/*
- * Copyright 2015 Facebook, Inc.
+ * Copyright 2016 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* limitations under the License.
*/
-#ifndef FOLLY_INDEXEDMEMPOOL_H
-#define FOLLY_INDEXEDMEMPOOL_H
+#pragma once
#include <type_traits>
#include <stdint.h>
#include <assert.h>
-#include <unistd.h>
-#include <sys/mman.h>
#include <boost/noncopyable.hpp>
#include <folly/AtomicStruct.h>
#include <folly/detail/CacheLocality.h>
+#include <folly/portability/SysMman.h>
+#include <folly/portability/Unistd.h>
// Ignore shadowing warnings within this file, so includers can use -Wshadow.
#pragma GCC diagnostic push
static constexpr uint32_t maxIndexForCapacity(uint32_t capacity) {
// index of uint32_t(-1) == UINT32_MAX is reserved for isAllocated tracking
- return std::min(uint64_t(capacity) + (NumLocalLists - 1) * LocalListLimit,
- uint64_t(uint32_t(-1) - 1));
+ return uint32_t(std::min(
+ uint64_t(capacity) + (NumLocalLists - 1) * LocalListLimit,
+ uint64_t(uint32_t(-1) - 1)));
}
static constexpr uint32_t capacityForMaxIndex(uint32_t maxIndex) {
, globalHead_(TaggedPtr{})
{
const size_t needed = sizeof(Slot) * (actualCapacity_ + 1);
- long pagesize = sysconf(_SC_PAGESIZE);
+ size_t pagesize = sysconf(_SC_PAGESIZE);
mmapLength_ = ((needed - 1) & ~(pagesize - 1)) + pagesize;
assert(needed <= mmapLength_ && mmapLength_ < needed + pagesize);
assert((mmapLength_ % pagesize) == 0);
auto slot = reinterpret_cast<const Slot*>(
reinterpret_cast<const char*>(elem) - offsetof(Slot, elem));
- auto rv = slot - slots_;
+ auto rv = uint32_t(slot - slots_);
// this assert also tests that rv is in range
assert(elem == &(*this)[rv]);
/// raw storage, only 1..min(size_,actualCapacity_) (inclusive) are
/// actually constructed. Note that slots_[0] is not constructed or used
- Slot* FOLLY_ALIGN_TO_AVOID_FALSE_SHARING slots_;
+ FOLLY_ALIGN_TO_AVOID_FALSE_SHARING Slot* slots_;
/// use AccessSpreader to find your list. We use stripes instead of
/// thread-local to avoid the need to grow or shrink on thread start
/// this is the head of a list of node chained by globalNext, that are
/// themselves each the head of a list chained by localNext
- AtomicStruct<TaggedPtr,Atom> FOLLY_ALIGN_TO_AVOID_FALSE_SHARING globalHead_;
+ FOLLY_ALIGN_TO_AVOID_FALSE_SHARING AtomicStruct<TaggedPtr,Atom> globalHead_;
///////////// private methods
} // namespace folly
# pragma GCC diagnostic pop
-#endif