Remove unused import core.stdc.stdio

[software/druntime.git] / src / gc / stub / gc.d

diff --git a/src/gc/stub/gc.d b/src/gc/stub/gc.d
index 29e268699d030dcb8cad8e15eb7f06f2b937b696..45ecbdea1cfd3339c189c3ddb21a8a2489f3306e 100644 (file)
--- a/src/gc/stub/gc.d
+++ b/src/gc/stub/gc.d
@@ -18,10 +18,12 @@
  * Authors:   Sean Kelly
  */
 
  * Authors:   Sean Kelly
  */
 

-private import stdc.stdlib;
+module gc.gc;

 
 private
 {
 
 private
 {

+   import core.stdc.stdlib;
+

    enum BlkAttr : uint
     {
         FINALIZE = 0b0000_0001,
    enum BlkAttr : uint
     {
         FINALIZE = 0b0000_0001,


@@ -39,6 +41,81 @@ private
 
     extern (C) void thread_init();
     extern (C) void onOutOfMemoryError();
 
     extern (C) void thread_init();
     extern (C) void onOutOfMemoryError();

+
+    struct Proxy
+    {
+        extern (C) void function() gc_enable;
+        extern (C) void function() gc_disable;
+        extern (C) void function() gc_collect;
+        extern (C) void function() gc_minimize;
+
+        extern (C) uint function(void*) gc_getAttr;
+        extern (C) uint function(void*, uint) gc_setAttr;
+        extern (C) uint function(void*, uint) gc_clrAttr;
+
+        extern (C) void*  function(size_t, uint) gc_malloc;
+        extern (C) void*  function(size_t, uint) gc_calloc;
+        extern (C) void*  function(void*, size_t, uint ba) gc_realloc;
+        extern (C) size_t function(void*, size_t, size_t) gc_extend;
+        extern (C) size_t function(size_t) gc_reserve;
+        extern (C) void   function(void*) gc_free;
+
+        extern (C) void*   function(void*) gc_addrOf;
+        extern (C) size_t  function(void*) gc_sizeOf;
+
+        extern (C) BlkInfo function(void*) gc_query;
+
+        extern (C) void function(void*) gc_addRoot;
+        extern (C) void function(void*, size_t) gc_addRange;
+
+        extern (C) void function(void*) gc_removeRoot;
+        extern (C) void function(void*) gc_removeRange;
+    }
+
+    Proxy  pthis;
+    Proxy* proxy;
+
+    void initProxy()
+    {
+        pthis.gc_enable = &gc_enable;
+        pthis.gc_disable = &gc_disable;
+        pthis.gc_collect = &gc_collect;
+        pthis.gc_minimize = &gc_minimize;
+
+        pthis.gc_getAttr = &gc_getAttr;
+        pthis.gc_setAttr = &gc_setAttr;
+        pthis.gc_clrAttr = &gc_clrAttr;
+
+        pthis.gc_malloc = &gc_malloc;
+        pthis.gc_calloc = &gc_calloc;
+        pthis.gc_realloc = &gc_realloc;
+        pthis.gc_extend = &gc_extend;
+        pthis.gc_reserve = &gc_reserve;
+        pthis.gc_free = &gc_free;
+
+        pthis.gc_addrOf = &gc_addrOf;
+        pthis.gc_sizeOf = &gc_sizeOf;
+
+        pthis.gc_query = &gc_query;
+
+        pthis.gc_addRoot = &gc_addRoot;
+        pthis.gc_addRange = &gc_addRange;
+
+        pthis.gc_removeRoot = &gc_removeRoot;
+        pthis.gc_removeRange = &gc_removeRange;
+    }
+
+    void** roots  = null;
+    size_t nroots = 0;
+
+    struct Range
+    {
+        void*  pos;
+        size_t len;
+    }
+
+    Range* ranges  = null;
+    size_t nranges = 0;

 }
 
 extern (C) void gc_init()
 }
 
 extern (C) void gc_init()


