| /* |
| * Copyright (c) 2005, Bull S.A.. All rights reserved. |
| * Created by: Sebastien Decugis |
| |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| |
| * This sample test aims to check the following assertions: |
| * |
| * If SA_SIGINFO is set and realtime signals extension is supported, queueable |
| * signals generated by sigqueue or some other functions are delivered in FIFO |
| * order. |
| |
| * The steps are: |
| * -> Test for RTS extension support |
| * -> install a handler for SIGRTMAX signal with SA_SIGINFO set. |
| * -> Mask this signal |
| * -> Generate the signal several imes with sigqueue and known user values. |
| * -> unmask the signal |
| * -> check that the signals are delivered in order. |
| |
| * The test fails if the signals are not delivered in FIFO order. |
| */ |
| |
| |
| /* This test uses some XSI features */ |
| |
| /******************************************************************************/ |
| /*************************** standard includes ********************************/ |
| /******************************************************************************/ |
| #include <pthread.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include <signal.h> |
| #include <errno.h> |
| |
| /******************************************************************************/ |
| /*************************** Test framework *******************************/ |
| /******************************************************************************/ |
| #include "../testfrmw/testfrmw.h" |
| #include "../testfrmw/testfrmw.c" |
| /* This header is responsible for defining the following macros: |
| * UNRESOLVED(ret, descr); |
| * where descr is a description of the error and ret is an int |
| * (error code for example) |
| * FAILED(descr); |
| * where descr is a short text saying why the test has failed. |
| * PASSED(); |
| * No parameter. |
| * |
| * Both three macros shall terminate the calling process. |
| * The testcase shall not terminate in any other maneer. |
| * |
| * The other file defines the functions |
| * void output_init() |
| * void output(char * string, ...) |
| * |
| * Those may be used to output information. |
| */ |
| |
| /******************************************************************************/ |
| /**************************** Configuration ***********************************/ |
| /******************************************************************************/ |
| #ifndef VERBOSE |
| #define VERBOSE 1 |
| #endif |
| |
| #define QUEUELENGTH 10 |
| |
| /******************************************************************************/ |
| /*************************** Test case ***********************************/ |
| /******************************************************************************/ |
| |
| sig_atomic_t latest = 0; |
| |
| void handler(int sig, siginfo_t * info, void *context) |
| { |
| if (info->si_signo != SIGRTMAX) { |
| output("Received unexpected signal %d\n", info->si_signo); |
| } else { |
| latest++; |
| |
| if (latest != info->si_value.sival_int) { |
| output("Got signal %d, expected %d!\n", |
| info->si_value.sival_int, latest); |
| FAILED("Wrong signal delivered -- no FIFO order?"); |
| } |
| } |
| } |
| |
| /* main function */ |
| int main(void) |
| { |
| int ret; |
| long rts; |
| |
| struct sigaction sa; |
| union sigval sv; |
| sigset_t mask; |
| |
| /* Initialize output */ |
| output_init(); |
| |
| /* Test the RTS extension */ |
| rts = sysconf(_SC_REALTIME_SIGNALS); |
| |
| if (rts < 0L) { |
| UNTESTED("This test needs the RTS extension"); |
| } |
| |
| /* Set the signal handler */ |
| sa.sa_flags = SA_SIGINFO; |
| |
| sa.sa_sigaction = handler; |
| |
| ret = sigemptyset(&sa.sa_mask); |
| |
| if (ret != 0) { |
| UNRESOLVED(ret, "Failed to empty signal set"); |
| } |
| |
| /* Install the signal handler for SIGRTMAX */ |
| ret = sigaction(SIGRTMAX, &sa, 0); |
| |
| if (ret != 0) { |
| UNRESOLVED(ret, "Failed to set signal handler"); |
| } |
| |
| /* Mask this signal */ |
| ret = sigemptyset(&mask); |
| |
| if (ret != 0) { |
| UNRESOLVED(ret, "An error occured while initializing mask"); |
| } |
| |
| ret = sigaddset(&mask, SIGRTMAX); |
| |
| if (ret != 0) { |
| UNRESOLVED(ret, "Failed to add SIGRTMAX to signal set"); |
| } |
| |
| ret = sigprocmask(SIG_BLOCK, &mask, NULL); |
| |
| if (ret != 0) { |
| UNRESOLVED(ret, "Failed to set process signal mask"); |
| } |
| |
| /* Now queue the signal to be pending */ |
| |
| for (sv.sival_int = 1; sv.sival_int <= QUEUELENGTH; sv.sival_int++) { |
| ret = sigqueue(getpid(), SIGRTMAX, sv); |
| |
| if (ret != 0) { |
| UNRESOLVED(ret, "Failed to queue the signal"); |
| } |
| } |
| |
| if (latest != 0) { |
| FAILED("Signal was delivered while masked??"); |
| } |
| |
| /* And finally unmask the signal so it is delivered */ |
| ret = sigprocmask(SIG_UNBLOCK, &mask, NULL); |
| |
| if (ret != 0) { |
| UNRESOLVED(ret, "Failed to set process signal mask"); |
| } |
| |
| sched_yield(); |
| |
| /* Check the signal has been delivered as expected */ |
| |
| if (latest != QUEUELENGTH) { |
| output("Only %d signal delivered instead of %d\n", latest, |
| QUEUELENGTH); |
| |
| if (latest == 1) { |
| UNTESTED |
| ("It seems like SIGRTMAX is not a queuable signal here?"); |
| } |
| } |
| |
| /* Test passed */ |
| #if VERBOSE > 0 |
| |
| output("Test passed\n"); |
| |
| #endif |
| |
| PASSED; |
| } |