+++ /dev/null
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->Thread Management [POSIX Section 16]</TITLE
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-NAME="POSIX-THREAD-MANAGEMENT">Thread Management [POSIX Section 16]</H1
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-><A
-NAME="AEN13263">Functions Implemented</H2
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-><PRE
-CLASS="SCREEN"
->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));</PRE
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-NAME="AEN13266">Functions Omitted</H2
-><P
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-><A
-NAME="AEN13269">Notes</H2
-><P
-></P
-><UL
-><LI
-><P
-> 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.
- </P
-></LI
-><LI
-><P
-> The default (non-scheduling) thread attributes are:
- </P
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-><TD
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-> detachstate PTHREAD_CREATE_JOINABLE
- stackaddr unset
- stacksize unset
- </PRE
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-><P
-> Dynamic thread stack allocation is only provided if there is an
- implementation of
- <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->malloc()</I
-></SPAN
-> 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.
- </P
-></LI
-><LI
-><P
-> 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.
- </P
-></LI
-><LI
-><P
-> When the POSIX package is installed, the thread that calls
- <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->main()</I
-></SPAN
-> is initialized as a POSIX thread. The
- priority of that thread is controlled by the
- CYGNUM_POSIX_MAIN_DEFAULT_PRIORITY option.
- </P
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