vm_tools/concierge/vmm_swap_policy.proto

syntax = "proto3";

option cc_enable_arenas = true;

package vm_tools.concierge;

// A history entry for TbwTracker.
message TbwHistoryEntry {
  // The microseconds relative to Windows epoch (1601-01-01 00:00:00 UTC).
  int64 time_us = 1;
  // The written size in bytes.
  uint64 size = 2;
  // TBW is reported to UMA weekly. An entry with `reported_fence = true`
  // ensures that all prior Tbw entries have been reported.
  bool reported_fence = 3;
}

// Container for multiple TbwHistoryEntry
// The file /var/lib/vm_concierge/vmm_swap_policy/tbw_history2 is serialized
// with TbwHistoryEntryContainer.
message TbwHistoryEntryContainer {
  // The entries
  repeated TbwHistoryEntry entries = 1;
}

// A history entry for VmmSwapUsagePolicy.
message UsageHistoryEntry {
  // The microseconds relative to Windows epoch (1601-01-01 00:00:00 UTC).
  int64 start_time_us = 1;
  // The length how long the vm is swappable idle.
  int64 duration_us = 2;
  // Whether vm was shutdown while vmm-swap is enabled.
  bool is_shutdown = 3;
}

// Container for multiple UsageHistoryEntry
// The file /run/daemon-store/crosvm/<user hash>/<vm name>.vmm_swap_history is
// serialized with UsageHistoryEntryContainer.
message UsageHistoryEntryContainer {
  // The entries
  repeated UsageHistoryEntry entries = 1;
}