| /*===- InstrProfilingWriter.c - Write instrumentation to a file or 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" |
| |
| COMPILER_RT_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); |
| } |
| |
| COMPILER_RT_VISIBILITY int llvmWriteProfDataImpl( |
| WriterCallback Writer, void *WriterCtx, |
| const __llvm_profile_data *DataBegin, const __llvm_profile_data *DataEnd, |
| const uint64_t *CountersBegin, const uint64_t *CountersEnd, |
| const uint8_t *ValueDataBegin, const uint64_t ValueDataSize, |
| const char *NamesBegin, const char *NamesEnd) { |
| |
| /* 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 = __llvm_profile_get_num_padding_bytes(NamesSize); |
| |
| /* Enough zeroes for padding. */ |
| const char Zeroes[sizeof(uint64_t)] = {0}; |
| |
| /* Create the header. */ |
| __llvm_profile_header Header; |
| |
| if (!DataSize) |
| return 0; |
| |
| /* Initialize header struture. */ |
| #define INSTR_PROF_RAW_HEADER(Type, Name, Init) Header.Name = Init; |
| #include "InstrProfData.inc" |
| |
| /* Write the data. */ |
| ProfDataIOVec IOVec[] = { |
| {&Header, sizeof(__llvm_profile_header), 1}, |
| {DataBegin, sizeof(__llvm_profile_data), DataSize}, |
| {CountersBegin, sizeof(uint64_t), CountersSize}, |
| {NamesBegin, sizeof(char), NamesSize}, |
| {Zeroes, sizeof(char), Padding}}; |
| if (Writer(IOVec, sizeof(IOVec) / sizeof(*IOVec), &WriterCtx)) |
| return -1; |
| if (ValueDataBegin) { |
| ProfDataIOVec IOVec2[] = {{ValueDataBegin, sizeof(char), ValueDataSize}}; |
| if (Writer(IOVec2, sizeof(IOVec2) / sizeof(*IOVec2), &WriterCtx)) |
| return -1; |
| } |
| return 0; |
| } |