tenfourfox/js/src/jit/ExecutableAllocator.cpp
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

75 lines
2.9 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sts=4 et sw=4 tw=99:
*
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "jit/ExecutableAllocator.h"
#include "js/MemoryMetrics.h"
using namespace js::jit;
ExecutablePool::~ExecutablePool()
{
MOZ_ASSERT(m_ionCodeBytes == 0);
MOZ_ASSERT(m_baselineCodeBytes == 0);
MOZ_ASSERT(m_regexpCodeBytes == 0);
MOZ_ASSERT(m_otherCodeBytes == 0);
m_allocator->releasePoolPages(this);
}
void
ExecutableAllocator::addSizeOfCode(JS::CodeSizes* sizes) const
{
if (m_pools.initialized()) {
for (ExecPoolHashSet::Range r = m_pools.all(); !r.empty(); r.popFront()) {
ExecutablePool* pool = r.front();
sizes->ion += pool->m_ionCodeBytes;
sizes->baseline += pool->m_baselineCodeBytes;
sizes->regexp += pool->m_regexpCodeBytes;
sizes->other += pool->m_otherCodeBytes;
sizes->unused += pool->m_allocation.size - pool->m_ionCodeBytes
- pool->m_baselineCodeBytes
- pool->m_regexpCodeBytes
- pool->m_otherCodeBytes;
}
}
}
ExecutablePool::Allocation
ExecutableAllocator::systemAlloc(size_t n)
{
void* allocation = AllocateExecutableMemory(n, ProtectionSetting::Executable);
ExecutablePool::Allocation alloc = { reinterpret_cast<char*>(allocation), n };
return alloc;
}
void
ExecutableAllocator::systemRelease(const ExecutablePool::Allocation& alloc)
{
DeallocateExecutableMemory(alloc.pages, alloc.size);
}