llvm/compiler-rt/lib/memprof/memprof_rawprofile.cpp

#include <stdint.h>
#include <stdlib.h>
#include <string.h>

#include "memprof_rawprofile.h"
#include "profile/MemProfData.inc"
#include "sanitizer_common/sanitizer_allocator_internal.h"
#include "sanitizer_common/sanitizer_array_ref.h"
#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_linux.h"
#include "sanitizer_common/sanitizer_procmaps.h"
#include "sanitizer_common/sanitizer_stackdepot.h"
#include "sanitizer_common/sanitizer_stackdepotbase.h"
#include "sanitizer_common/sanitizer_stacktrace.h"
#include "sanitizer_common/sanitizer_vector.h"

namespace __memprof {
Vector;
MemInfoBlock;
SegmentEntry;
Header;

namespace {
template <class T> char *WriteBytes(const T &Pod, char *Buffer) { … }

void RecordStackId(const uptr Key, UNUSED LockedMemInfoBlock *const &MIB,
                   void *Arg) { … }
} // namespace

u64 SegmentSizeBytes(ArrayRef<LoadedModule> Modules) { … }

// The segment section uses the following format:
// ---------- Segment Info
// Num Entries
// ---------- Segment Entry
// Start
// End
// Offset
// UuidSize
// Uuid 32B
// ----------
// ...
void SerializeSegmentsToBuffer(ArrayRef<LoadedModule> Modules,
                               const u64 ExpectedNumBytes, char *&Buffer) { … }

u64 StackSizeBytes(const Vector<u64> &StackIds) { … }

// The stack info section uses the following format:
//
// ---------- Stack Info
// Num Entries
// ---------- Stack Entry
// Num Stacks
// PC1
// PC2
// ...
// ----------
void SerializeStackToBuffer(const Vector<u64> &StackIds,
                            const u64 ExpectedNumBytes, char *&Buffer) { … }

// The MIB section has the following format:
// ---------- MIB Info
// Num Entries
// ---------- MIB Entry 0
// Alloc Count
// ...
//       ---- AccessHistogram Entry 0
//            ...
//       ---- AccessHistogram Entry AccessHistogramSize - 1
// ---------- MIB Entry 1
// Alloc Count
// ...
//       ---- AccessHistogram Entry 0
//            ...
//       ---- AccessHistogram Entry AccessHistogramSize - 1
// ----------
void SerializeMIBInfoToBuffer(MIBMapTy &MIBMap, const Vector<u64> &StackIds,
                              const u64 ExpectedNumBytes, char *&Buffer) { … }

// Format
// ---------- Header
// Magic
// Version
// Total Size
// Segment Offset
// MIB Info Offset
// Stack Offset
// ---------- Segment Info
// Num Entries
// ---------- Segment Entry
// Start
// End
// Offset
// BuildID 32B
// ----------
// ...
// ----------
// Optional Padding Bytes
// ---------- MIB Info
// Num Entries
// ---------- MIB Entry
// Alloc Count
// ...
//       ---- AccessHistogram Entry 0
//            ...
//       ---- AccessHistogram Entry AccessHistogramSize - 1
// ---------- MIB Entry 1
// Alloc Count
// ...
//       ---- AccessHistogram Entry 0
//            ...
//       ---- AccessHistogram Entry AccessHistogramSize - 1
// Optional Padding Bytes
// ---------- Stack Info
// Num Entries
// ---------- Stack Entry
// Num Stacks
// PC1
// PC2
// ...
// ----------
// Optional Padding Bytes
// ...
u64 SerializeToRawProfile(MIBMapTy &MIBMap, ArrayRef<LoadedModule> Modules,
                          char *&Buffer) { … }

} // namespace __memprof