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[perl5.git] / win32 / win32thread.c
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1#include "EXTERN.h"
2#include "perl.h"
d55594ae 3
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4#if defined(PERL_OBJECT)
5#define NO_XSLOCKS
6extern CPerlObj* pPerl;
7#include "XSUB.h"
8#endif
9
c69f112c 10#ifdef USE_DECLSPEC_THREAD
61c8b479 11__declspec(thread) struct perl_thread *Perl_current_thread = NULL;
c69f112c 12#endif
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13
14void
61c8b479 15Perl_setTHR(struct perl_thread *t)
9811a7d7 16{
4c36ecb7 17#ifdef USE_THREADS
c69f112c 18#ifdef USE_DECLSPEC_THREAD
0fefa03b 19 Perl_current_thread = t;
c69f112c 20#else
6b88bc9c 21 TlsSetValue(PL_thr_key,t);
c69f112c 22#endif
4c36ecb7 23#endif
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24}
25
61c8b479 26struct perl_thread *
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27Perl_getTHR(void)
28{
4c36ecb7 29#ifdef USE_THREADS
c69f112c 30#ifdef USE_DECLSPEC_THREAD
0fefa03b 31 return Perl_current_thread;
c69f112c 32#else
6b88bc9c 33 return (struct perl_thread *) TlsGetValue(PL_thr_key);
c69f112c 34#endif
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35#else
36 return NULL;
37#endif
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38}
39
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40void
41Perl_alloc_thread_key(void)
42{
43#ifdef USE_THREADS
44 static int key_allocated = 0;
45 if (!key_allocated) {
6b88bc9c 46 if ((PL_thr_key = TlsAlloc()) == TLS_OUT_OF_INDEXES)
4f63d024 47 Perl_croak_nocontext("panic: TlsAlloc");
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48 key_allocated = 1;
49 }
50#endif
51}
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52
53void
22239a37 54Perl_init_thread_intern(struct perl_thread *athr)
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55{
56#ifdef USE_THREADS
57#ifndef USE_DECLSPEC_THREAD
58
59 /*
60 * Initialize port-specific per-thread data in thr->i
61 * as only things we have there are just static areas for
62 * return values we don't _need_ to do anything but
63 * this is good practice:
64 */
22239a37 65 memset(&athr->i,0,sizeof(athr->i));
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66
67#endif
68#endif
69}
70
71void
52e1cb5e 72Perl_set_thread_self(struct perl_thread *thr)
ea0efc06 73{
d55594ae 74#ifdef USE_THREADS
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75 /* Set thr->self. GetCurrentThread() retrurns a pseudo handle, need
76 this to convert it into a handle another thread can use.
d55594ae 77 */
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78 DuplicateHandle(GetCurrentProcess(),
79 GetCurrentThread(),
80 GetCurrentProcess(),
46930d8f 81 &thr->self,
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82 0,
83 FALSE,
84 DUPLICATE_SAME_ACCESS);
d55594ae 85#endif
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86}
87
d55594ae 88#ifdef USE_THREADS
ea0efc06 89int
52e1cb5e 90Perl_thread_create(struct perl_thread *thr, thread_func_t *fn)
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91{
92 DWORD junk;
2d7a9237 93 unsigned long th;
ea0efc06 94
bf49b057 95 DEBUG_S(PerlIO_printf(Perl_debug_log,
d55594ae 96 "%p: create OS thread\n", thr));
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97#ifdef USE_RTL_THREAD_API
98 /* See comment about USE_RTL_THREAD_API in win32thread.h */
99#if defined(__BORLANDC__)
100 th = _beginthreadNT(fn, /* start address */
101 0, /* stack size */
102 (void *)thr, /* parameters */
103 (void *)NULL, /* security attrib */
104 0, /* creation flags */
105 (unsigned long *)&junk); /* tid */
106 if (th == (unsigned long)-1)
107 th = 0;
108#elif defined(_MSC_VER_)
109 th = _beginthreadex((void *)NULL, /* security attrib */
110 0, /* stack size */
111 fn, /* start address */
112 (void*)thr, /* parameters */
113 0, /* creation flags */
114 (unsigned *)&junk); /* tid */
115#else /* compilers using CRTDLL.DLL only have _beginthread() */
116 th = _beginthread(fn, /* start address */
117 0, /* stack size */
118 (void*)thr); /* parameters */
119 if (th == (unsigned long)-1)
120 th = 0;
121#endif
122 thr->self = (HANDLE)th;
123#else /* !USE_RTL_THREAD_API */
46930d8f 124 thr->self = CreateThread(NULL, 0, fn, (void*)thr, 0, &junk);
2d7a9237 125#endif /* !USE_RTL_THREAD_API */
bf49b057 126 DEBUG_S(PerlIO_printf(Perl_debug_log,
d55594ae 127 "%p: OS thread = %p, id=%ld\n", thr, thr->self, junk));
46930d8f 128 return thr->self ? 0 : -1;
ea0efc06 129}
d55594ae 130#endif
22239a37 131