84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
//===-- asan_thread_registry.h ----------------------------------*- C++ -*-===//
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of AddressSanitizer, an address sanity checker.
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//
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// ASan-private header for asan_thread_registry.cc
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//===----------------------------------------------------------------------===//
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#ifndef ASAN_THREAD_REGISTRY_H
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#define ASAN_THREAD_REGISTRY_H
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#include "asan_lock.h"
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#include "asan_stack.h"
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#include "asan_stats.h"
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#include "asan_thread.h"
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namespace __asan {
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// Stores summaries of all created threads, returns current thread,
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// thread by tid, thread by stack address. There is a single instance
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// of AsanThreadRegistry for the whole program.
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// AsanThreadRegistry is thread-safe.
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class AsanThreadRegistry {
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public:
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explicit AsanThreadRegistry(LinkerInitialized);
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void Init();
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void RegisterThread(AsanThread *thread);
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void UnregisterThread(AsanThread *thread);
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AsanThread *GetMain();
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// Get the current thread. May return 0.
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AsanThread *GetCurrent();
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void SetCurrent(AsanThread *t);
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u32 GetCurrentTidOrInvalid() {
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if (!inited_) return 0;
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AsanThread *t = GetCurrent();
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return t ? t->tid() : kInvalidTid;
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}
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// Returns stats for GetCurrent(), or stats for
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// T0 if GetCurrent() returns 0.
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AsanStats &GetCurrentThreadStats();
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// Flushes all thread-local stats to accumulated stats, and makes
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// a copy of accumulated stats.
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void GetAccumulatedStats(AsanStats *stats);
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uptr GetCurrentAllocatedBytes();
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uptr GetHeapSize();
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uptr GetFreeBytes();
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void FillMallocStatistics(AsanMallocStats *malloc_stats);
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AsanThreadSummary *FindByTid(u32 tid);
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AsanThread *FindThreadByStackAddress(uptr addr);
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private:
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void UpdateAccumulatedStatsUnlocked();
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// Adds values of all counters in "stats" to accumulated stats,
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// and fills "stats" with zeroes.
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void FlushToAccumulatedStatsUnlocked(AsanStats *stats);
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static const u32 kMaxNumberOfThreads = (1 << 22); // 4M
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AsanThreadSummary *thread_summaries_[kMaxNumberOfThreads];
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AsanThread main_thread_;
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AsanThreadSummary main_thread_summary_;
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AsanStats accumulated_stats_;
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// Required for malloc_zone_statistics() on OS X. This can't be stored in
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// per-thread AsanStats.
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uptr max_malloced_memory_;
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u32 n_threads_;
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AsanLock mu_;
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bool inited_;
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};
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// Returns a single instance of registry.
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AsanThreadRegistry &asanThreadRegistry();
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} // namespace __asan
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#endif // ASAN_THREAD_REGISTRY_H
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