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Diffstat (limited to 'lib/Core/MemoryManager.cpp')
-rw-r--r-- | lib/Core/MemoryManager.cpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/lib/Core/MemoryManager.cpp b/lib/Core/MemoryManager.cpp new file mode 100644 index 00000000..cec7b7d1 --- /dev/null +++ b/lib/Core/MemoryManager.cpp @@ -0,0 +1,69 @@ +//===-- MemoryManager.cpp -------------------------------------------------===// +// +// The KLEE Symbolic Virtual Machine +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "Common.h" + +#include "CoreStats.h" +#include "Memory.h" +#include "MemoryManager.h" + +#include "klee/ExecutionState.h" +#include "klee/Expr.h" +#include "klee/Solver.h" + +#include "llvm/Support/CommandLine.h" + +using namespace klee; + +/***/ + +MemoryManager::~MemoryManager() { + while (!objects.empty()) { + MemoryObject *mo = objects.back(); + objects.pop_back(); + delete mo; + } +} + +MemoryObject *MemoryManager::allocate(uint64_t size, bool isLocal, bool isGlobal, + const llvm::Value *allocSite) { + if (size>10*1024*1024) { + klee_warning_once(0, "failing large alloc: %u bytes", (unsigned) size); + return 0; + } + uint64_t address = (uint64_t) (unsigned long) malloc((unsigned) size); + if (!address) + return 0; + + ++stats::allocations; + MemoryObject *res = new MemoryObject(address, size, isLocal, isGlobal, false, + allocSite); + objects.push_back(res); + return res; +} + +MemoryObject *MemoryManager::allocateFixed(uint64_t address, uint64_t size, + const llvm::Value *allocSite) { + for (objects_ty::iterator it = objects.begin(), ie = objects.end(); + it != ie; ++it) { + MemoryObject *mo = *it; + assert(!(address+size > mo->address && address < mo->address+mo->size) && + "allocated an overlapping object"); + } + + ++stats::allocations; + MemoryObject *res = new MemoryObject(address, size, false, true, true, + allocSite); + objects.push_back(res); + return res; +} + +void MemoryManager::deallocate(const MemoryObject *mo) { + assert(0); +} |