cpython-lru_cache-weakref: Python/thread

annotate Python/thread_nt.h @ 68237:364638d6434d 2.3

Close 2.3 branch.

author	Georg Brandl <georg@python.org>
date	Sat, 05 Mar 2011 14:55:46 +0100
parents	59da5b57c61b
children	9241218992c1

rev	line source
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	1
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	2 /* This code implemented by Dag.Gruneau@elsa.preseco.comm.se */
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	3 /* Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru */
22092 7a3e03b541ff SF patch 522961: Leak in Python/thread_nt.h, from Gerald S. Williams. Tim Peters <tim.peters@gmail.com> parents: 21766 diff changeset	4 /* Eliminated some memory leaks, gsw@agere.com */
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	5
6029 68f2d7704180 Use _beginthread() and _endthread() in favor of CreateThread() and Guido van Rossum <guido@python.org> parents: 4503 diff changeset	6 #include <windows.h>
68f2d7704180 Use _beginthread() and _endthread() in favor of CreateThread() and Guido van Rossum <guido@python.org> parents: 4503 diff changeset	7 #include <limits.h>
68f2d7704180 Use _beginthread() and _endthread() in favor of CreateThread() and Guido van Rossum <guido@python.org> parents: 4503 diff changeset	8 #include <process.h>
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	9
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	10 typedef struct NRMUTEX {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	11 LONG owned ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	12 DWORD thread_id ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	13 HANDLE hevent ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	14 } NRMUTEX, *PNRMUTEX ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	15
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	16 typedef PVOID WINAPI interlocked_cmp_xchg_t(PVOID *dest, PVOID exc, PVOID comperand) ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	17
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	18 /* Sorry mate, but we haven't got InterlockedCompareExchange in Win95! */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	19 static PVOID WINAPI interlocked_cmp_xchg(PVOID *dest, PVOID exc, PVOID comperand)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	20 {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	21 static LONG spinlock = 0 ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	22 PVOID result ;
12661 b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	23 DWORD dwSleep = 0;
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	24
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	25 /* Acqire spinlock (yielding control to other threads if cant aquire for the moment) */
12661 b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	26 while(InterlockedExchange(&spinlock, 1))
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	27 {
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	28 // Using Sleep(0) can cause a priority inversion.
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	29 // Sleep(0) only yields the processor if there's
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	30 // another thread of the same priority that's
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	31 // ready to run. If a high-priority thread is
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	32 // trying to acquire the lock, which is held by
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	33 // a low-priority thread, then the low-priority
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	34 // thread may never get scheduled and hence never
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	35 // free the lock. NT attempts to avoid priority
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	36 // inversions by temporarily boosting the priority
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	37 // of low-priority runnable threads, but the problem
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	38 // can still occur if there's a medium-priority
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	39 // thread that's always runnable. If Sleep(1) is used,
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	40 // then the thread unconditionally yields the CPU. We
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	41 // only do this for the second and subsequent even
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	42 // iterations, since a millisecond is a long time to wait
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	43 // if the thread can be scheduled in again sooner
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	44 // (~100,000 instructions).
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	45 // Avoid priority inversion: 0, 1, 0, 1,...
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	46 Sleep(dwSleep);
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	47 dwSleep = !dwSleep;
b91fdc29c5bd Bill Tutt: Guido van Rossum <guido@python.org> parents: 12586 diff changeset	48 }
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	49 result = *dest ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	50 if (result == comperand)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	51 *dest = exc ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	52 /* Release spinlock */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	53 spinlock = 0 ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	54 return result ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	55 } ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	56
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	57 static interlocked_cmp_xchg_t *ixchg ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	58 BOOL InitializeNonRecursiveMutex(PNRMUTEX mutex)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	59 {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	60 if (!ixchg)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	61 {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	62 /* Sorely, Win95 has no InterlockedCompareExchange API (Win98 has), so we have to use emulation */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	63 HANDLE kernel = GetModuleHandle("kernel32.dll") ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	64 if (!kernel \|\| (ixchg = (interlocked_cmp_xchg_t *)GetProcAddress(kernel, "InterlockedCompareExchange")) == NULL)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	65 ixchg = interlocked_cmp_xchg ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	66 }
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	67
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	68 mutex->owned = -1 ; /* No threads have entered NonRecursiveMutex */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	69 mutex->thread_id = 0 ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	70 mutex->hevent = CreateEvent(NULL, FALSE, FALSE, NULL) ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	71 return mutex->hevent != NULL ; /* TRUE if the mutex is created */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	72 }
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	73
13096 8c8de5b736dc Trent Mick's Win64 changes: size_t vs. int or long; also some overflow Guido van Rossum <guido@python.org> parents: 12661 diff changeset	74 #ifdef InterlockedCompareExchange
8c8de5b736dc Trent Mick's Win64 changes: size_t vs. int or long; also some overflow Guido van Rossum <guido@python.org> parents: 12661 diff changeset	75 #undef InterlockedCompareExchange
8c8de5b736dc Trent Mick's Win64 changes: size_t vs. int or long; also some overflow Guido van Rossum <guido@python.org> parents: 12661 diff changeset	76 #endif
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	77 #define InterlockedCompareExchange(dest,exchange,comperand) (ixchg((dest), (exchange), (comperand)))
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	78
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	79 VOID DeleteNonRecursiveMutex(PNRMUTEX mutex)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	80 {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	81 /* No in-use check */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	82 CloseHandle(mutex->hevent) ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	83 mutex->hevent = NULL ; /* Just in case */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	84 }
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	85
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	86 DWORD EnterNonRecursiveMutex(PNRMUTEX mutex, BOOL wait)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	87 {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	88 /* Assume that the thread waits successfully */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	89 DWORD ret ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	90
