/* MessageServer_Release_x64.exe sha256 7911b15c4379625eaa12ff227708aa3a033bc6ac2cf6b34283136e3a62df25f1
 * Ghidra 12.1.2 decompiler output for 0x14007d9b0 FUN_14007d9b0
 * Pseudocode, not original source. */

void FUN_14007d9b0(longlong param_1,ulonglong param_2)

{
  longlong lVar1;
  size_t sVar2;
  code *pcVar3;
  ulonglong uVar4;
  void *_Dst;
  void *pvVar5;
  void *pvVar6;
  ulonglong uVar7;
  
  uVar7 = *(ulonglong *)(param_1 + 0x10);
  if (0xfffffffffffffff - uVar7 < param_2) {
    std::_Xlength_error("deque<T> too long");
    pcVar3 = (code *)swi(3);
    (*pcVar3)();
    return;
  }
  uVar4 = uVar7 >> 1;
  if (uVar4 < 8) {
    uVar4 = 8;
  }
  if ((param_2 < uVar4) && (uVar7 <= 0xfffffffffffffff - uVar4)) {
    param_2 = uVar4;
  }
  uVar4 = *(ulonglong *)(param_1 + 0x18) >> 2;
  _Dst = FUN_14007bf30(param_1 + 0x29,uVar7 + param_2);
  lVar1 = uVar4 * 8;
  pvVar5 = (void *)(lVar1 + *(longlong *)(param_1 + 8));
  uVar7 = (*(longlong *)(param_1 + 0x10) * 8 - (longlong)pvVar5) + *(longlong *)(param_1 + 8) &
          0xfffffffffffffff8;
  pvVar5 = memmove((void *)(lVar1 + (longlong)_Dst),pvVar5,uVar7);
  pvVar5 = (void *)((longlong)pvVar5 + uVar7);
  if (param_2 < uVar4) {
    memmove(pvVar5,*(void **)(param_1 + 8),param_2 * 8);
    pvVar5 = (void *)(param_2 * 8 + *(longlong *)(param_1 + 8));
    sVar2 = ((lVar1 - (longlong)pvVar5) + *(longlong *)(param_1 + 8) >> 3) * 8;
    pvVar5 = memmove(_Dst,pvVar5,sVar2);
    pvVar5 = (void *)((longlong)pvVar5 + sVar2);
    uVar4 = param_2;
  }
  else {
    sVar2 = (lVar1 >> 3) * 8;
    pvVar6 = memmove(pvVar5,*(void **)(param_1 + 8),sVar2);
    pvVar5 = _Dst;
    if (param_2 - uVar4 != 0) {
      memset((void *)((longlong)pvVar6 + sVar2),0,(param_2 - uVar4) * 8);
    }
  }
  if (uVar4 != 0) {
    memset(pvVar5,0,uVar4 << 3);
  }
  if (*(void **)(param_1 + 8) != (void *)0x0) {
    operator_delete(*(void **)(param_1 + 8));
  }
  *(longlong *)(param_1 + 0x10) = *(longlong *)(param_1 + 0x10) + param_2;
  *(void **)(param_1 + 8) = _Dst;
  return;
}