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 
19 namespace __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.
24 struct 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.
55 MemprofStats &GetCurrentThreadStats();
56 // Flushes a given stats into accumulated stats of dead threads.
57 void FlushToDeadThreadStats(MemprofStats *stats);
58 
59 } // namespace __memprof
60 
61 #endif // MEMPROF_STATS_H
62