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	91 /* InterlockedIncrement(&mutex->owned) == 0 means that no thread currently owns the mutex */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	92 if (!wait)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	93 {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	94 if (InterlockedCompareExchange((PVOID *)&mutex->owned, (PVOID)0, (PVOID)-1) != (PVOID)-1)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	95 return WAIT_TIMEOUT ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	96 ret = WAIT_OBJECT_0 ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	97 }
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	98 else
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	99 ret = InterlockedIncrement(&mutex->owned) ?
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	100 /* Some thread owns the mutex, let's wait... */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	101 WaitForSingleObject(mutex->hevent, INFINITE) : WAIT_OBJECT_0 ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	102
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	103 mutex->thread_id = GetCurrentThreadId() ; /* We own it */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	104 return ret ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	105 }
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	106
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	107 BOOL LeaveNonRecursiveMutex(PNRMUTEX mutex)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	108 {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	109 /* We don't own the mutex */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	110 mutex->thread_id = 0 ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	111 return
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	112 InterlockedDecrement(&mutex->owned) < 0 \|\|
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	113 SetEvent(mutex->hevent) ; /* Other threads are waiting, wake one on them up */
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	114 }
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	115
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	116 PNRMUTEX AllocNonRecursiveMutex(void)
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	117 {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	118 PNRMUTEX mutex = (PNRMUTEX)malloc(sizeof(NRMUTEX)) ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	119 if (mutex && !InitializeNonRecursiveMutex(mutex))
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	120 {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	121 free(mutex) ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	122 mutex = NULL ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	123 }
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	124 return mutex ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	125 }
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	126
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	127 void FreeNonRecursiveMutex(PNRMUTEX mutex)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	128 {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	129 if (mutex)
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	130 {
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	131 DeleteNonRecursiveMutex(mutex) ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	132 free(mutex) ;
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	133 }
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	134 }
cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	135
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	136 long PyThread_get_thread_ident(void);
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	137
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	138 /*
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	139 * Initialization of the C package, should not be needed.
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	140 */
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	141 static void PyThread__init_thread(void)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	142 {
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	143 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	144
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	145 /*
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	146 * Thread support.
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	147 */
20468 ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	148
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	149 typedef struct {
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	150 void (func)(void);
29755 59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	151 void *arg;
20468 ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	152 long id;
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	153 HANDLE done;
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	154 } callobj;
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	155
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	156 static int
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	157 bootstrap(void *call)
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	158 {
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	159 callobj obj = (callobj)call;
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	160 /* copy callobj since other thread might free it before we're done */
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	161 void (func)(void) = obj->func;
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	162 void *arg = obj->arg;
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	163
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	164 obj->id = PyThread_get_thread_ident();
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	165 ReleaseSemaphore(obj->done, 1, NULL);
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	166 func(arg);
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	167 return 0;
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	168 }
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	169
29755 59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	170 long
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	171 PyThread_start_new_thread(void (func)(void ), void *arg)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	172 {
19568 b0f5278a2ab4 SF bug [#456252] Python should never stomp on [u]intptr_t. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	173 unsigned long rv;
29755 59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	174 callobj obj;
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	175
29755 59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	176 dprintf(("%ld: PyThread_start_new_thread called\n",
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	177 PyThread_get_thread_ident()));
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	178 if (!initialized)
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	179 PyThread_init_thread();
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	180
29755 59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	181 obj.id = -1; /* guilty until proved innocent */
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	182 obj.func = func;
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	183 obj.arg = arg;
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	184 obj.done = CreateSemaphore(NULL, 0, 1, NULL);
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	185 if (obj.done == NULL)
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	186 return -1;
20468 ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 19568 diff changeset	187
29755 59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	188 rv = _beginthread(bootstrap, 0, &obj); /* use default stack size */
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	189 if (rv == (unsigned long)-1) {
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	190 /* I've seen errno == EAGAIN here, which means "there are
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	191 * too many threads".
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	192 */
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	193 dprintf(("%ld: PyThread_start_new_thread failed: %p errno %d\n",
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	194 PyThread_get_thread_ident(), rv, errno));
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	195 obj.id = -1;
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	196 }
29755 59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	197 else {
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	198 dprintf(("%ld: PyThread_start_new_thread succeeded: %p\n",
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	199 PyThread_get_thread_ident(), rv));
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	200 /* wait for thread to initialize, so we can get its id */
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	201 WaitForSingleObject(obj.done, INFINITE);
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	202 assert(obj.id != -1);
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	203 }
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	204 CloseHandle((HANDLE)obj.done);
59da5b57c61b An Anonymous Coward on c.l.py posted a little program with bizarre Tim Peters <tim.peters@gmail.com> parents: 22092 diff changeset	205 return obj.id;
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	206 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	207
