#include <type_traits>
#include <vector>
#include <memory>
-
-#include <boost/range/iterator_range.hpp>
+#include <string>
#include <sys/types.h>
#include <simgrid_config.h>
#include <xbt/base.h>
-#include <xbt/dynar.h>
-#include <xbt/dynar.hpp>
#include <xbt/mmalloc.h>
-#ifdef HAVE_MC
#include "src/xbt/mmalloc/mmprivate.h"
-#endif
+#include "src/mc/Channel.hpp"
#include <simgrid/simix.h>
#include "src/simix/popping_private.h"
#include "src/mc/mc_forward.hpp"
#include "src/mc/mc_base.h"
+#include "src/mc/RemotePtr.hpp"
#include "src/mc/AddressSpace.hpp"
#include "src/mc/mc_protocol.h"
#include "src/mc/ObjectInformation.hpp"
-// Those flags are used to track down which cached information
-// is still up to date and which information needs to be updated.
-typedef int mc_process_cache_flags_t;
-#define MC_PROCESS_CACHE_FLAG_NONE 0
-#define MC_PROCESS_CACHE_FLAG_HEAP 1
-#define MC_PROCESS_CACHE_FLAG_MALLOC_INFO 2
-#define MC_PROCESS_CACHE_FLAG_SIMIX_PROCESSES 4
namespace simgrid {
namespace mc {
class SimixProcessInformation {
public:
/** MCed address of the process */
- void* address = nullptr;
- union {
- /** (Flat) Copy of the process data structure */
- struct s_smx_process copy;
- };
+ RemotePtr<simgrid::simix::Process> address = nullptr;
+ Remote<simgrid::simix::Process> copy;
+
/** Hostname (owned by `mc_modelchecker->hostnames`) */
const char* hostname = nullptr;
std::string name;
};
/** Representation of a process
+ *
+ * This class is mixing a lot of different responsibilities and is tied
+ * to SIMIX. It should probably be split into different classes.
+ *
+ * Responsibilities:
+ *
+ * - reading from the process memory (`AddressSpace`);
+ * - accessing the system state of the process (heap, …);
+ * - storing the SIMIX state of the process;
+ * - privatization;
+ * - communication with the model-checked process;
+ * - stack unwinding;
+ * - etc.
*/
class Process final : public AddressSpace {
+private:
+ // Those flags are used to track down which cached information
+ // is still up to date and which information needs to be updated.
+ static constexpr int cache_none = 0;
+ static constexpr int cache_heap = 1;
+ static constexpr int cache_malloc = 2;
+ static constexpr int cache_simix_processes = 4;
public:
Process(pid_t pid, int sockfd);
~Process();
read_variable(name, &res, sizeof(T));
return res;
}
- char* read_string(RemotePtr<void> address) const;
+ std::string read_string(RemotePtr<char> address) const;
+ std::string read_string(RemotePtr<char> address, std::size_t len) const
+ {
+ return AddressSpace::read_string(address, len);
+ }
// Write memory:
void write_bytes(const void* buffer, size_t len, RemotePtr<void> address);
// Heap access:
xbt_mheap_t get_heap()
{
- if (!(this->cache_flags & MC_PROCESS_CACHE_FLAG_HEAP))
+ if (!(this->cache_flags_ & Process::cache_heap))
this->refresh_heap();
return this->heap.get();
}
malloc_info* get_malloc_info()
{
- if (!(this->cache_flags & MC_PROCESS_CACHE_FLAG_MALLOC_INFO))
+ if (!(this->cache_flags_ & Process::cache_malloc))
this->refresh_malloc_info();
return this->heap_info.data();
}
+
+ void clear_cache()
+ {
+ this->cache_flags_ = Process::cache_none;
+ }
+
+ Channel const& getChannel() const { return channel_; }
+ Channel& getChannel() { return channel_; }
std::vector<IgnoredRegion> const& ignored_regions() const
{
running_ = false;
}
- template<class M>
- typename std::enable_if< std::is_class<M>::value && std::is_trivial<M>::value, int >::type
- send_message(M const& m)
- {
- return MC_protocol_send(this->socket_, &m, sizeof(M));
- }
-
