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+ Added example 66

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michael 2000-05-25 20:08:10 +00:00
parent a63c76249a
commit 0cc02b454e
3 changed files with 40 additions and 3 deletions
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3
docs/linuxex/Makefile
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@ -36,8 +36,7 @@ OBJECTS=ex1 ex2 ex3 ex4 ex5 ex6 ex7 ex8 ex9 ex10 ex11 ex12 ex13 ex14 \
ex15 ex16 ex17 ex18 ex19 ex20 ex21 ex22 ex23 ex24 ex25 ex26 ex27 \
ex28 ex29 ex30 ex31 ex32 ex33 ex34 ex35 ex36 ex37 ex38 ex39 ex40 \
ex41 ex42 ex43 ex44 ex45 ex46 ex47 ex48 ex49 ex51 ex52 ex53 ex54 ex55 \
ex56 ex57 ex58 ex59 ex60 ex61 ex62 ex63 ex64 ex65
# ex66 \
ex56 ex57 ex58 ex59 ex60 ex61 ex62 ex63 ex64 ex65 ex66
# ex67 ex68 ex69 ex70 ex71 ex72 ex73 ex74 ex75 ex76 ex77
TEXOBJECTS=$(addsuffix .tex, $(OBJECTS))

3
docs/linuxex/README
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@ -61,9 +61,10 @@ ex57.pp contains an example of the SigAction function.
ex58.pp contains an example of the Signal function.
ex59.pp contains an example of the Alarm function.
ex60.pp contains an example of the GetDateTime function.
serial.pp contains an example of serial port programming in FPC.
ex61.pp contains an example of the CreateShellArgV function.
ex62.pp contains an example of the ReadLink function.
ex63.pp contains an example of the FRename function.
ex64.pp contains an example of the SysInfo function.
ex64.pp contains an example of the SigRaise function.
ex66.pp contains an example of the MMap function.
serial.pp contains an example of serial port programming in FPC.

37
docs/linuxex/ex66.pp Normal file
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@ -0,0 +1,37 @@
Program Example66;
{ Program to demonstrate the MMap function. }
Uses linux;
Var S : String;
fd,Len : Longint;
args : tmmapargs;
P : PChar;
begin
S:='This is a string'#0;
Len:=Length(S);
fd:=fdOpen('testfile.txt',Open_wrOnly or open_creat);
If fd=-1 then
Halt(1);
If fdWrite(fd,S[1],Len)=-1 then
Halt(2);
fdClose(fd);
fdOpen('testfile.txt',Open_rdOnly);
if fd=-1 then
Halt(3);
args.address:=0;
args.offset:=0;
args.size:=Len+1;
args.fd:=Fd;
args.flags:=MAP_PRIVATE;
args.prot:=PROT_READ or PROT_WRITE;
P:=Pchar(mmap(args));
If longint(P)=-1 then
Halt(4);
Writeln('Read in memory :',P);
fdclose(fd);
if Not MUnMap(P,Len) Then
Halt(LinuxError);
end.