COMPILER_RT_VISIBILITY void __llvm_profile_reset_counters(void) { uint64_t *I = __llvm_profile_begin_counters(); uint64_t *E = __llvm_profile_end_counters(); memset(I, 0, sizeof(uint64_t) * (E - I)); const __llvm_profile_data *DataBegin = __llvm_profile_begin_data(); const __llvm_profile_data *DataEnd = __llvm_profile_end_data(); const __llvm_profile_data *DI; for (DI = DataBegin; DI != DataEnd; ++DI) { uint64_t CurrentVSiteCount = 0; uint32_t VKI, i; if (!DI->Values) continue; ValueProfNode **ValueCounters = (ValueProfNode **)DI->Values; for (VKI = IPVK_First; VKI <= IPVK_Last; ++VKI) CurrentVSiteCount += DI->NumValueSites[VKI]; for (i = 0; i < CurrentVSiteCount; ++i) { ValueProfNode *CurrentVNode = ValueCounters[i]; while (CurrentVNode) { CurrentVNode->VData.Count = 0; CurrentVNode = CurrentVNode->Next; } } } }
uint64_t __llvm_profile_get_size_for_buffer(void) { const __llvm_profile_data *DataBegin = __llvm_profile_begin_data(); const __llvm_profile_data *DataEnd = __llvm_profile_end_data(); const uint64_t *CountersBegin = __llvm_profile_begin_counters(); const uint64_t *CountersEnd = __llvm_profile_end_counters(); const char *NamesBegin = __llvm_profile_begin_names(); const char *NamesEnd = __llvm_profile_end_names(); return __llvm_profile_get_size_for_buffer_internal( DataBegin, DataEnd, CountersBegin, CountersEnd, NamesBegin, NamesEnd); }
COMPILER_RT_VISIBILITY int lprofWriteData(WriterCallback Writer, void *WriterCtx, VPDataReaderType *VPDataReader) { /* Match logic in __llvm_profile_write_buffer(). */ const __llvm_profile_data *DataBegin = __llvm_profile_begin_data(); const __llvm_profile_data *DataEnd = __llvm_profile_end_data(); const uint64_t *CountersBegin = __llvm_profile_begin_counters(); const uint64_t *CountersEnd = __llvm_profile_end_counters(); const char *NamesBegin = __llvm_profile_begin_names(); const char *NamesEnd = __llvm_profile_end_names(); return lprofWriteDataImpl(Writer, WriterCtx, DataBegin, DataEnd, CountersBegin, CountersEnd, VPDataReader, NamesBegin, NamesEnd); }
LLVM_LIBRARY_VISIBILITY int llvmWriteProfData(WriterCallback Writer, void *WriterCtx, const uint8_t *ValueDataBegin, const uint64_t ValueDataSize) { /* Match logic in __llvm_profile_write_buffer(). */ const __llvm_profile_data *DataBegin = __llvm_profile_begin_data(); const __llvm_profile_data *DataEnd = __llvm_profile_end_data(); const uint64_t *CountersBegin = __llvm_profile_begin_counters(); const uint64_t *CountersEnd = __llvm_profile_end_counters(); const char *NamesBegin = __llvm_profile_begin_names(); const char *NamesEnd = __llvm_profile_end_names(); return llvmWriteProfDataImpl(Writer, WriterCtx, DataBegin, DataEnd, CountersBegin, CountersEnd, ValueDataBegin, ValueDataSize, NamesBegin, NamesEnd); }
int __llvm_profile_write_buffer(char *Buffer) { /* Match logic in __llvm_profile_get_size_for_buffer(). * Match logic in __llvm_profile_write_file(). */ const __llvm_profile_data *DataBegin = __llvm_profile_begin_data(); const __llvm_profile_data *DataEnd = __llvm_profile_end_data(); const uint64_t *CountersBegin = __llvm_profile_begin_counters(); const uint64_t *CountersEnd = __llvm_profile_end_counters(); const char *NamesBegin = __llvm_profile_begin_names(); const char *NamesEnd = __llvm_profile_end_names(); return __llvm_profile_write_buffer_internal(Buffer, DataBegin, DataEnd, CountersBegin, CountersEnd, NamesBegin, NamesEnd); }
