Depending on the access operation type ( e. g., reading or writing an object ) and on the lock type, acquiring the lock may be blocked and postponed, if another transaction is holding a lock for that object.

Depending on the access operation type ( e. g., reading or writing an object ) and on the lock type, acquiring the lock may be blocked and postponed, if another transaction is holding a lock for that object.

Access of a transaction to a data item ( database object ) locked by another transaction may be blocked ( depending on lock type and access operation type ) until lock release.

In heavy lock contention, C2PL reduces the time locks are held on average, relative to 2PL and Strict 2PL, because transactions that hold locks are never blocked.

If the existing lock type does not allow this specific attempted concurrent access type, the transaction attempting access is blocked ( according to a predefined agreement / scheme ).

To resolve a problem where the New River works had blocked the Manifold Ditch, and boats had been forced to use the mill stream to Ware Mill, the mill was bought by the New River Company, and the associated lock became an official right of way.

) which can result in blocked lock gates, but BW workers are soon on site to clear any reported incidents.

Before the Doctor destroyed Gallifrey, however, Rassilon attempted to break Gallifrey out of the time lock that blocked the Last Great Time War from temporal manipulation, placing a drumming beat in the mind of the Master when the Master gazed into the Time Vortex through the Untempered Schism as a child ( and thus making Rassilon ultimately responsible for the Master's evil ).

Once the lock is acquired, other processes are blocked out, ensuring that corruption from simultaneous writes does not occur.

If an application downgrades an exclusive lock to a shared lock while another application is blocked waiting for an exclusive lock, the latter application will get the exclusive lock and lock the first application out.

When a portion of index is locked by a transaction, other transactions may be blocked from accessing this index portion ( blocked from modifying, and even from reading it, depending on lock type and needed operation ).

Further, Glide took the lock of the screen memory, and thus the X server was blocked from doing any other GUI tasks.

The oldest known lock is approximately 4, 000 years old and was of Egyptian make.

The parental lock or content filters allow users over 18 years old to block access to channels that are not appropriate for children, using a personal identification number.

The singer, " Randy ", wore an old man mask, and the other two, keyboardist " Chuck " and guitarist " Bob ", wore dread lock wigs and some kind of illuminated optical gear over their faces.

Shen's book is also the first to describe the drydock in China, and discusses the advantages of the relatively recent invention of the canal pound lock over the old flash lock.

In the twilight of the summer evenings we were wont to sit at the front of the old home and hear the pleasant and oft recurring sound of the boatman ’ s horn miles away, wafted across the river and giving signal to the keeper of the outlet lock West Nanticoke to make ready for the passage of boats in and out of the canal.

Some of the old locks are still visible and several lock houses are now privately owned.

A new cut between broad cut and the figure of eight locks, which included two large locks, and a new large lock beside the old one at Thorne were opened in 1838, but little more was done, despite the Rochdale Canal pressing for longer locks.

After the remains of Deeping High lock and Deeping Low lock, there is a junction where the old course, the Maxey Cut, the South Drain and the Folly River, also a drain, meet.

Half a mile upstream of the city centre is Woodston Wharf — the site of the old sea lock — originally the extent of the tidal River Nene until the Dog in a Doublet lock at Whittlesey was opened in 1937.

They managed to escape because the lock was old & rusty.

The inhabitants of the Campine region have common soubriquets that are particular to their towns ; people from Herentals are referred to by the colloquialisms " Klokkenververs " ( meaning " bell painters ") and " Peestekers " ( Which comes from the old story about the farmers of the town using carrots ( pekes, " pee "- stekers is a lock on the " zandpoort " ( one of the great gates in that time )

The arms show an old black-colored lock on a gold / yellow background.

Much of the old and somewhat tidal River Ancholme was canalised and lock gates were constructed at South Ferriby, its confluence with the Humber.

In the 1830s and 1840s, many old Charleville muskets ( mostly later models ) were converted from flintlock to percussion lock.

The inclined plane had a journey time of 12 minutes for two boats up and two down, compared with 1¼ hours through the old lock system, thereby improving the speed of passage up the hill tremendously.

Concurrent RCU readers can then continue accessing the old versions, and can dispense with the atomic operations, memory barriers, and cache misses that are so expensive on modern SMP computer systems, even in absence of lock contention.

