NumPids = NumPids; | |||
| 574 | lprofCurFilename.NumHosts = NumHosts; | |||
| 575 | return 0; | |||
| 576 | } | |||
| 577 | ||||
| 578 | static void parseAndSetFilename(const char *FilenamePat, | |||
| 579 | ProfileNameSpecifier PNS, | |||
| 580 | unsigned CopyFilenamePat) { | |||
| 581 | ||||
| 582 | const char *OldFilenamePat = lprofCurFilename.FilenamePat; | |||
| 583 | ProfileNameSpecifier OldPNS = lprofCurFilename.PNS; | |||
| 584 | ||||
| 585 | /* The old profile name specifier takes precedence over the old one. */ | |||
| 586 | if (PNS < OldPNS) | |||
| 587 | return; | |||
| 588 | ||||
| 589 | if (!FilenamePat) | |||
| 590 | FilenamePat = DefaultProfileName; | |||
| 591 | ||||
| 592 | 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)))); })) { | |||
| 593 | lprofCurFilename.PNS = PNS; | |||
| 594 | return; | |||
| 595 | } | |||
| 596 | ||||
| 597 | /* When PNS >= OldPNS, the last one wins. */ | |||
| 598 | if (!FilenamePat
| |||
| 599 | resetFilenameToDefault(); | |||
| 600 | lprofCurFilename.PNS = PNS; | |||
| 601 | ||||
| 602 | if (!OldFilenamePat
| |||
| 603 | if (getenv("LLVM_PROFILE_VERBOSE")) | |||
| 604 | 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)); | |||
| 605 | lprofCurFilename.FilenamePat, getPNSStr(PNS))fprintf(stderr, "LLVM Profile Note: " "Set profile file path to \"%s\" via %s.\n" , lprofCurFilename.FilenamePat, getPNSStr(PNS));; | |||
| 606 | } else { | |||
| 607 | if (getenv("LLVM_PROFILE_VERBOSE")) | |||
| 608 | 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)); | |||
| ||||
| 609 | 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)); | |||
| 610 | 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));; | |||
| 611 | } | |||
| 612 | ||||
| 613 | truncateCurrentFile(); | |||
| 614 | initializeProfileForContinuousMode(); | |||
| 615 | } | |||
| 616 | ||||
| 617 | /* Return buffer length that is required to store the current profile | |||
| 618 | * filename with PID and hostname substitutions. */ | |||
| 619 | /* The length to hold uint64_t followed by 2 digit pool id including '_' */ | |||
| 620 | #define SIGLEN24 24 | |||
| 621 | static int getCurFilenameLength() { | |||
| 622 | int Len; | |||
| 623 | if (!lprofCurFilename.FilenamePat || !lprofCurFilename.FilenamePat[0]) | |||
| 624 | return 0; | |||
| 625 | ||||
| 626 | if (!(lprofCurFilename.NumPids || lprofCurFilename.NumHosts || | |||
| 627 | lprofCurFilename.MergePoolSize)) | |||
| 628 | return strlen(lprofCurFilename.FilenamePat); | |||
| 629 | ||||
| 630 | Len = strlen(lprofCurFilename.FilenamePat) + | |||
| 631 | lprofCurFilename.NumPids * (strlen(lprofCurFilename.PidChars) - 2) + | |||
| 632 | lprofCurFilename.NumHosts * (strlen(lprofCurFilename.Hostname) - 2); | |||
| 633 | if (lprofCurFilename.MergePoolSize) | |||
| 634 | Len += SIGLEN24; | |||
| 635 | return Len; | |||
| 636 | } | |||
| 637 | ||||
| 638 | /* Return the pointer to the current profile file name (after substituting | |||
| 639 | * PIDs and Hostnames in filename pattern. \p FilenameBuf is the buffer | |||
| 640 | * to store the resulting filename. If no substitution is needed, the | |||
| 641 | * current filename pattern string is directly returned, unless ForceUseBuf | |||
| 642 | * is enabled. */ | |||
| 643 | static const char *getCurFilename(char *FilenameBuf, int ForceUseBuf) { | |||
| 644 | int I, J, PidLength, HostNameLength, FilenamePatLength; | |||
| 645 | const char *FilenamePat = lprofCurFilename.FilenamePat; | |||
| 646 | ||||
| 647 | if (!lprofCurFilename.FilenamePat || !lprofCurFilename.FilenamePat[0]) | |||
| 648 | return 0; | |||
| 649 | ||||
| 650 | if (!(lprofCurFilename.NumPids || lprofCurFilename.NumHosts || | |||
| 651 | lprofCurFilename.MergePoolSize || | |||
| 652 | __llvm_profile_is_continuous_mode_enabled())) { | |||
| 653 | if (!ForceUseBuf) | |||
| 654 | return lprofCurFilename.FilenamePat; | |||
| 655 | ||||
| 656 | FilenamePatLength = strlen(lprofCurFilename.FilenamePat); | |||
