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1 | /* Time-stamp: <01/08/01 21:00:29 keuchel@w2k> */ |
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2 | |
3 | #include "EXTERN.h" |
4 | #include "perl.h" |
5 | |
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6 | #ifdef USE_DECLSPEC_THREAD |
7 | __declspec(thread) void *PL_current_context = NULL; |
8 | #endif |
9 | |
10 | void |
11 | Perl_set_context(void *t) |
12 | { |
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13 | #if defined(USE_5005THREADS) || defined(USE_ITHREADS) |
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14 | # ifdef USE_DECLSPEC_THREAD |
15 | Perl_current_context = t; |
16 | # else |
17 | DWORD err = GetLastError(); |
18 | TlsSetValue(PL_thr_key,t); |
19 | SetLastError(err); |
20 | # endif |
21 | #endif |
22 | } |
23 | |
24 | void * |
25 | Perl_get_context(void) |
26 | { |
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27 | #if defined(USE_5005THREADS) || defined(USE_ITHREADS) |
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28 | # ifdef USE_DECLSPEC_THREAD |
29 | return Perl_current_context; |
30 | # else |
31 | DWORD err = GetLastError(); |
32 | void *result = TlsGetValue(PL_thr_key); |
33 | SetLastError(err); |
34 | return result; |
35 | # endif |
36 | #else |
37 | return NULL; |
38 | #endif |
39 | } |
40 | |
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41 | #ifdef USE_5005THREADS |
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42 | void |
43 | Perl_init_thread_intern(struct perl_thread *athr) |
44 | { |
45 | #ifndef USE_DECLSPEC_THREAD |
46 | |
47 | /* |
48 | * Initialize port-specific per-thread data in thr->i |
49 | * as only things we have there are just static areas for |
50 | * return values we don't _need_ to do anything but |
51 | * this is good practice: |
52 | */ |
53 | memset(&athr->i,0,sizeof(athr->i)); |
54 | |
55 | #endif |
56 | } |
57 | |
58 | void |
59 | Perl_set_thread_self(struct perl_thread *thr) |
60 | { |
61 | /* Set thr->self. GetCurrentThread() retrurns a pseudo handle, need |
62 | this to convert it into a handle another thread can use. |
63 | */ |
64 | DuplicateHandle(GetCurrentProcess(), |
65 | GetCurrentThread(), |
66 | GetCurrentProcess(), |
67 | &thr->self, |
68 | 0, |
69 | FALSE, |
70 | DUPLICATE_SAME_ACCESS); |
71 | } |
72 | |
73 | int |
74 | Perl_thread_create(struct perl_thread *thr, thread_func_t *fn) |
75 | { |
76 | DWORD junk; |
77 | unsigned long th; |
78 | |
79 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
80 | "%p: create OS thread\n", thr)); |
81 | #ifdef USE_RTL_THREAD_API |
82 | /* See comment about USE_RTL_THREAD_API in win32thread.h */ |
83 | #if defined(__BORLANDC__) |
84 | th = _beginthreadNT(fn, /* start address */ |
85 | 0, /* stack size */ |
86 | (void *)thr, /* parameters */ |
87 | (void *)NULL, /* security attrib */ |
88 | 0, /* creation flags */ |
89 | (unsigned long *)&junk); /* tid */ |
90 | if (th == (unsigned long)-1) |
91 | th = 0; |
92 | #elif defined(_MSC_VER_) |
93 | th = _beginthreadex((void *)NULL, /* security attrib */ |
94 | 0, /* stack size */ |
95 | fn, /* start address */ |
96 | (void*)thr, /* parameters */ |
97 | 0, /* creation flags */ |
98 | (unsigned *)&junk); /* tid */ |
99 | #else /* compilers using CRTDLL.DLL only have _beginthread() */ |
100 | th = _beginthread(fn, /* start address */ |
101 | 0, /* stack size */ |
102 | (void*)thr); /* parameters */ |
103 | if (th == (unsigned long)-1) |
104 | th = 0; |
105 | #endif |
106 | thr->self = (HANDLE)th; |
107 | #else /* !USE_RTL_THREAD_API */ |
108 | thr->self = CreateThread(NULL, 0, fn, (void*)thr, 0, &junk); |
109 | #endif /* !USE_RTL_THREAD_API */ |
110 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
111 | "%p: OS thread = %p, id=%ld\n", thr, thr->self, junk)); |
112 | return thr->self ? 0 : -1; |
113 | } |
114 | #endif |
115 | |