NAME

       globus_thread.h - Globus Threading Abstraction.

SYNOPSIS

       #include 'globus_module.h'
       #include 'globus_time.h'
       #include <unistd.h>

   Data Structures
       union globus_thread_t
           Thread ID.
       union globus_threadattr_t
           Thread attributes.
       union globus_mutex_t
           Mutex.
       union globus_cond_t
           Condition variable.
       union globus_mutexattr_t
           Mutex attribute.
       union globus_condattr_t
           Condition variable attribute.
       union globus_thread_key_t
           Thread-specific data key.
       union globus_thread_once_t
           Thread once structure.

   Macros
       #define GLOBUS_THREAD_ONCE_INIT
           Thread once initializer value.
       #define GLOBUS_THREAD_CANCEL_DISABLE   0
           Disable thread cancellation value.
       #define GLOBUS_THREAD_CANCEL_ENABLE   1
           Enable thread cancellation value.
       #define GLOBUS_THREAD_MODULE
           Thread Module.

   Typedefs
       typedef void(* globus_thread_key_destructor_func_t) (void *value)
           Thread-specific data destructor.

   Functions
       int globus_thread_set_model (const char *model)
           Select threading model for an application.
       int globus_mutex_init (globus_mutex_t *mutex, globus_mutexattr_t *attr)
           Initialize a mutex.
       int globus_mutex_destroy (globus_mutex_t *mutex)
           Destroy a mutex.
       int globus_mutex_lock (globus_mutex_t *mutex)
           Lock a mutex.
       int globus_mutex_unlock (globus_mutex_t *mutex)
           Unlock a mutex.
       int globus_mutex_trylock (globus_mutex_t *mutex)
           Lock a mutex if it is not locked.
       int globus_cond_init (globus_cond_t *cond, globus_condattr_t *attr)
           Initialize a condition variable

       The globus_cond_init() function creates a condition variable that can be used for event
       signalling between threads. "
   int globus_cond_destroy (globus_cond_t *cond)
       Destroy a condition variable.
   int globus_cond_wait (globus_cond_t *cond, globus_mutex_t *mutex)
       Wait for a condition to be signalled.
   int globus_cond_timedwait (globus_cond_t *cond, globus_mutex_t *mutex, globus_abstime_t
       *abstime)
       Wait for a condition to be signalled.
   int globus_cond_signal (globus_cond_t *cond)
       Signal a condition to a thread.
   int globus_cond_broadcast (globus_cond_t *cond)
       Signal a condition to multiple threads.
   int globus_condattr_init (globus_condattr_t *cond_attr)
       Initialize a condition variable attribute.
   int globus_condattr_destroy (globus_condattr_t *cond_attr)
       Destroy a condition attribute.
   int globus_condattr_setspace (globus_condattr_t *cond_attr, int space)
       Set callback space associated with a condition variable attribute

       The globus_condattr_setspace() function sets the callback space to use with condition
       variables created with this attribute. Callback spaces are used to control how callbacks
       are issued to different threads. See Callback Spaces  for more information on callback
       spaces. "
   int globus_condattr_getspace (globus_condattr_t *cond_attr, int *space)
       Get callback space associated with a condition variable attribute

       The globus_condattr_getspace() function copies the value of the callback space associated
       with a condition variable attribute to the integer pointed to by the space parameter. "
   int globus_thread_create (globus_thread_t *thread, globus_threadattr_t *attr,
       globus_thread_func_t func, void *user_arg)
       Create a new thread.
   void * globus_thread_getspecific (globus_thread_key_t key)
       Get a thread-specific data value.
   int globus_thread_setspecific (globus_thread_key_t key, void *value)
       Set a thread-specific data value.
   int globus_thread_key_create (globus_thread_key_t *key, globus_thread_key_destructor_func_t
       func)
       Create a key for thread-specific storage.
   int globus_thread_key_delete (globus_thread_key_t key)
       Delete a thread-local storage key.
   int globus_thread_once (globus_thread_once_t *once, void(*init_routine)(void))
       Execute a function one time.
   void globus_thread_yield (void)
       Yield execution to another thread.
   int globus_thread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask)
       Modify the current thread's signal mask.
   int globus_thread_kill (globus_thread_t thread, int sig)
       Send a signal to a thread.
   void globus_thread_exit (void *value)
       Terminate the current thread.
   globus_thread_t globus_thread_self (void)
       Determine the current thread's ID.
   int globus_thread_equal (globus_thread_t thread1, globus_thread_t thread2)
       Check whether thread identifiers match.
   globus_bool_t globus_i_am_only_thread (void)
       Determine if threads are supported.
   globus_bool_t globus_thread_preemptive_threads (void)
       Indicate whether the active thread model supports preemption.
   void * globus_thread_cancellable_func (void *(*func)(void *), void *arg,
       void(*cleanup_func)(void *), void *cleanup_arg, globus_bool_t execute_cleanup)
       Execute a function with thread cleanup in case of cancellation.
   int globus_thread_cancel (globus_thread_t thr)
       Cancel a thread.
   void globus_thread_testcancel (void)
       Thread cancellation point.
   int globus_thread_setcancelstate (int state, int *oldstate)
       Set the thread's cancellable state.

Detailed Description

       Globus Threading Abstraction.

       Globus threads package which can work with either pthreads or without threads, depending
       on runtime configuration

Author

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