Release 4.10 tools/testing/selftests/powerpc/signal/signal_tm.c

/*
 * Copyright 2016, Cyril Bur, IBM Corp.
 *
 * 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
 * 2 of the License, or (at your option) any later version.
 *
 * Sending one self a signal should always get delivered.
 */

#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>

#include <altivec.h>

#include "utils.h"
#include "../tm/tm.h"


#define MAX_ATTEMPT 500000

#define TIMEOUT 10

extern long tm_signal_self(pid_t pid, int sig, long *ret);


static sig_atomic_t signaled;

static sig_atomic_t fail;



static void signal_handler(int sig)
{
	if (tcheck_active()) {
		fail = 2;
		return;
	}

	if (sig == SIGUSR1)
		signaled = 1;
	else
		fail = 1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
cyril bur
cyril bur
36
100.00%
1
100.00%
Total
36
100.00%
1
100.00%



static int test_signal_tm()
{
	int i;
	struct sigaction act;

	act.sa_handler = signal_handler;
	act.sa_flags = 0;
	sigemptyset(&act.sa_mask);
	if (sigaction(SIGUSR1, &act, NULL) < 0) {
		perror("sigaction SIGUSR1");
		exit(1);
	}
	if (sigaction(SIGALRM, &act, NULL) < 0) {
		perror("sigaction SIGALRM");
		exit(1);
	}

	SKIP_IF(!have_htm());

	for (i = 0; i < MAX_ATTEMPT; i++) {
		/*
                 * If anything bad happens in ASM and we fail to set ret
                 * because *handwave* TM this will cause failure
                 */
		long ret = 0xdead;
		long rc = 0xbeef;

		alarm(0); /* Disable any pending */
		signaled = 0;
		alarm(TIMEOUT);
		FAIL_IF(tcheck_transactional());
		rc = tm_signal_self(getpid(), SIGUSR1, &ret);
		if (ret == 0xdead)
			/*
                         * This basically means the transaction aborted before we
                         * even got to the suspend... this is crazy but it
                         * happens.
                         * Yes this also means we might never make forward
                         * progress... the alarm() will trip eventually...
                         */
			continue;

		if (rc || ret) {
			/* Ret is actually an errno */
			printf("TEXASR 0x%016lx, TFIAR 0x%016lx\n",
					__builtin_get_texasr(), __builtin_get_tfiar());
			fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n",
					i, fail, rc, ret);
			FAIL_IF(ret);
		}
		while(!signaled && !fail)
			asm volatile("": : :"memory");
		if (!signaled) {
			fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n",
					i, fail, rc, ret);
			FAIL_IF(fail); /* For the line number */
		}
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
cyril bur
cyril bur
242
100.00%
1
100.00%
Total
242
100.00%
1
100.00%



int main(void)
{
	return test_harness(test_signal_tm, "signal_tm");
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
cyril bur
cyril bur
15
100.00%
1
100.00%
Total
15
100.00%
1
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
cyril bur
cyril bur
352
100.00%
1
100.00%
Total
352
100.00%
1
100.00%
Directory: tools/testing/selftests/powerpc/signal

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.