108 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright 2016, Cyril Bur, IBM Corp.4 *5 * Sending one self a signal should always get delivered.6 */7 8#include <errno.h>9#include <stdlib.h>10#include <stdio.h>11#include <string.h>12#include <signal.h>13#include <unistd.h>14 15#include <altivec.h>16 17#include "utils.h"18#include "../tm/tm.h"19 20#define MAX_ATTEMPT 50000021#define TIMEOUT 1022 23extern long tm_signal_self(pid_t pid, int sig, long *ret);24 25static sig_atomic_t signaled;26static sig_atomic_t fail;27 28static void signal_handler(int sig)29{30 if (tcheck_active()) {31 fail = 2;32 return;33 }34 35 if (sig == SIGUSR1)36 signaled = 1;37 else38 fail = 1;39}40 41static int test_signal_tm()42{43 int i;44 struct sigaction act;45 46 act.sa_handler = signal_handler;47 act.sa_flags = 0;48 sigemptyset(&act.sa_mask);49 if (sigaction(SIGUSR1, &act, NULL) < 0) {50 perror("sigaction SIGUSR1");51 exit(1);52 }53 if (sigaction(SIGALRM, &act, NULL) < 0) {54 perror("sigaction SIGALRM");55 exit(1);56 }57 58 SKIP_IF(!have_htm());59 SKIP_IF(htm_is_synthetic());60 61 for (i = 0; i < MAX_ATTEMPT; i++) {62 /*63 * If anything bad happens in ASM and we fail to set ret64 * because *handwave* TM this will cause failure65 */66 long ret = 0xdead;67 long rc = 0xbeef;68 69 alarm(0); /* Disable any pending */70 signaled = 0;71 alarm(TIMEOUT);72 FAIL_IF(tcheck_transactional());73 rc = tm_signal_self(getpid(), SIGUSR1, &ret);74 if (ret == 0xdead)75 /*76 * This basically means the transaction aborted before we77 * even got to the suspend... this is crazy but it78 * happens.79 * Yes this also means we might never make forward80 * progress... the alarm() will trip eventually...81 */82 continue;83 84 if (rc || ret) {85 /* Ret is actually an errno */86 printf("TEXASR 0x%016lx, TFIAR 0x%016lx\n",87 __builtin_get_texasr(), __builtin_get_tfiar());88 fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n",89 i, fail, rc, ret);90 FAIL_IF(ret);91 }92 while(!signaled && !fail)93 asm volatile("": : :"memory");94 if (!signaled) {95 fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n",96 i, fail, rc, ret);97 FAIL_IF(fail); /* For the line number */98 }99 }100 101 return 0;102}103 104int main(void)105{106 return test_harness(test_signal_tm, "signal_tm");107}108