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cpython/Python/thread_cthread.h at 2.7 · python-emscripten/cpython · GitHub
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thread_cthread.h
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thread_cthread.h
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#ifdef
MACH_C_THREADS
#include
<mach/cthreads.h>
#endif
#ifdef
HURD_C_THREADS
#include
<cthreads.h>
#endif
/*
* Initialization.
*/
static
void
PyThread__init_thread
(
void
)
{
#ifndef
HURD_C_THREADS
/* Roland McGrath said this should not be used since this is
done while linking to threads */
cthread_init
();
#else
/* do nothing */
;
#endif
}
/*
* Thread support.
*/
long
PyThread_start_new_thread
(
void
(
*
func
)(
void
*
),
void
*
arg
)
{
int
success
=
0
;
/* init not needed when SOLARIS_THREADS and */
/* C_THREADS implemented properly */
dprintf
((
"PyThread_start_new_thread called\n"
));
if
(!
initialized
)
PyThread_init_thread
();
/* looks like solaris detaches the thread to never rejoin
* so well do it here
*/
cthread_detach
(
cthread_fork
((
cthread_fn_t
)
func
,
arg
));
return
success
<
0
?
-1
:
0
;
}
long
PyThread_get_thread_ident
(
void
)
{
if
(!
initialized
)
PyThread_init_thread
();
return
(
long
)
cthread_self
();
}
void
PyThread_exit_thread
(
void
)
{
dprintf
((
"PyThread_exit_thread called\n"
));
if
(!
initialized
)
exit
(
0
);
cthread_exit
(
0
);
}
/*
* Lock support.
*/
PyThread_type_lock
PyThread_allocate_lock
(
void
)
{
mutex_t
lock
;
dprintf
((
"PyThread_allocate_lock called\n"
));
if
(!
initialized
)
PyThread_init_thread
();
lock
=
mutex_alloc
();
if
(
mutex_init
(
lock
)) {
perror
(
"mutex_init"
);
free
((
void
*
)
lock
);
lock
=
0
;
}
dprintf
((
"PyThread_allocate_lock() -> %p\n"
,
lock
));
return
(
PyThread_type_lock
)
lock
;
}
void
PyThread_free_lock
(
PyThread_type_lock
lock
)
{
dprintf
((
"PyThread_free_lock(%p) called\n"
,
lock
));
mutex_free
(
lock
);
}
int
PyThread_acquire_lock
(
PyThread_type_lock
lock
,
int
waitflag
)
{
int
success
=
FALSE;
dprintf
((
"PyThread_acquire_lock(%p, %d) called\n"
,
lock
,
waitflag
));
if
(
waitflag
) {
/* blocking */
mutex_lock
((
mutex_t
)
lock
);
success
=
TRUE;
}
else
{
/* non blocking */
success
=
mutex_try_lock
((
mutex_t
)
lock
);
}
dprintf
((
"PyThread_acquire_lock(%p, %d) -> %d\n"
,
lock
,
waitflag
,
success
));
return
success
;
}
void
PyThread_release_lock
(
PyThread_type_lock
lock
)
{
dprintf
((
"PyThread_release_lock(%p) called\n"
,
lock
));
mutex_unlock
((
mutex_t
)
lock
);
}
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