projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| dc621c35 DE |
1 | /* This testcase is part of GDB, the GNU debugger. |
| 2 | ||
| 618f726f | 3 | Copyright 2009-2016 Free Software Foundation, Inc. |
| dc621c35 DE |
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 | |
| 7 | the Free Software Foundation; either version 3 of the License, or | |
| 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 | |
| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 | ||
| 18 | Check that watchpoints get propagated to all existing threads when the | |
| 19 | watchpoint is created. | |
| 20 | */ | |
| 21 | ||
| 22 | #include <stdio.h> | |
| 23 | #include <unistd.h> | |
| 24 | #include <stdlib.h> | |
| 25 | #include <stdint.h> | |
| 26 | #include <pthread.h> | |
| 27 | ||
| 28 | #ifndef NR_THREADS | |
| 29 | #define NR_THREADS 4 | |
| 30 | #endif | |
| 31 | ||
| 32 | #ifndef X_INCR_COUNT | |
| 33 | #define X_INCR_COUNT 10 | |
| 34 | #endif | |
| 35 | ||
| 36 | void *thread_function (void *arg); /* Function executed by each thread. */ | |
| 37 | ||
| 38 | pthread_mutex_t x_mutex; | |
| 39 | int x; | |
| 40 | ||
| 41 | /* Used to hold threads back until watchthreads2.exp is ready. */ | |
| 42 | int test_ready = 0; | |
| 43 | ||
| 44 | int | |
| 45 | main () | |
| 46 | { | |
| 47 | int res; | |
| 48 | pthread_t threads[NR_THREADS]; | |
| 49 | int i; | |
| 50 | ||
| 51 | pthread_mutex_init (&x_mutex, NULL); | |
| 52 | ||
| 53 | for (i = 0; i < NR_THREADS; ++i) | |
| 54 | { | |
| 55 | res = pthread_create (&threads[i], | |
| 56 | NULL, | |
| 57 | thread_function, | |
| 58 | (void *) (intptr_t) i); | |
| 59 | if (res != 0) | |
| 60 | { | |
| 61 | fprintf (stderr, "error in thread %d create\n", i); | |
| 62 | abort (); | |
| 63 | } | |
| 64 | } | |
| 65 | ||
| 66 | for (i = 0; i < NR_THREADS; ++i) | |
| 67 | { | |
| 68 | res = pthread_join (threads[i], NULL); | |
| 69 | if (res != 0) | |
| 70 | { | |
| 71 | fprintf (stderr, "error in thread %d join\n", i); | |
| 72 | abort (); | |
| 73 | } | |
| 74 | } | |
| 75 | ||
| 76 | exit (EXIT_SUCCESS); | |
| 77 | } | |
| 78 | ||
| 79 | /* Easy place for a breakpoint. | |
| 80 | watchthreads2.exp uses this to track when all threads are running | |
| 81 | instead of, for example, the program keeping track | |
| 82 | because we don't need the program to know when all threads are running, | |
| 83 | instead we need gdb to know when all threads are running. | |
| 84 | There is a delay between when a thread has started and when the thread | |
| 85 | has been registered with gdb. */ | |
| 86 | ||
| 87 | void | |
| 88 | thread_started () | |
| 89 | { | |
| 90 | } | |
| 91 | ||
| 92 | void * | |
| 93 | thread_function (void *arg) | |
| 94 | { | |
| 95 | int i; | |
| 96 | ||
| 97 | thread_started (); | |
| 98 | ||
| 99 | /* Don't start incrementing X until watchthreads2.exp is ready. */ | |
| 100 | while (! test_ready) | |
| 101 | usleep (1); | |
| 102 | ||
| 103 | for (i = 0; i < X_INCR_COUNT; ++i) | |
| 104 | { | |
| 105 | pthread_mutex_lock (&x_mutex); | |
| 106 | /* For debugging. */ | |
| 107 | printf ("Thread %ld changing x %d -> %d\n", (long) arg, x, x + 1); | |
| 108 | /* The call to usleep is so that when the watchpoint triggers, | |
| 109 | the pc is still on the same line. */ | |
| 110 | ++x; usleep (1); /* X increment. */ | |
| 111 | pthread_mutex_unlock (&x_mutex); | |
| 112 | } | |
| 113 | ||
| 114 | pthread_exit (NULL); | |
| 115 | } |