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