1//===-- memprof_stats.h ----------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file is a part of MemProfiler, a memory profiler.
10//
11// MemProf-private header for statistics.
12//===----------------------------------------------------------------------===//
13#ifndef MEMPROF_STATS_H
14#define MEMPROF_STATS_H
15
16#include "memprof_allocator.h"
17#include "memprof_internal.h"
18
19namespace __memprof {
20
21// MemprofStats struct is NOT thread-safe.
22// Each MemprofThread has its own MemprofStats, which are sometimes flushed
23// to the accumulated MemprofStats.
24struct MemprofStats {
25  // MemprofStats must be a struct consisting of uptr fields only.
26  // When merging two MemprofStats structs, we treat them as arrays of uptr.
27  uptr mallocs;
28  uptr malloced;
29  uptr malloced_overhead;
30  uptr frees;
31  uptr freed;
32  uptr real_frees;
33  uptr really_freed;
34  uptr reallocs;
35  uptr realloced;
36  uptr mmaps;
37  uptr mmaped;
38  uptr munmaps;
39  uptr munmaped;
40  uptr malloc_large;
41  uptr malloced_by_size[kNumberOfSizeClasses];
42
43  // Ctor for global MemprofStats (accumulated stats for dead threads).
44  explicit MemprofStats(LinkerInitialized) {}
45  // Creates empty stats.
46  MemprofStats();
47
48  void Print(); // Prints formatted stats to stderr.
49  void Clear();
50  void MergeFrom(const MemprofStats *stats);
51};
52
53// Returns stats for GetCurrentThread(), or stats for fake "unknown thread"
54// if GetCurrentThread() returns 0.
55MemprofStats &GetCurrentThreadStats();
56// Flushes a given stats into accumulated stats of dead threads.
57void FlushToDeadThreadStats(MemprofStats *stats);
58
59} // namespace __memprof
60
61#endif // MEMPROF_STATS_H
62