]>
git.proxmox.com Git - rustc.git/blob - src/compiler-rt/lib/profile/InstrProfilingBuffer.c
1 /*===- InstrProfilingBuffer.c - Write instrumentation to a memory buffer --===*\
3 |* The LLVM Compiler Infrastructure
5 |* This file is distributed under the University of Illinois Open Source
6 |* License. See LICENSE.TXT for details.
8 \*===----------------------------------------------------------------------===*/
10 #include "InstrProfiling.h"
11 #include "InstrProfilingInternal.h"
13 COMPILER_RT_VISIBILITY
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();
22 return __llvm_profile_get_size_for_buffer_internal(
23 DataBegin
, DataEnd
, CountersBegin
, CountersEnd
, NamesBegin
, NamesEnd
);
26 COMPILER_RT_VISIBILITY
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
);
34 COMPILER_RT_VISIBILITY
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
;
48 COMPILER_RT_VISIBILITY
int __llvm_profile_write_buffer(char *Buffer
) {
49 return lprofWriteData(lprofBufferWriter
, Buffer
, 0);
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
,