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QReadWriteLock: inline the lockForXxx functions

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We can now do that because tryLockForXxxx(-1) is fast for the
uncontended case too.

Change-Id: I3d728c4197df49169066fffd1756ddd06caf7b52
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
This commit is contained in:
Thiago Macieira 2023-04-17 16:49:58 -07:00
parent 34914099a1
commit fcae43237b
3 changed files with 20 additions and 8 deletions
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4
src/corelib/compat/removed_api.cpp
View File

@ -601,6 +601,10 @@ QStringView QXmlStreamAttributes::value(QLatin1StringView qualifiedName) const
return value(QAnyStringView(qualifiedName));
}
// inlined API
#if QT_CONFIG(thread)
#include "qreadwritelock.h"
#endif
// #include "qotherheader.h"
// // implement removed functions from qotherheader.h

10
src/corelib/thread/qreadwritelock.cpp
View File

@ -132,6 +132,7 @@ QReadWriteLock::~QReadWriteLock()
}
/*!
\fn QReadWriteLock::lockForRead()
Locks the lock for reading. This function will block the current
thread if another thread has locked for writing.
@ -140,10 +141,6 @@ QReadWriteLock::~QReadWriteLock()
\sa unlock(), lockForWrite(), tryLockForRead()
*/
void QReadWriteLock::lockForRead()
{
tryLockForRead(-1);
}
/*!
@ -229,6 +226,7 @@ Q_NEVER_INLINE static bool contendedTryLockForRead(QAtomicPointer<QReadWriteLock
}
/*!
\fn QReadWriteLock::lockForWrite()
Locks the lock for writing. This function will block the current
thread if another thread (including the current) has locked for
reading or writing (unless the lock has been created using the
@ -239,10 +237,6 @@ Q_NEVER_INLINE static bool contendedTryLockForRead(QAtomicPointer<QReadWriteLock
\sa unlock(), lockForRead(), tryLockForWrite()
*/
void QReadWriteLock::lockForWrite()
{
tryLockForWrite(-1);
}
/*!
Attempts to lock for writing. This function returns \c true if the

14
src/corelib/thread/qreadwritelock.h
View File

@ -21,12 +21,14 @@ public:
explicit QReadWriteLock(RecursionMode recursionMode = NonRecursive);
~QReadWriteLock();
QT_CORE_INLINE_SINCE(6, 6)
void lockForRead();
#if QT_CORE_REMOVED_SINCE(6, 6)
bool tryLockForRead();
#endif
bool tryLockForRead(int timeout = 0);
QT_CORE_INLINE_SINCE(6, 6)
void lockForWrite();
#if QT_CORE_REMOVED_SINCE(6, 6)
bool tryLockForWrite();
@ -41,6 +43,18 @@ private:
friend class QReadWriteLockPrivate;
};
#if QT_CORE_INLINE_IMPL_SINCE(6, 6)
void QReadWriteLock::lockForRead()
{
tryLockForRead(-1);
}
void QReadWriteLock::lockForWrite()
{
tryLockForWrite(-1);
}
#endif // inline since 6.6
#if defined(Q_CC_MSVC)
#pragma warning( push )
#pragma warning( disable : 4312 ) // ignoring the warning from /Wp64