diff options
| -rw-r--r-- | odb/buffer.cxx | 34 | ||||
| -rw-r--r-- | odb/buffer.hxx | 27 | ||||
| -rw-r--r-- | odb/makefile | 1 |
3 files changed, 60 insertions, 2 deletions
diff --git a/odb/buffer.cxx b/odb/buffer.cxx new file mode 100644 index 0000000..f920258 --- /dev/null +++ b/odb/buffer.cxx @@ -0,0 +1,34 @@ +// file : odb/buffer.cxx +// author : Boris Kolpackov <boris@codesynthesis.com> +// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +#include <cstring> // std::memcpy + +#include <odb/buffer.hxx> + +using namespace std; + +namespace odb +{ + void buffer:: + capacity (size_t c, size_t data_size) + { + if (c > capacity_) + { + size_t n (capacity_ * 2 > c ? capacity_ * 2 : c); + char* d (static_cast<char*> (operator new (n))); + + if (data_ != 0) + { + if (data_size != 0) + memcpy (d, data_, data_size); + + operator delete (data_); + } + + data_ = d; + capacity_ = n; + } + } +} diff --git a/odb/buffer.hxx b/odb/buffer.hxx index 99482ae..2a07735 100644 --- a/odb/buffer.hxx +++ b/odb/buffer.hxx @@ -6,6 +6,7 @@ #ifndef ODB_BUFFER_HXX #define ODB_BUFFER_HXX +#include <new> #include <cstddef> // std::size_t namespace odb @@ -13,10 +14,32 @@ namespace odb class buffer { public: - buffer (); + ~buffer () + { + if (data_) + operator delete (data_); + } + + buffer () + : capacity_ (512) + { + data_ = static_cast<char*> (operator new (capacity_)); + } + + char* + data () + { + return data_; + } + + std::size_t + capacity () const + { + return capacity_; + } void - grow (std::size_t new_capacity, std::size_t data_size); + capacity (std::size_t, std::size_t data_size = 0); private: char* data_; diff --git a/odb/makefile b/odb/makefile index fdeb6ea..bae84e0 100644 --- a/odb/makefile +++ b/odb/makefile @@ -7,6 +7,7 @@ include $(dir $(lastword $(MAKEFILE_LIST)))../build/bootstrap.make cxx_tun := \ shared-ptr/base.cxx \ +buffer.cxx \ exception.cxx \ exceptions.cxx \ database.cxx \ |