blob: adb1a6d4f32df0fdbba50bd2ebd70aad96502a48 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
//===-- asan_thread_registry.h ----------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of AddressSanitizer, an address sanity checker.
//
// ASan-private header for asan_thread_registry.cc
//===----------------------------------------------------------------------===//
#ifndef ASAN_THREAD_REGISTRY_H
#define ASAN_THREAD_REGISTRY_H
#include "asan_stack.h"
#include "asan_stats.h"
#include "asan_thread.h"
#include "sanitizer_common/sanitizer_mutex.h"
namespace __asan {
// Stores summaries of all created threads, returns current thread,
// thread by tid, thread by stack address. There is a single instance
// of AsanThreadRegistry for the whole program.
// AsanThreadRegistry is thread-safe.
class AsanThreadRegistry {
public:
explicit AsanThreadRegistry(LinkerInitialized);
void Init();
void RegisterThread(AsanThread *thread);
void UnregisterThread(AsanThread *thread);
AsanThread *GetMain();
// Get the current thread. May return 0.
AsanThread *GetCurrent();
void SetCurrent(AsanThread *t);
u32 GetCurrentTidOrInvalid() {
if (!inited_) return 0;
AsanThread *t = GetCurrent();
return t ? t->tid() : kInvalidTid;
}
// Returns stats for GetCurrent(), or stats for
// T0 if GetCurrent() returns 0.
AsanStats &GetCurrentThreadStats();
// Flushes all thread-local stats to accumulated stats, and makes
// a copy of accumulated stats.
void GetAccumulatedStats(AsanStats *stats);
uptr GetCurrentAllocatedBytes();
uptr GetHeapSize();
uptr GetFreeBytes();
void FillMallocStatistics(AsanMallocStats *malloc_stats);
AsanThreadSummary *FindByTid(u32 tid);
AsanThread *FindThreadByStackAddress(uptr addr);
private:
void UpdateAccumulatedStatsUnlocked();
// Adds values of all counters in "stats" to accumulated stats,
// and fills "stats" with zeroes.
void FlushToAccumulatedStatsUnlocked(AsanStats *stats);
static const u32 kMaxNumberOfThreads = (1 << 22); // 4M
AsanThreadSummary *thread_summaries_[kMaxNumberOfThreads];
AsanThread main_thread_;
AsanThreadSummary main_thread_summary_;
AsanStats accumulated_stats_;
// Required for malloc_zone_statistics() on OS X. This can't be stored in
// per-thread AsanStats.
uptr max_malloced_memory_;
u32 n_threads_;
BlockingMutex mu_;
bool inited_;
};
// Returns a single instance of registry.
AsanThreadRegistry &asanThreadRegistry();
} // namespace __asan
#endif // ASAN_THREAD_REGISTRY_H
|
