protected bool PrevEvent(double?minTime)
{
var v = m_MmapView;
if (m_MmapPos == MetaData.EncodedDataSizeBytes)
{
m_MmapPos = m_MmapPrevPos;
}
var pos = m_MmapPos;
var inpos = pos;
if (pos == 16)
{
return(false);
}
bool isV3 = MetaData.Version >= 3;
EventHeader headerSkip;
EventHeader.Decode(out headerSkip, v, ref pos);
pos = m_MmapPos - headerSkip.BackLink;
var resetPos = pos;
EventHeader header;
EventHeader.Decode(out header, v, ref pos);
if (minTime.HasValue && minTime > header.TimeStamp)
{
m_MmapPos = inpos;
return(false);
}
m_CurrentTime = header.TimeStamp;
switch (header.Code)
{
case EventCode.HeapCreate:
{
HeapCreateEvent ev;
HeapCreateEvent.Decode(out ev, v, ref pos);
OnHeapDestroy(ev.Id);
}
break;
case EventCode.HeapDestroy:
{
HeapDestroyEvent ev;
HeapDestroyEvent.Decode(out ev, v, ref pos);
HeapCreateEvent create_ev;
long create_pos = ev.SourceEventPos + EventHeader.SizeBytes;
HeapCreateEvent.Decode(out create_ev, v, ref create_pos);
OnHeapCreate(create_ev.Id, create_ev.NameStringIndex);
}
break;
case EventCode.HeapAddCore:
case EventCode.HeapRemoveCore:
{
HeapCoreEvent ev;
HeapCoreEvent.Decode(out ev, v, ref pos);
if (EventCode.HeapRemoveCore == header.Code)
{
OnHeapAddCore(ev.Id, ev.Address, ev.Size);
}
else
{
OnHeapRemoveCore(ev.Id, ev.Address, ev.Size);
}
}
break;
case EventCode.HeapAllocate:
{
HeapAllocEvent ev;
if (isV3)
{
HeapAllocEvent.DecodeV3(out ev, v, ref pos);
}
else
{
HeapAllocEvent.DecodePreV3(out ev, v, ref pos);
}
OnHeapFree(ev.HeapId, ev.Address, -1, 0.0); // args are bogus, we don't have that data
}
break;
case EventCode.HeapFree:
{
HeapFreeEvent ev;
if (isV3)
{
HeapFreeEvent.DecodeV3(out ev, v, ref pos);
}
else
{
HeapFreeEvent.DecodePreV3(out ev, v, ref pos);
}
long alloc_pos = ev.SourceEventPos;
EventHeader alloc_hdr;
EventHeader.Decode(out alloc_hdr, v, ref alloc_pos);
HeapAllocEvent alloc_ev;
if (isV3)
{
HeapAllocEvent.DecodeV3(out alloc_ev, v, ref alloc_pos);
}
else
{
HeapAllocEvent.DecodePreV3(out alloc_ev, v, ref alloc_pos);
}
OnHeapAllocate(alloc_ev.HeapId, alloc_ev.Address, alloc_ev.Size, alloc_hdr.Scope, alloc_hdr.ScopeStringIndex, alloc_hdr.BackTraceIndex, alloc_hdr.TimeStamp);
}
break;
case EventCode.HeapReallocate:
{
HeapReallocEvent ev;
if (isV3)
{
HeapReallocEvent.DecodeV3(out ev, v, ref pos);
}
else
{
HeapReallocEvent.DecodePreV3(out ev, v, ref pos);
}
// Restore preceding alloc which can have been either an alloc or another reallocation
long old_pos = ev.SourceEventPos;
EventHeader old_hdr;
EventHeader.Decode(out old_hdr, v, ref old_pos);
// Undo realloc allocation part
OnHeapFree(ev.HeapId, ev.NewAddress, old_hdr.BackTraceIndex, old_hdr.TimeStamp);
switch (old_hdr.Code)
{
case EventCode.HeapAllocate:
{
HeapAllocEvent alloc_ev;
if (isV3)
{
HeapAllocEvent.DecodeV3(out alloc_ev, v, ref old_pos);
}
else
{
HeapAllocEvent.DecodePreV3(out alloc_ev, v, ref old_pos);
}
OnHeapAllocate(alloc_ev.HeapId, alloc_ev.Address, alloc_ev.Size, old_hdr.Scope, old_hdr.ScopeStringIndex, old_hdr.BackTraceIndex, old_hdr.TimeStamp);
}
break;
case EventCode.HeapReallocate:
{
HeapReallocEvent realloc_ev;
if (isV3)
{
HeapReallocEvent.DecodeV3(out realloc_ev, v, ref old_pos);
}
else
{
HeapReallocEvent.DecodePreV3(out realloc_ev, v, ref old_pos);
}
OnHeapAllocate(realloc_ev.HeapId, realloc_ev.NewAddress, realloc_ev.NewSize, old_hdr.Scope, old_hdr.ScopeStringIndex, old_hdr.BackTraceIndex, old_hdr.TimeStamp);
}
break;
default:
throw new IOException("Unexpected source event for reallocation " + old_hdr.Code);
}
}
break;
case EventCode.AddressAllocate:
{
AllocateAddressEvent ev;
