| /*===- InstrProfilingBuffer.c - Write instrumentation to a memory buffer --===*\ |
| |* |
| |* The LLVM Compiler Infrastructure |
| |* |
| |* This file is distributed under the University of Illinois Open Source |
| |* License. See LICENSE.TXT for details. |
| |* |
| \*===----------------------------------------------------------------------===*/ |
| |
| #include "InstrProfiling.h" |
| #include "InstrProfilingInternal.h" |
| |
| #include <string.h> |
| |
| COMPILER_RT_VISIBILITY |
| 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); |
| } |
| |
| #define PROFILE_RANGE_SIZE(Range) (Range##End - Range##Begin) |
| |
| COMPILER_RT_VISIBILITY |
| uint64_t __llvm_profile_get_size_for_buffer_internal( |
| const __llvm_profile_data *DataBegin, const __llvm_profile_data *DataEnd, |
| const uint64_t *CountersBegin, const uint64_t *CountersEnd, |
| const char *NamesBegin, const char *NamesEnd) { |
| /* Match logic in __llvm_profile_write_buffer(). */ |
| const uint64_t NamesSize = PROFILE_RANGE_SIZE(Names) * sizeof(char); |
| const uint8_t Padding = __llvm_profile_get_num_padding_bytes(NamesSize); |
| return sizeof(__llvm_profile_header) + |
| PROFILE_RANGE_SIZE(Data) * sizeof(__llvm_profile_data) + |
| PROFILE_RANGE_SIZE(Counters) * sizeof(uint64_t) + NamesSize + Padding; |
| } |
| |
| /* The buffer writer is reponsponsible in keeping writer state |
| * across the call. |
| */ |
| static uint32_t bufferWriter(ProfDataIOVec *IOVecs, uint32_t NumIOVecs, |
| void **WriterCtx) { |
| uint32_t I; |
| char **Buffer = (char **)WriterCtx; |
| for (I = 0; I < NumIOVecs; I++) { |
| size_t Length = IOVecs[I].ElmSize * IOVecs[I].NumElm; |
| memcpy(*Buffer, IOVecs[I].Data, Length); |
| *Buffer += Length; |
| } |
| return 0; |
| } |
| |
| COMPILER_RT_VISIBILITY int __llvm_profile_write_buffer(char *Buffer) { |
| return llvmWriteProfData(bufferWriter, Buffer, 0, 0); |
| } |
| |
| COMPILER_RT_VISIBILITY int __llvm_profile_write_buffer_internal( |
| char *Buffer, const __llvm_profile_data *DataBegin, |
| const __llvm_profile_data *DataEnd, const uint64_t *CountersBegin, |
| const uint64_t *CountersEnd, const char *NamesBegin, const char *NamesEnd) { |
| return llvmWriteProfDataImpl(bufferWriter, Buffer, DataBegin, DataEnd, |
| CountersBegin, CountersEnd, 0, 0, NamesBegin, |
| NamesEnd); |
| } |