[Mingw-users] Problems with POSIX & Windows Shared Memory in MinGW

[AliReza K. M. <kho...@gm...>]

Dear All,

I had two questions regarding  shared memory:

1)Can I use POSIX shared memory in MinGW? As I saw MinGW doesnot provide me
with sys/mman.h header file which is used by shm_open(), and shm_unlink().

So, is there any way to use POSIX shared memory with MinGW.


------------------------------------------

I also had a previous question about Windows shared memory.
I am trying to share some file between two codes, one compiled in MSVC++,
and another in MinGW, here is my complete files, and explanations.
I was assuming I should be able to share data between the two using Windows
Shared Memory, but seems that I cannot.

Let's say, I have written some handy functions to work with shared memory in
a separate .c, .h file, here is the simplified version (without any error
checking to make it simple)(MCCLSharedMemory.c)

http://pastebin.com/f199af577

Then I have two programs to read and write from/to shared memory,
here is the one that writes to shared memory (Wrtier.c):

http://pastebin.com/d36de5761

And here is the one that reads from the shared memory:

http://pastebin.com/d46dbfe37

I run the programs simultaneously.
Writer.c is compiled under MSVC++, and as you see after running, it blocks
because of "_getch()" untill I enter a character.
Reader.c is run under MinGW.

It's expected that the string written in MSVC++ to be viewed in MinGW, but I
cannot see the text in MinGW.

Thanks,
Alireza