AllocateAddressEvent.Decode(out ev, v, ref pos);
OnAddressFree(ev.Address);
}
break;
case EventCode.AddressFree:
{
FreeAddressEvent ev;
FreeAddressEvent.Decode(out ev, v, ref pos);
long alloc_pos = ev.SourceEventPos + EventHeader.SizeBytes;
AllocateAddressEvent alloc_ev;
AllocateAddressEvent.Decode(out alloc_ev, v, ref alloc_pos);
OnAddressAllocate(alloc_ev.Address, alloc_ev.Size, alloc_ev.NameStringIndex);
break;
}
case EventCode.VirtualCommit:
{
VirtualCommitEvent ev;
VirtualCommitEvent.Decode(out ev, v, ref pos);
OnVirtualDecommit(ev.Address, ev.Size);
}
break;
case EventCode.VirtualDecommit:
{
VirtualCommitEvent ev;
VirtualCommitEvent.Decode(out ev, v, ref pos);
OnVirtualCommit(ev.Address, ev.Size);
}
break;
default:
throw new IOException(String.Format("Unexpected event code {0} in stream at position {1}", header.Code, m_MmapPos));
}
m_MmapPos = resetPos;
return(true);
}
protected bool NextEvent(double?maxTime)
{
var v = m_MmapView;
var pos = m_MmapPos;
if (pos == MetaData.EncodedDataSizeBytes)
{
return(false);
}
m_MmapPrevPos = pos;
EventHeader header;
EventHeader.Decode(out header, v, ref pos);
bool hasHeapIds = MetaData.Version >= 3;
if (maxTime.HasValue && header.TimeStamp > maxTime.Value)
{
return(false);
}
m_CurrentTime = header.TimeStamp;
switch (header.Code)
{
case EventCode.HeapCreate:
{
HeapCreateEvent ev;
HeapCreateEvent.Decode(out ev, v, ref pos);
OnHeapCreate(ev.Id, ev.NameStringIndex);
}
break;
case EventCode.HeapDestroy:
{
HeapDestroyEvent ev;
HeapDestroyEvent.Decode(out ev, v, ref pos);
OnHeapDestroy(ev.Id);
}
break;
case EventCode.HeapAddCore:
case EventCode.HeapRemoveCore:
{
HeapCoreEvent ev;
HeapCoreEvent.Decode(out ev, v, ref pos);
if (EventCode.HeapAddCore == header.Code)
{
OnHeapAddCore(ev.Id, ev.Address, ev.Size);
}
else
{
OnHeapRemoveCore(ev.Id, ev.Address, ev.Size);
}
}
break;
case EventCode.HeapAllocate:
{
HeapAllocEvent ev;
if (hasHeapIds)
{
HeapAllocEvent.DecodeV3(out ev, v, ref pos);
}
else
{
HeapAllocEvent.DecodePreV3(out ev, v, ref pos);
}
OnHeapAllocate(ev.HeapId, ev.Address, ev.Size, header.Scope, header.ScopeStringIndex, header.BackTraceIndex, header.TimeStamp);
}
break;
case EventCode.HeapFree:
{
HeapFreeEvent ev;
if (hasHeapIds)
{
HeapFreeEvent.DecodeV3(out ev, v, ref pos);
}
else
{
HeapFreeEvent.DecodePreV3(out ev, v, ref pos);
}
OnHeapFree(ev.HeapId, ev.Address, header.BackTraceIndex, header.TimeStamp);
}
break;
case EventCode.HeapReallocate:
{
HeapReallocEvent ev;
if (hasHeapIds)
{
HeapReallocEvent.DecodeV3(out ev, v, ref pos);
}
else
{
HeapReallocEvent.DecodePreV3(out ev, v, ref pos);
}
OnHeapFree(ev.HeapId, ev.OldAddress, header.BackTraceIndex, header.TimeStamp);
OnHeapAllocate(ev.HeapId, ev.NewAddress, ev.NewSize, header.Scope, header.ScopeStringIndex, header.BackTraceIndex, header.TimeStamp);
}
break;
case EventCode.AddressAllocate:
{
AllocateAddressEvent ev;
AllocateAddressEvent.Decode(out ev, v, ref pos);
OnAddressAllocate(ev.Address, ev.Size, ev.NameStringIndex);
}
break;
case EventCode.AddressFree:
{
FreeAddressEvent ev;
FreeAddressEvent.Decode(out ev, v, ref pos);
OnAddressFree(ev.Address);
}
break;
case EventCode.VirtualCommit:
case EventCode.VirtualDecommit:
{
VirtualCommitEvent ev;
VirtualCommitEvent.Decode(out ev, v, ref pos);
if (header.Code == EventCode.VirtualCommit)
{
OnVirtualCommit(ev.Address, ev.Size);
}
else
{
OnVirtualDecommit(ev.Address, ev.Size);
}
}
break;
default:
throw new IOException(String.Format("Unexpected event code {0} in stream at position {1}", header.Code, m_MmapPos));
}
m_MmapPos = pos;
return(true);
}