| 657 | memcpy(FilenameBuf, lprofCurFilename.FilenamePat, FilenamePatLength); | |||
| 658 | FilenameBuf[FilenamePatLength] = '\0'; | |||
| 659 | return FilenameBuf; | |||
| 660 | } | |||
| 661 | ||||
| 662 | PidLength = strlen(lprofCurFilename.PidChars); | |||
| 663 | HostNameLength = strlen(lprofCurFilename.Hostname); | |||
| 664 | /* Construct the new filename. */ | |||
| 665 | for (I = 0, J = 0; FilenamePat[I]; ++I) | |||
| 666 | if (FilenamePat[I] == '%') { | |||
| 667 | if (FilenamePat[++I] == 'p') { | |||
| 668 | memcpy(FilenameBuf + J, lprofCurFilename.PidChars, PidLength); | |||
| 669 | J += PidLength; | |||
| 670 | } else if (FilenamePat[I] == 'h') { | |||
| 671 | memcpy(FilenameBuf + J, lprofCurFilename.Hostname, HostNameLength); | |||
| 672 | J += HostNameLength; | |||
| 673 | } else if (containsMergeSpecifier(FilenamePat, I)) { | |||
| 674 | char LoadModuleSignature[SIGLEN24]; | |||
| 675 | int S; | |||
| 676 | int ProfilePoolId = getpid() % lprofCurFilename.MergePoolSize; | |||
| 677 | S = snprintf(LoadModuleSignature, SIGLEN24, "%" PRIu64"ll" "u" "_%d", | |||
| 678 | lprofGetLoadModuleSignature(), ProfilePoolId); | |||
| 679 | if (S == -1 || S > SIGLEN24) | |||
| 680 | S = SIGLEN24; | |||
| 681 | memcpy(FilenameBuf + J, LoadModuleSignature, S); | |||
| 682 | J += S; | |||
| 683 | if (FilenamePat[I] != 'm') | |||
| 684 | I++; | |||
| 685 | } | |||
| 686 | /* Drop any unknown substitutions. */ | |||
| 687 | } else | |||
| 688 | FilenameBuf[J++] = FilenamePat[I]; | |||
| 689 | FilenameBuf[J] = 0; | |||
| 690 | ||||
| 691 | return FilenameBuf; | |||
| 692 | } | |||
| 693 | ||||
| 694 | /* Returns the pointer to the environment variable | |||
| 695 | * string. Returns null if the env var is not set. */ | |||
| 696 | static const char *getFilenamePatFromEnv(void) { | |||
| 697 | const char *Filename = getenv("LLVM_PROFILE_FILE"); | |||
| 698 | if (!Filename || !Filename[0]) | |||
| 699 | return 0; | |||
| 700 | return Filename; | |||
| 701 | } | |||
| 702 | ||||
| 703 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | |||
| 704 | const char *__llvm_profile_get_path_prefix(void) { | |||
| 705 | int Length; | |||
| 706 | char *FilenameBuf, *Prefix; | |||
| 707 | const char *Filename, *PrefixEnd; | |||
| 708 | ||||
| 709 | if (lprofCurFilename.ProfilePathPrefix) | |||
| 710 | return lprofCurFilename.ProfilePathPrefix; | |||
| 711 | ||||
| 712 | Length = getCurFilenameLength(); | |||
| 713 | FilenameBuf = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | |||
| 714 | Filename = getCurFilename(FilenameBuf, 0); | |||
| 715 | if (!Filename) | |||
| 716 | return "\0"; | |||
| 717 | ||||
| 718 | PrefixEnd = lprofFindLastDirSeparator(Filename); | |||
| 719 | if (!PrefixEnd) | |||
| 720 | return "\0"; | |||
| 721 | ||||
| 722 | Length = PrefixEnd - Filename + 1; | |||
| 723 | Prefix = (char *)malloc(Length + 1); | |||
| 724 | if (!Prefix) { | |||
| 725 | PROF_ERR("Failed to %s\n", "allocate memory.")fprintf(stderr, "LLVM Profile Error: " "Failed to %s\n", "allocate memory." );; | |||
| 726 | return "\0"; | |||
| 727 | } | |||
| 728 | memcpy(Prefix, Filename, Length); | |||
| 729 | Prefix[Length] = '\0'; | |||
| 730 | lprofCurFilename.ProfilePathPrefix = Prefix; | |||
| 731 | return Prefix; | |||
| 732 | } | |||
| 733 | ||||
| 734 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | |||
| 735 | const char *__llvm_profile_get_filename(void) { | |||
| 736 | int Length; | |||
| 737 | char *FilenameBuf; | |||
| 738 | const char *Filename; | |||
| 739 | ||||
| 740 | Length = getCurFilenameLength(); | |||
| 741 | FilenameBuf = (char *)malloc(Length + 1); | |||
| 742 | if (!FilenameBuf) { | |||
| 743 | PROF_ERR("Failed to %s\n", "allocate memory.")fprintf(stderr, "LLVM Profile Error: " "Failed to %s\n", "allocate memory." );; | |||
| 744 | return "\0"; | |||
| 745 | } | |||
| 746 | Filename = getCurFilename(FilenameBuf, 1); | |||
| 747 | if (!Filename) | |||
| 748 | return "\0"; | |||
| 749 | ||||
