参考代码

components/system/include/os/os_common.h

@@ -0,0 +1,68 @@
+/**
+ * @file os_common.h
+ * @author LokLiang (lokliang@163.com)
+ * @brief
+ * @version 0.1
+ * @date 2023-05-01
+ *
+ * @copyright Copyright (c) 2023
+ *
+ */
+
+#ifndef __OS_COMMON_H__
+#define __OS_COMMON_H__
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum  {
+    OS_PRIORITY_IDLE     = 0,
+    OS_PRIORITY_LOWEST   = 1,
+    OS_PRIORITY_LOWER    = 2,
+    OS_PRIORITY_LOW      = 3,
+    OS_PRIORITY_NORMAL   = 4,
+    OS_PRIORITY_HIGH     = 5,
+    OS_PRIORITY_HIGHER   = 6,
+    OS_PRIORITY_HIGHEST  = 7
+} os_priority;
+
+typedef enum {
+    OS_OK           = 0,    /* success */
+    OS_FAIL         = -1,   /* general failure */
+    OS_E_NOMEM      = -2,   /* out of memory */
+    OS_E_PARAM      = -3,   /* invalid parameter */
+    OS_E_TIMEOUT    = -4,   /* operation timeout */
+    OS_E_ISR        = -5,   /* not allowed in ISR context */
+} os_state;
+
+typedef void * os_handle_t;
+
+typedef size_t os_time_t;
+
+#define OS_INVALID_HANDLE       NULL        /* OS invalid handle */
+#define OS_WAIT_FOREVER         0xffffffffU /* Wait forever timeout value */
+#define OS_SEMAPHORE_MAX_COUNT  0xffffffffU /* Maximum count value for semaphore */
+
+#define OS_MSEC_PER_SEC     1000U       /* milliseconds per second */
+#define OS_USEC_PER_MSEC    1000U       /* microseconds per millisecond */
+#define OS_USEC_PER_SEC     1000000U    /* microseconds per second */
+
+#define OS_TICK (OS_USEC_PER_SEC / OS_TICK_RATE) /* microseconds per tick */
+
+#define OS_SecsToTicks(sec)     ((os_time_t)(sec) * OS_TICK_RATE)
+#define OS_MSecsToTicks(msec)   ((os_time_t)(OS_TICK_RATE < OS_MSEC_PER_SEC ? (msec) / (OS_TICK / OS_USEC_PER_MSEC) : (msec) * (OS_USEC_PER_MSEC / OS_TICK)))
+#define OS_TicksToMSecs(t)      ((os_time_t)(OS_TICK_RATE < OS_MSEC_PER_SEC ? (t) * (OS_TICK / OS_USEC_PER_MSEC) : (t) / (OS_USEC_PER_MSEC / OS_TICK)))
+#define OS_TicksToSecs(t)       ((os_time_t)(t) / (OS_USEC_PER_SEC / OS_TICK))
+
+#define OS_CONTAINER_OF(PTR, TYPE, MEMBER) ((TYPE *)&((uint8_t *)PTR)[-(int)&((TYPE *)0)->MEMBER])
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __OS_COMMON_H__ */