During low water, there are rapids at the confluence, caused by an old canal lock that was abandoned after flooding.

Image: Maumee & Ohio canal ( lock to dry bed ). JPG | Providence lock looking west into the old canal bed.

Recently, several sections have been cleared, and it is now possible to walk from O ' Briens Bridge to Errina lock along the old tow path.

The old lock was then filled in, but one of the winches was saved, and was put on display at Hampstead Lock.

This allows the receiver to lock onto the start of each frame and match up each channel in turn.

Upon the introduction of the Subaru Legacy in 1989, Subaru networked the four channel anti-lock brake function with the all wheel drive system so that if the car detected any wheel beginning to lock up, the variable assist all wheel drive system installed on vehicles with the automatic transmission would engage to ensure all wheels were actively gripping while the anti-lock system was attempting to stop the car.

A more expensive scheme, involving the construction of a new cut to link the River Yare to the River Waveney, together with a channel between Oulton Broad and Lake Lothing, where a sea lock was needed, was also opposed by Yarmouth, but formed the basis of a Bill to Parliament.

The scheme involved dredging of the River Yare from Norwich to Reedham, to make it deeper, construction of the Haddiscoe cut between Reedham and Haddiscoe on the River Waveney, enlarging of Oulton Dyke, between the Waveney and Oulton Broad, and linking of Oulton Broad to Lake Lothing by a channel which was long, and included a sea lock, so that it could be used at all states of the tide.

The lock was, and included a system of sluices, which used water from Oulton Broad to clear a channel to the sea through Lake Lothing.

Passing through Spalding, where most of the flow is diverted through the Coronation flood relief channel, the town is protected by Marsh Road sluice and a sea lock to the east.

Fulney lock was constructed at the same time to exclude the tide from the upper river, as was the Maxey Cut, an embanked channel that bypasses the villages of Market Deeping, Deeping Gate and Deeping St James.

The re-routing was devised by E. G. Taverner, the chief engineer for the Welland and Deepings Drainage Board, towards the end of the Second World War, and was part of a much larger project which involved the digging of the Coronation Channel, a flood relief channel to divert the Welland around the south-eastern edge of Spalding, and the construction of Fulney lock, to exclude tidal water from the upper Welland.

If the camera is tethered with a triax cable, the analog generator locking signal is used to lock the camera control unit which in turn locks the camera head by means of information carried within a data channel transmitted along the cable.

Just over south of Napton it sank a well that fed the summit pound via a feeder arm westwards to the canal between locks 11 and 12 and then a channel beside the canal from there to just above Marston Doles lock.

A branch leaves the main channel, passes under the A156 bridge, and immediately enters Torksey lock, which is the only lock on the canal.

Through the building of several locks and dams, and upstream reservoirs like Lake Hartwell, also, the Savannah River was once navigable by freight barges between Augusta, Georgia ( on the Fall Line ) and the Atlantic Ocean ; maintenance of this channel for commercial shipping ended in 1979, and the one lock below Augusta has been deactivated.

The mill was situated on an island in the middle of the river, with a weir and bypass channel to the north and the lock channel to the south.

The channel acts as a fixed lock to gradually step down the water level ; to head upstream, fish must jump over from box to box in the ladder.

North of the Sabin Lock is an additional channel with a small hydroelectric plant that provides electricity for the lock complex.

As there is no lock at Parteen weir linking the natural channel to Lough Derg, it is no longer possible for any watercraft to enter, by water, this part of the Shannon.

The Lee Navigation continues south in an artificial channel known as ' Hackney Cut ', to the next lock at Old Ford Lock ( about 1. 7 miles ), where the natural channel rejoins the Navigation, after its meander towards Leyton.

Pilework jetties are also constructed in the water outside the entrances to docks on each side, so as to form an enlarging trumpet-shaped channel between the entrance, lock or tidal basin and the approach channel, in order to guide vessels in entering or leaving the docks.

General anaesthetic changes membrane lateral pressure profile which determines conformation of membrane ion channel ( green lock )

When descending boat enters each lock chanber, the water level rises slightly and the excess overflows via a channel at the side of each lock which runs into the main overflow.