#ifndef MC_PROCESS_H
#define MC_PROCESS_H
+#include <stdbool.h>
+#include <sys/types.h>
+
#include "simgrid_config.h"
#include <sys/types.h>
+#include <xbt/mmalloc.h>
+
+#ifdef HAVE_MC
+#include "xbt/mmalloc/mmprivate.h"
+#endif
+
+#include "simix/popping_private.h"
+#include "simix/smx_private.h"
+
#include "mc_forward.h"
+#include "mc_mmalloc.h" // std_heap
#include "mc_memory_map.h"
+#include "mc_address_space.h"
+#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;
+// 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 struct s_mc_smx_process_info s_mc_smx_process_info_t, *mc_smx_process_info_t;
+
/** 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;
+ int socket;
+ int status;
+ bool running;
memory_map_t memory_map;
void *maestro_stack_start, *maestro_stack_end;
- char *libsimgrid_path;
mc_object_info_t libsimgrid_info;
mc_object_info_t binary_info;
- mc_object_info_t object_infos[2];
+ mc_object_info_t* object_infos;
size_t object_infos_size;
+ int memory_file;
+
+ /** Copy of `simix_global->process_list`
+ *
+ * See mc_smx.c.
+ */
+ xbt_dynar_t smx_process_infos;
+
+ /** Copy of `simix_global->process_to_destroy`
+ *
+ * See mc_smx.c.
+ */
+ 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;
+
+ /** Address of the heap structure in the MCed process. */
+ void* heap_address;
+
+ /** Copy of the heap structure of the process
+ *
+ * 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.
+ */
+ xbt_mheap_t heap;
+
+ /** Copy of the allocation info structure
+ *
+ * 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.
+ */
+ malloc_info* heap_info;
+
+ // ***** Libunwind-data
+
+ /** Full-featured MC-aware libunwind address space for the process
+ *
+ * This address space is using a mc_unw_context_t
+ * (with mc_process_t/mc_address_space_t and unw_context_t).
+ */
+ unw_addr_space_t unw_addr_space;
+
+ /** Underlying libunwind addres-space
+ *
+ * The `find_proc_info`, `put_unwind_info`, `get_dyn_info_list_addr`
+ * operations of the native MC address space is currently delegated
+ * to this address space (either the local or a ptrace unwinder).
+ */
+ unw_addr_space_t unw_underlying_addr_space;
+
+ /** The corresponding context
+ */
+ void* unw_underlying_context;
+
+ xbt_dynar_t checkpoint_ignore;
};
-void MC_process_init(mc_process_t process, pid_t pid);
+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);
-mc_object_info_t MC_process_find_object_info(mc_process_t process, void* ip);
-dw_frame_t MC_process_find_function(mc_process_t process, void* ip);
+/** 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
+ */
+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);
+
+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_END_DECL()
