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//===-- scudo_tls_context_android.inc ---------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// Android specific base thread context definition.
///
//===----------------------------------------------------------------------===//
#ifndef SCUDO_TLS_CONTEXT_ANDROID_INC_
#define SCUDO_TLS_CONTEXT_ANDROID_INC_
#ifndef SCUDO_TLS_H_
# error "This file must be included inside scudo_tls.h."
#endif // SCUDO_TLS_H_
#if SANITIZER_LINUX && SANITIZER_ANDROID
struct ScudoTSDPlatform {
INLINE bool tryLock() {
if (Mutex.TryLock()) {
atomic_store_relaxed(&Precedence, 0);
return true;
}
if (atomic_load_relaxed(&Precedence) == 0)
atomic_store_relaxed(&Precedence, NanoTime());
return false;
}
INLINE void lock() {
Mutex.Lock();
atomic_store_relaxed(&Precedence, 0);
}
INLINE void unlock() {
Mutex.Unlock();
}
INLINE u64 getPrecedence() {
return atomic_load_relaxed(&Precedence);
}
private:
StaticSpinMutex Mutex;
atomic_uint64_t Precedence;
};
#endif // SANITIZER_LINUX && SANITIZER_ANDROID
#endif // SCUDO_TLS_CONTEXT_ANDROID_INC_
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