Go Premium for a chance to win a PS4. Enter to Win

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 218
  • Last Modified:

Threads, Mutexes on HP-UX 11.00 always crash

I am porting c++ code from Linux to HP-UX 11.00 (32-bit).  The problem that I'm having is that the program crashes (with a memory fault) whenever it tries to lock a mutex.   I am compiling with
the  -DPOSIX_C_SOURCE=199506L flag and also -D_POSIX_THREADS.  I am compiling with gcc 3.4.2 and the OS is HP-UX 11.00.  It has the latest QPK1100 loaded on it. Also, I've used ldd to make sure that the libraries are being loaded in the correct order.  The order that I get back is:

/usr/lib/libc.2 =>      /usr/lib/libc.2
/usr/lib/libdld.2 =>    /usr/lib/libdld.2
/usr/lib/libc.2 =>      /usr/lib/libc.2
/usr/lib/libm.2 =>      /usr/lib/libm.2
/usr/lib/libpthread.1 =>        /usr/lib/libpthread.1

I read somewhere that on 32 bit machines, the order is reversed, so that libpthread is actually getting brought in first and  not last.
0
mromeo
Asked:
mromeo
  • 2
  • 2
1 Solution
 
stefan73Commented:
Hi mromeo,
> I read somewhere that on 32 bit machines, the order is reversed, so
> that libpthread is actually getting brought in first and  not last.
Not on Solaris. It's the same for V8 + V9:

> ldd mdd
        libpthread.so.1 =>       /usr/lib/64/libpthread.so.1
        libc.so.1 =>     /usr/lib/64/libc.so.1
        libdl.so.1 =>    /usr/lib/64/libdl.so.1
        libthread.so.1 =>        /usr/lib/64/libthread.so.1
        /usr/platform/SUNW,Sun-Fire-15000/lib/sparcv9/libc_psr.so.1

> ldd mdd32
        libpthread.so.1 =>       /usr/lib/libpthread.so.1
        libc.so.1 =>     /usr/lib/libc.so.1
        libdl.so.1 =>    /usr/lib/libdl.so.1
        libthread.so.1 =>        /usr/lib/libthread.so.1
        /usr/platform/SUNW,Sun-Fire-15000/lib/libc_psr.so.1

But I don't know if HPUX is per se having a different shlib load order.


Cheers!

Stefan
0
 
mromeoAuthor Commented:
Ok, but I'm on HP-UX.  Is it true for HP-UX?
0
 
stefan73Commented:
Try it; use "ldd".

You can also use the "pmap" utility (assuming HPUX has the proctools installed) for a  running process.

Simply try
pmap $$
on your shell.
0
 
mromeoAuthor Commented:
I don't have pmap.  Where can I get it from?
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

  • 2
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now