add: rots_task_posix, 解决bsp/linux编译失败

components/rtos/posix/luat_rtos_task_posix.c

@@ -0,0 +1,64 @@
+
+#include "luat_base.h"
+#include "luat_rtos.h"
+
+#include "pthread.h"
+#include "string.h"
+#include "luat_malloc.h"
+#include "limits.h"
+
+#define LUAT_LOG_TAG "posix"
+#include "luat_log.h"
+
+#define PTHREAD_COUNT 16
+
+static pthread_t threads[PTHREAD_COUNT] = {0};
+
+static int next_thread_id(void) {
+    for (size_t i = 0; i < PTHREAD_COUNT; i++)
+    {
+        if (threads[i] == NULL)
+            return i;
+    }
+    return -1;
+}
+
+static void* pthread_proxy(void* params) {
+    luat_thread_t* t = (luat_thread_t*) params;
+    t->entry(t->userdata);
+    threads[t->id] = NULL;
+    return NULL;
+}
+
+LUAT_RET luat_thread_start(luat_thread_t* thread) {
+    pthread_attr_t tattr; 
+    size_t size; 
+    int ret; 
+    size = (PTHREAD_STACK_MIN + 0x1000); 
+    /* setting a new size */ 
+    ret = pthread_attr_setstacksize(&tattr, size);
+
+    int thread_id = next_thread_id();
+    if (thread_id < 0) {
+        LLOGW("too many thread, can't create new thread");
+        return LUAT_ERR_FAIL;
+    }
+    thread->id = thread_id;
+    LLOGD("thread id %d", thread_id);
+    ret = pthread_create(&threads[thread_id], NULL, pthread_proxy, thread);
+    if (ret != 0) {
+        LLOGW("pthread_create fail %d", ret);
+        return LUAT_ERR_FAIL;
+    }
+    return LUAT_ERR_OK;
+}
+
+LUAT_RET luat_thread_stop(luat_thread_t* thread) {
+    LLOGE("thread stop isn't supported");
+    return LUAT_ERR_FAIL;
+}
+
+LUAT_RET luat_thread_delete(luat_thread_t* thread) {
+    LLOGE("thread stop isn't supported");
+    return LUAT_ERR_FAIL;
+}