1 /*===- InstrProfilingBuffer.c - Write instrumentation to a memory buffer --===*\ 2 |* 3 |* The LLVM Compiler Infrastructure 4 |* 5 |* This file is distributed under the University of Illinois Open Source 6 |* License. See LICENSE.TXT for details. 7 |* 8 \*===----------------------------------------------------------------------===*/ 9 10 #include "InstrProfiling.h" 11 #include "InstrProfilingInternal.h" 12 13 COMPILER_RT_VISIBILITY 14 uint64_t __llvm_profile_get_size_for_buffer(void) { 15 const __llvm_profile_data *DataBegin = __llvm_profile_begin_data(); 16 const __llvm_profile_data *DataEnd = __llvm_profile_end_data(); 17 const uint64_t *CountersBegin = __llvm_profile_begin_counters(); 18 const uint64_t *CountersEnd = __llvm_profile_end_counters(); 19 const char *NamesBegin = __llvm_profile_begin_names(); 20 const char *NamesEnd = __llvm_profile_end_names(); 21 22 return __llvm_profile_get_size_for_buffer_internal( 23 DataBegin, DataEnd, CountersBegin, CountersEnd, NamesBegin, NamesEnd); 24 } 25 26 #define PROFILE_RANGE_SIZE(Range) (Range##End - Range##Begin) 27 28 COMPILER_RT_VISIBILITY 29 uint64_t __llvm_profile_get_size_for_buffer_internal( 30 const __llvm_profile_data *DataBegin, const __llvm_profile_data *DataEnd, 31 const uint64_t *CountersBegin, const uint64_t *CountersEnd, 32 const char *NamesBegin, const char *NamesEnd) { 33 /* Match logic in __llvm_profile_write_buffer(). */ 34 const uint64_t NamesSize = PROFILE_RANGE_SIZE(Names) * sizeof(char); 35 const uint8_t Padding = __llvm_profile_get_num_padding_bytes(NamesSize); 36 return sizeof(__llvm_profile_header) + 37 PROFILE_RANGE_SIZE(Data) * sizeof(__llvm_profile_data) + 38 PROFILE_RANGE_SIZE(Counters) * sizeof(uint64_t) + NamesSize + Padding; 39 } 40 41 COMPILER_RT_VISIBILITY int __llvm_profile_write_buffer(char *Buffer) { 42 return llvmWriteProfData(llvmBufferWriter, Buffer, 0, 0); 43 } 44 45 COMPILER_RT_VISIBILITY int __llvm_profile_write_buffer_internal( 46 char *Buffer, const __llvm_profile_data *DataBegin, 47 const __llvm_profile_data *DataEnd, const uint64_t *CountersBegin, 48 const uint64_t *CountersEnd, const char *NamesBegin, const char *NamesEnd) { 49 return llvmWriteProfDataImpl(llvmBufferWriter, Buffer, DataBegin, DataEnd, 50 CountersBegin, CountersEnd, 0, 0, NamesBegin, 51 NamesEnd); 52 } 53