1/*===- InstrProfilingBuffer.c - Write instrumentation to a memory buffer --===*\
2|*
3|*                     The LLVM Compiler Infrastructure
4|*
5|* This file is distributed under the University of Illinois Open Source
6|* License. See LICENSE.TXT for details.
7|*
8\*===----------------------------------------------------------------------===*/
9
10#include "InstrProfiling.h"
11#include "InstrProfilingInternal.h"
12
13COMPILER_RT_VISIBILITY
14uint64_t __llvm_profile_get_size_for_buffer(void) {
15  const __llvm_profile_data *DataBegin = __llvm_profile_begin_data();
16  const __llvm_profile_data *DataEnd = __llvm_profile_end_data();
17  const uint64_t *CountersBegin = __llvm_profile_begin_counters();
18  const uint64_t *CountersEnd = __llvm_profile_end_counters();
19  const char *NamesBegin = __llvm_profile_begin_names();
20  const char *NamesEnd = __llvm_profile_end_names();
21
22  return __llvm_profile_get_size_for_buffer_internal(
23      DataBegin, DataEnd, CountersBegin, CountersEnd, NamesBegin, NamesEnd);
24}
25
26#define PROFILE_RANGE_SIZE(Range) (Range##End - Range##Begin)
27
28COMPILER_RT_VISIBILITY
29uint64_t __llvm_profile_get_size_for_buffer_internal(
30    const __llvm_profile_data *DataBegin, const __llvm_profile_data *DataEnd,
31    const uint64_t *CountersBegin, const uint64_t *CountersEnd,
32    const char *NamesBegin, const char *NamesEnd) {
33  /* Match logic in __llvm_profile_write_buffer(). */
34  const uint64_t NamesSize = PROFILE_RANGE_SIZE(Names) * sizeof(char);
35  const uint8_t Padding = __llvm_profile_get_num_padding_bytes(NamesSize);
36  return sizeof(__llvm_profile_header) +
37         PROFILE_RANGE_SIZE(Data) * sizeof(__llvm_profile_data) +
38         PROFILE_RANGE_SIZE(Counters) * sizeof(uint64_t) + NamesSize + Padding;
39}
40
41COMPILER_RT_VISIBILITY int __llvm_profile_write_buffer(char *Buffer) {
42  return llvmWriteProfData(llvmBufferWriter, Buffer, 0, 0);
43}
44
45COMPILER_RT_VISIBILITY int __llvm_profile_write_buffer_internal(
46    char *Buffer, const __llvm_profile_data *DataBegin,
47    const __llvm_profile_data *DataEnd, const uint64_t *CountersBegin,
48    const uint64_t *CountersEnd, const char *NamesBegin, const char *NamesEnd) {
49  return llvmWriteProfDataImpl(llvmBufferWriter, Buffer, DataBegin, DataEnd,
50                               CountersBegin, CountersEnd, 0, 0, NamesBegin,
51                               NamesEnd);
52}
53