@subheading chx_fatal
@anchor{chx_fatal}
@deftypefun {void} {chx_fatal} (uint32_t @var{err_code})
@var{err_code}: Error code

When it detects a coding error, this function will be called to
stop further execution of code.  It never returns.
@end deftypefun

@subheading chopstx_create
@anchor{chopstx_create}
@deftypefun {chopstx_t} {chopstx_create} (uint32_t @var{flags_and_prio}, uintptr_t @var{stack_addr}, size_t @var{stack_size}, voidfunc @var{thread_entry}, void * @var{arg})
@var{flags_and_prio}: Flags and priority

@var{stack_addr}: Stack address

@var{stack_size}: Size of stack

@var{thread_entry}: Entry function of new thread

@var{arg}: Argument to the thread entry function

Create a thread.  Returns thread ID.
@end deftypefun

@subheading chopstx_usec_wait
@anchor{chopstx_usec_wait}
@deftypefun {void} {chopstx_usec_wait} (uint32_t @var{usec})
@var{usec}: number of micro seconds

Sleep for @var{usec}.
@end deftypefun

@subheading chopstx_mutex_init
@anchor{chopstx_mutex_init}
@deftypefun {void} {chopstx_mutex_init} (chopstx_mutex_t * @var{mutex})
@var{mutex}: Mutex

Initialize @var{mutex}.
@end deftypefun

@subheading chopstx_mutex_lock
@anchor{chopstx_mutex_lock}
@deftypefun {void} {chopstx_mutex_lock} (chopstx_mutex_t * @var{mutex})
@var{mutex}: Mutex

Lock @var{mutex}.
@end deftypefun

@subheading chopstx_mutex_unlock
@anchor{chopstx_mutex_unlock}
@deftypefun {void} {chopstx_mutex_unlock} (chopstx_mutex_t * @var{mutex})
@var{mutex}: Mutex

Unlock @var{mutex}.
@end deftypefun

@subheading chopstx_cond_init
@anchor{chopstx_cond_init}
@deftypefun {void} {chopstx_cond_init} (chopstx_cond_t * @var{cond})
@var{cond}: Condition variable

Initialize @var{cond}.
@end deftypefun

@subheading chopstx_cond_wait
@anchor{chopstx_cond_wait}
@deftypefun {void} {chopstx_cond_wait} (chopstx_cond_t * @var{cond}, chopstx_mutex_t * @var{mutex})
@var{cond}: Condition variable

@var{mutex}: Associated mutex

Wait for @var{cond} with @var{mutex}.
@end deftypefun

@subheading chopstx_cond_signal
@anchor{chopstx_cond_signal}
@deftypefun {void} {chopstx_cond_signal} (chopstx_cond_t * @var{cond})
@var{cond}: Condition variable

Wake up a thread waiting on @var{cond}.
@end deftypefun

@subheading chopstx_cond_broadcast
@anchor{chopstx_cond_broadcast}
@deftypefun {void} {chopstx_cond_broadcast} (chopstx_cond_t * @var{cond})
@var{cond}: Condition Variable

Wake up all threads waiting on @var{cond}.
@end deftypefun

@subheading chopstx_claim_irq
@anchor{chopstx_claim_irq}
@deftypefun {void} {chopstx_claim_irq} (chopstx_intr_t * @var{intr}, uint8_t @var{irq_num})
@var{intr}: Pointer to INTR structure

@var{irq_num}: IRQ Number (hardware specific)

Claim interrupt @var{intr} with @var{irq_num}
@end deftypefun

@subheading chopstx_intr_wait
@anchor{chopstx_intr_wait}
@deftypefun {void} {chopstx_intr_wait} (chopstx_intr_t * @var{intr})
@var{intr}: Pointer to INTR structure

Wait for the interrupt @var{intr} to be occured.
@end deftypefun

@subheading chopstx_cleanup_push
@anchor{chopstx_cleanup_push}
@deftypefun {void} {chopstx_cleanup_push} (struct chx_cleanup * @var{clp})
@var{clp}: Pointer to clean-up structure

Register a clean-up structure.
@end deftypefun

@subheading chopstx_cleanup_pop
@anchor{chopstx_cleanup_pop}
@deftypefun {void} {chopstx_cleanup_pop} (int @var{execute})
@var{execute}: Execute the clen-up function on release

Unregister a clean-up structure.  When @var{execute} is non-zero, the
clean-up will be executed.
@end deftypefun

@subheading chopstx_exit
@anchor{chopstx_exit}
@deftypefun {void} {chopstx_exit} (void * @var{retval})
@var{retval}: Return value (to be caught by a joining thread)

Calling this function terminates the execution of running thread,
after calling clean up functions.  If the calling thread still
holds mutexes, they will be released.  This function never
returns.
@end deftypefun

@subheading chopstx_join
@anchor{chopstx_join}
@deftypefun {int} {chopstx_join} (chopstx_t @var{thd}, void ** @var{ret})
@var{thd}: Thread to wait

@var{ret}: Pointer to void * to store return value

Waits for the thread of @var{thd} to terminate.
Returns 0 on success, 1 when waiting is interrupted.
@end deftypefun

@subheading chopstx_cancel
@anchor{chopstx_cancel}
@deftypefun {void} {chopstx_cancel} (chopstx_t @var{thd})
@var{thd}: Thread to be canceled

This function requests a cancellation of a thread @var{thd}.
No return value.
@end deftypefun

@subheading chopstx_testcancel
@anchor{chopstx_testcancel}
@deftypefun {void} {chopstx_testcancel} ( @var{void})

Calling chopstx_testcancel creates a cancellation point.
No return value.  If the thread is canceled, this function
does not return.
@end deftypefun

@subheading chopstx_setcancelstate
@anchor{chopstx_setcancelstate}
@deftypefun {int} {chopstx_setcancelstate} (int @var{cancel_disable})
@var{cancel_disable}: 0 to enable cancelation, otherwise disabled.

Calling chopstx_setcancelstate sets cancelability state.

Returns old state which is 0 when it was enabled.
@end deftypefun

@subheading chopstx_poll
@anchor{chopstx_poll}
@deftypefun {int} {chopstx_poll} (uint32_t * @var{usec_p}, int @var{n}, struct chx_poll_head * [] @var{pd_array})
@var{usec_p}: Pointer to usec for timeout.  Forever if NULL.

@var{n}: Number of poll descriptors

@var{pd_array}: Pointer to an array of poll descriptor pointer which
should be one of:
chopstx_poll_cond_t, chopstx_poll_join_t, or chopstx_intr_t.

Returns number of active descriptors.
@end deftypefun

@subheading chopstx_setpriority
@anchor{chopstx_setpriority}
@deftypefun {chopstx_prio_t} {chopstx_setpriority} (chopstx_prio_t @var{prio_new})
Change the schedule priority with @var{prio}.
Returns the old priority.

In general, it is not recommended to use this function because
dynamically changing schedule priorities complicates the system.
Only a possible valid usage of this function is in the main thread
which starts its execution with priority of CHX_PRIO_MAIN_INIT, and
let it change its priority after initialization of other threads.
@end deftypefun