Support kernel semaphore.

2024-05-29 11:06:03 +08:00
parent bd7966c5a3
commit 5a2c07e1a9
17 changed files with 394 additions and 16 deletions
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2020 AIIT XUOS Lab
+ * XiUOS is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *        http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+/**
+ * @file sys_semaphore.c
+ * @brief support semaphore for userland
+ * @version 3.0
+ * @author AIIT XUOS Lab
+ * @date 2024.05.29
+ */
+
+#include "ksemaphore.h"
+#include "multicores.h"
+#include "syscall.h"
+#include "task.h"
+
+extern bool ksemaphore_wait(struct XiziSemaphorePool* sem_pool, struct Thread* thd, uint32_t sem_id);
+int sys_semaphore(sys_sem_option op, int param)
+{
+    bool ret = false;
+    switch (op) {
+    case SYS_SEM_NEW: {
+        // here, param is treat as val
+        return ksemaphore_alloc(&xizi_task_manager.semaphore_pool, param);
+    }
+    case SYS_SEM_FREE: {
+        // here, param is treat as sem_id
+        ret = ksemaphore_free(&xizi_task_manager.semaphore_pool, param);
+        break;
+    }
+    case SYS_SEM_SIGNAL: {
+        ret = ksemaphore_signal(&xizi_task_manager.semaphore_pool, param);
+        break;
+    }
+    case SYS_SEM_WAIT: {
+        ret = ksemaphore_wait(&xizi_task_manager.semaphore_pool, cur_cpu()->task, param);
+        break;
+    }
+    }
+
+    if (LIKELY(ret)) {
+        return 0;
+    }
+    return -1;
+}