@@ -46,121 +123,233 @@ extern (C) void gc_init()
     // NOTE: The GC must initialize the thread library before its first
     //       collection, and always before returning from gc_init().
     thread_init();
     // NOTE: The GC must initialize the thread library before its first
     //       collection, and always before returning from gc_init().
     thread_init();

+    initProxy();

 }
 
 extern (C) void gc_term()
 {
 }
 
 extern (C) void gc_term()
 {

-
+    free( roots );
+    free( ranges );

 }
 
 extern (C) void gc_enable()
 {
 }
 
 extern (C) void gc_enable()
 {

-
+    if( proxy is null )
+        return;
+    return proxy.gc_enable();

 }
 
 extern (C) void gc_disable()
 {
 }
 
 extern (C) void gc_disable()
 {

-
+    if( proxy is null )
+        return;
+    return proxy.gc_disable();

 }
 
 extern (C) void gc_collect()
 {
 }
 
 extern (C) void gc_collect()
 {

-
+    if( proxy is null )
+        return;
+    return proxy.gc_collect();

 }
 
 extern (C) void gc_minimize()
 {
 }
 
 extern (C) void gc_minimize()
 {

-
+    if( proxy is null )
+        return;
+    return proxy.gc_minimize();

 }
 
 extern (C) uint gc_getAttr( void* p )
 {
 }
 
 extern (C) uint gc_getAttr( void* p )
 {

-    return 0;
+    if( proxy is null )
+        return 0;
+    return proxy.gc_getAttr( p );

 }
 
 extern (C) uint gc_setAttr( void* p, uint a )
 {
 }
 
 extern (C) uint gc_setAttr( void* p, uint a )
 {

-    return 0;
+    if( proxy is null )
+        return 0;
+    return proxy.gc_setAttr( p, a );

 }
 
 extern (C) uint gc_clrAttr( void* p, uint a )
 {
 }
 
 extern (C) uint gc_clrAttr( void* p, uint a )
 {

-    return 0;
+    if( proxy is null )
+        return 0;
+    return proxy.gc_clrAttr( p, a );

 }
 
 extern (C) void* gc_malloc( size_t sz, uint ba = 0 )
 {
 }
 
 extern (C) void* gc_malloc( size_t sz, uint ba = 0 )
 {

-    void* p = malloc( sz );
+    if( proxy is null )
+    {
+        void* p = malloc( sz );

 
 

-    if( sz && p is null )
-        onOutOfMemoryError();
-    return p;
+        if( sz && p is null )
+            onOutOfMemoryError();
+        return p;
+    }
+    return proxy.gc_malloc( sz, ba );

 }
 
 extern (C) void* gc_calloc( size_t sz, uint ba = 0 )
 {
 }
 
 extern (C) void* gc_calloc( size_t sz, uint ba = 0 )
 {

-    void* p = calloc( 1, sz );
+    if( proxy is null )
+    {
+        void* p = calloc( 1, sz );

 
 

-    if( sz && p is null )
-        onOutOfMemoryError();
-    return p;
+        if( sz && p is null )
+            onOutOfMemoryError();
+        return p;
+    }
+    return proxy.gc_calloc( sz, ba );

 }
 
 extern (C) void* gc_realloc( void* p, size_t sz, uint ba = 0 )
 {
 }
 
 extern (C) void* gc_realloc( void* p, size_t sz, uint ba = 0 )
 {

-    p = realloc( p, sz );
+    if( proxy is null )
+    {
+        p = realloc( p, sz );

 
 

-    if( sz && p is null )
-        onOutOfMemoryError();
-    return p;
+        if( sz && p is null )
+            onOutOfMemoryError();
+        return p;
+    }
+    return proxy.gc_realloc( p, sz, ba );

 }
 
 extern (C) size_t gc_extend( void* p, size_t mx, size_t sz )
 {
 }
 
 extern (C) size_t gc_extend( void* p, size_t mx, size_t sz )
 {

-    return 0;
+    if( proxy is null )
+        return 0;
+    return proxy.gc_extend( p, mx, sz );

