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Last change
on this file was 2, checked in by Dmitry A. Kuminov, 16 years ago |
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Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
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File size:
1.5 KB
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| 1 | /*
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| 2 | * $Id:$
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| 3 | * sproc version
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| 4 | * by Wolfram Gloger 2001, 2004, 2006
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| 5 | */
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| 6 |
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| 7 | #include <stdio.h>
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| 8 | #include <sys/wait.h>
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| 9 | #include <sys/types.h>
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| 10 | #include <sys/prctl.h>
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| 11 |
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| 12 | #ifndef STACKSIZE
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| 13 | #define STACKSIZE 32768
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| 14 | #endif
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| 15 |
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| 16 | struct thread_st {
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| 17 | char *sp; /* stack pointer, can be 0 */
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| 18 | void (*func)(struct thread_st* st); /* must be set by user */
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| 19 | int id;
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| 20 | int flags;
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| 21 | struct user_data u;
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| 22 | };
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| 23 |
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| 24 | static void
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| 25 | thread_init(void)
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| 26 | {
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| 27 | printf("Using sproc() threads.\n");
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| 28 | }
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| 29 |
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| 30 | static void
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| 31 | thread_wrapper(void *ptr, size_t stack_len)
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| 32 | {
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| 33 | struct thread_st *st = (struct thread_st*)ptr;
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| 34 |
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| 35 | /*printf("begin %p\n", st->sp);*/
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| 36 | st->func(st);
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| 37 | /*printf("end %p\n", st->sp);*/
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| 38 | }
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| 39 |
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| 40 | /* Create a thread. */
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| 41 | static int
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| 42 | thread_create(struct thread_st *st)
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| 43 | {
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| 44 | st->flags = 0;
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| 45 | if(!st->sp)
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| 46 | st->sp = malloc(STACKSIZE);
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| 47 | if(!st->sp) return -1;
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| 48 | st->id = sprocsp(thread_wrapper, PR_SALL, st, st->sp+STACKSIZE, STACKSIZE);
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| 49 | if(st->id < 0) {
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| 50 | return -1;
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| 51 | }
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| 52 | return 0;
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| 53 | }
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| 54 |
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| 55 | /* Wait for one of several subthreads to finish. */
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| 56 | static void
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| 57 | wait_for_thread(struct thread_st st[], int n_thr,
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| 58 | int (*end_thr)(struct thread_st*))
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| 59 | {
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| 60 | int i;
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| 61 | int id;
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| 62 |
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| 63 | int status = 0;
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| 64 | id = wait(&status);
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| 65 | if(status != 0) {
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| 66 | if(WIFSIGNALED(status))
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| 67 | printf("thread %id terminated by signal %d\n",
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| 68 | id, WTERMSIG(status));
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| 69 | else
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| 70 | printf("thread %id exited with status %d\n",
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| 71 | id, WEXITSTATUS(status));
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| 72 | }
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| 73 | for(i=0; i<n_thr; i++)
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| 74 | if(id == st[i].id) {
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| 75 | if(end_thr)
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| 76 | end_thr(&st[i]);
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| 77 | break;
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| 78 | }
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| 79 | }
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| 80 |
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| 81 | /*
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| 82 | * Local variables:
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| 83 | * tab-width: 4
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| 84 | * End:
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| 85 | */
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