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python/Python/thread_lwp.h at master · dyljqq/python · GitHub
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#include
<stdlib.h>
#include
<lwp/lwp.h>
#include
<lwp/stackdep.h>
#define
STACKSIZE
1000
/* stacksize for a thread */
#define
NSTACKS
2
/* # stacks to be put in cache initially */
struct
lock
{
int
lock_locked
;
cv_t
lock_condvar
;
mon_t
lock_monitor
;
};
/*
* Initialization.
*/
static
void
PyThread__init_thread
(
void
)
{
lwp_setstkcache
(
STACKSIZE
,
NSTACKS
);
}
/*
* Thread support.
*/
long
PyThread_start_new_thread
(
void
(
*
func
)(
void
*
),
void
*
arg
)
{
thread_t
tid
;
int
success
;
dprintf
((
"PyThread_start_new_thread called\n"
));
if
(!
initialized
)
PyThread_init_thread
();
success
=
lwp_create
(
&
tid
,
func
,
MINPRIO
,
0
,
lwp_newstk
(),
1
,
arg
);
return
success
<
0
?
-1
:
0
;
}
long
PyThread_get_thread_ident
(
void
)
{
thread_t
tid
;
if
(!
initialized
)
PyThread_init_thread
();
if
(
lwp_self
(
&
tid
)
<
0
)
return
-1
;
return
tid
.
thread_id
;
}
static
void
do_PyThread_exit_thread
(
int
no_cleanup
)
{
dprintf
((
"PyThread_exit_thread called\n"
));
if
(!
initialized
)
if
(
no_cleanup
)
_exit
(
0
);
else
exit
(
0
);
lwp_destroy
(
SELF
);
}
void
PyThread_exit_thread
(
void
)
{
do_PyThread_exit_thread
(
0
);
}
void
PyThread__exit_thread
(
void
)
{
do_PyThread_exit_thread
(
1
);
}
#ifndef
NO_EXIT_PROG
static
void
do_PyThread_exit_prog
(
int
status
,
int
no_cleanup
)
{
dprintf
((
"PyThread_exit_prog(%d) called\n"
,
status
));
if
(!
initialized
)
if
(
no_cleanup
)
_exit
(
status
);
else
exit
(
status
);
pod_exit
(
status
);
}
void
PyThread_exit_prog
(
int
status
)
{
do_PyThread_exit_prog
(
status
,
0
);
}
void
PyThread__exit_prog
(
int
status
)
{
do_PyThread_exit_prog
(
status
,
1
);
}
#endif
/* NO_EXIT_PROG */
/*
* Lock support.
*/
PyThread_type_lock
PyThread_allocate_lock
(
void
)
{
struct
lock
*
lock
;
extern
char
*
malloc
(
size_t
);
dprintf
((
"PyThread_allocate_lock called\n"
));
if
(!
initialized
)
PyThread_init_thread
();
lock
=
(
struct
lock
*
)
malloc
(
sizeof
(
struct
lock
));
lock
->
lock_locked
=
0
;
(
void
)
mon_create
(
&
lock
->
lock_monitor
);
(
void
)
cv_create
(
&
lock
->
lock_condvar
,
lock
->
lock_monitor
);
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
));
mon_destroy
(((
struct
lock
*
)
lock
)
->
lock_monitor
);
free
((
char
*
)
lock
);
}
int
PyThread_acquire_lock
(
PyThread_type_lock
lock
,
int
waitflag
)
{
int
success
;
dprintf
((
"PyThread_acquire_lock(%p, %d) called\n"
,
lock
,
waitflag
));
success
=
0
;
(
void
)
mon_enter
(((
struct
lock
*
)
lock
)
->
lock_monitor
);
if
(
waitflag
)
while
(((
struct
lock
*
)
lock
)
->
lock_locked
)
cv_wait
(((
struct
lock
*
)
lock
)
->
lock_condvar
);
if
(!((
struct
lock
*
)
lock
)
->
lock_locked
) {
success
=
1
;
((
struct
lock
*
)
lock
)
->
lock_locked
=
1
;
}
cv_broadcast
(((
struct
lock
*
)
lock
)
->
lock_condvar
);
mon_exit
(((
struct
lock
*
)
lock
)
->
lock_monitor
);
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
));
(
void
)
mon_enter
(((
struct
lock
*
)
lock
)
->
lock_monitor
);
((
struct
lock
*
)
lock
)
->
lock_locked
=
0
;
cv_broadcast
(((
struct
lock
*
)
lock
)
->
lock_condvar
);
mon_exit
(((
struct
lock
*
)
lock
)
->
lock_monitor
);
}
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