wasi: introduce initial WASI support

Co-authored-by: Gus Caplan <me@gus.host>
Co-authored-by: Daniel Bevenius <daniel.bevenius@gmail.com>
Co-authored-by: Jiawen Geng <technicalcute@gmail.com>
Co-authored-by: Tobias Nießen <tniessen@tnie.de>
Co-authored-by: Chengzhong Wu <legendecas@gmail.com>

PR-URL: https://github.com/nodejs/node/pull/30258
Refs: https://github.com/nodejs/node/pull/27850
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Wyatt Preul <wpreul@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/test/wasi/c/poll.c b/test/wasi/c/poll.c
new file mode 100644
index 0000000000..6b6ef71fd6
--- /dev/null
+++ b/test/wasi/c/poll.c
@@ -0,0 +1,31 @@
+#include <assert.h>
+#include <poll.h>
+#include <time.h>
+#include <unistd.h>
+
+int main(void) {
+  struct pollfd fds[2];
+  time_t before, now;
+  int ret;
+
+  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);
+
+  fds[0] = (struct pollfd){.fd = 0, .events = POLLIN, .revents = 0};
+  time(&before);
+  ret = poll(fds, 1, 2000);
+  time(&now);
+  assert(ret == 0);
+  assert(now - before >= 2);
+
+  sleep(1);
+  time(&now);
+  assert(now - before >= 3);
+
+  return 0;
+}