- int send_message(e_mc_message_type message_id)
- {
- return MC_protocol_send_simple_message(this->socket_, message_id);
- }
-
- template<class M>
- typename std::enable_if< std::is_class<M>::value && std::is_trivial<M>::value, ssize_t >::type
- receive_message(M& m)
- {
- return MC_receive_message(this->socket_, &m, sizeof(M), 0);
- }
-
- void reset_soft_dirty();
- void read_pagemap(uint64_t* pagemap, size_t start_page, size_t page_count);
-
bool privatized(ObjectInformation const& info) const
{
return privatized_ && info.executable();
void unignore_heap(void *address, size_t size);
void ignore_local_variable(const char *var_name, const char *frame_name);
- int socket() { return socket_; }
- simgrid::xbt::DynarRange<s_mc_smx_process_info> simix_processes();
+ std::vector<simgrid::mc::SimixProcessInformation>& simix_processes();
+ std::vector<simgrid::mc::SimixProcessInformation>& old_simix_processes();
+
+ /** Get a local description of a remote SIMIX process */
+ simgrid::mc::SimixProcessInformation* resolveProcessInfo(
+ simgrid::mc::RemotePtr<simgrid::simix::Process> process)
+ {
+ xbt_assert(mc_model_checker != nullptr);
+ if (!process)
+ return nullptr;
+ this->refresh_simix();
+ for (auto& process_info : this->smx_process_infos)
+ if (process_info.address == process)
+ return &process_info;
+ for (auto& process_info : this->smx_old_process_infos)
+ if (process_info.address == process)
+ return &process_info;
+ return nullptr;
+ }
+
+ /** Get a local copy of the SIMIX process structure */
+ simgrid::simix::Process* resolveProcess(simgrid::mc::RemotePtr<simgrid::simix::Process> process)
+ {
+ simgrid::mc::SimixProcessInformation* process_info =
+ this->resolveProcessInfo(process);
+ if (process_info)
+ return process_info->copy.getBuffer();
+ else
+ return nullptr;
+ }
+
+ void dumpStack();
private:
void init_memory_map_info();
void refresh_heap();
void refresh_malloc_info();
+ void refresh_simix();
private:
pid_t pid_ = -1;
- int socket_ = -1;
+ Channel channel_;
bool running_ = false;
std::vector<simgrid::xbt::VmMap> memory_map_;
RemotePtr<void> maestro_stack_start_, maestro_stack_end_;
int memory_file = -1;
std::vector<IgnoredRegion> ignored_regions_;
- int clear_refs_fd_ = -1;
- int pagemap_fd_ = -1;
bool privatized_ = false;
std::vector<s_stack_region_t> stack_areas_;
std::vector<IgnoredHeapRegion> ignored_heap_;
*/
std::vector<SimixProcessInformation> smx_old_process_infos;
+private:
/** State of the cache (which variables are up to date) */
- mc_process_cache_flags_t cache_flags = MC_PROCESS_CACHE_FLAG_NONE;
+ int cache_flags_ = Process::cache_none;
+public:
/** Address of the heap structure in the MCed process. */
void* heap_address;
/** Full-featured MC-aware libunwind address space for the process
*
- * This address space is using a mc_unw_context_t
+ * This address space is using a simgrid::mc::UnwindContext*
* (with simgrid::mc::Process* / simgrid::mc::AddressSpace*
* and unw_context_t).
*/
unw_addr_space_t unw_addr_space;
- /** Underlying libunwind addres-space
+ /** Underlying libunwind address-space
*
* The `find_proc_info`, `put_unwind_info`, `get_dyn_info_list_addr`
* operations of the native MC address space is currently delegated
void* unw_underlying_context;
};
-// TODO, remove this
-#define MC_PROCESS_FOREACH(xs, cursor, p) \
- if (! xs.empty()) \
- for (auto __it = (cursor = 0, p = &*xs.begin(), xs.begin()); \
- __it != xs.end(); ++__it, ++cursor, p = &*__it)
-
/** Open a FD to a remote process memory (`/dev/$pid/mem`)
*/
XBT_PRIVATE int open_vm(pid_t pid, int flags);