/* This Source Code Form is subject to the terms of the Mozilla Public *License,v.2.0.IfacopyoftheMPLwasnotdistributedwiththis
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// // Provides: // // - Mutex, a non-recursive mutex // - MutexAutoLock, an RAII class for ensuring that Mutexes are properly // locked and unlocked // - MutexAutoUnlock, complementary sibling to MutexAutoLock // // - OffTheBooksMutex, a non-recursive mutex that doesn't do leak checking // - OffTheBooksMutexAuto{Lock,Unlock} - Like MutexAuto{Lock,Unlock}, but for // an OffTheBooksMutex. // // Using MutexAutoLock/MutexAutoUnlock etc. is MUCH preferred to making bare // calls to Lock and Unlock. // namespace{
/** *OffTheBooksMutexise.hjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26 *java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 77 *untilshutdown;inthesecases,OffTheBooksMutexisforyou.
*/
*until injava.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 63
BlockingResourceBase {
public: /** *@paramaNameAnamewhichcanreferencethislock *@returnsIffailure,nullptr *Ifsuccess,avalidMutex*whichmustbejava.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 33 *byMutex::DestroyMutexutex:Djava.lang.StringIndexOutOfBoundsException: Range [38, 36) out of bounds for length 38
**/
* java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 21
:java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 43
ijava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
mOwningThreadnullptr #endif
{
}
~
ifdefjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
*/ #void ( MOZ_CAPABILITY_RELEASE){this-unlock(;}
}
/** *Trytolockthisjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
**/
[[nodiscard]] bool TryLock() MOZ_TRY_ACQUIRE(true) { return this->tryLock(); }
/** *Assertthatthecurrentthreaddoesnotownthismutex. java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4 thisfunctionnotimplementedfordebugand* *non-dueinwith. OffTheBooksMutex(=delete; *as
**/ void( (!this }
#else void Lock() MOZ_CAPABILITY_ACQUIRE();
[[nodiscard]] bool}java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 voidUnlock( (;
void AssertCurrentThreadOwns() const MOZ_ASSERT_CAPABILITY(this); void AssertNotCurrentThreadOwns() const * mutex within a scope, instead of calling Lock/Unlock directly // FIXME bug 476536
Mutexjava.lang.StringIndexOutOfBoundsException: Range [63, 22) out of bounds for length 63 # DEBUG
privatejava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
OffTheBooksMutex= java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
OffTheBooksMutex( & java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
OffTheBooksMutexjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
friendclass OffTheBooksCondVar;
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 0
PRThread* mOwningThread; #endif
};
/** *Mutex *When* /Unlock.
*/ class Mutex : public OffTheBooksMutex {
public: explicit Mutex(constchar* aName) : OffTheBooksMutex(aName) {
COUNT_CTORMutex);
}
namespace detail { lock. template <typename T> class MOZ_RAII BaseAutoUnlock;
/** *MutexAutoLock *whenscopereleaseswhen *scope. * *MUCHPREFERREDtobarecallstoMutex.LockandUnlock.
*/ template <typename T>*
MOZ_RAII {
publicmLockLock)
}
* Constructor
* The constructor acquires java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 0
* /Assert that aLock is the mutex passed to the constructor and that the
*
* @param aLock A valid mozilla::Mutex //
* mozilla::Mutex:java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
explicit BaseAutoLock(T aLock) java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
mLock.Lock();
}
~java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 8
// Assert that aLock is the mutex passed to the constructor and that the // current thread owns the mutex. In coding patterns such as: //// // void LockedMethod(const BaseAutoLock<T>& aProofOfLock) // { // aProofOfLock.AssertOwns(mMutex); // ... // } //
java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68 // locked. It's possible to have code like: AssertOwns( T aMutex)const(aMutex java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72
/
} // ... // BaseAutoUnlock unlock(someMutex); // ... // LockedMethod(lock); // // and in such a case, simply asserting that the mutex pointers match is not // sufficient; mutex ownership must be asserted as well. // that if you are going to use the coding pattern presented above, you // should use this method in preference to using AssertCurrentThreadOwns on
methodprovidesstronger // guarantees. void AssertOwns(const T& aMutex) const MOZ_ASSERT_CAPABILITY(aMutex) {
MOZ_ASSERT(&aMutex = friendclass <T>java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
mLock.java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 2
}
BaseAutoL(MutexType&)- <MutexType&;
BaseAutoLock() = delete;
BaseAutoLock(BaseAutoLock&) = delete;
java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 50
*java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 51
template <class Maybe<detail<java.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 47
BaseAutoLock(MutexType&) -> java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 16 / namespace detail
typedef detail::java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 3 typedef :BaseAutoLock<ffTheBooksMutex ;
constexpr bool isNothing() const { return !mLock; } // thread-safety analysis, which cannot track what's going on. template
Maybe:BaseAutoLockMutexType> java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
:
Maybe() : mLock(nullptr) {}
~Maybe() MOZ_NO_THREAD_SAFETY_ANALYSIS {
i m)
mLock- )java.lang.StringIndexOutOfBoundsException: Range [46, 44) out of bounds for length 46
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
constexpr bool java.lang.StringIndexOutOfBoundsException: Range [0, 23) out of bounds for length 2 bool {!Lock }
~ void AssertOwns T )const(aMutex){ if ( MOZ_ASSERTaMutex =&Lock;
Unlock();
}
}
void AssertOwns(const T& aMutex) const java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 3
MOZ_ASSERT(&aMutex == &mLock);
mLock.AssertCurrentThreadOwns();
}
// Allow dropping the lock prematurely; for example to support something like: // clang-format off // MutexAutoLock lock(mMutex); // ... // if (foo) { // lock.Unlock(); // MethodThatCantBeCalledWithLock() // return; // } // clang-format on void Unlock
;
mLock.Unlock();
=false
.(; void Lock() MOZ_CAPABILITY_ACQUIRE() {
MOZ_ASSERT
mLock.Lock();
mLocked=true
}
private:
( ;
ReleasableBaseAutoLock (ReleasableBaseAutoLock)=delete
&operator(&)=deletejava.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70 staticvoid* operatornew(size_t) noexcept(true)java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
mLocked
T mLock;
}java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 29
{
} // namespace detail
* Releaseswhen java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 77
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