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	208 /*
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	209 * Return the thread Id instead of an handle. The Id is said to uniquely identify the
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	210 * thread in the system
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	211 */
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	212 long PyThread_get_thread_ident(void)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	213 {
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	214 if (!initialized)
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	215 PyThread_init_thread();
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	216
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	217 return GetCurrentThreadId();
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	218 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	219
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	220 static void do_PyThread_exit_thread(int no_cleanup)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	221 {
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	222 dprintf(("%ld: PyThread_exit_thread called\n", PyThread_get_thread_ident()));
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	223 if (!initialized)
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	224 if (no_cleanup)
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	225 _exit(0);
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	226 else
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	227 exit(0);
6029 68f2d7704180 Use _beginthread() and _endthread() in favor of CreateThread() and Guido van Rossum <guido@python.org> parents: 4503 diff changeset	228 _endthread();
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	229 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	230
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	231 void PyThread_exit_thread(void)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	232 {
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	233 do_PyThread_exit_thread(0);
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	234 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	235
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	236 void PyThread__exit_thread(void)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	237 {
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	238 do_PyThread_exit_thread(1);
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	239 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	240
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	241 #ifndef NO_EXIT_PROG
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	242 static void do_PyThread_exit_prog(int status, int no_cleanup)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	243 {
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	244 dprintf(("PyThread_exit_prog(%d) called\n", status));
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	245 if (!initialized)
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	246 if (no_cleanup)
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	247 _exit(status);
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	248 else
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	249 exit(status);
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	250 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	251
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	252 void PyThread_exit_prog(int status)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	253 {
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	254 do_PyThread_exit_prog(status, 0);
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	255 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	256
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	257 void PyThread__exit_prog(int status)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	258 {
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	259 do_PyThread_exit_prog(status, 1);
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	260 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	261 #endif /* NO_EXIT_PROG */
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	262
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	263 /*
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	264 * Lock support. It has too be implemented as semaphores.
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	265 * I [Dag] tried to implement it with mutex but I could find a way to
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	266 * tell whether a thread already own the lock or not.
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	267 */
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	268 PyThread_type_lock PyThread_allocate_lock(void)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	269 {
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	270 PNRMUTEX aLock;
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	271
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	272 dprintf(("PyThread_allocate_lock called\n"));
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	273 if (!initialized)
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	274 PyThread_init_thread();
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	275
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	276 aLock = AllocNonRecursiveMutex() ;
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	277
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 13138 diff changeset	278 dprintf(("%ld: PyThread_allocate_lock() -> %p\n", PyThread_get_thread_ident(), aLock));
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	279
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	280 return (PyThread_type_lock) aLock;
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	281 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	282
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	283 void PyThread_free_lock(PyThread_type_lock aLock)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	284 {
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 13138 diff changeset	285 dprintf(("%ld: PyThread_free_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	286
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	287 FreeNonRecursiveMutex(aLock) ;
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	288 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	289
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	290 /*
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	291 * Return 1 on success if the lock was acquired
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	292 *
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	293 * and 0 if the lock was not acquired. This means a 0 is returned
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	294 * if the lock has already been acquired by this thread!
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	295 */
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	296 int PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	297 {
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	298 int success ;
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	299
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 13138 diff changeset	300 dprintf(("%ld: PyThread_acquire_lock(%p, %d) called\n", PyThread_get_thread_ident(),aLock, waitflag));
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	301
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	302 success = aLock && EnterNonRecursiveMutex((PNRMUTEX) aLock, (waitflag == 1 ? INFINITE : 0)) == WAIT_OBJECT_0 ;
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	303
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 13138 diff changeset	304 dprintf(("%ld: PyThread_acquire_lock(%p, %d) -> %d\n", PyThread_get_thread_ident(),aLock, waitflag, success));
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	305
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	306 return success;
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	307 }
1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	308
9679 877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py* Guido van Rossum <guido@python.org> parents: 6029 diff changeset	309 void PyThread_release_lock(PyThread_type_lock aLock)
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	310 {
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 13138 diff changeset	311 dprintf(("%ld: PyThread_release_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	312
12584 cde4da18c4fa Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru, Guido van Rossum <guido@python.org> parents: 11673 diff changeset	313 if (!(aLock && LeaveNonRecursiveMutex((PNRMUTEX) aLock)))
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 13138 diff changeset	314 dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n", PyThread_get_thread_ident(), aLock, GetLastError()));
2152 1a52351a00b2 nt thread support Guido van Rossum <guido@python.org> parents: diff changeset	315 }

Mercurial > cpython-lru_cache-weakref

annotate Python/thread_nt.h @ 68237:364638d6434d 2.3