Up: Parallel Computing [Contents][Index]
To enable thread-safety in Blitz++, you need to do one of these things:
gcc -pthread, or CC -mt under Solaris.
(These options define _REENTRANT, which tells Blitz++ to generate
thread-safe code).
-DBZ_THREADSAFE, or #define BZ_THREADSAFE
before including any Blitz++ headers.
In threadsafe mode, Blitz++ array reference counts are safeguarded by a
mutex. By default, pthread mutexes are used. If you would prefer a
different mutex implementation, add the appropriate BZ_MUTEX macros
to <blitz/blitz.h> and send them to blitz-dev@oonumerics.org
for incorporation.
Blitz++ does not do locking for every array element access; this would result in terrible performance. It is the job of the library user to ensure that appropriate synchronization is used.