COMPILER_RT_VISIBILITY uint64_t lprofGetLoadModuleSignature() { /* A very fast way to compute a module signature. */ uint64_t CounterSize = (uint64_t)(__llvm_profile_end_counters() - __llvm_profile_begin_counters()); uint64_t DataSize = __llvm_profile_get_data_size(__llvm_profile_begin_data(), __llvm_profile_end_data()); uint64_t NamesSize = (uint64_t)(__llvm_profile_end_names() - __llvm_profile_begin_names()); uint64_t NumVnodes = (uint64_t)(__llvm_profile_end_vnodes() - __llvm_profile_begin_vnodes()); const __llvm_profile_data *FirstD = __llvm_profile_begin_data(); return (NamesSize << 40) + (CounterSize << 30) + (DataSize << 20) + (NumVnodes << 10) + (DataSize > 0 ? FirstD->NameRef : 0); }
/* Returns 1 if profile is not structurally compatible. */ COMPILER_RT_VISIBILITY int __llvm_profile_check_compatibility(const char *ProfileData, uint64_t ProfileSize) { /* Check profile header only for now */ __llvm_profile_header *Header = (__llvm_profile_header *)ProfileData; __llvm_profile_data *SrcDataStart, *SrcDataEnd, *SrcData, *DstData; SrcDataStart = (__llvm_profile_data *)(ProfileData + sizeof(__llvm_profile_header)); SrcDataEnd = SrcDataStart + Header->DataSize; if (ProfileSize < sizeof(__llvm_profile_header)) return 1; /* Check the header first. */ if (Header->Magic != __llvm_profile_get_magic() || Header->Version != __llvm_profile_get_version() || Header->DataSize != __llvm_profile_get_data_size(__llvm_profile_begin_data(), __llvm_profile_end_data()) || Header->CountersSize != (uint64_t)(__llvm_profile_end_counters() - __llvm_profile_begin_counters()) || Header->NamesSize != (uint64_t)(__llvm_profile_end_names() - __llvm_profile_begin_names()) || Header->ValueKindLast != IPVK_Last) return 1; if (ProfileSize < sizeof(__llvm_profile_header) + Header->DataSize * sizeof(__llvm_profile_data) + Header->NamesSize + Header->CountersSize) return 1; for (SrcData = SrcDataStart, DstData = (__llvm_profile_data *)__llvm_profile_begin_data(); SrcData < SrcDataEnd; ++SrcData, ++DstData) { if (SrcData->NameRef != DstData->NameRef || SrcData->FuncHash != DstData->FuncHash || SrcData->NumCounters != DstData->NumCounters) return 1; } /* Matched! */ return 0; }
static int writeFile(FILE *File) { /* Match logic in __llvm_profile_write_buffer(). */ const __llvm_profile_data *DataBegin = __llvm_profile_begin_data(); const __llvm_profile_data *DataEnd = __llvm_profile_end_data(); const uint64_t *CountersBegin = __llvm_profile_begin_counters(); const uint64_t *CountersEnd = __llvm_profile_end_counters(); const char *NamesBegin = __llvm_profile_begin_names(); const char *NamesEnd = __llvm_profile_end_names(); /* Calculate size of sections. */ const uint64_t DataSize = DataEnd - DataBegin; const uint64_t CountersSize = CountersEnd - CountersBegin; const uint64_t NamesSize = NamesEnd - NamesBegin; const uint64_t Padding = sizeof(uint64_t) - NamesSize % sizeof(uint64_t); /* Enough zeroes for padding. */ const char Zeroes[sizeof(uint64_t)] = {0}; /* Create the header. */ uint64_t Header[PROFILE_HEADER_SIZE]; Header[0] = __llvm_profile_get_magic(); Header[1] = __llvm_profile_get_version(); Header[2] = DataSize; Header[3] = CountersSize; Header[4] = NamesSize; Header[5] = (uintptr_t)CountersBegin; Header[6] = (uintptr_t)NamesBegin; /* Write the data. */ #define CHECK_fwrite(Data, Size, Length, File) \ do { if (fwrite(Data, Size, Length, File) != Length) return -1; } while (0) CHECK_fwrite(Header, sizeof(uint64_t), PROFILE_HEADER_SIZE, File); CHECK_fwrite(DataBegin, sizeof(__llvm_profile_data), DataSize, File); CHECK_fwrite(CountersBegin, sizeof(uint64_t), CountersSize, File); CHECK_fwrite(NamesBegin, sizeof(char), NamesSize, File); CHECK_fwrite(Zeroes, sizeof(char), Padding, File); #undef CHECK_fwrite return 0; }