Convert all io_data_t copying to shared_ptr copying.

Copy constructor of io_data_t is removed.

Author: xiaq

exec.cpp

@@ -397,7 +397,7 @@ static bool io_transmogrify(const io_chain_t &in_chain, io_chain_t &out_chain, s
             case IO_BUFFER:
             case IO_CLOSE:
             {
-                out.reset(new io_data_t(*in));
+                out = in;
                 break;
             }
 

io.cpp

@@ -172,7 +172,7 @@ io_chain_t io_chain_t::duplicate() const
     result.reserve(this->size());
     for (io_chain_t::const_iterator iter = this->begin(); iter != this->end(); iter++)
     {
-        result.push_back(shared_ptr<io_data_t>(new io_data_t(**iter)));
+        result.push_back(*iter);
     }
     return result;
 }
@@ -183,7 +183,7 @@ void io_chain_t::duplicate_prepend(const io_chain_t &src)
     this->insert(this->begin(), src.size(), shared_ptr<io_data_t>());
     for (size_t idx = 0; idx < src.size(); idx++)
     {
-        this->at(idx).reset(new io_data_t(*src.at(idx)));
+        this->at(idx) = src.at(idx);
     }
 }
 

io.h

@@ -107,17 +107,6 @@ class io_data_t
     {
     }
 
-    io_data_t(const io_data_t &rhs) :
-        out_buffer(rhs.out_buffer),
-        io_mode(rhs.io_mode),
-        fd(rhs.fd),
-        param1(rhs.param1),
-        param2(rhs.param2),
-        filename_cstr(rhs.filename_cstr ? strdup(rhs.filename_cstr) : NULL),
-        is_input(rhs.is_input)
-    {
-    }
-
     ~io_data_t()
     {
         free((void *)filename_cstr);