runtime·mallocgc ( uintptr size , uintptr typ , uint32 flag )
{
int32 sizeclass;
uintptr tinysize , size1;
intgo rate;
MCache *c;
MSpan *s;
MLink *v , *next;
byte *tiny;
#line 49 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
if ( size == 0 ) {
#line 53 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
return &runtime·zerobase;
}
if ( m->mallocing )
runtime·throw ( "malloc/free - deadlock" ) ;
#line 59 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
m->locks++;
m->mallocing = 1;
#line 62 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
if ( DebugTypeAtBlockEnd )
size += sizeof ( uintptr ) ;
#line 65 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
c = m->mcache;
if ( !runtime·debug.efence && size <= MaxSmallSize ) {
if ( ( flag& ( FlagNoScan|FlagNoGC ) ) == FlagNoScan && size < TinySize ) {
#line 98 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
tinysize = c->tinysize;
if ( size <= tinysize ) {
tiny = c->tiny;
#line 102 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
if ( ( size&7 ) == 0 )
tiny = ( byte* ) ROUND ( ( uintptr ) tiny , 8 ) ;
else if ( ( size&3 ) == 0 )
tiny = ( byte* ) ROUND ( ( uintptr ) tiny , 4 ) ;
else if ( ( size&1 ) == 0 )
tiny = ( byte* ) ROUND ( ( uintptr ) tiny , 2 ) ;
size1 = size + ( tiny - c->tiny ) ;
if ( size1 <= tinysize ) {
#line 111 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
v = ( MLink* ) tiny;
c->tiny += size1;
c->tinysize -= size1;
m->mallocing = 0;
m->locks--;
if ( m->locks == 0 && g->preempt )
g->stackguard0 = StackPreempt;
return v;
}
}
#line 122 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
s = c->alloc[TinySizeClass];
if ( s->freelist == nil )
s = runtime·MCache_Refill ( c , TinySizeClass ) ;
v = s->freelist;
next = v->next;
s->freelist = next;
s->ref++;
if ( next != nil )
PREFETCH ( next ) ;
( ( uint64* ) v ) [0] = 0;
( ( uint64* ) v ) [1] = 0;
#line 135 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
if ( TinySize-size > tinysize ) {
c->tiny = ( byte* ) v + size;
c->tinysize = TinySize - size;
}
size = TinySize;
goto done;
}
#line 144 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
if ( size <= 1024-8 )
sizeclass = runtime·size_to_class8[ ( size+7 ) >>3];
else
sizeclass = runtime·size_to_class128[ ( size-1024+127 ) >> 7];
size = runtime·class_to_size[sizeclass];
s = c->alloc[sizeclass];
if ( s->freelist == nil )
s = runtime·MCache_Refill ( c , sizeclass ) ;
v = s->freelist;
next = v->next;
s->freelist = next;
s->ref++;
if ( next != nil )
PREFETCH ( next ) ;
if ( ! ( flag & FlagNoZero ) ) {
v->next = nil;
#line 161 "/home/14/ren/source/golang/go/src/pkg/runtime/malloc.goc"
if ( size > 2*sizeof ( uintptr ) && ( ( uintptr* ) v ) [1] != 0 )
runtime·memclr ( ( byte* ) v , size ) ;
}
done:
c->local_cachealloc += size;
} else {
// mcallable cache refill
void
runtime·mcacheRefill_m(void)
{
runtime·MCache_Refill(g->m->mcache, (int32)g->m->scalararg[0]);
}
