gfx/layers/TransactionIdAllocator.h
author Ted Mielczarek <ted@mielczarek.org>
Fri, 06 Jan 2017 05:57:10 -0500
changeset 328603 dedf4f49b3756b09986e78dc5519a291b81f133f
parent 293404 2f5f51545d0e466479ec6fdf8b89af72685dfc6d
child 343065 69bc1e04bb2cab5b2880e23c8ca49a5670af1538
permissions -rw-r--r--
bug 1329320 - replace makecab with rust-makecab in symbolstore. r=gps It turns out that running makecab to compress PDB files takes a significant amount of time in the buildsymbols step. I wrote an implementation of makecab in Rust that implements only the subset of features we use and it's significantly faster: https://github.com/luser/rust-makecab This patch adds a makecab check to moz.configure, adds a release build of the makecab binary to the Windows tooltool manifests, points the build at it from mozconfig.win-common, and changes symbolstore.py to use MAKECAB from substs instead of calling `makecab.exe` directly. MozReview-Commit-ID: 76FHLIZFCXS

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef GFX_TRANSACTION_ID_ALLOCATOR_H
#define GFX_TRANSACTION_ID_ALLOCATOR_H

#include "nsISupportsImpl.h"
#include "mozilla/TimeStamp.h"

namespace mozilla {
namespace layers {

class TransactionIdAllocator {
protected:
  virtual ~TransactionIdAllocator() {}

public:
  NS_INLINE_DECL_REFCOUNTING(TransactionIdAllocator)

  /**
   * Allocate a unique id number for the current refresh tick, can
   * only be called while IsInRefresh().
   *
   * If too many id's are allocated without being returned then
   * the refresh driver will suspend until they catch up.
   */
  virtual uint64_t GetTransactionId() = 0;

  /**
   * Return the transaction id that for the last non-revoked transaction.
   * This allows the caller to tell whether a composite was triggered by
   * a paint that occurred after a call to TransactionId().
   */
  virtual uint64_t LastTransactionId() const = 0;

  /**
   * Notify that all work (including asynchronous composites)
   * for a given transaction id has been completed.
   *
   * If the refresh driver has been suspended because
   * of having too many outstanding id's, then this may
   * resume it.
   */
  virtual void NotifyTransactionCompleted(uint64_t aTransactionId) = 0;

  /**
   * Revoke a transaction id that isn't needed to track
   * completion of asynchronous work. This is similar
   * to NotifyTransactionCompleted except avoids
   * return ordering issues.
   */
  virtual void RevokeTransactionId(uint64_t aTransactionId) = 0;

  /**
   * Get the start time of the current refresh tick.
   */
  virtual mozilla::TimeStamp GetTransactionStart() = 0;
};

} // namespace layers
} // namespace mozilla


#endif /* GFX_TRANSACTION_ID_ALLOCATOR_H */