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, 34 insertions, 0 deletions

diff --git a/test/wasi/c/getrusage.c b/test/wasi/c/getrusage.c
new file mode 100644
index 0000000000..ad1e430b85
--- /dev/null
+++ b/test/wasi/c/getrusage.c
@@ -0,0 +1,34 @@
+#include <assert.h>
+#include <sys/resource.h>
+
+int main() {
+  struct rusage ru1;
+  struct rusage ru2;
+  long long s1;
+  long long us1;
+  long long s2;
+  long long us2;
+  int r;
+  int success = 0;
+
+  r = getrusage(RUSAGE_SELF, &ru1);
+  assert(r == 0);
+  s1 = ru1.ru_utime.tv_sec;
+  us1 = ru1.ru_utime.tv_usec;
+
+  for (int i = 0; i < 10000; i++) {
+    r = getrusage(RUSAGE_SELF, &ru2);
+    assert(r == 0);
+    s2 = ru2.ru_utime.tv_sec;
+    us2 = ru2.ru_utime.tv_usec;
+    assert(s1 <= s2);
+
+    // Verify that some time has passed.
+    if (s2 > s1 || (s2 == s1 && us2 > us1)) {
+      success = 1;
+      break;
+    }
+  }
+
+  assert(success == 1);
+}