msgpack-c调试历程–demo要看仔细

先贴demo代码:

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#include <stdio.h>
int (void)
{
msgpack_sbuffer sbuf;
msgpack_sbuffer_init(&sbuf);
/* serialize values into the buffer using msgpack_sbuffer_write callback function. */
msgpack_packer pk;
msgpack_packer_init(&pk, &sbuf, msgpack_sbuffer_write);
msgpack_pack_array(&pk, 3);
msgpack_pack_int(&pk, 1);
msgpack_pack_true(&pk);
msgpack_pack_str(&pk, 7);
msgpack_pack_str_body(&pk, "example", 7);
/* deserialize the buffer into msgpack_object instance. */
/* deserialized object is valid during the msgpack_zone instance alive. */
msgpack_zone mempool;
msgpack_zone_init(&mempool, 2048);
msgpack_object deserialized;
msgpack_unpack(sbuf.data, sbuf.size, NULL, &mempool, &deserialized);
/* print the deserialized object. */
msgpack_object_print(stdout, deserialized);
puts("");
msgpack_zone_destroy(&mempool);
msgpack_sbuffer_destroy(&sbuf);
return 0;
}

注意代码中msgpack_zone的注释,查看msgpack_object结构体,内部的数据部分指针指向zone的地址,所以只有在zone生命周期内,object才是有效的。