1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/* This testcase is part of GDB, the GNU debugger.
Copyright 2010-2018 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Contributed by Ulrich Weigand <uweigand@de.ibm.com> */
#include <stdio.h>
#include <stdlib.h>
#include <libspe2.h>
#include <pthread.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
extern spe_program_handle_t fork_spu;
void *
spe_thread (void * arg)
{
int flags = 0;
unsigned int entry = SPE_DEFAULT_ENTRY;
spe_context_ptr_t *ctx = (spe_context_ptr_t *) arg;
spe_program_load (*ctx, &fork_spu);
spe_context_run (*ctx, &entry, flags, NULL, NULL, NULL);
pthread_exit (NULL);
}
int
main (void)
{
pthread_t pts;
spe_context_ptr_t ctx;
unsigned int value;
unsigned int pid;
ctx = spe_context_create (0, NULL);
pthread_create (&pts, NULL, &spe_thread, &ctx);
/* Wait until the SPU thread is running. */
spe_out_intr_mbox_read (ctx, &value, 1, SPE_MBOX_ALL_BLOCKING);
pid = fork ();
if (pid == 0)
{
/* This is the child. Just exit immediately. */
exit (0);
}
else
{
/* This is the parent. Wait for the child to exit. */
waitpid (pid, NULL, 0);
}
/* Tell SPU to continue. */
spe_in_mbox_write (ctx, &value, 1, SPE_MBOX_ALL_BLOCKING);
pthread_join (pts, NULL);
spe_context_destroy (ctx);
return 0;
}
|
GitWeb