int pthread_attr_init(pthread_attr_t *attr); -int pthread_attr_destroy(pthread_attr_t *attr); -int pthread_attr_setdetachstate(pthread_attr_t *attr, - int detachstate); -int pthread_attr_getdetachstate(const pthread_attr_t *attr, - int *detachstate); -int pthread_attr_setstackaddr(pthread_attr_t *attr, - void *stackaddr); -int pthread_attr_getstackaddr(const pthread_attr_t *attr, - void **stackaddr); -int pthread_attr_setstacksize(pthread_attr_t *attr, - size_t stacksize); -int pthread_attr_getstacksize(const pthread_attr_t *attr, - size_t *stacksize); -int pthread_create( pthread_t *thread, - const pthread_attr_t *attr, - void *(*start_routine)(void *), - void *arg); -pthread_t pthread_self( void ); -int pthread_equal(pthread_t thread1, pthread_t thread2); -void pthread_exit(void *retval); -int pthread_join(pthread_t thread, void **thread_return); -int pthread_detach(pthread_t thread); -int pthread_once(pthread_once_t *once_control, - void (*init_routine)(void)); |
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The presence of thread support as a whole is controlled by the the - CYGPKG_POSIX_PTHREAD configuration option. Note that disabling - this will also disable many other features of the POSIX package, - since these are intimately bound up with the thread mechanism. -
The default (non-scheduling) thread attributes are: -
detachstate PTHREAD_CREATE_JOINABLE - stackaddr unset - stacksize unset - |
Dynamic thread stack allocation is only provided if there is an - implementation of - malloc() configured (i.e. a package - implements the - CYGINT_MEMALLOC_MALLOC_ALLOCATORS - interface). If there is no malloc() available, then the thread - creator must supply a stack. If only a stack address is supplied - then the stack is assumed to be PTHREAD_STACK_MIN - bytes long. This size is seldom useful for any but the most - trivial of threads. If a different sized stack is used, both - the stack address and stack size must be supplied. -
The value of PTHREAD_THREADS_MAX is supplied by - the CYGNUM_POSIX_PTHREAD_THREADS_MAX - option. This defines the maximum number of threads allowed. The - POSIX standard requires this value to be at least 64, and this - is the default value set. -
When the POSIX package is installed, the thread that calls - main() is initialized as a POSIX thread. The - priority of that thread is controlled by the - CYGNUM_POSIX_MAIN_DEFAULT_PRIORITY option. -