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