Help needed on DATABASE ERROR: : unable to initialize mutex

Question

Hello,
I am trying to run Berkeley DB on a MIPS platform using DbEnv. While the code runs fine on Linux RedHat, it throws the following error message when run on the MIPS:
DATABASE ERROR: : unable to initialize mutex: Function not implemented
DATABASE ERROR: : PANIC: Function not implemented
DATABASE ERROR: : unable to join the environment
I run a little test program which uses mutexes and conditionson the MIPS platform and seems to work fine.
What could be the problem?
Thank you and regards,
Sebastian

Answer 1

Hello,
First of all thank you very much for all the support on this matter.
Second, I was unable to access the faq because it is asking for authentication which I don't have.
Here are more details on what I am trying to do, hopefully will help resolve the issue:
- I am trying to run Berkeley DB on a MIPS R3000 hardware platform running Linux 2.4 kernel.
- When configuring Berkeley DB I tried using --with-mutex=MIPS/gcc-assembly which resulted in an Illegal instruction error being thrown when trying to open the environment
- When configuring Berkeley DB I also tried using --enable-posixmutexes which throws the error message mentioned in my initial post
- I also wrote a little program that tries to use process shared mutexes and seems to work fine on the embeded system. here is what i successfully run on the box:
pthread_attr_t attr;
pthread_mutexattr_t mutex_attr;
pthread_condattr_t cond_attr;
pthread_mutexattr_setpshared(&mutex_attr, PTHREAD_PROCESS_SHARED);     // set the mutex attribute to process shared
pthread_condattr_setpshared(&cond_attr, PTHREAD_PROCESS_SHARED);          // set the condition attribute to process shared
/* Initialize mutex and condition variable objects */
pthread_mutex_init(&count_mutex, (const pthread_mutexattr_t *)&mutex_attr);
pthread_cond_init (&count_threshold_cv, (const pthread_condattr_t *)&cond_attr);
For portability, explicitly create threads in a joinable state
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
pthread_create(&threads[0], &attr, inc_count, (void *)&thread_ids[0]);
pthread_create(&threads[1], &attr, inc_count, (void *)&thread_ids[1]);
pthread_create(&threads[2], &attr, watch_count, (void *)&thread_ids[2]);
Thank you very much for your help!
Regards,
Sebastian