| 750 | return FilenameBuf; | |||
| 751 | } | |||
| 752 | ||||
| 753 | /* This method is invoked by the runtime initialization hook | |||
| 754 | * InstrProfilingRuntime.o if it is linked in. Both user specified | |||
| 755 | * profile path via -fprofile-instr-generate= and LLVM_PROFILE_FILE | |||
| 756 | * environment variable can override this default value. */ | |||
| 757 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | |||
| 758 | void __llvm_profile_initialize_file(void) { | |||
| 759 | const char *EnvFilenamePat; | |||
| 760 | const char *SelectedPat = NULL((void*)0); | |||
| 761 | ProfileNameSpecifier PNS = PNS_unknown; | |||
| 762 | int hasCommandLineOverrider = (INSTR_PROF_PROFILE_NAME_VAR__llvm_profile_filename[0] != 0); | |||
| 763 | ||||
| 764 | EnvFilenamePat = getFilenamePatFromEnv(); | |||
| 765 | if (EnvFilenamePat) { | |||
| 766 | /* Pass CopyFilenamePat = 1, to ensure that the filename would be valid | |||
| 767 | at the moment when __llvm_profile_write_file() gets executed. */ | |||
| 768 | parseAndSetFilename(EnvFilenamePat, PNS_environment, 1); | |||
| 769 | return; | |||
| 770 | } else if (hasCommandLineOverrider) { | |||
| 771 | SelectedPat = INSTR_PROF_PROFILE_NAME_VAR__llvm_profile_filename; | |||
| 772 | PNS = PNS_command_line; | |||
| 773 | } else { | |||
| 774 | SelectedPat = NULL((void*)0); | |||
| 775 | PNS = PNS_default; | |||
| 776 | } | |||
| 777 | ||||
| 778 | parseAndSetFilename(SelectedPat, PNS, 0); | |||
| 779 | } | |||
| 780 | ||||
| 781 | /* This API is directly called by the user application code. It has the | |||
| 782 | * highest precedence compared with LLVM_PROFILE_FILE environment variable | |||
| 783 | * and command line option -fprofile-instr-generate=<profile_name>. | |||
| 784 | */ | |||
| 785 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | |||
| 786 | void __llvm_profile_set_filename(const char *FilenamePat) { | |||
| 787 | if (__llvm_profile_is_continuous_mode_enabled()) | |||
| ||||
| 788 | return; | |||
| 789 | parseAndSetFilename(FilenamePat, PNS_runtime_api, 1); | |||
| 790 | } | |||
| 791 | ||||
| 792 | /* The public API for writing profile data into the file with name | |||
| 793 | * set by previous calls to __llvm_profile_set_filename or | |||
| 794 | * __llvm_profile_override_default_filename or | |||
| 795 | * __llvm_profile_initialize_file. */ | |||
| 796 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | |||
| 797 | int __llvm_profile_write_file(void) { | |||
| 798 | int rc, Length; | |||
| 799 | const char *Filename; | |||
| 800 | char *FilenameBuf; | |||
| 801 | int PDeathSig = 0; | |||
| 802 | ||||
| 803 | if (lprofProfileDumped() || __llvm_profile_is_continuous_mode_enabled()) { | |||
| 804 | 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");; | |||
| 805 | return 0; | |||
| 806 | } | |||
| 807 | ||||
| 808 | Length = getCurFilenameLength(); | |||
| 809 | FilenameBuf = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | |||
| 810 | Filename = getCurFilename(FilenameBuf, 0); | |||
| 811 | ||||
| 812 | /* Check the filename. */ | |||
| 813 | if (!Filename) { | |||
| 814 | 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");; | |||
| 815 | return -1; | |||
| 816 | } | |||
| 817 | ||||
| 818 | /* Check if there is llvm/runtime version mismatch. */ | |||
| 819 | if (GET_VERSION(__llvm_profile_get_version())((__llvm_profile_get_version()) & ~0xff00000000000000ULL) != INSTR_PROF_RAW_VERSION5) { | |||
| 820 | 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)); | |||
| 821 | "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)); | |||
| 822 | 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)); | |||
| 823 | (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));; | |||
| 824 | return -1; | |||
| 825 | } | |||
| 826 | ||||
| 827 | // Temporarily suspend getting SIGKILL when the parent exits. | |||
| 828 | PDeathSig = lprofSuspendSigKill(); | |||
| 829 | ||||
| 830 | /* Write profile data to the file. */ | |||
