| 1 | /*
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| 2 | * Copyright (c) 2012 Vojtech Horky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | #include <stdio.h>
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| 30 | #include <stdlib.h>
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| 31 | #include <time.h>
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| 32 | #include <io/console.h>
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| 33 | #include <async.h>
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| 34 | #include "../tester.h"
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| 35 |
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| 36 | #define DURATION_SECS 30
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| 37 |
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| 38 | const char *test_starve_ipc(void)
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| 39 | {
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| 40 | const char *err = NULL;
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| 41 | console_ctrl_t *console = console_init(stdin, stdout);
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| 42 | if (console == NULL)
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| 43 | return "Failed to init connection with console.";
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| 44 |
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| 45 | struct timespec start;
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| 46 | getuptime(&start);
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| 47 |
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| 48 | TPRINTF("Intensive computation shall be imagined (for %ds)...\n", DURATION_SECS);
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| 49 | TPRINTF("Press a key to terminate prematurely...\n");
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| 50 | while (true) {
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| 51 | struct timespec now;
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| 52 | getuptime(&now);
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| 53 |
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| 54 | if (NSEC2SEC(ts_sub_diff(&now, &start)) >= DURATION_SECS)
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| 55 | break;
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| 56 |
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| 57 | cons_event_t ev;
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| 58 | usec_t timeout = 0;
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| 59 | errno_t rc = console_get_event_timeout(console, &ev, &timeout);
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| 60 | if (rc == EOK) {
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| 61 | if (ev.type == CEV_KEY && ev.ev.key.type == KEY_PRESS) {
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| 62 | TPRINTF("Key %d pressed, terminating.\n", ev.ev.key.key);
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| 63 | break;
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| 64 | }
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| 65 | } else if (rc != ETIMEOUT) {
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| 66 | TPRINTF("Got rc=%d, terminating.\n", rc);
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| 67 | break;
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| 68 | }
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| 69 | }
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| 70 |
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| 71 | // FIXME - unless a key was pressed, the answer leaked as no one
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| 72 | // will wait for it.
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| 73 | // We cannot use async_forget() directly, though. Something like
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| 74 | // console_forget_pending_kbd_event() shall come here.
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| 75 |
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| 76 | TPRINTF("Terminating...\n");
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| 77 |
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| 78 | console_done(console);
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| 79 |
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| 80 | return err;
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| 81 | }
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