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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
82893676 MG |
3 | #ifndef SCM_ASYNC_H |
4 | #define SCM_ASYNC_H | |
0527e687 | 5 | |
102dbb6f | 6 | /* Copyright (C) 1995,1996,1997,1998,2000,2001, 2002, 2004, 2005, 2006, 2008 Free Software Foundation, Inc. |
843e4e9d | 7 | * |
73be1d9e | 8 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
9 | * modify it under the terms of the GNU Lesser General Public License |
10 | * as published by the Free Software Foundation; either version 3 of | |
11 | * the License, or (at your option) any later version. | |
843e4e9d | 12 | * |
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13 | * This library is distributed in the hope that it will be useful, but |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
16 | * Lesser General Public License for more details. | |
843e4e9d | 17 | * |
73be1d9e MV |
18 | * You should have received a copy of the GNU Lesser General Public |
19 | * License along with this library; if not, write to the Free Software | |
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20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
21 | * 02110-1301 USA | |
73be1d9e | 22 | */ |
d3a6bc94 | 23 | |
0f2d19dd JB |
24 | \f |
25 | ||
b4309c3c | 26 | #include "libguile/__scm.h" |
5b900ecf | 27 | #include "libguile/root.h" |
9de87eea | 28 | #include "libguile/threads.h" |
0f2d19dd | 29 | |
0f2d19dd JB |
30 | \f |
31 | ||
4c908f2c | 32 | #define scm_mask_ints (SCM_I_CURRENT_THREAD->block_asyncs != 0) |
939794ce | 33 | |
0f2d19dd | 34 | \f |
0f2d19dd | 35 | |
e4e93373 MV |
36 | SCM_API void scm_async_click (void); |
37 | SCM_API void scm_switch (void); | |
38 | SCM_API SCM scm_async (SCM thunk); | |
e4e93373 MV |
39 | SCM_API SCM scm_async_mark (SCM a); |
40 | SCM_API SCM scm_system_async_mark (SCM a); | |
61c95a49 | 41 | SCM_API SCM scm_system_async_mark_for_thread (SCM a, SCM thread); |
102dbb6f LC |
42 | SCM_INTERNAL void scm_i_queue_async_cell (SCM cell, scm_i_thread *); |
43 | SCM_INTERNAL int scm_i_setup_sleep (scm_i_thread *, | |
44 | SCM obj, scm_i_pthread_mutex_t *m, | |
45 | int fd); | |
46 | SCM_INTERNAL void scm_i_reset_sleep (scm_i_thread *); | |
e4e93373 MV |
47 | SCM_API SCM scm_run_asyncs (SCM list_of_a); |
48 | SCM_API SCM scm_noop (SCM args); | |
e292f7aa MV |
49 | SCM_API SCM scm_call_with_blocked_asyncs (SCM proc); |
50 | SCM_API SCM scm_call_with_unblocked_asyncs (SCM proc); | |
51 | void *scm_c_call_with_blocked_asyncs (void *(*p) (void *d), void *d); | |
52 | void *scm_c_call_with_unblocked_asyncs (void *(*p) (void *d), void *d); | |
661ae7ab MV |
53 | void scm_dynwind_block_asyncs (void); |
54 | void scm_dynwind_unblock_asyncs (void); | |
9de87eea | 55 | |
a4d106c7 MV |
56 | /* Critical sections */ |
57 | ||
58 | /* XXX - every critical section needs to be examined whether the | |
59 | requirements for SCM_CRITICAL_SECTION_START/END are fulfilled. See | |
60 | the manual. | |
61 | */ | |
62 | ||
63 | /* Defined in threads.c. scm_i_critical_section_level is only used | |
64 | for error checking and will go away eventually. */ | |
65 | extern scm_i_pthread_mutex_t scm_i_critical_section_mutex; | |
66 | extern int scm_i_critical_section_level; | |
67 | ||
68 | #define SCM_CRITICAL_SECTION_START \ | |
69 | do { \ | |
70 | scm_i_pthread_mutex_lock (&scm_i_critical_section_mutex);\ | |
71 | SCM_I_CURRENT_THREAD->block_asyncs++; \ | |
72 | scm_i_critical_section_level++; \ | |
73 | } while (0) | |
74 | #define SCM_CRITICAL_SECTION_END \ | |
75 | do { \ | |
76 | scm_i_critical_section_level--; \ | |
77 | SCM_I_CURRENT_THREAD->block_asyncs--; \ | |
78 | scm_i_pthread_mutex_unlock (&scm_i_critical_section_mutex); \ | |
79 | scm_async_click (); \ | |
80 | } while (0) | |
81 | ||
102dbb6f | 82 | SCM_INTERNAL void scm_init_async (void); |
e292f7aa | 83 | |
e71a8bf2 | 84 | #if (SCM_ENABLE_DEPRECATED == 1) |
e292f7aa | 85 | |
100ae50d | 86 | SCM_API SCM scm_system_async (SCM thunk); |
e4e93373 MV |
87 | SCM_API SCM scm_unmask_signals (void); |
88 | SCM_API SCM scm_mask_signals (void); | |
e292f7aa MV |
89 | |
90 | #endif | |
0f2d19dd | 91 | |
82893676 | 92 | #endif /* SCM_ASYNC_H */ |
89e00824 ML |
93 | |
94 | /* | |
95 | Local Variables: | |
96 | c-file-style: "gnu" | |
97 | End: | |
98 | */ |