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| /*===- InstrProfilingBuffer.c - Write instrumentation to a memory buffer --===*\
|*
|* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|* See https://llvm.org/LICENSE.txt for license information.
|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|*
\*===----------------------------------------------------------------------===*/
#include "InstrProfiling.h"
#include "InstrProfilingInternal.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);
}
COMPILER_RT_VISIBILITY
uint64_t __llvm_profile_get_data_size(const __llvm_profile_data *Begin,
const __llvm_profile_data *End) {
intptr_t BeginI = (intptr_t)Begin, EndI = (intptr_t)End;
return ((EndI + sizeof(__llvm_profile_data) - 1) - BeginI) /
sizeof(__llvm_profile_data);
}
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 = (NamesEnd - NamesBegin) * sizeof(char);
const uint8_t Padding = __llvm_profile_get_num_padding_bytes(NamesSize);
return sizeof(__llvm_profile_header) +
(__llvm_profile_get_data_size(DataBegin, DataEnd) *
sizeof(__llvm_profile_data)) +
(CountersEnd - CountersBegin) * sizeof(uint64_t) + NamesSize + Padding;
}
COMPILER_RT_VISIBILITY
void initBufferWriter(ProfDataWriter *BufferWriter, char *Buffer) {
BufferWriter->Write = lprofBufferWriter;
BufferWriter->WriterCtx = Buffer;
}
COMPILER_RT_VISIBILITY int __llvm_profile_write_buffer(char *Buffer) {
ProfDataWriter BufferWriter;
initBufferWriter(&BufferWriter, Buffer);
return lprofWriteData(&BufferWriter, 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) {
ProfDataWriter BufferWriter;
initBufferWriter(&BufferWriter, Buffer);
return lprofWriteDataImpl(&BufferWriter, DataBegin, DataEnd, CountersBegin,
CountersEnd, 0, NamesBegin, NamesEnd, 0);
}
|