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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2016, Cyril Bur, IBM Corp.
*
* 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;
}
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());
SKIP_IF(htm_is_synthetic());
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;
}
int main(void)
{
return test_harness(test_signal_tm, "signal_tm");
}
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