-/* Copyright (c) 2008-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2008-2019. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#ifndef SIMGRID_MC_ADDRESS_SPACE_H
#define SIMGRID_MC_ADDRESS_SPACE_H
-#include <cassert>
-#include <cstddef>
-#include <cstdint>
-#include <cstring>
-#include <type_traits>
-
-#include <string>
-#include <vector>
-
#include "src/mc/mc_forward.hpp"
-#include "src/mc/RemotePtr.hpp"
+#include "src/mc/remote/RemotePtr.hpp"
namespace simgrid {
namespace mc {
-/** Process index used when no process is available
- *
- * The expected behavior is that if a process index is needed it will fail.
- * */
-const int ProcessIndexMissing = -1;
-
-/** Process index used when we don't care about the process index
- * */
-const int ProcessIndexDisabled = -2;
-
-/** Constant used when any process will do.
- *
- * This is is index of the first process.
- */
-const int ProcessIndexAny = 0;
-
/** Options for read operations
*
* This is a set of flags managed with bitwise operators. Only the
public:
constexpr ReadOptions() : value_(0) {}
- constexpr operator bool() const { return value_ != 0; }
+ explicit constexpr operator bool() const { return value_ != 0; }
constexpr bool operator!() const { return value_ == 0; }
constexpr ReadOptions operator|(ReadOptions const& that) const
* * the current state of an existing process;
*
* * a snapshot.
+ *
+ * In order to support SMPI privatization, the can read the memory from the
+ * context of a given SMPI process: if specified, the code reads data from the
+ * correct SMPI privatization VMA.
*/
class AddressSpace {
private:
- Process* process_;
+ RemoteClient* process_;
+
public:
- AddressSpace(Process* process) : process_(process) {}
- virtual ~AddressSpace();
+ explicit AddressSpace(RemoteClient* process) : process_(process) {}
+ virtual ~AddressSpace() = default;
- simgrid::mc::Process* process() const { return process_; }
+ /** The process of this address space
+ *
+ * This is where we can get debug informations, memory layout, etc.
+ */
+ simgrid::mc::RemoteClient* process() const { return process_; }
/** Read data from the address space
*
* @param buffer target buffer for the data
- * @param size number of bytes
+ * @param size number of bytes to read
* @param address remote source address of the data
- * @param process_index which process (used for SMPI privatization)
* @param options
*/
- virtual const void* read_bytes(void* buffer, std::size_t size,
- RemotePtr<void> address, int process_index = ProcessIndexAny,
- ReadOptions options = ReadOptions::none()) const = 0;
+ virtual void* read_bytes(void* buffer, std::size_t size, RemotePtr<void> address,
+ ReadOptions options = ReadOptions::none()) const = 0;
/** Read a given data structure from the address space */
- template<class T> inline
- void read(T *buffer, RemotePtr<T> ptr, int process_index = ProcessIndexAny) const
- {
- this->read_bytes(buffer, sizeof(T), ptr, process_index);
- }
+ template <class T> inline void read(T* buffer, RemotePtr<T> ptr) const { this->read_bytes(buffer, sizeof(T), ptr); }
- template<class T> inline
- void read(Remote<T>& buffer, RemotePtr<T> ptr, int process_index = ProcessIndexAny) const
+ template <class T> inline void read(Remote<T>& buffer, RemotePtr<T> ptr) const
{
- this->read_bytes(buffer.getBuffer(), sizeof(T), ptr, process_index);
+ this->read_bytes(buffer.get_buffer(), sizeof(T), ptr);
}
- /** Read a given data structure from the address space */
- template<class T> inline
- Remote<T> read(RemotePtr<T> ptr, int process_index = ProcessIndexMissing) const
+ /** Read a given data structure from the address space
+ *
+ * This version returns by value.
+ */
+ template <class T> inline Remote<T> read(RemotePtr<T> ptr) const
{
Remote<T> res;
- this->read_bytes(&res, sizeof(T), ptr, process_index);
+ this->read_bytes(&res, sizeof(T), ptr);
return res;
}
+ /** Read a string of known size */
std::string read_string(RemotePtr<char> address, std::size_t len) const
{
- // TODO, use std::vector with .data() in C++17 to avoid useless copies
- std::vector<char> buffer(len);
- buffer[len] = '\0';
- this->read_bytes(buffer.data(), len, address);
- return std::string(buffer.data(), buffer.size());
+ std::string res;
+ res.resize(len);
+ this->read_bytes(&res[0], len, address);
+ return res;
}
};
