Adding upstream version 1.2.2.upstream/1.2.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 202 insertions, 0 deletions

diff --git a/src/inkgc/gc-core.h b/src/inkgc/gc-core.h
new file mode 100644
index 0000000..cbd4b7e
--- /dev/null
+++ b/src/inkgc/gc-core.h
@@ -0,0 +1,202 @@
+// 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 :