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// SPDX-License-Identifier: GPL-2.0-or-later
/** @file
* @brief Wrapper for Boehm GC
*/
/* Authors:
* MenTaLguY <mental@rydia.net>
*
* Copyright (C) 2004 MenTaLguY
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#ifndef SEEN_INKSCAPE_GC_CORE_H
#define SEEN_INKSCAPE_GC_CORE_H
#include <new>
#include <cstdlib>
# include <gc.h>
namespace Inkscape {
namespace GC {
enum ScanPolicy {
SCANNED,
ATOMIC
};
enum CollectionPolicy {
AUTO,
MANUAL
};
enum Delete {
GC
};
typedef void (*CleanupFunc)(void *mem, void *data);
struct Ops {
void (*do_init)();
void *(*malloc)(std::size_t size);
void *(*malloc_atomic)(std::size_t size);
void *(*malloc_uncollectable)(std::size_t size);
void *(*malloc_atomic_uncollectable)(std::size_t size);
void *(*base)(void *ptr);
void (*register_finalizer_ignore_self)(void *base,
CleanupFunc func, void *data,
CleanupFunc *old_func,
void **old_data);
int (*general_register_disappearing_link)(void **p_ptr,
void const *base);
int (*unregister_disappearing_link)(void **p_ptr);
std::size_t (*get_heap_size)();
std::size_t (*get_free_bytes)();
void (*gcollect)();
void (*enable)();
void (*disable)();
void (*free)(void *ptr);
};
struct Core {
public:
static void init();
static inline void *malloc(std::size_t size) {
return _ops.malloc(size);
}
static inline void *malloc_atomic(std::size_t size) {
return _ops.malloc_atomic(size);
}
static inline void *malloc_uncollectable(std::size_t size) {
return _ops.malloc_uncollectable(size);
}
static inline void *malloc_atomic_uncollectable(std::size_t size) {
return _ops.malloc_atomic_uncollectable(size);
}
static inline void *base(void *ptr) {
return _ops.base(ptr);
}
static inline void register_finalizer_ignore_self(void *base,
CleanupFunc func,
void *data,
CleanupFunc *old_func,
void **old_data)
{
return _ops.register_finalizer_ignore_self(base, func, data,
old_func, old_data);
}
static inline int general_register_disappearing_link(void **p_ptr,
void *base)
{
return _ops.general_register_disappearing_link(p_ptr, base);
}
static inline int unregister_disappearing_link(void **p_ptr) {
return _ops.unregister_disappearing_link(p_ptr);
}
static inline std::size_t get_heap_size() {
return _ops.get_heap_size();
}
static inline std::size_t get_free_bytes() {
return _ops.get_free_bytes();
}
static inline void gcollect() {
_ops.gcollect();
}
static inline void enable() {
_ops.enable();
}
static inline void disable() {
_ops.disable();
}
static inline void free(void *ptr) {
return _ops.free(ptr);
}
private:
static Ops _ops;
};
inline void init() {
Core::init();
}
void request_early_collection();
}
}
inline void *operator new(std::size_t size,
Inkscape::GC::ScanPolicy scan,
Inkscape::GC::CollectionPolicy collect,
Inkscape::GC::CleanupFunc cleanup=nullptr,
void *data=nullptr)
{
using namespace Inkscape::GC;
void *mem;
if ( collect == AUTO ) {
if ( scan == SCANNED ) {
mem = Core::malloc(size);
} else {
mem = Core::malloc_atomic(size);
}
} else {
if ( scan == SCANNED ) {
mem = Core::malloc_uncollectable(size);
} else {
mem = Core::malloc_atomic_uncollectable(size);
}
}
if (!mem) {
throw std::bad_alloc();
}
if (cleanup) {
Core::register_finalizer_ignore_self(mem, cleanup, data, nullptr, nullptr);
}
return mem;
}
inline void *operator new(std::size_t size,
Inkscape::GC::ScanPolicy scan,
Inkscape::GC::CleanupFunc cleanup=nullptr,
void *data=nullptr)
{
return operator new(size, scan, Inkscape::GC::AUTO, cleanup, data);
}
inline void *operator new[](std::size_t size,
Inkscape::GC::ScanPolicy scan,
Inkscape::GC::CollectionPolicy collect,
Inkscape::GC::CleanupFunc cleanup=nullptr,
void *data=nullptr)
{
return operator new(size, scan, collect, cleanup, data);
}
inline void *operator new[](std::size_t size,
Inkscape::GC::ScanPolicy scan,
Inkscape::GC::CleanupFunc cleanup=nullptr,
void *data=nullptr)
{
return operator new[](size, scan, Inkscape::GC::AUTO, cleanup, data);
}
inline void operator delete(void *mem, Inkscape::GC::Delete) {
Inkscape::GC::Core::free(mem);
}
inline void operator delete[](void *mem, Inkscape::GC::Delete) {
operator delete(mem, Inkscape::GC::GC);
}
#endif
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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