用PV操作解决读者写者问题的正确程序如下:begin S, Sr: Semaphore; rc: integer; S:=1; Sr:=1; rc:=0;cobegin PROCES Reader i ( i=1,2…) begin P(Sr) rc:=rc+1; if rc=1 then P(S); V(Sr); read file; P(Sr); rc:=rc-1 if rc=0 thenV(S); V(Sr); end ; PROCES Writer ...
用PV操作解决读者写者问题的正确程序如下:beginS,Sr:Semaphore;rc:integer;S:=1;Sr:=1;rc:=0;cobeginPROCESReaderi(i=1,2…)beginP(Sr)rc:=rc+1;ifrc=1thenP(S);V(Sr);readfile;P(Sr);rc:=rc-1ifrc=0thenV(S);V(Sr);end;PROCESWriterj(j=1,2…)beginP(S);Writefile;V(S)end;coend;...
a program run as part of the setup did not finish as expected A transport-level error has occurred when receiving results from the server. (provider: TCP Provider, error: 0 - The semaphore timeout period has expired. a way to save all data stored in the database in datagridview VB.NET...
a program run as part of the setup did not finish as expected A transport-level error has occurred when receiving results from the server. (provider: TCP Provider, error: 0 - The semaphore timeout period has expired. a way to save all data stored in the database in datagridview VB.NET...