mfbt/SharedLibrary.h
author Jan de Mooij <jdemooij@mozilla.com>
Sat, 12 Jan 2019 10:50:04 +0000
changeset 453631 cfa1c48c717048f00eb4811b5719cd716eb1e5b3
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
child 454520 5f4630838d46dd81dadb13220a4af0da9e23a619
permissions -rw-r--r--
Bug 1518753 part 5 - Stop using JSProtoKey for initial shapes. r=tcampbell I added this optimization in bug 1299107 to share more shapes across compartments. Unfortunately this doesn't play well with same-compartment realms (ICs can misbehave) because it relies on compartments being isolated from each other. I think we should remove this optimization: * Fixing the IC issue is impossible without deoptimizing everything. * I added it mainly for chrome globals. The shared-JSM-global work has eliminated the need for this there. * Same-compartment realms win memory back by eliminating CCWs etc. * It's quite a lot of complicated code. Differential Revision: https://phabricator.services.mozilla.com/D16170

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */

/* Path charset agnostic wrappers for prlink.h. */

#ifndef mozilla_SharedLibrary_h
#define mozilla_SharedLibrary_h

#ifdef MOZILLA_INTERNAL_API

#include "prlink.h"
#include "mozilla/Char16.h"

namespace mozilla {

//
// Load the specified library.
//
// @param aPath  path to the library
// @param aFlags takes PR_LD_* flags (see prlink.h)
//
inline PRLibrary*
#ifdef XP_WIN
LoadLibraryWithFlags(char16ptr_t aPath, PRUint32 aFlags = 0)
#else
LoadLibraryWithFlags(const char* aPath, PRUint32 aFlags = 0)
#endif
{
  PRLibSpec libSpec;
#ifdef XP_WIN
  libSpec.type = PR_LibSpec_PathnameU;
  libSpec.value.pathname_u = aPath;
#else
  libSpec.type = PR_LibSpec_Pathname;
  libSpec.value.pathname = aPath;
#endif
  return PR_LoadLibraryWithFlags(libSpec, aFlags);
}

} /* namespace mozilla */

#endif /* MOZILLA_INTERNAL_API */

#endif /* mozilla_SharedLibrary_h */