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[PGO] Move buffer write callback to a common file 

This is a NFC refactoring enabling code sharing by file writer.

llvm-svn: 256264
This commit is contained in:
Xinliang David Li 2015-12-22 18:57:15 +00:00
parent e93b8e1539
commit baf55d8266
3 changed files with 21 additions and 19 deletions
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21
compiler-rt/lib/profile/InstrProfilingBuffer.c
View File

@ -10,8 +10,6 @@
#include "InstrProfiling.h"
#include "InstrProfilingInternal.h"
#include <string.h>
COMPILER_RT_VISIBILITY
uint64_t __llvm_profile_get_size_for_buffer(void) {
const __llvm_profile_data *DataBegin = __llvm_profile_begin_data();
@ -40,30 +38,15 @@ uint64_t __llvm_profile_get_size_for_buffer_internal(
PROFILE_RANGE_SIZE(Counters) * sizeof(uint64_t) + NamesSize + Padding;
}
/* The buffer writer is reponsponsible in keeping writer state
* across the call.
*/
static uint32_t bufferWriter(ProfDataIOVec *IOVecs, uint32_t NumIOVecs,
void **WriterCtx) {
uint32_t I;
char **Buffer = (char **)WriterCtx;
for (I = 0; I < NumIOVecs; I++) {
size_t Length = IOVecs[I].ElmSize * IOVecs[I].NumElm;
memcpy(*Buffer, IOVecs[I].Data, Length);
*Buffer += Length;
}
return 0;
}
COMPILER_RT_VISIBILITY int __llvm_profile_write_buffer(char *Buffer) {
return llvmWriteProfData(bufferWriter, Buffer, 0, 0);
return llvmWriteProfData(llvmBufferWriter, Buffer, 0, 0);
}
COMPILER_RT_VISIBILITY int __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) {
return llvmWriteProfDataImpl(bufferWriter, Buffer, DataBegin, DataEnd,
return llvmWriteProfDataImpl(llvmBufferWriter, Buffer, DataBegin, DataEnd,
CountersBegin, CountersEnd, 0, 0, NamesBegin,
NamesEnd);
}

2
compiler-rt/lib/profile/InstrProfilingInternal.h
View File

@ -49,6 +49,8 @@ typedef struct ProfDataIOVec {
typedef uint32_t (*WriterCallback)(ProfDataIOVec *, uint32_t NumIOVecs,
void **WriterCtx);
uint32_t llvmBufferWriter(ProfDataIOVec *IOVecs, uint32_t NumIOVecs,
void **WriterCtx);
int llvmWriteProfData(WriterCallback Writer, void *WriterCtx,
const uint8_t *ValueDataBegin,
const uint64_t ValueDataSize);

17
compiler-rt/lib/profile/InstrProfilingWriter.c
View File

@ -9,6 +9,23 @@
#include "InstrProfiling.h"
#include "InstrProfilingInternal.h"
#include <string.h>
/* The buffer writer is reponsponsible in keeping writer state
* across the call.
*/
COMPILER_RT_VISIBILITY uint32_t llvmBufferWriter(ProfDataIOVec *IOVecs,
uint32_t NumIOVecs,
void **WriterCtx) {
uint32_t I;
char **Buffer = (char **)WriterCtx;
for (I = 0; I < NumIOVecs; I++) {
size_t Length = IOVecs[I].ElmSize * IOVecs[I].NumElm;
memcpy(*Buffer, IOVecs[I].Data, Length);
*Buffer += Length;
}
return 0;
}
COMPILER_RT_VISIBILITY int llvmWriteProfData(WriterCallback Writer,
void *WriterCtx,