河东过桥者进程 wait( mutex number: number +1 if number=I then wait( bridge signal( mutex 过桥 wait( mutex) number number -1 if number =0 then signal( bridge Signal al( mutex)河东过桥者进程 wait ( mutex1 ) ; enumber := enumber + 1; if enumber = 1 then wait ( bridge ) ; signal ( mutex1 ) ; 过桥 wait ( mutex1 ) ; enumber = enumber – 1 ; if enumber = 0 then signal ( bridge ) ; signal ( mutex1 ) ;