forked from OSchip/llvm-project
190 lines
7.2 KiB
C
190 lines
7.2 KiB
C
/*===- InstrProfiling.h- Support library for PGO instrumentation ----------===*\
|
|
|*
|
|
|* The LLVM Compiler Infrastructure
|
|
|*
|
|
|* This file is distributed under the University of Illinois Open Source
|
|
|* License. See LICENSE.TXT for details.
|
|
|*
|
|
\*===----------------------------------------------------------------------===*/
|
|
|
|
#ifndef PROFILE_INSTRPROFILING_INTERNALH_
|
|
#define PROFILE_INSTRPROFILING_INTERNALH_
|
|
|
|
#include "InstrProfiling.h"
|
|
#include "stddef.h"
|
|
|
|
/*!
|
|
* \brief Write instrumentation data to the given buffer, given explicit
|
|
* pointers to the live data in memory. This function is probably not what you
|
|
* want. Use __llvm_profile_get_size_for_buffer instead. Use this function if
|
|
* your program has a custom memory layout.
|
|
*/
|
|
uint64_t __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);
|
|
|
|
/*!
|
|
* \brief Write instrumentation data to the given buffer, given explicit
|
|
* pointers to the live data in memory. This function is probably not what you
|
|
* want. Use __llvm_profile_write_buffer instead. Use this function if your
|
|
* program has a custom memory layout.
|
|
*
|
|
* \pre \c Buffer is the start of a buffer at least as big as \a
|
|
* __llvm_profile_get_size_for_buffer_internal().
|
|
*/
|
|
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);
|
|
|
|
/*!
|
|
* The data structure describing the data to be written by the
|
|
* low level writer callback function.
|
|
*/
|
|
typedef struct ProfDataIOVec {
|
|
const void *Data;
|
|
size_t ElmSize;
|
|
size_t NumElm;
|
|
} ProfDataIOVec;
|
|
|
|
struct ProfDataWriter;
|
|
typedef uint32_t (*WriterCallback)(struct ProfDataWriter *This, ProfDataIOVec *,
|
|
uint32_t NumIOVecs);
|
|
|
|
typedef struct ProfDataWriter {
|
|
WriterCallback Write;
|
|
void *WriterCtx;
|
|
} ProfDataWriter;
|
|
|
|
/*!
|
|
* The data structure for buffered IO of profile data.
|
|
*/
|
|
typedef struct ProfBufferIO {
|
|
ProfDataWriter *FileWriter;
|
|
uint32_t OwnFileWriter;
|
|
/* The start of the buffer. */
|
|
uint8_t *BufferStart;
|
|
/* Total size of the buffer. */
|
|
uint32_t BufferSz;
|
|
/* Current byte offset from the start of the buffer. */
|
|
uint32_t CurOffset;
|
|
} ProfBufferIO;
|
|
|
|
/* The creator interface used by testing. */
|
|
ProfBufferIO *lprofCreateBufferIOInternal(void *File, uint32_t BufferSz);
|
|
|
|
/*!
|
|
* This is the interface to create a handle for buffered IO.
|
|
*/
|
|
ProfBufferIO *lprofCreateBufferIO(ProfDataWriter *FileWriter);
|
|
|
|
/*!
|
|
* The interface to destroy the bufferIO handle and reclaim
|
|
* the memory.
|
|
*/
|
|
void lprofDeleteBufferIO(ProfBufferIO *BufferIO);
|
|
|
|
/*!
|
|
* This is the interface to write \c Data of \c Size bytes through
|
|
* \c BufferIO. Returns 0 if successful, otherwise return -1.
|
|
*/
|
|
int lprofBufferIOWrite(ProfBufferIO *BufferIO, const uint8_t *Data,
|
|
uint32_t Size);
|
|
/*!
|
|
* The interface to flush the remaining data in the buffer.
|
|
* through the low level writer callback.
|
|
*/
|
|
int lprofBufferIOFlush(ProfBufferIO *BufferIO);
|
|
|
|
/* The low level interface to write data into a buffer. It is used as the
|
|
* callback by other high level writer methods such as buffered IO writer
|
|
* and profile data writer. */
|
|
uint32_t lprofBufferWriter(ProfDataWriter *This, ProfDataIOVec *IOVecs,
|
|
uint32_t NumIOVecs);
|
|
void initBufferWriter(ProfDataWriter *BufferWriter, char *Buffer);
|
|
|
|
struct ValueProfData;
|
|
struct ValueProfRecord;
|
|
struct InstrProfValueData;
|
|
struct ValueProfNode;
|
|
|
|
/*!
