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| 1113 | palkovsky | 1 | /* |
| 2 | * Copyright (C) 2006 Ondrej Palkovsky |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #ifndef __LIBC__PSTHREAD_H__ |
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| 30 | #define __LIBC__PSTHREAD_H__ |
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| 31 | |||
| 32 | #include <libarch/psthread.h> |
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| 33 | #include <libadt/list.h> |
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| 34 | |||
| 35 | #ifndef context_set |
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| 36 | #define context_set(c, _pc, stack, size, ptls) \ |
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| 37 | (c)->pc = (sysarg_t) (_pc); \ |
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| 38 | (c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \ |
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| 39 | (c)->tls = (sysarg_t) (ptls); |
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| 40 | #endif /* context_set */ |
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| 41 | |||
| 42 | typedef sysarg_t pstid_t; |
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| 43 | |||
| 44 | struct psthread_data { |
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| 45 | struct psthread_data *self; /* IA32,AMD64 needs to get self address */ |
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| 46 | |||
| 47 | link_t list; |
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| 48 | context_t ctx; |
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| 49 | void *stack; |
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| 50 | void *arg; |
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| 51 | int (*func)(void *); |
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| 52 | |||
| 53 | struct psthread_data *waiter; |
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| 54 | int finished; |
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| 55 | int retval; |
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| 56 | int flags; |
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| 57 | }; |
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| 58 | typedef struct psthread_data psthread_data_t; |
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| 59 | |||
| 60 | extern int context_save(context_t *c); |
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| 61 | extern void context_restore(context_t *c) __attribute__ ((noreturn)); |
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| 62 | |||
| 63 | pstid_t psthread_create(int (*func)(void *), void *arg); |
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| 64 | int ps_preempt(void); |
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| 65 | int ps_join(pstid_t psthrid); |
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| 66 | |||
| 67 | #endif |