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Add internal finalize method for finalizing an object without deallocating

This commit is contained in:
Eugen Wissner 2017-04-16 20:13:20 +02:00
parent 8156d0fe3a
commit 7aa9ac9f4a
1 changed files with 34 additions and 33 deletions
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67
source/tanya/memory/package.d
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@ -11,6 +11,7 @@
module tanya.memory;
import core.exception;
import std.algorithm.iteration;
public import std.experimental.allocator : make;
import std.traits;
public import tanya.memory.allocator;
@ -87,8 +88,8 @@ shared Allocator allocator;
shared static this() nothrow @trusted @nogc
{
import tanya.memory.mallocator;
allocator = Mallocator.instance;
import tanya.memory.mmappool;
allocator = MmapPool.instance;
}
@property ref shared(Allocator) defaultAllocator() nothrow @safe @nogc
@ -202,41 +203,33 @@ private unittest
assert(p is null);
}
/**
* Destroys and deallocates $(D_PARAM p) of type $(D_PARAM T).
* It is assumed the respective entities had been allocated with the same
* allocator.
*
* Params:
* T = Type of $(D_PARAM p).
* allocator = Allocator the $(D_PARAM p) was allocated with.
* p = Object or array to be destroyed.
/*
* Destroys the object.
* Returns the memory should be freed.
*/
void dispose(T)(shared Allocator allocator, auto ref T* p)
package(tanya) void[] finalize(T)(ref T* p)
{
static if (hasElaborateDestructor!T)
{
destroy(*p);
}
() @trusted { allocator.deallocate((cast(void*) p)[0 .. T.sizeof]); }();
p = null;
return (cast(void*) p)[0 .. T.sizeof];
}
/// Ditto.
void dispose(T)(shared Allocator allocator, auto ref T p)
package(tanya) void[] finalize(T)(ref T p)
if (is(T == class) || is(T == interface))
{
if (p is null)
{
return;
return null;
}
static if (is(T == interface))
{
version(Windows)
{
import core.sys.windows.unknwn : IUnknown;
static assert(!is(T: IUnknown), "COM interfaces can't be destroyed in "
~ __PRETTY_FUNCTION__);
static assert(!is(T : IUnknown), "COM interfaces can't be destroyed in "
~ __PRETTY_FUNCTION__);
}
auto ob = cast(Object) p;
}
@ -244,19 +237,13 @@ void dispose(T)(shared Allocator allocator, auto ref T p)
{
alias ob = p;
}
auto ptr = cast(void *) ob;
auto ptr = cast(void*) ob;
auto support = ptr[0 .. typeid(ob).initializer.length];
scope (success)
{
() @trusted { allocator.deallocate(support); }();
p = null;
}
auto ppv = cast(void**) ptr;
if (!*ppv)
{
return;
return null;
}
auto pc = cast(ClassInfo*) *ppv;
scope (exit)
@ -280,21 +267,35 @@ void dispose(T)(shared Allocator allocator, auto ref T p)
{
_d_monitordelete(cast(Object) ptr, true);
}
return support;
}
/// Ditto.
void dispose(T)(shared Allocator allocator, auto ref T[] p)
package(tanya) void[] finalize(T)(ref T[] p)
{
static if (hasElaborateDestructor!(typeof(p[0])))
{
import std.algorithm.iteration;
p.each!(e => destroy(e));
p.each!((ref e) => destroy(e));
}
() @trusted { allocator.deallocate(p); }();
return p;
}
/**
* Destroys and deallocates $(D_PARAM p) of type $(D_PARAM T).
* It is assumed the respective entities had been allocated with the same
* allocator.
*
* Params:
* T = Type of $(D_PARAM p).
* allocator = Allocator the $(D_PARAM p) was allocated with.
* p = Object or array to be destroyed.
*/
void dispose(T)(shared Allocator allocator, auto ref T p)
{
() @trusted { allocator.deallocate(finalize(p)); }();
p = null;
}
unittest
private unittest
{
struct S
{