| 831 | rc = writeFile(Filename); | |||
| 832 | if (rc) | |||
| 833 | 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 ())));; | |||
| 834 | ||||
| 835 | // Restore SIGKILL. | |||
| 836 | if (PDeathSig == 1) | |||
| 837 | lprofRestoreSigKill(); | |||
| 838 | ||||
| 839 | return rc; | |||
| 840 | } | |||
| 841 | ||||
| 842 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | |||
| 843 | int __llvm_profile_dump(void) { | |||
| 844 | if (!doMerging()) | |||
| 845 | 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"); | |||
| 846 | " 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"); | |||
| 847 | "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"); | |||
| 848 | "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");; | |||
| 849 | int rc = __llvm_profile_write_file(); | |||
| 850 | lprofSetProfileDumped(); | |||
| 851 | return rc; | |||
| 852 | } | |||
| 853 | ||||
| 854 | /* Order file data will be saved in a file with suffx .order. */ | |||
| 855 | static const char *OrderFileSuffix = ".order"; | |||
| 856 | ||||
| 857 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | |||
| 858 | int __llvm_orderfile_write_file(void) { | |||
| 859 | int rc, Length, LengthBeforeAppend, SuffixLength; | |||
| 860 | const char *Filename; | |||
| 861 | char *FilenameBuf; | |||
| 862 | int PDeathSig = 0; | |||
| 863 | ||||
| 864 | SuffixLength = strlen(OrderFileSuffix); | |||
| 865 | Length = getCurFilenameLength() + SuffixLength; | |||
| 866 | FilenameBuf = (char *)COMPILER_RT_ALLOCA__builtin_alloca(Length + 1); | |||
| 867 | Filename = getCurFilename(FilenameBuf, 1); | |||
| 868 | ||||
| 869 | /* Check the filename. */ | |||
| 870 | if (!Filename) { | |||
| 871 | 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");; | |||
| 872 | return -1; | |||
| 873 | } | |||
| 874 | ||||
| 875 | /* Append order file suffix */ | |||
| 876 | LengthBeforeAppend = strlen(Filename); | |||
| 877 | memcpy(FilenameBuf + LengthBeforeAppend, OrderFileSuffix, SuffixLength); | |||
| 878 | FilenameBuf[LengthBeforeAppend + SuffixLength] = '\0'; | |||
| 879 | ||||
| 880 | /* Check if there is llvm/runtime version mismatch. */ | |||
| 881 | if (GET_VERSION(__llvm_profile_get_version())((__llvm_profile_get_version()) & ~0xff00000000000000ULL) != INSTR_PROF_RAW_VERSION5) { | |||
| 882 | 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)); | |||
| 883 | "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)); | |||
| 884 | 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)); | |||
| 885 | (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));; | |||
| 886 | return -1; | |||
| 887 | } | |||
| 888 | ||||
| 889 | // Temporarily suspend getting SIGKILL when the parent exits. | |||
| 890 | PDeathSig = lprofSuspendSigKill(); | |||
| 891 | ||||
| 892 | /* Write order data to the file. */ | |||
| 893 | rc = writeOrderFile(Filename); | |||
| 894 | if (rc) | |||
| 895 | 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 ())));; | |||
| 896 | ||||
| 897 | // Restore SIGKILL. | |||
| 898 | if (PDeathSig == 1) | |||
| 899 | lprofRestoreSigKill(); | |||
| 900 | ||||
| 901 | return rc; | |||
| 902 | } | |||
| 903 | ||||
| 904 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | |||
| 905 | int __llvm_orderfile_dump(void) { | |||
| 906 | int rc = __llvm_orderfile_write_file(); | |||
| 907 | return rc; | |||
| 908 | } | |||
| 909 | ||||
| 910 | static void writeFileWithoutReturn(void) { __llvm_profile_write_file(); } | |||
| 911 | ||||
| 912 | COMPILER_RT_VISIBILITY__attribute__((visibility("hidden"))) | |||
| 913 | int __llvm_profile_register_write_file_atexit(void) { | |||
| 914 | static int HasBeenRegistered = 0; | |||
| 915 | ||||
| 916 | if (HasBeenRegistered) | |||
| 917 | return 0; | |||
| 918 | ||||
| 919 | lprofSetupValueProfiler(); | |||
| 920 | ||||
| 921 | HasBeenRegistered = 1; | |||
| 922 | return atexit(writeFileWithoutReturn); | |||
| 923 | } | |||
| 924 | ||||
| 925 | #endif |