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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
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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