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Mini Shell
Mini Shell
#include <assert.h>
#include <poll.h>
#include <time.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
int main(void) {
struct pollfd fds[4];
time_t before, now;
int ret;
char* platform;
int is_aix_or_os400;
int is_win;
platform = getenv("NODE_PLATFORM");
is_aix_or_os400 = platform != NULL && (0 == strcmp(platform, "aix") || 0 == strcmp(platform, "os400"));
is_win = platform != NULL && 0 == strcmp(platform, "win32");
// Test sleep() behavior.
time(&before);
sleep(1);
time(&now);
assert(now - before >= 1);
// Test poll() timeout behavior.
fds[0] = (struct pollfd){.fd = -1, .events = 0, .revents = 0};
time(&before);
ret = poll(fds, 1, 2000);
time(&now);
assert(ret == 0);
assert(now - before >= 2);
// The rest of the test is unsupported on Windows.
if (is_win)
return 0;
fds[0] = (struct pollfd){.fd = 1, .events = POLLOUT, .revents = 0};
fds[1] = (struct pollfd){.fd = 2, .events = POLLOUT, .revents = 0};
ret = poll(fds, 2, -1);
assert(ret == 2);
assert(fds[0].revents == POLLOUT);
assert(fds[1].revents == POLLOUT);
// Make a poll() call with duplicate file descriptors.
fds[0] = (struct pollfd){.fd = 1, .events = POLLOUT, .revents = 0};
fds[1] = (struct pollfd){.fd = 2, .events = POLLOUT, .revents = 0};
fds[2] = (struct pollfd){.fd = 1, .events = POLLOUT, .revents = 0};
fds[3] = (struct pollfd){.fd = 1, .events = POLLIN, .revents = 0};
ret = poll(fds, 2, -1);
assert(ret == 2);
assert(fds[0].revents == POLLOUT);
assert(fds[1].revents == POLLOUT);
assert(fds[2].revents == 0);
assert(fds[3].revents == 0);
// The original version of this test expected a timeout and return value of
// zero. In the Node test suite, STDIN is not a TTY, and poll() returns one,
// with revents = POLLHUP | POLLIN, except on AIX whose poll() does not
// support POLLHUP.
fds[0] = (struct pollfd){.fd = 0, .events = POLLIN, .revents = 0};
ret = poll(fds, 1, 2000);
assert(ret == 1);
if (is_aix_or_os400)
assert(fds[0].revents == POLLIN);
else
assert(fds[0].revents == (POLLHUP | POLLIN));
return 0;
}
Zerion Mini Shell 1.0