#include "simgrid_config.h"
#include <stdio.h>
+#include <stdbool.h>
#ifndef WIN32
#include <sys/mman.h>
#endif
#include "xbt/function_types.h"
#include "xbt/mmalloc.h"
#include "../simix/smx_private.h"
+#include "../xbt/mmalloc/mmprivate.h"
#include "xbt/automaton.h"
#include "xbt/hash.h"
#include "msg/msg.h"
#include "msg/datatypes.h"
#include "xbt/strbuff.h"
#include "xbt/parmap.h"
+#include "mc_mmu.h"
+
+SG_BEGIN_DECL()
typedef struct s_dw_frame s_dw_frame_t, *dw_frame_t;
typedef struct s_mc_function_index_item s_mc_function_index_item_t, *mc_function_index_item_t;
void *data;
// Size of the data region:
size_t size;
+ // For per-page snapshots, this is an array to the number of
+ size_t* page_numbers;
} s_mc_mem_region_t, *mc_mem_region_t;
+static inline __attribute__ ((always_inline))
+bool mc_region_contain(mc_mem_region_t region, void* p)
+{
+ return p >= region->start_addr &&
+ p < (void*)((char*) region->start_addr + region->size);
+}
+
+/** Ignored data
+ *
+ * Some parts of the snapshot are ignored by zeroing them out: the real
+ * values is stored here.
+ * */
+typedef struct s_mc_snapshot_ignored_data {
+ void* start;
+ size_t size;
+ void* data;
+} s_mc_snapshot_ignored_data_t, *mc_snapshot_ignored_data_t;
+
typedef struct s_mc_snapshot{
size_t heap_bytes_used;
mc_mem_region_t regions[NB_REGIONS];
- int nb_processes;
+ xbt_dynar_t enabled_processes;
+ mc_mem_region_t* privatization_regions;
+ int privatization_index;
size_t *stack_sizes;
xbt_dynar_t stacks;
xbt_dynar_t to_ignore;
uint64_t hash;
+ xbt_dynar_t ignored_data;
} s_mc_snapshot_t, *mc_snapshot_t;
+mc_mem_region_t mc_get_snapshot_region(void* addr, mc_snapshot_t snapshot);
+
+static inline __attribute__ ((always_inline))
+mc_mem_region_t mc_get_region_hinted(void* addr, mc_snapshot_t snapshot, mc_mem_region_t region)
+{
+ if (mc_region_contain(region, addr))
+ return region;
+ else
+ return mc_get_snapshot_region(addr, snapshot);
+}
+
/** Information about a given stack frame
*
*/
typedef struct s_mc_snapshot_stack{
xbt_dynar_t local_variables;
- void *stack_pointer;
- void *real_address;
xbt_dynar_t stack_frames; // mc_stack_frame_t
}s_mc_snapshot_stack_t, *mc_snapshot_stack_t;
size_t size;
}s_mc_checkpoint_ignore_region_t, *mc_checkpoint_ignore_region_t;
+static void* mc_snapshot_get_heap_end(mc_snapshot_t snapshot);
+
mc_snapshot_t SIMIX_pre_mc_snapshot(smx_simcall_t simcall);
mc_snapshot_t MC_take_snapshot(int num_state);
void MC_restore_snapshot(mc_snapshot_t);
void MC_free_snapshot(mc_snapshot_t);
-/** \brief Translate a pointer from process address space to snapshot address space
- *
- * The address space contains snapshot of the main/application memory:
- * this function finds the address in a given snaphot for a given
- * real/application address.
- *
- * For read only memory regions and other regions which are not int the
- * snapshot, the address is not changed.
- *
- * \param addr Application address
- * \param snapshot The snapshot of interest (if NULL no translation is done)
- * \return Translated address in the snapshot address space
- * */
-void* mc_translate_address(uintptr_t addr, mc_snapshot_t snapshot);
+int mc_important_snapshot(mc_snapshot_t snapshot);
-/** \brief Translate a pointer from the snapshot address space to the application address space
- *
- * This is the inverse of mc_translate_address.
