libcoro/conftest.c

/*
 *  This file was taken from pth-1.40/aclocal.m4
 *  The original copyright is below.
 *
 *  GNU Pth - The GNU Portable Threads
 *  Copyright (c) 1999-2001 Ralf S. Engelschall <rse@engelschall.com>
 *
 *  This file is part of GNU Pth, a non-preemptive thread scheduling
 *  library which can be found at http://www.gnu.org/software/pth/.
 *
 *  This file is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This file 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this file; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 *  USA, or contact Marc Lehmann <schmorp@schmorp.de>.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(TEST_sigstack) || defined(TEST_sigaltstack)
#include <sys/types.h>
#include <signal.h>
#include <unistd.h>
#endif
#if defined(TEST_makecontext)
#include <ucontext.h>
#endif
union alltypes {
    long   l;
    double d;
    void  *vp;
    void (*fp)(void);
    char  *cp;
};
static volatile char *handler_addr = (char *)0xDEAD;
#if defined(TEST_sigstack) || defined(TEST_sigaltstack)
static volatile int handler_done = 0;
void handler(int sig)
{
    char garbage[1024];
    int i;
    auto int dummy;
    for (i = 0; i < 1024; i++)
        garbage[i] = 'X';
    handler_addr = (char *)&dummy;
    handler_done = 1;
    return;
}
#endif
#if defined(TEST_makecontext)
static ucontext_t uc_handler;
static ucontext_t uc_main;
void handler(void)
{
    char garbage[1024];
    int i;
    auto int dummy;
    for (i = 0; i < 1024; i++)
        garbage[i] = 'X';
    handler_addr = (char *)&dummy;
    swapcontext(&uc_handler, &uc_main);
    return;
}
#endif
int main(int argc, char *argv[])
{
    FILE *f;
    char *skaddr;
    char *skbuf;
    int sksize;
    char result[1024];
    int i;
    sksize = 32768;
    skbuf = (char *)malloc(sksize*2+2*sizeof(union alltypes));
    if (skbuf == NULL)
        exit(1);
    for (i = 0; i < sksize*2+2*sizeof(union alltypes); i++)
        skbuf[i] = 'A';
    skaddr = skbuf+sizeof(union alltypes);
#if defined(TEST_sigstack) || defined(TEST_sigaltstack)
    {
        struct sigaction sa;
#if defined(TEST_sigstack)
        struct sigstack ss;
#elif defined(TEST_sigaltstack) && defined(HAVE_STACK_T)
        stack_t ss;
#else
        struct sigaltstack ss;
#endif
#if defined(TEST_sigstack)
        ss.ss_sp      = (void *)(skaddr + sksize);
        ss.ss_onstack = 0;
        if (sigstack(&ss, NULL) < 0)
            exit(1);
#elif defined(TEST_sigaltstack)
        ss.ss_sp    = (void *)(skaddr + sksize);
        ss.ss_size  = sksize;
        ss.ss_flags = 0;
        if (sigaltstack(&ss, NULL) < 0)
            exit(1);
#endif
        memset((void *)&sa, 0, sizeof(struct sigaction));
        sa.sa_handler = handler;
        sa.sa_flags = SA_ONSTACK;
        sigemptyset(&sa.sa_mask);
        sigaction(SIGUSR1, &sa, NULL);
        kill(getpid(), SIGUSR1);
        while (!handler_done)
            /*nop*/;
    }
#endif
#if defined(TEST_makecontext)
    {
        if (getcontext(&uc_handler) != 0)
            exit(1);
        uc_handler.uc_link = NULL;
        uc_handler.uc_stack.ss_sp    = (void *)(skaddr + sksize);
        uc_handler.uc_stack.ss_size  = sksize;
        uc_handler.uc_stack.ss_flags = 0;
        makecontext(&uc_handler, handler, 1);
        swapcontext(&uc_main, &uc_handler);
    }
#endif