|
|
* The class that defines a set of methods to read value profile
|
|
* data for streaming/serialization from the instrumentation runtime.
|
|
*/
|
|
typedef struct VPDataReaderType {
|
|
uint32_t (*InitRTRecord)(const __llvm_profile_data *Data,
|
|
uint8_t *SiteCountArray[]);
|
|
/* Function pointer to getValueProfRecordHeader method. */
|
|
uint32_t (*GetValueProfRecordHeaderSize)(uint32_t NumSites);
|
|
/* Function pointer to getFristValueProfRecord method. */
|
|
struct ValueProfRecord *(*GetFirstValueProfRecord)(struct ValueProfData *);
|
|
/* Return the number of value data for site \p Site. */
|
|
uint32_t (*GetNumValueDataForSite)(uint32_t VK, uint32_t Site);
|
|
/* Return the total size of the value profile data of the
|
|
* current function. */
|
|
uint32_t (*GetValueProfDataSize)(void);
|
|
/*!
|
|
* Read the next \p N value data for site \p Site and store the data
|
|
* in \p Dst. \p StartNode is the first value node to start with if
|
|
* it is not null. The function returns the pointer to the value
|
|
* node pointer to be used as the \p StartNode of the next batch reading.
|
|
* If there is nothing left, it returns NULL.
|
|
*/
|
|
struct ValueProfNode *(*GetValueData)(uint32_t ValueKind, uint32_t Site,
|
|
struct InstrProfValueData *Dst,
|
|
struct ValueProfNode *StartNode,
|
|
uint32_t N);
|
|
} VPDataReaderType;
|
|
|
|
/* Write profile data to destinitation. If SkipNameDataWrite is set to 1,
|
|
the name data is already in destintation, we just skip over it. */
|
|
int lprofWriteData(ProfDataWriter *Writer, VPDataReaderType *VPDataReader,
|
|
int SkipNameDataWrite);
|
|
int lprofWriteDataImpl(ProfDataWriter *Writer,
|
|
const __llvm_profile_data *DataBegin,
|
|
const __llvm_profile_data *DataEnd,
|
|
const uint64_t *CountersBegin,
|
|
const uint64_t *CountersEnd,
|
|
VPDataReaderType *VPDataReader, const char *NamesBegin,
|
|
const char *NamesEnd, int SkipNameDataWrite);
|
|
|
|
/* Merge value profile data pointed to by SrcValueProfData into
|
|
* in-memory profile counters pointed by to DstData. */
|
|
void lprofMergeValueProfData(struct ValueProfData *SrcValueProfData,
|
|
__llvm_profile_data *DstData);
|
|
|
|
VPDataReaderType *lprofGetVPDataReader();
|
|
|
|
/* Internal interface used by test to reset the max number of
|
|
* tracked values per value site to be \p MaxVals.
|
|
*/
|
|
void lprofSetMaxValsPerSite(uint32_t MaxVals);
|
|
void lprofSetupValueProfiler();
|
|
|
|
/* Return the profile header 'signature' value associated with the current
|
|
* executable or shared library. The signature value can be used to for
|
|
* a profile name that is unique to this load module so that it does not
|
|
* collide with profiles from other binaries. It also allows shared libraries
|
|
* to dump merged profile data into its own profile file. */
|
|
uint64_t lprofGetLoadModuleSignature();
|
|
|
|
/*
|
|
* Return non zero value if the profile data has already been
|
|
* dumped to the file.
|
|
*/
|
|
unsigned lprofProfileDumped();
|
|
void lprofSetProfileDumped();
|
|
|
|
COMPILER_RT_VISIBILITY extern void (*FreeHook)(void *);
|
|
COMPILER_RT_VISIBILITY extern uint8_t *DynamicBufferIOBuffer;
|
|
COMPILER_RT_VISIBILITY extern uint32_t VPBufferSize;
|
|
COMPILER_RT_VISIBILITY extern uint32_t VPMaxNumValsPerSite;
|
|
/* Pointer to the start of static value counters to be allocted. */
|
|
COMPILER_RT_VISIBILITY extern ValueProfNode *CurrentVNode;
|
|
COMPILER_RT_VISIBILITY extern ValueProfNode *EndVNode;
|
|
extern void (*VPMergeHook)(struct ValueProfData *, __llvm_profile_data *);
|
|
|
|
#endif
|