First commit XiUOS

applications/user_api/posix_support/pthread.c

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+/*
+ * 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:    pthread.c
+* @brief:   posix api of pthread
+* @version: 1.0
+* @author:  AIIT XUOS Lab
+* @date:    2020/4/20
+*
+*/
+
+#include "include/pthread.h"
+
+int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
+                   void *(*start_routine)(void *), void *arg)
+{
+    int ret ;
+    int pid ;
+    utask_x task ;
+    task.func_entry = start_routine ;
+    task.func_param = arg ;
+    memcpy(task.name , "utask", 6);
+    task.prio = 20 ;
+    task.stack_size = 1024 ;
+
+    pid = UserTaskCreate(task);
+    if (pid < 0)
+      return -1 ;
+    
+    ret = UserTaskStartup(pid);
+    return ret;
+
+}
+
+void pthread_exit(void *value_ptr){
+    //todo add exit value
+    UserTaskQuit();
+}
+
+pthread_t pthread_self(void){
+    
+    pthread_t pthread ;
+    pthread = UserGetTaskID();
+    return pthread;
+}
+
+int pthread_setschedprio(pthread_t thread, int prio)
+{
+    //add syscall
+    return 0;
+}
+
+int pthread_equal(pthread_t t1, pthread_t t2)
+{
+    return (int)(t1 == t2);
+}
+
+int pthread_cancel(pthread_t thread)
+{
+    return -1;
+}
+
+void pthread_testcancel(void)
+{
+    return;
+}
+
+int pthread_setcancelstate(int state, int *oldstate)
+{
+    return -1;
+}
+
+int pthread_setcanceltype(int type, int *oldtype)
+{
+    return -1;
+}
+
+int pthread_kill(pthread_t thread, int sig)
+{
+    /* This api should not be used, and will not be supported */
+    return -1;
+}
+
+