68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
/*
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* SPDX-License-Identifier: MIT
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*/
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <evl/thread.h>
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#include <evl/xbuf.h>
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#include "helpers.h"
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static void *peer(void *arg)
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{
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const char *path = arg;
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int fd, n, nfd, nfd2;
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char buf[2];
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ssize_t ret;
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__Tcall_assert(fd, open(path, O_RDWR));
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__Tcall_assert(nfd, dup(fd));
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__Tcall_assert(nfd2, dup2(fd, nfd));
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for (n = 0; n < 3; n++) {
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__Tcall_errno_assert(ret, read(fd, buf, 2));
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if (ret != 2)
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break;
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}
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return NULL;
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}
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int main(int argc, char *argv[])
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{
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char *name, *path, buf[16];
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int tfd, xfd, n;
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pthread_t tid;
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ssize_t ret;
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__Tcall_assert(tfd, evl_attach_self("basic-xbuf:%d", getpid()));
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name = get_unique_name_and_path(EVL_XBUF_DEV, 0, &path);
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__Tcall_assert(xfd, evl_new_xbuf(1024, name));
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__Tcall_errno_assert(ret, write(xfd, "ABCD", 4));
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__Tcall_errno_assert(ret, write(xfd, "EF", 2));
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__Tcall_errno_assert(ret, write(xfd, "G", 1));
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__Tcall_errno_assert(ret, write(xfd, "H", 1));
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__Tcall_errno_assert(ret, fcntl(xfd, F_SETFL,
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fcntl(xfd, F_GETFL)|O_NONBLOCK));
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for (n = 0; n < 8; n++)
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__Tcall_errno_assert(ret, oob_read(xfd, buf, 1));
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new_thread(&tid, SCHED_OTHER, 0, peer, path);
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sleep(1);
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__Tcall_errno_assert(ret, oob_write(xfd, "01", 2));
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__Tcall_errno_assert(ret, oob_write(xfd, "23", 2));
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__Tcall_errno_assert(ret, oob_write(xfd, "45", 2));
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pthread_join(tid, NULL);
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return 0;
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}
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