support aliyun sdk on TencentOS tiny

sample: examples\aliyun_iotkit_csdk_mqtt
project: board\TencentOS_tiny_EVB_MX_Plus\KEIL\aliyun_iotkit_csdk_mqtt

components/connectivity/iotkit-embedded-3.0.1/3rdparty/external_libs/nghttp2/nghttp2_rcbuf.c

@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2015-2018 Alibaba Group Holding Limited
+ */
+
+
+#include "nghttp2_rcbuf.h"
+
+#include <string.h>
+#include <assert.h>
+
+#include "nghttp2_mem.h"
+#include "nghttp2_helper.h"
+
+int nghttp2_rcbuf_new(nghttp2_rcbuf **rcbuf_ptr, size_t size,
+                      nghttp2_mem *mem) {
+  uint8_t *p;
+
+  p = nghttp2_mem_malloc(mem, sizeof(nghttp2_rcbuf) + size);
+  if (p == NULL) {
+    return NGHTTP2_ERR_NOMEM;
+  }
+
+  *rcbuf_ptr = (void *)p;
+
+  (*rcbuf_ptr)->mem_user_data = mem->mem_user_data;
+  (*rcbuf_ptr)->free = mem->free;
+  (*rcbuf_ptr)->base = p + sizeof(nghttp2_rcbuf);
+  (*rcbuf_ptr)->len = size;
+  (*rcbuf_ptr)->ref = 1;
+
+  return 0;
+}
+
+int nghttp2_rcbuf_new2(nghttp2_rcbuf **rcbuf_ptr, const uint8_t *src,
+                       size_t srclen, nghttp2_mem *mem) {
+  int rv;
+
+  rv = nghttp2_rcbuf_new(rcbuf_ptr, srclen + 1, mem);
+  if (rv != 0) {
+    return rv;
+  }
+
+  (*rcbuf_ptr)->len = srclen;
+  *nghttp2_cpymem((*rcbuf_ptr)->base, src, srclen) = '\0';
+
+  return 0;
+}
+
+/*
+ * Frees |rcbuf| itself, regardless of its reference cout.
+ */
+void nghttp2_rcbuf_del(nghttp2_rcbuf *rcbuf) {
+  nghttp2_mem_free2(rcbuf->free, rcbuf, rcbuf->mem_user_data);
+}
+
+void nghttp2_rcbuf_incref(nghttp2_rcbuf *rcbuf) {
+  if (rcbuf->ref == -1) {
+    return;
+  }
+
+  ++rcbuf->ref;
+}
+
+void nghttp2_rcbuf_decref(nghttp2_rcbuf *rcbuf) {
+  if (rcbuf == NULL || rcbuf->ref == -1) {
+    return;
+  }
+
+  assert(rcbuf->ref > 0);
+
+  if (--rcbuf->ref == 0) {
+    nghttp2_rcbuf_del(rcbuf);
+  }
+}
+
+nghttp2_vec nghttp2_rcbuf_get_buf(nghttp2_rcbuf *rcbuf) {
+  nghttp2_vec res = {rcbuf->base, rcbuf->len};
+  return res;
+}
+
+int nghttp2_rcbuf_is_static(const nghttp2_rcbuf *rcbuf) {
+  return rcbuf->ref == -1;
+}