CFrameSnapshotManager::CreateEmptySnapshot

/* CFrameSnapshotManager::CreateEmptySnapshot(int, int) */

CFrameSnapshot * __thiscall
CFrameSnapshotManager::CreateEmptySnapshot(CFrameSnapshotManager *this,int param_1,int param_2)

{
  CFrameSnapshotManager *pCVar1;
  uint uVar2;
  uint uVar3;
  CFrameSnapshot *this_00;
  void *pvVar4;
  undefined4 *puVar5;
  int iVar6;
  CFrameSnapshot *local_20 [4];
  
  local_20[0] = (CFrameSnapshot *)0x0;
  uVar3 = ThreadGetCurrentId();
  pCVar1 = this + 4;
  if (uVar3 == *(uint *)(this + 4)) {
LAB_001f2583:
    *(int *)(this + 8) = *(int *)(this + 8) + 1;
  }
  else {
    LOCK();
    uVar2 = *(uint *)pCVar1;
    if (uVar2 == 0) {
      *(uint *)pCVar1 = uVar3;
    }
    UNLOCK();
    if (uVar2 == 0) goto LAB_001f2583;
    CThreadFastMutex::Lock((uint)pCVar1,uVar3);
  }
                    /* try { // try from 001f259b to 001f259f has its CatchHandler @ 001f26e7 */
  this_00 = (CFrameSnapshot *)
            CUtlMemoryPool::Alloc((CUtlMemoryPool *)CFrameSnapshot::s_Allocator,0x3c);
  CFrameSnapshot::CFrameSnapshot(this_00);
  LOCK();
  *(int *)(this_00 + 0x38) = *(int *)(this_00 + 0x38) + 1;
  UNLOCK();
  *(int *)(this + 8) = *(int *)(this + 8) + -1;
  if (*(int *)(this + 8) == 0) {
    LOCK();
    *(uint *)pCVar1 = 0;
    UNLOCK();
  }
  *(int *)(this_00 + 0xc) = param_2;
  *(int *)(this_00 + 4) = param_1;
  uVar3 = 0xffffffff;
  *(undefined4 *)(this_00 + 0x14) = 0;
  *(undefined4 *)(this_00 + 0x10) = 0;
  *(undefined4 *)(this_00 + 0x18) = 0;
  if ((uint)param_2 < 0xaa00001) {
    uVar3 = param_2 * 0xc;
  }
  local_20[0] = this_00;
  pvVar4 = operator_new__(uVar3);
  *(void **)(this_00 + 8) = pvVar4;
  iVar6 = 0;
  puVar5 = *(undefined4 **)(local_20[0] + 8);
  if (0 < param_2) {
    do {
      iVar6 = iVar6 + 1;
      *puVar5 = 0;
      puVar5[1] = 0xffffffff;
      puVar5[2] = 0;
      puVar5 = puVar5 + 3;
    } while (iVar6 != param_2);
  }
  uVar3 = ThreadGetCurrentId();
  if (uVar3 != *(uint *)(this + 4)) {
    LOCK();
    uVar2 = *(uint *)pCVar1;
    if (uVar2 == 0) {
      *(uint *)pCVar1 = uVar3;
    }
    UNLOCK();
    if (uVar2 != 0) {
      CThreadFastMutex::Lock((uint)pCVar1,uVar3);
      goto LAB_001f265d;
    }
  }
  *(int *)(this + 8) = *(int *)(this + 8) + 1;
LAB_001f265d:
                    /* try { // try from 001f2672 to 001f2676 has its CatchHandler @ 001f2701 */
  uVar3 = CUtlLinkedList<CFrameSnapshot*,unsigned_short,false,unsigned_short,CUtlMemory<UtlLinkedListElem_t<CFrameSnapshot*,unsigned_short>,unsigned_short>>
          ::InsertBefore((CUtlLinkedList<CFrameSnapshot*,unsigned_short,false,unsigned_short,CUtlMemory<UtlLinkedListElem_t<CFrameSnapshot*,unsigned_short>,unsigned_short>>
                          *)(this + 0xc),0xffff,local_20);
  LOCK();
  *(uint *)local_20[0] = uVar3 & 0xffff;
  UNLOCK();
  *(int *)(this + 8) = *(int *)(this + 8) + -1;
  if (*(int *)(this + 8) == 0) {
    LOCK();
    *(uint *)pCVar1 = 0;
    UNLOCK();
  }
  return local_20[0];
}