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Diffstat (limited to 'lib/libkse/test/guard_b.c')
| -rw-r--r-- | lib/libkse/test/guard_b.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/lib/libkse/test/guard_b.c b/lib/libkse/test/guard_b.c deleted file mode 100644 index 2e27031..0000000 --- a/lib/libkse/test/guard_b.c +++ /dev/null @@ -1,152 +0,0 @@ -/* - * Copyright (C) 2001 Jason Evans <jasone@freebsd.org>. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice(s), this list of conditions and the following disclaimer - * unmodified other than the allowable addition of one or more - * copyright notices. - * 2. Redistributions in binary form must reproduce the above copyright - * notice(s), this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE - * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, - * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * $FreeBSD$ - * - * Test thread stack guard functionality. - */ - -#include <assert.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <limits.h> -#include <pthread.h> - -#define FRAME_SIZE 1024 -#define FRAME_OVERHEAD 40 - -struct args -{ - void *top; /* Top of thread's initial stack frame. */ - int cur; /* Recursion depth. */ - int max; /* Maximum recursion depth. */ -}; - -void * -recurse(void *args) -{ - int top; - struct args *parms = (struct args *)args; - char filler[FRAME_SIZE - FRAME_OVERHEAD]; - - /* Touch the memory in this stack frame. */ - top = 0xa5; - memset(filler, 0xa5, sizeof(filler)); - - if (parms->top == NULL) { - /* Initial stack frame. */ - parms->top = (void*)⊤ - } - - /* - * Make sure frame size is what we expect. Getting this right involves - * hand tweaking, so just print a warning rather than aborting. - */ - if (parms->top - (void *)&top != FRAME_SIZE * parms->cur) { - fprintf(stderr, - "Stack size (%ld) != expected (%ld), frame %ld\n", - (long)parms->top - (long)&top, - (long)(FRAME_SIZE * parms->cur), (long)parms->cur); - } - - parms->cur++; - if (parms->cur < parms->max) - recurse(args); - - return NULL; -} - - -int -main(int argc, char **argv) -{ - size_t def_stacksize, def_guardsize; - size_t stacksize, guardsize; - pthread_t thread; - pthread_attr_t attr; - struct args args; - - if (argc != 3) { - fprintf(stderr, "usage: guard_b <stacksize> <guardsize>\n"); - exit(1); - } - fprintf(stderr, "Test begin\n"); - - stacksize = strtoul(argv[1], NULL, 10); - guardsize = strtoul(argv[2], NULL, 10); - - assert(pthread_attr_init(&attr) == 0); - /* - * Exercise the attribute APIs more thoroughly than is strictly - * necessary for the meat of this test program. - */ - assert(pthread_attr_getstacksize(&attr, &def_stacksize) == 0); - assert(pthread_attr_getguardsize(&attr, &def_guardsize) == 0); - if (def_stacksize != stacksize) { - assert(pthread_attr_setstacksize(&attr, stacksize) == 0); - assert(pthread_attr_getstacksize(&attr, &def_stacksize) == 0); - assert(def_stacksize == stacksize); - } - if (def_guardsize != guardsize) { - assert(pthread_attr_setguardsize(&attr, guardsize) == 0); - assert(pthread_attr_getguardsize(&attr, &def_guardsize) == 0); - assert(def_guardsize >= guardsize); - } - - /* - * Create a thread that will come just short of overflowing the thread - * stack. We need to leave a bit of breathing room in case the thread - * is context switched, and we also have to take care not to call any - * functions in the deepest stack frame. - */ - args.top = NULL; - args.cur = 0; - args.max = (stacksize / FRAME_SIZE) - 1; - fprintf(stderr, "No overflow:\n"); - assert(pthread_create(&thread, &attr, recurse, &args) == 0); - assert(pthread_join(thread, NULL) == 0); - - /* - * Create a thread that will barely of overflow the thread stack. This - * should cause a segfault. - */ - args.top = NULL; - args.cur = 0; - args.max = (stacksize / FRAME_SIZE) + 1; - fprintf(stderr, "Overflow:\n"); - assert(pthread_create(&thread, &attr, recurse, &args) == 0); - assert(pthread_join(thread, NULL) == 0); - - /* Not reached. */ - fprintf(stderr, "Unexpected success\n"); - abort(); - - return 0; -} |