+size_t* mc_take_page_snapshot_region(void* data, size_t page_count, uint64_t* pagemap, size_t* reference_pages);
+void mc_free_page_snapshot_region(size_t* pagenos, size_t page_count);
+void mc_restore_page_snapshot_region(mc_mem_region_t region, size_t page_count, uint64_t* pagemap, mc_mem_region_t reference_region);
+
+mc_mem_region_t mc_region_new_sparse(int type, void *start_addr, size_t size, mc_mem_region_t ref_reg);
+void mc_region_restore_sparse(mc_mem_region_t reg, mc_mem_region_t ref_reg);
+void mc_softdirty_reset();
+
+typedef struct s_mc_pages_store s_mc_pages_store_t, * mc_pages_store_t;
+mc_pages_store_t mc_pages_store_new();
+
+static inline __attribute__((always_inline))
+bool mc_snapshot_region_linear(mc_mem_region_t region) {
+ return !region || !region->data;
+}
+
+void* mc_snapshot_read_region(void* addr, mc_mem_region_t region, void* target, size_t size);
+void* mc_snapshot_read(void* addr, mc_snapshot_t snapshot, void* target, size_t size);
+int mc_snapshot_region_memcp(
+ void* addr1, mc_mem_region_t region1,
+ void* addr2, mc_mem_region_t region2, size_t size);
+int mc_snapshot_memcp(
+ void* addr1, mc_snapshot_t snapshot1,
+ void* addr2, mc_snapshot_t snapshot2, size_t size);
+
+static void* mc_snapshot_read_pointer(void* addr, mc_snapshot_t snapshot);
+
+/** @brief State of the model-checker (global variables for the model checker)
*
- * \param addr Address in the snapshot address space
- * \param snapsot Snapshot of interest (if NULL no translation is done)
- * \return Translated address in the application address space
+ * Each part of the state of the model chercker represented as a global
+ * variable prevents some sharing between snapshots and must be ignored.
+ * By moving as much state as possible in this structure allocated
+ * on the model-chercker heap, we avoid those issues.
*/
-uintptr_t mc_untranslate_address(void* addr, mc_snapshot_t snapshot);
+typedef struct s_mc_model_checker {
+ // This is the parent snapshot of the current state:
+ mc_snapshot_t parent_snapshot;
+ mc_pages_store_t pages;
+ int fd_clear_refs;
+ int fd_pagemap;
+} s_mc_model_checker_t, *mc_model_checker_t;
+
+extern mc_model_checker_t mc_model_checker;
extern xbt_dynar_t mc_checkpoint_ignore;
void MC_show_deadlock(smx_simcall_t req);
void MC_show_stack_safety(xbt_fifo_t stack);
void MC_dump_stack_safety(xbt_fifo_t stack);
-void MC_init(void);
int SIMIX_pre_mc_random(smx_simcall_t simcall, int min, int max);
+extern xbt_fifo_t mc_stack;
+int get_search_interval(xbt_dynar_t list, void *ref, int *min, int *max);
+
/********************************* Requests ***********************************/
/******************************** States **************************************/
+extern mc_global_t initial_global_state;
+
/* Possible exploration status of a process in a state */
typedef enum {
MC_NOT_INTERLEAVE=0, /* Do not interleave (do not execute) */
/* you must wrap the code between MC_SET_RAW_MODE and MC_UNSET_RAW_MODE */
extern void *std_heap;
-extern void *raw_heap;
+extern void *mc_heap;
/* FIXME: Horrible hack! because the mmalloc library doesn't provide yet of */
/* size_t bytes_free; /\* Byte total of chunks in the free list. *\/ */
/* }; */
-#define MC_SET_RAW_MEM mmalloc_set_current_heap(raw_heap)
-#define MC_UNSET_RAW_MEM mmalloc_set_current_heap(std_heap)
+#define MC_SET_MC_HEAP mmalloc_set_current_heap(mc_heap)
+#define MC_SET_STD_HEAP mmalloc_set_current_heap(std_heap)
/******************************* MEMORY MAPPINGS ***************************/
//#define MC_DEBUG 1
#define MC_VERBOSE 1
-/********************************** DPOR for safety property **************************************/
+/********************************** Safety verification **************************************/
