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a9640423 MC |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
32d0add0 | 3 | Copyright 2002-2015 Free Software Foundation, Inc. |
a9640423 MC |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 7 | the Free Software Foundation; either version 3 of the License, or |
a9640423 MC |
8 | (at your option) any later version. |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
a9640423 | 17 | |
0312286c DJ |
18 | #include <stdio.h> |
19 | #include <unistd.h> | |
20 | #include <stdlib.h> | |
21 | #include <pthread.h> | |
22 | ||
23 | void *thread_function(void *arg); /* Pointer to function executed by each thread */ | |
24 | ||
18ecae38 | 25 | #define NUM 1 |
0312286c | 26 | |
322b3f65 | 27 | unsigned int args[NUM+1]; |
0312286c DJ |
28 | |
29 | int main() { | |
30 | int res; | |
31 | pthread_t threads[NUM]; | |
32 | void *thread_result; | |
5dd55bdd | 33 | long i; |
0312286c | 34 | |
18ecae38 | 35 | for (i = 1; i <= NUM; i++) |
0312286c DJ |
36 | { |
37 | args[i] = 1; | |
e2009e98 | 38 | res = pthread_create(&threads[i - 1], |
5dd55bdd EZ |
39 | NULL, |
40 | thread_function, | |
41 | (void *) i); | |
0312286c DJ |
42 | } |
43 | ||
44 | /* schedlock.exp: last thread start. */ | |
18ecae38 DJ |
45 | args[0] = 1; |
46 | thread_function ((void *) 0); | |
0312286c DJ |
47 | |
48 | exit(EXIT_SUCCESS); | |
49 | } | |
50 | ||
35420406 PA |
51 | void some_function (void) { |
52 | /* Sleep a bit to give the other threads a chance to run, if not | |
53 | locked. This also ensure that even if the compiler optimizes out | |
54 | or inlines some_function, there's still be some function that | |
55 | needs to be stepped over. */ | |
56 | usleep (1); | |
57 | } | |
58 | ||
59 | /* When testing "next", this is set to have the loop call | |
60 | some_function, which GDB should step over. When testing "step", | |
61 | that would step into the function, which is not what we want. */ | |
62 | volatile int call_function = 0; | |
63 | ||
64 | /* Call some_function if CALL_FUNCTION is set. This is wrapped in a | |
65 | macro so that it's a single source line in the main loop. */ | |
66 | #define MAYBE_CALL_SOME_FUNCTION() \ | |
67 | do \ | |
68 | { \ | |
69 | if (call_function) \ | |
70 | some_function (); \ | |
71 | } while (0) | |
72 | ||
0312286c | 73 | void *thread_function(void *arg) { |
5dd55bdd | 74 | int my_number = (long) arg; |
e5b25496 | 75 | int *myp = (int *) &args[my_number]; |
0312286c DJ |
76 | |
77 | /* Don't run forever. Run just short of it :) */ | |
78 | while (*myp > 0) | |
79 | { | |
80 | /* schedlock.exp: main loop. */ | |
35420406 | 81 | MAYBE_CALL_SOME_FUNCTION(); (*myp) ++; |
0312286c DJ |
82 | } |
83 | ||
84 | pthread_exit(NULL); | |
85 | } | |
86 |