108 lines
2.2 KiB
C
108 lines
2.2 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2016, Cyril Bur, IBM Corp.
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*
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* Sending one self a signal should always get delivered.
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*/
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#include <errno.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <signal.h>
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#include <unistd.h>
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#include <altivec.h>
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#include "utils.h"
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#include "../tm/tm.h"
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#define MAX_ATTEMPT 500000
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#define TIMEOUT 10
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extern long tm_signal_self(pid_t pid, int sig, long *ret);
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static sig_atomic_t signaled;
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static sig_atomic_t fail;
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static void signal_handler(int sig)
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{
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if (tcheck_active()) {
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fail = 2;
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return;
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}
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if (sig == SIGUSR1)
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signaled = 1;
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else
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fail = 1;
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}
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static int test_signal_tm()
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{
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int i;
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struct sigaction act;
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act.sa_handler = signal_handler;
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act.sa_flags = 0;
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sigemptyset(&act.sa_mask);
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if (sigaction(SIGUSR1, &act, NULL) < 0) {
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perror("sigaction SIGUSR1");
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exit(1);
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}
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if (sigaction(SIGALRM, &act, NULL) < 0) {
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perror("sigaction SIGALRM");
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exit(1);
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}
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SKIP_IF(!have_htm());
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SKIP_IF(htm_is_synthetic());
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for (i = 0; i < MAX_ATTEMPT; i++) {
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/*
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* If anything bad happens in ASM and we fail to set ret
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* because *handwave* TM this will cause failure
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*/
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long ret = 0xdead;
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long rc = 0xbeef;
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alarm(0); /* Disable any pending */
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signaled = 0;
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alarm(TIMEOUT);
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FAIL_IF(tcheck_transactional());
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rc = tm_signal_self(getpid(), SIGUSR1, &ret);
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if (ret == 0xdead)
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/*
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* This basically means the transaction aborted before we
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* even got to the suspend... this is crazy but it
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* happens.
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* Yes this also means we might never make forward
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* progress... the alarm() will trip eventually...
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*/
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continue;
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if (rc || ret) {
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/* Ret is actually an errno */
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printf("TEXASR 0x%016lx, TFIAR 0x%016lx\n",
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__builtin_get_texasr(), __builtin_get_tfiar());
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fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n",
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i, fail, rc, ret);
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FAIL_IF(ret);
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}
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while(!signaled && !fail)
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asm volatile("": : :"memory");
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if (!signaled) {
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fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n",
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i, fail, rc, ret);
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FAIL_IF(fail); /* For the line number */
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}
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}
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return 0;
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}
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int main(void)
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{
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return test_harness(test_signal_tm, "signal_tm");
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}
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