Re: alignment and thread problem - solaris

[Richard Levitte - VMS Whacker]

rw26> I'm using openssl-0.9.4 on solirs 2.6 on a Sun E3500 (sparc)
[...]

Noted.

rw26> Anyway, when I run my app, I call n = SSL_read( ssl, (char *)&ch, 1 );
rw26> to retrieve a byte into an int named ch. I find that my correct
rw26> byte is returned in the most significant byte of the int.

No surprise there.  A sparc is a big-endian architecture, meaning the
first byte of an int (address-wise) is the most significant byte.

rw26> This seems to indicate that I have some sort of an alignment
rw26> issue.

No.

rw26> I could use help solving this problem.

Make ch a char instead of an int.

rw26> The other problem is with my multithreading. I'm opening a thread
rw26> for each new accepted socket. When I do this I I call SSL_new, set
rw26> the fd to my newly accepted connection and call SSL_accept.
rw26> Here's the code from my server:
rw26> 
rw26>   pthread_mutex_lock( &mallfree_mutex );
rw26>   myev->ssl = SSL_new (ctx);         
rw26>   CHK_NULL( myev->ssl ); 
rw26>   SSL_set_fd (myev->ssl, myev->fd);
rw26>   err = SSL_accept (myev->ssl);
rw26>   if( err == -1 ) {
rw26>         close( myev->fd );
rw26>         SSL_free(myev->ssl);
rw26>         free( myev );
rw26>         pthread_mutex_unlock( &mallfree_mutex );
rw26>         continue;
rw26>   }      
rw26>   pthread_mutex_unlock( &mallfree_mutex );
rw26> 
rw26> 
rw26> When I open more than three simultaneous threads, my server does a
rw26> segmentation fault and crashes. Anybody got any ideas what I need
rw26> to do?

Well, the code above doesn't look too bad to me, except I'd like to
know where myev comes from.  Is it a function-local variable or
something else?  Same thing goes for err and ctx.  This is clearly a
multithread-safety issue.

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