Description: 3, the banker s algorithm
Set request: the request is the process of vector Pi, Pi made when the resource request, the system according to the following steps to check:
(1) If Request [i] <= Need [i], then go to step (2)
(2) If Request [i] <= Available, then go to step (3)
(3) system tentatively assigned to the resources required to process Pi, and modify the value of the following data structure:
Available = Available-Request [i]
Allocation [i] = Allocation [i]+ Request [i]
Need [i] = Need [i]- Request [i]
(4) system to perform security algorithms, checks the resource allocation, the system is in safe state if the security, formally allocate resources to Pi process, the completion of this assignment Otherwise, the tentative allocation set aside to restore the original resource distribution of state, Pi process enters a wait state.
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osBank
......\Debug
......\.....\osBank.exe
......\.....\osBank.ilk
......\.....\osBank.obj
......\.....\osBank.pch
......\.....\osBank.pdb
......\.....\vc60.idb
......\.....\vc60.pdb
......\osBank.cpp
......\osBank.dsp
......\osBank.dsw
......\osBank.ncb
......\osBank.opt
......\osBank.plg
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