typedef enum {
e_mc_reduce_unset,
} e_mc_reduce_t;
extern e_mc_reduce_t mc_reduce_kind;
-extern mc_global_t initial_state_safety;
-extern xbt_fifo_t mc_stack_safety;
extern xbt_dict_t first_enabled_state;
-void MC_dpor_init(void);
-void MC_dpor(void);
+void MC_pre_modelcheck_safety(void);
+void MC_modelcheck_safety(void);
typedef struct s_mc_visited_state{
mc_snapshot_t system_state;
int other_num; // dot_output for
}s_mc_visited_state_t, *mc_visited_state_t;
+extern xbt_dynar_t visited_states;
+int is_visited_state(void);
+void visited_state_free(mc_visited_state_t state);
+void visited_state_free_voidp(void *s);
-/********************************** Double-DFS for liveness property **************************************/
+/********************************** Liveness verification **************************************/
-extern xbt_fifo_t mc_stack_liveness;
-extern mc_global_t initial_state_liveness;
extern xbt_automaton_t _mc_property_automaton;
-extern int compare;
typedef struct s_mc_pair{
int num;
mc_visited_pair_t MC_visited_pair_new(int pair_num, xbt_automaton_state_t automaton_state, xbt_dynar_t atomic_propositions);
void MC_visited_pair_delete(mc_visited_pair_t p);
-void MC_ddfs_init(void);
-void MC_ddfs(void);
+void MC_pre_modelcheck_liveness(void);
+void MC_modelcheck_liveness(void);
void MC_show_stack_liveness(xbt_fifo_t stack);
void MC_dump_stack_liveness(xbt_fifo_t stack);
+extern xbt_dynar_t visited_pairs;
+int is_visited_pair(mc_visited_pair_t pair, int pair_num, xbt_automaton_state_t automaton_state, xbt_dynar_t atomic_propositions);
+
/********************************** Variables with DWARF **********************************/
void MC_find_object_address(memory_map_t maps, mc_object_info_t result);
void MC_post_process_types(mc_object_info_t info);
+void MC_post_process_object_info(mc_object_info_t info);
// ***** Expressions
struct s_dw_type{
e_dw_type_type type;
- void *id; /* Offset in the section (in hexadecimal form) */
+ Dwarf_Off id; /* Offset in the section (in hexadecimal form) */
char *name; /* Name of the type */
int byte_size; /* Size in bytes */
int element_count; /* Number of elements for array type */
};
void* mc_member_resolve(const void* base, dw_type_t type, dw_type_t member, mc_snapshot_t snapshot);
-void* mc_member_snapshot_resolve(const void* base, dw_type_t type, dw_type_t member, mc_snapshot_t snapshot);
typedef struct s_dw_variable{
Dwarf_Off dwarf_offset; /* Global offset of the field. */
int num;
smx_action_t comm;
e_smx_comm_type_t type;
- int completed;
unsigned long src_proc;
unsigned long dst_proc;
const char *src_host;
const char *dst_host;
char *rdv;
- size_t data_size;
+ ssize_t data_size;
void *data;
- int matched_comm;
}s_mc_comm_pattern_t, *mc_comm_pattern_t;
extern xbt_dynar_t communications_pattern;
+extern xbt_dynar_t incomplete_communications_pattern;
void get_comm_pattern(xbt_dynar_t communications_pattern, smx_simcall_t request, int call);
+void complete_comm_pattern(xbt_dynar_t list, smx_action_t comm);
+void MC_pre_modelcheck_comm_determinism(void);
+void MC_modelcheck_comm_determinism(void);
/* *********** Sets *********** */
* */
uint64_t mc_hash_processes_state(int num_state, xbt_dynar_t stacks);
+//
+
+static inline __attribute__ ((always_inline))
+ void* mc_snapshot_get_heap_end(mc_snapshot_t snapshot) {
+ if(snapshot==NULL)
+ xbt_die("snapshot is NULL");
+ void** addr = &((xbt_mheap_t)std_heap)->breakval;
+ return mc_snapshot_read_pointer(addr, snapshot);
+}
+
+static inline __attribute__ ((always_inline))
+void* mc_snapshot_read_pointer(void* addr, mc_snapshot_t snapshot)
+{
+ void* res;
+ return *(void**) mc_snapshot_read(addr, snapshot, &res, sizeof(void*));
+}
+
+SG_END_DECL()
+
#endif