    if (handler_addr == (char *)0xDEAD)
        exit(1);
    if (handler_addr < skaddr+sksize) {
        /* stack was placed into lower area */
        if (*(skaddr+sksize) != 'A')
             sprintf(result, "(skaddr)+(sksize)-%d,(sksize)-%d",
                     sizeof(union alltypes), sizeof(union alltypes));
        else
             strcpy(result, "(skaddr)+(sksize),(sksize)");
    }
    else {
        /* stack was placed into higher area */
        if (*(skaddr+sksize*2) != 'A')
            sprintf(result, "(skaddr),(sksize)-%d", sizeof(union alltypes));
        else
            strcpy(result, "(skaddr),(sksize)");
    }
    printf("%s\n", result);
    exit(0);
}

Revision:	1.2
Committed:	Thu Mar 3 17:20:31 2005 UTC (20 years, 1 month ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_5, rel-4_91, rel-4_22, rel-4_21, rel-4_0, rel-4_3, rel-3_41, rel-5_151, rel-4_13, rel-4_11, rel-5_1, rel-5_0, rel-6_0, rel-6_5, rel-4_748, rel-3_55, rel-4_8, rel-4_9, rel-3_51, rel-4_741, rel-4_743, rel-4_742, rel-6_10, rel-4_744, rel-4_747, rel-6_13, rel-4_01, rel-4_03, rel-4_02, rel-2_0, rel-2_1, rel-1_9, rel-1_2, rel-3_6, rel-3_62, rel-3_63, rel-3_61, rel-1_5, rel-1_4, rel-1_7, rel-1_6, rel-3_4, rel-6_09, rel-6_08, rel-6_07, rel-6_06, rel-6_05, rel-6_04, rel-6_03, rel-6_02, rel-6_01, rel-5_161, rel-3_1, rel-4_74, rel-4_71, rel-4_72, rel-4_73, rel-5_371, rel-5_372, rel-6_512, rel-6_513, rel-6_511, rel-6_514, rel-5_22, rel-5_23, rel-5_24, rel-5_25, rel-6_32, rel-6_33, rel-6_31, rel-6_36, rel-6_37, rel-5_162, rel-5_2, rel-6_38, rel-6_39, rel-4_802, rel-4_803, rel-3_5, rel-4_801, rel-3_3, rel-3_2, rel-4_804, rel-3_0, rel-5_37, rel-5_36, rel-4_479, rel-6_23, rel-3_01, rel-6_29, rel-6_28, rel-6_46, rel-4_50, rel-4_51, rel-6_45, rel-4_4, rel-3_11, rel-1_31, rel-4_45, rel-6_51, rel-6_52, rel-6_53, rel-6_54, rel-6_55, rel-6_56, rel-6_57, rel-4_745, rel-4_901, rel-4_49, rel-4_48, rel-4_1, rel-4_2, rel-4_746, rel-5_11, rel-5_12, rel-5_15, rel-5_14, rel-5_17, rel-5_16, stack_sharing, rel-4_47, rel-4_46, rel-4_7, rel-3_501, rel-6_43, rel-6_42, rel-6_41, rel-6_47, rel-5_132, rel-5_131, rel-6_44, rel-6_49, rel-6_48, rel-4_911, rel-4_912, rel-4_31, rel-4_32, rel-4_33, rel-4_34, rel-4_35, rel-4_36, rel-4_37, HEAD
Changes since 1.1:	+1 -1 lines
Log Message:	* empty log message *
#	Content
1	/*
2	* This file was taken from pth-1.40/aclocal.m4
3	* The original copyright is below.
4	*
5	* GNU Pth - The GNU Portable Threads
6	* Copyright (c) 1999-2001 Ralf S. Engelschall <rse@engelschall.com>
7	*
8	* This file is part of GNU Pth, a non-preemptive thread scheduling
9	* library which can be found at http://www.gnu.org/software/pth/.
10	*
11	* This file is free software; you can redistribute it and/or
12	* modify it under the terms of the GNU Lesser General Public
13	* License as published by the Free Software Foundation; either
14	* version 2.1 of the License, or (at your option) any later version.
15	*
16	* This file is distributed in the hope that it will be useful,
17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19	* Lesser General Public License for more details.
20	*
21	* You should have received a copy of the GNU Lesser General Public
22	* License along with this file; if not, write to the Free Software
23	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
24	* USA, or contact Marc Lehmann <schmorp@schmorp.de>.
