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/**
* Contains the external GC interface.
*
* Copyright: Copyright Digital Mars 2005 - 2016.
* License: $(WEB www.boost.org/LICENSE_1_0.txt, Boost License 1.0).
* Authors: Walter Bright, Sean Kelly
*/
/* Copyright Digital Mars 2005 - 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 gc.proxy;
import gc.impl.conservative.gc;
import gc.impl.manual.gc;
import gc.config;
import gc.gcinterface;
static import core.memory;
private
{
static import core.memory;
alias BlkInfo = core.memory.GC.BlkInfo;
extern (C) void thread_init();
extern (C) void thread_term();
__gshared GC instance;
__gshared GC proxiedGC; // used to iterate roots of Windows DLLs
}
extern (C)
{
void gc_init()
{
config.initialize();
ManualGC.initialize(instance);
ConservativeGC.initialize(instance);
if (instance is null)
{
import core.stdc.stdio : fprintf, stderr;
import core.stdc.stdlib : exit;
fprintf(stderr, "No GC was initialized, please recheck the name of the selected GC ('%.*s').\n", cast(int)config.gc.length, config.gc.ptr);
exit(1);
}
// NOTE: The GC must initialize the thread library
// before its first collection.
thread_init();
}
void gc_term()
{
// NOTE: There may be daemons threads still running when this routine is
// called. If so, cleaning memory out from under then is a good
// way to make them crash horribly. This probably doesn't matter
// much since the app is supposed to be shutting down anyway, but
// I'm disabling cleanup for now until I can think about it some
// more.
//
// NOTE: Due to popular demand, this has been re-enabled. It still has
// the problems mentioned above though, so I guess we'll see.
instance.collectNoStack(); // not really a 'collect all' -- still scans
// static data area, roots, and ranges.
thread_term();
ManualGC.finalize(instance);
ConservativeGC.finalize(instance);
}
void gc_enable()
{
instance.enable();
}
void gc_disable()
{
instance.disable();
}
void gc_collect() nothrow
{
instance.collect();
}
void gc_minimize() nothrow
{
instance.minimize();
}
uint gc_getAttr( void* p ) nothrow
{
return instance.getAttr(p);
}
uint gc_setAttr( void* p, uint a ) nothrow
{
return instance.setAttr(p, a);
}
uint gc_clrAttr( void* p, uint a ) nothrow
{
return instance.clrAttr(p, a);
}
void* gc_malloc( size_t sz, uint ba = 0, const TypeInfo ti = null ) nothrow
{
return instance.malloc(sz, ba, ti);
}
BlkInfo gc_qalloc( size_t sz, uint ba = 0, const TypeInfo ti = null ) nothrow
{
return instance.qalloc( sz, ba, ti );
}
void* gc_calloc( size_t sz, uint ba = 0, const TypeInfo ti = null ) nothrow
{
return instance.calloc( sz, ba, ti );
}
void* gc_realloc( void* p, size_t sz, uint ba = 0, const TypeInfo ti = null ) nothrow
{
return instance.realloc( p, sz, ba, ti );
}
size_t gc_extend( void* p, size_t mx, size_t sz, const TypeInfo ti = null ) nothrow
{
return instance.extend( p, mx, sz,ti );
}
size_t gc_reserve( size_t sz ) nothrow
{
return instance.reserve( sz );
}
void gc_free( void* p ) nothrow
{
return instance.free( p );
}
void* gc_addrOf( void* p ) nothrow
{
return instance.addrOf( p );
}
size_t gc_sizeOf( void* p ) nothrow
{
return instance.sizeOf( p );
}
BlkInfo gc_query( void* p ) nothrow
{
return instance.query( p );
}
core.memory.GC.Stats gc_stats() nothrow
{
return instance.stats();
}
void gc_addRoot( void* p ) nothrow
{
return instance.addRoot( p );
}
void gc_addRange( void* p, size_t sz, const TypeInfo ti = null ) nothrow
{
return instance.addRange( p, sz, ti );
}
void gc_removeRoot( void* p ) nothrow
{
return instance.removeRoot( p );
}
void gc_removeRange( void* p ) nothrow
{
return instance.removeRange( p );
}
void gc_runFinalizers( in void[] segment ) nothrow
{
return instance.runFinalizers( segment );
}
bool gc_inFinalizer() nothrow
{
return instance.inFinalizer();
}
GC gc_getProxy() nothrow
{
return instance;
}
export
{
void gc_setProxy( GC proxy )
{
foreach (root; instance.rootIter)
{
proxy.addRoot(root);
}
foreach (range; instance.rangeIter)
{
proxy.addRange(range.pbot, range.ptop - range.pbot, range.ti);
}
proxiedGC = instance; // remember initial GC to later remove roots
instance = proxy;
}
void gc_clrProxy()
{
foreach (root; proxiedGC.rootIter)
{
instance.removeRoot(root);
}
foreach (range; proxiedGC.rangeIter)
{
instance.removeRange(range);
}
instance = proxiedGC;
proxiedGC = null;
}
}
}
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