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
13 COMPILER_RT_VISIBILITY
__llvm_profile_get_size_for_buffer(void)14 uint64_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 COMPILER_RT_VISIBILITY
__llvm_profile_get_data_size(const __llvm_profile_data * Begin,const __llvm_profile_data * End)27 uint64_t __llvm_profile_get_data_size(const __llvm_profile_data *Begin,
28 const __llvm_profile_data *End) {
29 intptr_t BeginI = (intptr_t)Begin, EndI = (intptr_t)End;
30 return ((EndI + sizeof(__llvm_profile_data) - 1) - BeginI) /
31 sizeof(__llvm_profile_data);
32 }
33
34 COMPILER_RT_VISIBILITY
__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)35 uint64_t __llvm_profile_get_size_for_buffer_internal(
36 const __llvm_profile_data *DataBegin, const __llvm_profile_data *DataEnd,
37 const uint64_t *CountersBegin, const uint64_t *CountersEnd,
38 const char *NamesBegin, const char *NamesEnd) {
39 /* Match logic in __llvm_profile_write_buffer(). */
40 const uint64_t NamesSize = (NamesEnd - NamesBegin) * sizeof(char);
41 const uint8_t Padding = __llvm_profile_get_num_padding_bytes(NamesSize);
42 return sizeof(__llvm_profile_header) +
43 (__llvm_profile_get_data_size(DataBegin, DataEnd) *
44 sizeof(__llvm_profile_data)) +
45 (CountersEnd - CountersBegin) * sizeof(uint64_t) + NamesSize + Padding;
46 }
47
__llvm_profile_write_buffer(char * Buffer)48 COMPILER_RT_VISIBILITY int __llvm_profile_write_buffer(char *Buffer) {
49 return lprofWriteData(lprofBufferWriter, Buffer, 0);
50 }
51
__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)52 COMPILER_RT_VISIBILITY int __llvm_profile_write_buffer_internal(
53 char *Buffer, const __llvm_profile_data *DataBegin,
54 const __llvm_profile_data *DataEnd, const uint64_t *CountersBegin,
55 const uint64_t *CountersEnd, const char *NamesBegin, const char *NamesEnd) {
56 return lprofWriteDataImpl(lprofBufferWriter, Buffer, DataBegin, DataEnd,
57 CountersBegin, CountersEnd, 0, NamesBegin,
58 NamesEnd);
59 }
60