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/* This code implemented by Mark Hammond (MHammond@skippinet.com.au) */
#include
<windows.h>
#include
<limits.h>
#include
<pydebug.h>
long
PyThread_get_thread_ident
(
void
);
/*
* Change all headers to pure ANSI as no one will use K&R style on an
* NT
*/
/*
* Initialization of the C package, should not be needed.
*/
static
void
PyThread__init_thread
(
void
)
{
}
/*
* Thread support.
*/
long
PyThread_start_new_thread
(
void
(
*
func
)(
void
*
),
void
*
arg
)
{
long
rv
;
int
success
=
-1
;
dprintf
((
"%ld: PyThread_start_new_thread called\n"
,
PyThread_get_thread_ident
()));
if
(!
initialized
)
PyThread_init_thread
();
rv
=
_beginthread
(
func
,
0
,
arg
);
/* use default stack size */
if
(
rv
!=
-1
) {
success
=
0
;
dprintf
((
"%ld: PyThread_start_new_thread succeeded:\n"
,
PyThread_get_thread_ident
()));
}
return
success
;
}
/*
* Return the thread Id instead of a handle. The Id is said to uniquely identify the
* thread in the system
*/
long
PyThread_get_thread_ident
(
void
)
{
if
(!
initialized
)
PyThread_init_thread
();
return
GetCurrentThreadId
();
}
void
PyThread_exit_thread
(
void
)
{
dprintf
((
"%ld: PyThread_exit_thread called\n"
,
PyThread_get_thread_ident
()));
if
(!
initialized
)
exit
(
0
);
_endthread
();
}
/*
* Lock support. It has to be implemented using Mutexes, as
* CE doesnt support semaphores. Therefore we use some hacks to
* simulate the non reentrant requirements of Python locks
*/
PyThread_type_lock
PyThread_allocate_lock
(
void
)
{
HANDLE
aLock
;
dprintf
((
"PyThread_allocate_lock called\n"
));
if
(!
initialized
)
PyThread_init_thread
();
aLock
=
CreateEvent
(
NULL
,
/* Security attributes */
0
,
/* Manual-Reset */
1
,
/* Is initially signalled */
NULL
);
/* Name of event */
dprintf
((
"%ld: PyThread_allocate_lock() -> %p\n"
,
PyThread_get_thread_ident
(),
aLock
));
return
(
PyThread_type_lock
)
aLock
;
}
void
PyThread_free_lock
(
PyThread_type_lock
aLock
)
{
dprintf
((
"%ld: PyThread_free_lock(%p) called\n"
,
PyThread_get_thread_ident
(),
aLock
));
CloseHandle
(
aLock
);
}
/*
* Return 1 on success if the lock was acquired
*
* and 0 if the lock was not acquired. This means a 0 is returned
* if the lock has already been acquired by this thread!
*/
int
PyThread_acquire_lock
(
PyThread_type_lock
aLock
,
int
waitflag
)
{
int
success
=
1
;
DWORD
waitResult
;
dprintf
((
"%ld: PyThread_acquire_lock(%p, %d) called\n"
,
PyThread_get_thread_ident
(),
aLock
,
waitflag
));
#ifndef
DEBUG
waitResult
=
WaitForSingleObject
(
aLock
, (
waitflag
?
INFINITE
:
0
));
#else
/* To aid in debugging, we regularly wake up. This allows us to
break into the debugger */
while
(TRUE) {
waitResult
=
WaitForSingleObject
(
aLock
,
waitflag
?
3000
:
0
);
if
(
waitflag
==
0
||
(
waitflag
&&
waitResult
==
WAIT_OBJECT_0
))
break
;
}
#endif
if
(
waitResult
!=
WAIT_OBJECT_0
) {
success
=
0
;
/* We failed */
}
dprintf
((
"%ld: PyThread_acquire_lock(%p, %d) -> %d\n"
,
PyThread_get_thread_ident
(),
aLock
,
waitflag
,
success
));
return
success
;
}
void
PyThread_release_lock
(
PyThread_type_lock
aLock
)
{
dprintf
((
"%ld: PyThread_release_lock(%p) called\n"
,
PyThread_get_thread_ident
(),
aLock
));
if
(!
SetEvent
(
aLock
))
dprintf
((
"%ld: Could not PyThread_release_lock(%p) error: %l\n"
,
PyThread_get_thread_ident
(),
aLock
,
GetLastError
()));
}
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