#include <stdbool.h>
#include <sys/types.h>
-#include "simgrid_config.h"
+#include <vector>
+#include "simgrid_config.h"
#include <sys/types.h>
#include <xbt/mmalloc.h>
#include "xbt/mmalloc/mmprivate.h"
#endif
+#include <simgrid/simix.h>
#include "simix/popping_private.h"
#include "simix/smx_private.h"
#include "mc_forward.h"
+#include "mc_base.h"
#include "mc_mmalloc.h" // std_heap
#include "mc_memory_map.h"
-#include "mc_address_space.h"
+#include "AddressSpace.hpp"
#include "mc_protocol.h"
-SG_BEGIN_DECL()
-
-int MC_process_vm_open(pid_t pid, int flags);
-
-typedef enum {
- MC_PROCESS_NO_FLAG = 0,
- MC_PROCESS_SELF_FLAG = 1,
-} e_mc_process_flags_t;
+typedef int mc_process_flags_t;
+#define MC_PROCESS_NO_FLAG 0
+#define MC_PROCESS_SELF_FLAG 1
// Those flags are used to track down which cached information
// is still up to date and which information needs to be updated.
-typedef enum {
- MC_PROCESS_CACHE_FLAG_HEAP = 1,
- MC_PROCESS_CACHE_FLAG_MALLOC_INFO = 2,
- MC_PROCESS_CACHE_FLAG_SIMIX_PROCESSES = 4,
-} e_mc_process_cache_flags_t ;
+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
typedef struct s_mc_smx_process_info s_mc_smx_process_info_t, *mc_smx_process_info_t;
+namespace simgrid {
+namespace mc {
+
+struct IgnoredRegion {
+ std::uint64_t addr;
+ size_t size;
+};
+
/** Representation of a process
*/
-struct s_mc_process {
- s_mc_address_space_t address_space;
- e_mc_process_flags_t process_flags;
- pid_t pid;
+class Process : public AddressSpace {
+public:
+ Process(pid_t pid, int sockfd);
+ ~Process();
+
+ bool is_self() const
+ {
+ return this->process_flags & MC_PROCESS_SELF_FLAG;
+ }
+
+ // Read memory:
+ const void* read_bytes(void* buffer, std::size_t size,
+ remote_ptr<void> address, int process_index = ProcessIndexAny,
+ ReadMode mode = Normal) const MC_OVERRIDE;
+ void read_variable(const char* name, void* target, size_t size) const;
+ template<class T>
+ T read_variable(const char *name) const
+ {
+ static_assert(std::is_trivial<T>::value, "Cannot read a non-trivial type");
+ T res;
+ read_variable(name, &res, sizeof(T));
+ return res;
+ }
+ char* read_string(remote_ptr<void> address) const;
+
+ // Write memory:
+ void write_bytes(const void* buffer, size_t len, remote_ptr<void> address);
+ void clear_bytes(remote_ptr<void> address, size_t len);
+
+ // Debug information:
+ mc_object_info_t find_object_info(remote_ptr<void> addr) const;
+ mc_object_info_t find_object_info_exec(remote_ptr<void> addr) const;
+ mc_object_info_t find_object_info_rw(remote_ptr<void> addr) const;
+ dw_frame_t find_function(remote_ptr<void> ip) const;
+ dw_variable_t find_variable(const char* name) const;
+
+ // Heap access:
+ xbt_mheap_t get_heap()
+ {
+ if (!(this->cache_flags & MC_PROCESS_CACHE_FLAG_HEAP))
+ this->refresh_heap();
+ return this->heap;
+ }
+ malloc_info* get_malloc_info()
+ {
+ if (!(this->cache_flags & MC_PROCESS_CACHE_FLAG_MALLOC_INFO))
+ this->refresh_malloc_info();
+ return this->heap_info;
+ }
+
+ std::vector<IgnoredRegion> const& ignored_regions() const
+ {
+ return ignored_regions_;
+ }
+ void ignore_region(std::uint64_t address, std::size_t size);
+
+ pid_t pid() const { return pid_; }
+
+private:
+ void init_memory_map_info();
+ void refresh_heap();
+ void refresh_malloc_info();
+private:
+ mc_process_flags_t process_flags;
+ pid_t pid_;
+public: // to be private
int socket;
int status;
bool running;
xbt_dynar_t smx_old_process_infos;
/** State of the cache (which variables are up to date) */
- e_mc_process_cache_flags_t cache_flags;
+ mc_process_cache_flags_t cache_flags;
/** Address of the heap structure in the MCed process. */
void* heap_address;
*
* This is refreshed with the `MC_process_refresh` call.