25	*/
26
27	#include <stdio.h>
28	#include <stdlib.h>
29	#include <string.h>
30	#if defined(TEST_sigstack) \|\| defined(TEST_sigaltstack)
31	#include <sys/types.h>
32	#include <signal.h>
33	#include <unistd.h>
34	#endif
35	#if defined(TEST_makecontext)
36	#include <ucontext.h>
37	#endif
38	union alltypes {
39	long l;
40	double d;
41	void *vp;
42	void (*fp)(void);
43	char *cp;
44	};
45	static volatile char handler_addr = (char )0xDEAD;
46	#if defined(TEST_sigstack) \|\| defined(TEST_sigaltstack)
47	static volatile int handler_done = 0;
48	void handler(int sig)
49	{
50	char garbage[1024];
51	int i;
52	auto int dummy;
53	for (i = 0; i < 1024; i++)
54	garbage[i] = 'X';
55	handler_addr = (char *)&dummy;
56	handler_done = 1;
57	return;
58	}
59	#endif
60	#if defined(TEST_makecontext)
61	static ucontext_t uc_handler;
62	static ucontext_t uc_main;
63	void handler(void)
64	{
65	char garbage[1024];
66	int i;
67	auto int dummy;
68	for (i = 0; i < 1024; i++)
69	garbage[i] = 'X';
70	handler_addr = (char *)&dummy;
71	swapcontext(&uc_handler, &uc_main);
72	return;
73	}
74	#endif
75	int main(int argc, char *argv[])
76	{
77	FILE *f;
78	char *skaddr;
79	char *skbuf;
80	int sksize;
81	char result[1024];
82	int i;
83	sksize = 32768;
84	skbuf = (char )malloc(sksize2+2*sizeof(union alltypes));
85	if (skbuf == NULL)
86	exit(1);
87	for (i = 0; i < sksize2+2sizeof(union alltypes); i++)
88	skbuf[i] = 'A';
89	skaddr = skbuf+sizeof(union alltypes);
90	#if defined(TEST_sigstack) \|\| defined(TEST_sigaltstack)
91	{
92	struct sigaction sa;
93	#if defined(TEST_sigstack)
94	struct sigstack ss;
95	#elif defined(TEST_sigaltstack) && defined(HAVE_STACK_T)
96	stack_t ss;
97	#else
98	struct sigaltstack ss;
99	#endif
100	#if defined(TEST_sigstack)
101	ss.ss_sp = (void *)(skaddr + sksize);
102	ss.ss_onstack = 0;
103	if (sigstack(&ss, NULL) < 0)
104	exit(1);
105	#elif defined(TEST_sigaltstack)
106	ss.ss_sp = (void *)(skaddr + sksize);
107	ss.ss_size = sksize;
108	ss.ss_flags = 0;
109	if (sigaltstack(&ss, NULL) < 0)
110	exit(1);
111	#endif
112	memset((void *)&sa, 0, sizeof(struct sigaction));
113	sa.sa_handler = handler;
114	sa.sa_flags = SA_ONSTACK;
115	sigemptyset(&sa.sa_mask);
116	sigaction(SIGUSR1, &sa, NULL);
117	kill(getpid(), SIGUSR1);
118	while (!handler_done)
119	/nop/;
120	}
121	#endif
122	#if defined(TEST_makecontext)
123	{
124	if (getcontext(&uc_handler) != 0)
125	exit(1);
126	uc_handler.uc_link = NULL;
127	uc_handler.uc_stack.ss_sp = (void *)(skaddr + sksize);
128	uc_handler.uc_stack.ss_size = sksize;
129	uc_handler.uc_stack.ss_flags = 0;
130	makecontext(&uc_handler, handler, 1);
131	swapcontext(&uc_main, &uc_handler);
132	}
133	#endif
134	if (handler_addr == (char *)0xDEAD)
135	exit(1);
136	if (handler_addr < skaddr+sksize) {
137	/* stack was placed into lower area */
138	if (*(skaddr+sksize) != 'A')
139	sprintf(result, "(skaddr)+(sksize)-%d,(sksize)-%d",
140	sizeof(union alltypes), sizeof(union alltypes));
141	else
142	strcpy(result, "(skaddr)+(sksize),(sksize)");
143	}
144	else {
145	/* stack was placed into higher area */
146	if ((skaddr+sksize2) != 'A')
147	sprintf(result, "(skaddr),(sksize)-%d", sizeof(union alltypes));
148	else
149	strcpy(result, "(skaddr),(sksize)");
150	}
151	printf("%s\n", result);
152	exit(0);
153	}
154