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/*===- 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);
}
|
