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gcinterface.d
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gcinterface.d
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/**
* Contains the internal GC interface.
*
* Copyright: Copyright Digital Mars 2016.
* License: $(HTTP www.boost.org/LICENSE_1_0.txt, Boost License 1.0).
* Authors: Walter Bright, Sean Kelly, Jeremy DeHaan
*/
/* Copyright Digital Mars 2016.
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*/
module core.gc.gcinterface;
static import core.memory;
alias BlkAttr = core.memory.GC.BlkAttr;
alias BlkInfo = core.memory.GC.BlkInfo;
alias RootIterator = int delegate(scope int delegate(ref Root) nothrow dg);
alias RangeIterator = int delegate(scope int delegate(ref Range) nothrow dg);
struct Root
{
void* proot;
alias proot this;
}
struct Range
{
void* pbot;
void* ptop;
TypeInfo ti; // should be tail const, but doesn't exist for references
alias pbot this; // only consider pbot for relative ordering (opCmp)
bool opEquals(const scope Range rhs) nothrow const { return pbot == rhs.pbot; }
}
interface GC
{
/**
*
*/
void enable();
/**
*
*/
void disable();
/**
*
*/
void collect() nothrow;
/**
*
*/
void collectNoStack() nothrow;
/**
* minimize free space usage
*/
void minimize() nothrow;
/**
*
*/
uint getAttr(void* p) nothrow;
/**
*
*/
uint setAttr(void* p, uint mask) nothrow;
/**
*
*/
uint clrAttr(void* p, uint mask) nothrow;
/**
*
*/
void* malloc(size_t size, uint bits, const TypeInfo ti) nothrow;
/*
*
*/
BlkInfo qalloc(size_t size, uint bits, const TypeInfo ti) nothrow;
/*
*
*/
void* calloc(size_t size, uint bits, const TypeInfo ti) nothrow;
/*
*
*/
void* realloc(void* p, size_t size, uint bits, const TypeInfo ti) nothrow;
/**
* Attempt to in-place enlarge the memory block pointed to by p by at least
* minsize bytes, up to a maximum of maxsize additional bytes.
* This does not attempt to move the memory block (like realloc() does).
*
* Returns:
* 0 if could not extend p,
* total size of entire memory block if successful.
*/
size_t extend(void* p, size_t minsize, size_t maxsize, const TypeInfo ti) nothrow;
/**
*
*/
size_t reserve(size_t size) nothrow;
/**
*
*/
void free(void* p) nothrow @nogc;
/**
* Determine the base address of the block containing p. If p is not a gc
* allocated pointer, return null.
*/
void* addrOf(void* p) nothrow @nogc;
/**
* Determine the allocated size of pointer p. If p is an interior pointer
* or not a gc allocated pointer, return 0.
*/
size_t sizeOf(void* p) nothrow @nogc;
/**
* Determine the base address of the block containing p. If p is not a gc
* allocated pointer, return null.
*/
BlkInfo query(void* p) nothrow;
/**
* Retrieve statistics about garbage collection.
* Useful for debugging and tuning.
*/
core.memory.GC.Stats stats() nothrow;
/**
* Retrieve profile statistics about garbage collection.
* Useful for debugging and tuning.
*/
core.memory.GC.ProfileStats profileStats() nothrow;
/**
* add p to list of roots
*/
void addRoot(void* p) nothrow @nogc;
/**
* remove p from list of roots
*/
void removeRoot(void* p) nothrow @nogc;
/**
*
*/
@property RootIterator rootIter() @nogc;
/**
* add range to scan for roots
*/
void addRange(void* p, size_t sz, const TypeInfo ti) nothrow @nogc;
/**
* remove range
*/
void removeRange(void* p) nothrow @nogc;
/**
*
*/
@property RangeIterator rangeIter() @nogc;
/**
* run finalizers
*/
void runFinalizers(const scope void[] segment) nothrow;
/*
*
*/
bool inFinalizer() nothrow;
}