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