Refactor clock functions to use WASI types (#2666)

Refactoring the clock functions to use WASI types so we can simplify the
code and remove some unnecessary boilerplate. See
https://github.com/bytecodealliance/wasm-micro-runtime/pull/2637#discussion_r1362202879
for details.

core/shared/platform/include/platform_api_extension.h

@@ -36,26 +36,6 @@ extern "C" {
  * 2. To build the app-mgr and app-framework, you must implement it
  */
 
-/**
- * Get a resolution of the clock
- *
- * @param clock_id clock identifier
- * @param resolution output variable to store the clock resolution
- * @return BHT_OK if success; otherwise, BHT_ERROR
- */
-int
-os_clock_res_get(bh_clock_id_t clock_id, uint64 *resolution);
-
-/**
- * Get a current time of the clock
- *
- * @param clock_id clock identifier
- * @param time output variable to store the clock time
- * @return BHT_OK if success; otherwise, BHT_ERROR
- */
-int
-os_clock_time_get(bh_clock_id_t clock_id, uint64 precision, uint64 *time);
-
 /**
  * Creates a thread
  *

core/shared/platform/include/platform_common.h

@@ -37,13 +37,6 @@ extern "C" {
 #define BH_TIME_T_MAX LONG_MAX
 #endif
 
-typedef enum {
-    BH_CLOCK_ID_REALTIME,
-    BH_CLOCK_ID_MONOTONIC,
-    BH_CLOCK_ID_PROCESS_CPUTIME_ID,
-    BH_CLOCK_ID_THREAD_CPUTIME_ID
-} bh_clock_id_t;
-
 #if defined(_MSC_BUILD)
 #if defined(COMPILING_WASM_RUNTIME_API)
 __declspec(dllexport) void *BH_MALLOC(unsigned int size);

core/shared/platform/include/platform_wasi.h

@@ -1093,6 +1093,33 @@ os_is_handle_valid(os_file_handle *handle);
 char *
 os_realpath(const char *path, char *resolved_path);
 
+/****************************************************
+ *                                                  *
+ *                Clock functions                   *
+ *                                                  *
+ ****************************************************/
+
+/**
+ * Get the resolution of the specified clock.
+ *
+ * @param clock_id clock identifier
+ * @param resolution output variable to store the clock resolution
+ */
+__wasi_errno_t
+os_clock_res_get(__wasi_clockid_t clock_id, __wasi_timestamp_t *resolution);
+
+/**
+ * Get the current time of the specified clock.
+ *
+ * @param clock_id clock identifier
+ * @param precision the maximum lag that the returned time value may have,
+ * compared to its actual value.
+ * @param time output variable to store the clock time
+ */
+__wasi_errno_t
+os_clock_time_get(__wasi_clockid_t clock_id, __wasi_timestamp_t precision,
+                  __wasi_timestamp_t *time);
+
 #ifdef __cplusplus
 }
 #endif