1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
Program Example66;
{ Program to demonstrate the MMap function. }
Uses BaseUnix,Unix;
Var S : String;
fd : cint;
Len : longint;
// args : tmmapargs;
P : PChar;
begin
s:='This is the string';
Len:=Length(S);
fd:=fpOpen('testfile.txt',O_wrOnly or o_creat);
If fd=-1 then
Halt(1);
If fpWrite(fd,S[1],Len)=-1 then
Halt(2);
fpClose(fd);
fd:=fpOpen('testfile.txt',O_rdOnly);
if fd=-1 then
Halt(3);
P:=Pchar(fpmmap(nil,len+1 ,PROT_READ or PROT_WRITE,MAP_PRIVATE,fd,0));
If longint(P)=-1 then
Halt(4);
Writeln('Read in memory :',P);
fpclose(fd);
if fpMUnMap(P,Len)<>0 Then
Halt(fpgeterrno);
end.
|
