1 | /* fakethr.h
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2 | *
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3 | * Copyright (C) 1999, by Larry Wall and others
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4 | *
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5 | * You may distribute under the terms of either the GNU General Public
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6 | * License or the Artistic License, as specified in the README file.
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7 | *
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8 | */
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9 |
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10 | typedef int perl_mutex;
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11 | typedef int perl_key;
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12 |
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13 | typedef struct perl_thread *perl_os_thread;
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14 | /* With fake threads, thr is global(ish) so we don't need dTHR */
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15 | #define dTHR extern int errno
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16 |
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17 | struct perl_wait_queue {
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18 | struct perl_thread * thread;
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19 | struct perl_wait_queue * next;
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20 | };
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21 | typedef struct perl_wait_queue *perl_cond;
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22 |
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23 | /* Ask thread.h to include our per-thread extras */
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24 | #define HAVE_THREAD_INTERN
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25 | struct thread_intern {
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26 | perl_os_thread next_run, prev_run; /* Linked list of runnable threads */
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27 | perl_cond wait_queue; /* Wait queue that we are waiting on */
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28 | IV private; /* Holds data across time slices */
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29 | I32 savemark; /* Holds MARK for thread join values */
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30 | };
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31 |
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32 | #define init_thread_intern(t) \
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33 | STMT_START { \
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34 | t->self = (t); \
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35 | (t)->i.next_run = (t)->i.prev_run = (t); \
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36 | (t)->i.wait_queue = 0; \
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37 | (t)->i.private = 0; \
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38 | } STMT_END
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39 |
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40 | /*
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41 | * Note that SCHEDULE() is only callable from pp code (which
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42 | * must be expecting to be restarted). We'll have to do
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43 | * something a bit different for XS code.
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44 | */
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45 |
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46 | #define SCHEDULE() return schedule(), PL_op
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47 |
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48 | #define MUTEX_LOCK(m)
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49 | #define MUTEX_UNLOCK(m)
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50 | #define MUTEX_INIT(m)
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51 | #define MUTEX_DESTROY(m)
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52 | #define COND_INIT(c) perl_cond_init(c)
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53 | #define COND_SIGNAL(c) perl_cond_signal(c)
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54 | #define COND_BROADCAST(c) perl_cond_broadcast(c)
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55 | #define COND_WAIT(c, m) \
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56 | STMT_START { \
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57 | perl_cond_wait(c); \
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58 | SCHEDULE(); \
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59 | } STMT_END
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60 | #define COND_DESTROY(c)
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61 |
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62 | #define THREAD_CREATE(t, f) f((t))
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63 | #define THREAD_POST_CREATE(t) NOOP
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64 |
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65 | #define YIELD NOOP
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