mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-02-17 13:10:12 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/* This testcase is part of GDB, the GNU debugger.
|
|
|
|
Copyright 2018-2024 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/>. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <pthread.h>
|
|
|
|
/* This defines the number of threads to spawn. */
|
|
#define THREADCOUNT 4
|
|
|
|
/* Global barrier type to control synchronization between threads. */
|
|
static pthread_barrier_t print_barrier;
|
|
|
|
/* Define global thread identifiers. */
|
|
static pthread_t threads[THREADCOUNT];
|
|
|
|
/* Hold values for each thread at the index supplied to the thread
|
|
on creation. */
|
|
static int thread_ids[THREADCOUNT];
|
|
|
|
/* Find the value associated with the calling thread. */
|
|
static int
|
|
get_value ()
|
|
{
|
|
for (int tid = 0; tid < THREADCOUNT; ++tid)
|
|
{
|
|
if (pthread_equal (threads[tid], pthread_self ()))
|
|
return thread_ids[tid];
|
|
}
|
|
/* Value for the main thread. */
|
|
return 1;
|
|
}
|
|
|
|
/* Return the nth Fibonacci number. */
|
|
static unsigned long
|
|
fast_fib (unsigned int n)
|
|
{
|
|
int a = 0;
|
|
int b = 1;
|
|
int t;
|
|
for (unsigned int i = 0; i < n; ++i)
|
|
{
|
|
t = b;
|
|
b = a + b;
|
|
a = t;
|
|
}
|
|
return a;
|
|
}
|
|
|
|
/* Encapsulate the synchronization of the threads. Perform a barrier before
|
|
and after the computation. */
|
|
static void *
|
|
thread_function (void *args)
|
|
{
|
|
int tid = *((int *) args);
|
|
int status = pthread_barrier_wait (&print_barrier);
|
|
if (status == PTHREAD_BARRIER_SERIAL_THREAD)
|
|
printf ("All threads entering compute region\n");
|
|
|
|
unsigned long result = fast_fib (100); /* testmarker01 */
|
|
status = pthread_barrier_wait (&print_barrier);
|
|
if (status == PTHREAD_BARRIER_SERIAL_THREAD)
|
|
printf ("All threads outputting results\n");
|
|
|
|
pthread_barrier_wait (&print_barrier);
|
|
printf ("Thread %d Result: %lu\n", tid, result);
|
|
}
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
int err = pthread_barrier_init (&print_barrier, NULL, THREADCOUNT);
|
|
if (err != 0)
|
|
{
|
|
fprintf (stderr, "Barrier creation failed\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
/* Create the worker threads (main). */
|
|
printf ("Spawning worker threads\n");
|
|
for (int tid = 0; tid < THREADCOUNT; ++tid)
|
|
{
|
|
/* Add 2 so the value maps to the debugger's thread identifiers. */
|
|
thread_ids[tid] = tid + 2; /* prethreadcreationmarker */
|
|
err = pthread_create (&threads[tid], NULL, thread_function,
|
|
(void *) &thread_ids[tid]);
|
|
if (err != 0)
|
|
{
|
|
fprintf (stderr, "Thread creation failed\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
/* Wait for the threads to complete then exit. */
|
|
for (int tid = 0; tid < THREADCOUNT; ++tid)
|
|
pthread_join (threads[tid], NULL);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|