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 #define PROFILE_RANGE_SIZE(Range) (Range##End - Range##Begin)
27
28 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)29 uint64_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
__llvm_profile_write_buffer(char * Buffer)41 COMPILER_RT_VISIBILITY int __llvm_profile_write_buffer(char *Buffer) {
42 return llvmWriteProfData(llvmBufferWriter, Buffer, 0, 0);
43 }
44
__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)45 COMPILER_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