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authorTavian Barnes <tavianator@gmail.com>2009-06-24 21:28:21 +0000
committerTavian Barnes <tavianator@gmail.com>2009-06-24 21:28:21 +0000
commitdfe61d045121068c0f4bf6240615cab2f9a7448d (patch)
tree3fc6a84d726c5716b4ff7f6db269445d1f6dbcb6 /libdimensionxx/dimensionxx/array.hpp
parent02d9554b1d81e1ddae04194c299b354c04b0c706 (diff)
downloaddimension-dfe61d045121068c0f4bf6240615cab2f9a7448d.tar.xz
Finish C++ dmnsn_array* wrapper.
Diffstat (limited to 'libdimensionxx/dimensionxx/array.hpp')
-rw-r--r--libdimensionxx/dimensionxx/array.hpp100
1 files changed, 90 insertions, 10 deletions
diff --git a/libdimensionxx/dimensionxx/array.hpp b/libdimensionxx/dimensionxx/array.hpp
index 6f8c59a..b13fa8a 100644
--- a/libdimensionxx/dimensionxx/array.hpp
+++ b/libdimensionxx/dimensionxx/array.hpp
@@ -22,11 +22,46 @@
#define DIMENSIONXX_ARRAY_HPP
#include <tr1/memory>
+#include <cstdlib> // For size_t
// dmnsn_array* wrapper.
namespace Dimension
{
+ // RAII scoped read-lock
+ class Array_Read_Lock
+ {
+ public:
+ explicit Array_Read_Lock(const dmnsn_array* array)
+ : m_array(new const dmnsn_array*(array)) { dmnsn_array_rdlock(*m_array); }
+ // Array_Read_Lock(const Array_Read_Lock& lock);
+ ~Array_Read_Lock()
+ { if (m_array.unique()) { dmnsn_array_unlock(*m_array); } }
+
+ private:
+ // Copy assignment prohibited
+ Array_Read_Lock& operator=(const Array_Read_Lock&);
+
+ std::tr1::shared_ptr<const dmnsn_array*> m_array;
+ };
+
+ // RAII scoped write-lock
+ class Array_Write_Lock
+ {
+ public:
+ explicit Array_Write_Lock(dmnsn_array* array)
+ : m_array(new dmnsn_array*(array)) { dmnsn_array_wrlock(*m_array); }
+ // Array_Write_Lock(const Array_Write_Lock& lock);
+ ~Array_Write_Lock()
+ { if (m_array.unique()) { dmnsn_array_unlock(*m_array); } }
+
+ private:
+ // Copy assignment prohibited
+ Array_Write_Lock& operator=(const Array_Write_Lock&);
+
+ std::tr1::shared_ptr<dmnsn_array*> m_array;
+ };
+
// Array template class, wraps a dmnsn_array*. Copying is possible, but
// copies refer to the same object, which is reference counted. T must be
// a POD type.
@@ -37,13 +72,34 @@ namespace Dimension
Array();
explicit Array(dmnsn_array* array);
// Array(const Array& a);
- ~Array();
+ ~Array()
+ { if (m_array && m_array.unique()) { dmnsn_delete_array(dmnsn()); } }
// Array& operator=(const Array& a);
+ inline T at(std::size_t i) const;
+ void set(std::size_t i, T object) { dmnsn_array_set(dmnsn(), i, &object); }
+
+ std::size_t size() const { return dmnsn_array_size(dmnsn()); }
+ void resize(std::size_t size) { dmnsn_array_resize(dmnsn(), size); }
+
+ // For manual locking
+
+ Array_Read_Lock read_lock() const { return Array_Read_Lock(dmnsn()); }
+ Array_Write_Lock write_lock() { return Array_Write_Lock(dmnsn()); }
+
+ T& operator[](std::size_t i)
+ { return *reinterpret_cast<T*>(dmnsn_array_at(dmnsn(), i)); }
+ const T& operator[](std::size_t i) const
+ { return *reinterpret_cast<const T*>(dmnsn_array_at(dmnsn(), i)); }
+ std::size_t size_unlocked() const
+ { return dmnsn_array_size_unlocked(dmnsn()); }
+ void resize_unlocked(std::size_t size)
+ { dmnsn_array_resize_unlocked(dmnsn(), size); }
+
// Access the wrapped C object.
- dmnsn_array* dmnsn() { return *m_array; }
- const dmnsn_array* dmnsn() const { return *m_array; }
+ dmnsn_array* dmnsn();
+ const dmnsn_array* dmnsn() const;
// Release ownership of the dmnsn_array*, needed for returning a
// dmnsn_array* from a function.
@@ -84,24 +140,48 @@ namespace Dimension
}
template <typename T>
- Array<T>::~Array()
+ inline T
+ Array<T>::at(std::size_t i) const
{
- if (m_array.unique()) {
- dmnsn_delete_array(*m_array);
+ T ret;
+ dmnsn_array_get(dmnsn(), i, &ret);
+ return ret;
+ }
+
+ template <typename T>
+ dmnsn_array*
+ Array<T>::dmnsn()
+ {
+ if (!m_array) {
+ throw Dimension_Error("Attempting to access released array.");
}
+
+ return *m_array;
+ }
+
+ template <typename T>
+ const dmnsn_array*
+ Array<T>::dmnsn() const
+ {
+ if (!m_array) {
+ throw Dimension_Error("Attempting to access released array.");
+ }
+
+ return *m_array;
}
template <typename T>
dmnsn_array*
Array<T>::release()
{
+ dmnsn_array* array = dmnsn();
+
if (!m_array.unique()) {
throw Dimension_Error("Attempting to release non-unique array.");
+ } else {
+ m_array.reset();
+ return array;
}
-
- dmnsn_array* array = *m_array;
- m_array.reset();
- return array;
}
}