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std.outbuffer: remove call into GC by using appropriate type for data, tweak pre-allocation

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This commit is contained in:
Rainer Schuetze 2015-07-25 14:25:55 +02:00
parent 033cdd8568
commit 13cb3dede1
1 changed files with 6 additions and 3 deletions
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9
std/outbuffer.d
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@ -30,7 +30,9 @@ private
* OutBuffer's byte order is the format native to the computer.
* To control the byte order (endianness), use a class derived
* from OutBuffer.
* OutBuffer's internal buffer is allocated with the GC.
* OutBuffer's internal buffer is allocated with the GC. Pointers
* stored into the buffer are scanned by the GC, but you have to
* ensure proper alignment, e.g. by using alignSize((void*).sizeof).
*/
class OutBuffer
@ -80,8 +82,9 @@ class OutBuffer
//c.stdio.printf("OutBuffer.reserve: length = %d, offset = %d, nbytes = %d\n", data.length, offset, nbytes);
if (data.length < offset + nbytes)
{
data.length = (offset + nbytes) * 2;
GC.clrAttr(data.ptr, GC.BlkAttr.NO_SCAN);
void[] vdata = data;
vdata.length = (offset + nbytes + 7) * 2; // allocates as void[] to not set BlkAttr.NO_SCAN
data = cast(ubyte[])vdata;
}
}