 }
 
 extern (C) size_t gc_reserve( size_t sz )
 {
 }
 
 extern (C) size_t gc_reserve( size_t sz )
 {

-    return 0;
+    if( proxy is null )
+        return 0;
+    return proxy.gc_reserve( sz );

 }
 
 extern (C) void gc_free( void* p )
 {
 }
 
 extern (C) void gc_free( void* p )
 {

-    free( p );
+    if( proxy is null )
+        return free( p );
+    return proxy.gc_free( p );

 }
 
 extern (C) void* gc_addrOf( void* p )
 {
 }
 
 extern (C) void* gc_addrOf( void* p )
 {

-    return null;
+    if( proxy is null )
+        return null;
+    return proxy.gc_addrOf( p );

 }
 
 extern (C) size_t gc_sizeOf( void* p )
 {
 }
 
 extern (C) size_t gc_sizeOf( void* p )
 {

-    return 0;
+    if( proxy is null )
+        return 0;
+    return proxy.gc_sizeOf( p );

 }
 
 extern (C) BlkInfo gc_query( void* p )
 {
 }
 
 extern (C) BlkInfo gc_query( void* p )
 {

-    return BlkInfo.init;
+    if( proxy is null )
+        return BlkInfo.init;
+    return proxy.gc_query( p );

 }
 
 extern (C) void gc_addRoot( void* p )
 {
 }
 
 extern (C) void gc_addRoot( void* p )
 {

+    if( proxy is null )
+    {
+        void** r = cast(void**) realloc( roots,
+                                         (nroots+1) * roots[0].sizeof );
+        if( r is null )
+            onOutOfMemoryError();
+        r[nroots++] = p;
+        roots = r;

 
 

+    }
+    return proxy.gc_addRoot( p );

 }
 
 extern (C) void gc_addRange( void* p, size_t sz )
 {
 }
 
 extern (C) void gc_addRange( void* p, size_t sz )
 {

-
+    if( proxy is null )
+    {
+        Range* r = cast(Range*) realloc( ranges,
+                                         (nranges+1) * ranges[0].sizeof );
+        if( r is null )
+            onOutOfMemoryError();
+        r[nranges].pos = p;
+        r[nranges].len = sz;
+        ranges = r;
+        ++nranges;
+    }
+    return proxy.gc_addRange( p, sz );

 }
 
 extern (C) void gc_removeRoot( void *p )
 {
 }
 
 extern (C) void gc_removeRoot( void *p )
 {

-
+    if( proxy is null )
+    {
+        for( size_t i = 0; i < nroots; ++i )
+        {
+            if( roots[i] is p )
+            {
+                roots[i] = roots[--nroots];
+                return;
+            }
+        }
+        assert( false );
+    }
+    return proxy.gc_removeRoot( p );

 }
 
 extern (C) void gc_removeRange( void *p )
 {
 }
 
 extern (C) void gc_removeRange( void *p )
 {

+    if( proxy is null )
+    {
+        for( size_t i = 0; i < nranges; ++i )
+        {
+            if( ranges[i].pos is p )
+            {
+                ranges[i] = ranges[--nranges];
+                return;
+            }
+        }
+        assert( false );
+    }
+    return proxy.gc_removeRange( p );
+}
+
+extern (C) Proxy* gc_getProxy()
+{
+    return &pthis;
+}

 
 

+export extern (C) void gc_setProxy( Proxy* p )
+{
+    if( proxy !is null )
+    {
+        // TODO: Decide if this is an error condition.
+    }
+    proxy = p;
+    foreach( r; roots[0 .. nroots] )
+        proxy.gc_addRoot( r );
+    foreach( r; ranges[0 .. nranges] )
+        proxy.gc_addRange( r.pos, r.len );
+}
+
+export extern (C) void gc_clrProxy()
+{
+    foreach( r; ranges[0 .. nranges] )
+        proxy.gc_removeRange( r.pos );
+    foreach( r; roots[0 .. nroots] )
+        proxy.gc_removeRoot( r );
+    proxy = null;

 }
 }