1 files changed, 26 insertions, 0 deletions
diff --git a/libc-bottom-half/clocks/times.c b/libc-bottom-half/clocks/times.c
new file mode 100644
index 0000000..e245569
--- /dev/null
+++ b/libc-bottom-half/clocks/times.c
@@ -0,0 +1,26 @@
+#define _WASI_EMULATED_PROCESS_CLOCKS
+#include <time.h>
+#include <sys/times.h>
+#include <wasi/api.h>
+#include <common/time.h>
+
+_Static_assert(
+    CLOCKS_PER_SEC == NSEC_PER_SEC,
+    "This implementation assumes that `clock` is in nanoseconds"
+);
+
+// `clock` is a weak symbol so that application code can override it.
+// We want to use the function in libc, so use the libc-internal name.
+clock_t __clock(void);
+
+clock_t times(struct tms *buffer) {
+    __wasi_timestamp_t user = __clock();
+    *buffer = (struct tms){
+        .tms_utime = user,
+        .tms_cutime = user
+    };
+
+    __wasi_timestamp_t realtime = 0;
+    (void)__wasi_clock_time_get(__WASI_CLOCKID_MONOTONIC, 0, &realtime);
+    return realtime;
+}