e58b0e63bb
* gdbthread.h (struct thread_info): New `pending_follow' field. * thread.c (new_thread): New function. (add_thread_silent): Use it. * breakpoint.c (internal_breakpoint_number): New global, moved from inside... (create_internal_breakpoint): ... this. (clone_momentary_breakpoint): New. * breakpoint.h (clone_momentary_breakpoint): Declare. * infrun.c (nullify_last_target_wait_ptid): Move declaration higher. (pending_follow): Delete. (follow_fork): Handle pending follow fork event here. Moved the preserving of thread stepping state here. (resume): Don't handle pending follow fork events here. Only install the inferior's terminal modes if we're about to resume it. (proceed): Handle possible pending follow fork events here. (init_wait_for_inferior): No need to clear pending_follow anymore, it's gone. (handle_inferior_event): Adjust to per-thread `pending_follow'. Call `follow_fork' to handle following the fork. If the follow-fork is cancelled, stop stepping. * linux-nat.c (linux_child_follow_fork): Adjust to per-thread `pending_follow' events. Remove code that handled preserving the thread stepping state. * inf-ptrace.c (inf_ptrace_follow_fork): Ditto. * inf-ttrace.c (inf_ttrace_follow_fork): Ditto. gdb/testsuite/ * gdb.threads/fork-thread-pending.c: New. * gdb.threads/fork-thread-pending.exp: New.
109 lines
2.2 KiB
C
109 lines
2.2 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2008, 2009 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <pthread.h>
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#include <assert.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#define NUMTHREADS 10
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volatile int done = 0;
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static void *
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start (void *arg)
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{
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while (!done)
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usleep (100);
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assert (0);
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return arg;
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}
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void *
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thread_function (void *arg)
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{
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int x = * (int *) arg;
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printf ("Thread <%d> executing\n", x);
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while (!done)
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usleep (100);
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return NULL;
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}
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void *
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thread_forker (void *arg)
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{
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int x = * (int *) arg;
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pid_t pid;
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int rv;
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int i;
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pthread_t thread;
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printf ("Thread forker <%d> executing\n", x);
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switch ((pid = fork ()))
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{
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case -1:
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assert (0);
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default:
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wait (&rv);
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done = 1;
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break;
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case 0:
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i = pthread_create (&thread, NULL, start, NULL);
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assert (i == 0);
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i = pthread_join (thread, NULL);
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assert (i == 0);
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assert (0);
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}
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return NULL;
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}
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int
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main (void)
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{
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pthread_t threads[NUMTHREADS];
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int args[NUMTHREADS];
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int i, j;
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/* Create a few threads that do mostly nothing, and then one that
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forks. */
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for (j = 0; j < NUMTHREADS - 1; ++j)
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{
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args[j] = j;
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pthread_create (&threads[j], NULL, thread_function, &args[j]);
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}
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args[j] = j;
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pthread_create (&threads[j], NULL, thread_forker, &args[j]);
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for (j = 0; j < NUMTHREADS; ++j)
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{
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pthread_join (threads[j], NULL);
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}
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return 0;
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}
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