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