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b41347e496
PR-URL: https://github.com/nodejs/node/pull/52538 Fixes: https://github.com/nodejs/node/issues/51822 Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Michael Dawson <midawson@redhat.com>
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
#include <assert.h>
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#include <poll.h>
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#include <time.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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int main(void) {
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struct pollfd fds[4];
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time_t before, now;
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int ret;
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char* platform;
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int is_aix_or_os400;
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int is_win;
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platform = getenv("NODE_PLATFORM");
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is_aix_or_os400 = platform != NULL && (0 == strcmp(platform, "aix") || 0 == strcmp(platform, "os400"));
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is_win = platform != NULL && 0 == strcmp(platform, "win32");
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// Test sleep() behavior.
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time(&before);
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sleep(1);
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time(&now);
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assert(now - before >= 1);
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// Test poll() timeout behavior.
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fds[0] = (struct pollfd){.fd = -1, .events = 0, .revents = 0};
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time(&before);
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ret = poll(fds, 1, 2000);
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time(&now);
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assert(ret == 0);
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assert(now - before >= 2);
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// V8 has a bug that allows unsupported parts of this test to run,
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// causing the test to fail. poll_win.c is a workaround.
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// https://github.com/nodejs/node/issues/51822
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// The rest of the test is unsupported on Windows.
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if (is_win)
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return 0;
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fds[0] = (struct pollfd){.fd = 1, .events = POLLOUT, .revents = 0};
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fds[1] = (struct pollfd){.fd = 2, .events = POLLOUT, .revents = 0};
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ret = poll(fds, 2, -1);
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assert(ret == 2);
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assert(fds[0].revents == POLLOUT);
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assert(fds[1].revents == POLLOUT);
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// Make a poll() call with duplicate file descriptors.
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fds[0] = (struct pollfd){.fd = 1, .events = POLLOUT, .revents = 0};
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fds[1] = (struct pollfd){.fd = 2, .events = POLLOUT, .revents = 0};
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fds[2] = (struct pollfd){.fd = 1, .events = POLLOUT, .revents = 0};
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fds[3] = (struct pollfd){.fd = 1, .events = POLLIN, .revents = 0};
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ret = poll(fds, 2, -1);
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assert(ret == 2);
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assert(fds[0].revents == POLLOUT);
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assert(fds[1].revents == POLLOUT);
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assert(fds[2].revents == 0);
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assert(fds[3].revents == 0);
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// The original version of this test expected a timeout and return value of
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// zero. In the Node test suite, STDIN is not a TTY, and poll() returns one,
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// with revents = POLLHUP | POLLIN, except on AIX whose poll() does not
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// support POLLHUP.
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fds[0] = (struct pollfd){.fd = 0, .events = POLLIN, .revents = 0};
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ret = poll(fds, 1, 2000);
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assert(ret == 1);
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if (is_aix_or_os400)
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assert(fds[0].revents == POLLIN);
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else
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assert(fds[0].revents == (POLLHUP | POLLIN));
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return 0;
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}
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