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// Copyright (C) 2012-2015 Internet Systems Consortium, Inc. ("ISC")
//
// 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/.
#include <config.h>
#include <util/memory_segment_local.h>
#include <exceptions/exceptions.h>
namespace isc {
namespace util {
void*
MemorySegmentLocal::allocate(size_t size) {
void* ptr = malloc(size);
if (ptr == NULL) {
throw std::bad_alloc();
}
allocated_size_ += size;
return (ptr);
}
void
MemorySegmentLocal::deallocate(void* ptr, size_t size) {
if (ptr == NULL) {
// Return early if NULL is passed to be deallocated (without
// modifying allocated_size, or comparing against it).
return;
}
if (size > allocated_size_) {
isc_throw(OutOfRange, "Invalid size to deallocate: " << size
<< "; currently allocated size: " << allocated_size_);
}
allocated_size_ -= size;
free(ptr);
}
bool
MemorySegmentLocal::allMemoryDeallocated() const {
return (allocated_size_ == 0 && named_addrs_.empty());
}
MemorySegment::NamedAddressResult
MemorySegmentLocal::getNamedAddressImpl(const char* name) const {
std::map<std::string, void*>::const_iterator found =
named_addrs_.find(name);
if (found != named_addrs_.end()) {
return (NamedAddressResult(true, found->second));
}
return (NamedAddressResult(false, static_cast<void*>(0)));
}
bool
MemorySegmentLocal::setNamedAddressImpl(const char* name, void* addr) {
named_addrs_[name] = addr;
return (false);
}
bool
MemorySegmentLocal::clearNamedAddressImpl(const char* name) {
const size_t n_erased = named_addrs_.erase(name);
return (n_erased != 0);
}
} // namespace util
} // namespace isc
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