* This is not used if the process is the current one:
- * use `MC_process_get_heap_info` in order to use it.
+ * use `get_heap_info()` in order to use it.
*/
xbt_mheap_t heap;
*
* This is refreshed with the `MC_process_refresh` call.
* This is not used if the process is the current one:
- * use `MC_process_get_malloc_info` in order to use it.
+ * use `get_malloc_info()` in order to use it.
*/
malloc_info* heap_info;
*/
void* unw_underlying_context;
- xbt_dynar_t checkpoint_ignore;
+private:
+ std::vector<IgnoredRegion> ignored_regions_;
};
-bool MC_is_process(mc_address_space_t p);
-
-void MC_process_init(mc_process_t process, pid_t pid, int sockfd);
-void MC_process_clear(mc_process_t process);
-
-/** Refresh the information about the process
- *
- * Do not use direclty, this is used by the getters when appropriate
- * in order to have fresh data.
- */
-void MC_process_refresh_heap(mc_process_t process);
-
-/** Refresh the information about the process
- *
- * Do not use direclty, this is used by the getters when appropriate
- * in order to have fresh data.
- * */
-void MC_process_refresh_malloc_info(mc_process_t process);
-
-static inline
-bool MC_process_is_self(mc_process_t process)
-{
- return process->process_flags & MC_PROCESS_SELF_FLAG;
-}
-
-/* Process memory access: */
-
-/** Read data from a process memory
- *
- * @param process the process
- * @param local local memory address (destination)
- * @param remote target process memory address (source)
- * @param len data size
- */
-const void* MC_process_read(mc_process_t process,
- e_adress_space_read_flags_t flags,
- void* local, const void* remote, size_t len,
- int process_index);
-
-// Simplified versions/wrappers (whould be moved in mc_address_space):
-const void* MC_process_read_simple(mc_process_t process,
- void* local, const void* remote, size_t len);
-const void* MC_process_read_dynar_element(mc_process_t process,
- void* local, const void* remote_dynar, size_t i, size_t len);
-unsigned long MC_process_read_dynar_length(mc_process_t process, const void* remote_dynar);
-
-/** Write data to a process memory
- *
- * @param process the process
- * @param local local memory address (source)
- * @param remote target process memory address (target)
- * @param len data size
+/** Open a FD to a remote process memory (`/dev/$pid/mem`)
*/
-void MC_process_write(mc_process_t process, const void* local, void* remote, size_t len);
-
-void MC_process_clear_memory(mc_process_t process, void* remote, size_t len);
-
-/* Functions, variables of the process: */
-
-mc_object_info_t MC_process_find_object_info(mc_process_t process, const void* addr);
-mc_object_info_t MC_process_find_object_info_exec(mc_process_t process, const void* addr);
-mc_object_info_t MC_process_find_object_info_rw(mc_process_t process, const void* addr);
+int open_vm(pid_t pid, int flags);
-dw_frame_t MC_process_find_function(mc_process_t process, const void* ip);
-
-void MC_process_read_variable(mc_process_t process, const char* name, void* target, size_t size);
-char* MC_process_read_string(mc_process_t, void* address);
-
-static inline xbt_mheap_t MC_process_get_heap(mc_process_t process)
-{
- if (MC_process_is_self(process))
- return std_heap;
- if (!(process->cache_flags & MC_PROCESS_CACHE_FLAG_HEAP))
- MC_process_refresh_heap(process);
- return process->heap;
}
-
-static inline malloc_info* MC_process_get_malloc_info(mc_process_t process)
-{
- if (MC_process_is_self(process))
- return std_heap->heapinfo;
- if (!(process->cache_flags & MC_PROCESS_CACHE_FLAG_MALLOC_INFO))
- MC_process_refresh_malloc_info(process);
- return process->heap_info;
}
-/** Find (one occurence of) the named variable definition
- */
-dw_variable_t MC_process_find_variable_by_name(mc_process_t process, const char* name);
+SG_BEGIN_DECL()
+
+XBT_INTERNAL void MC_invalidate_cache(void);
SG_END_DECL()
