#include "simgrid_config.h"
#include <stdio.h>
+#include <stdint.h>
#include <stdbool.h>
#ifndef WIN32
#include <sys/mman.h>
#include <elfutils/libdw.h>
#include "mc/mc.h"
+#include "mc_base.h"
#include "mc/datatypes.h"
#include "xbt/fifo.h"
#include "xbt/config.h"
#include "msg/datatypes.h"
#include "xbt/strbuff.h"
#include "xbt/parmap.h"
-#include "mc_mmu.h"
-#include "mc_page_store.h"
-#include "mc_interface.h"
+
+#include "mc_forward.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;
/****************************** Snapshots ***********************************/
-#define NB_REGIONS 3 /* binary data (data + BSS) (type = 2), libsimgrid data (data + BSS) (type = 1), std_heap (type = 0)*/
-
-/** @brief Copy/snapshot of a given memory region
- *
- * Two types of region snapshots exist:
- * <ul>
- * <li>flat/dense snapshots are a simple copy of the region;</li>
- * <li>sparse/per-page snapshots are snaapshots which shared
- * identical pages.</li>
- * </ul>
- */
-typedef struct s_mc_mem_region{
- /** @brief Virtual address of the region in the simulated process */
- void *start_addr;
-
- /** @brief Permanent virtual address of the region
- *
- * This is usually the same address as the simuilated process address.
- * However, when using SMPI privatization of global variables,
- * each SMPI process has its own set of global variables stored
- * at a different virtual address. The scheduler maps those region
- * on the region of the global variables.
- *
- * */
- void *permanent_addr;
-
- /** @brief Copy of the snapshot for flat snapshots regions (NULL otherwise) */
- void *data;
-
- /** @brief Size of the data region in bytes */
- size_t size;
-
- /** @brief Pages indices in the page store for per-page snapshots (NULL otherwise) */
- 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];
- 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;
-
-/** @brief Process index used when no process is available
- *
- * The expected behaviour is that if a process index is needed it will fail.
- * */
-#define MC_NO_PROCESS_INDEX -1
-
-/** @brief Process index when any process is suitable
- *
- * We could use a special negative value in the future.
- */
-#define MC_ANY_PROCESS_INDEX 0
-
-mc_mem_region_t mc_get_snapshot_region(void* addr, mc_snapshot_t snapshot, int process_index);
-
-static inline __attribute__ ((always_inline))
-mc_mem_region_t mc_get_region_hinted(void* addr, mc_snapshot_t snapshot, int process_index, mc_mem_region_t region)
-{
- if (mc_region_contain(region, addr))
- return region;
- else
- return mc_get_snapshot_region(addr, snapshot, process_index);
-}
-
-/** Information about a given stack frame
- *
- */
-typedef struct s_mc_stack_frame {
- /** Instruction pointer */
- unw_word_t ip;
- /** Stack pointer */
- unw_word_t sp;
- unw_word_t frame_base;
- dw_frame_t frame;
- char* frame_name;
- unw_cursor_t unw_cursor;
-} s_mc_stack_frame_t, *mc_stack_frame_t;
-
-typedef struct s_mc_snapshot_stack{
- xbt_dynar_t local_variables;
- xbt_dynar_t stack_frames; // mc_stack_frame_t
- int process_index;
-}s_mc_snapshot_stack_t, *mc_snapshot_stack_t;
-
-typedef struct s_mc_global_t{
- mc_snapshot_t snapshot;
- int raw_mem_set;
- int prev_pair;
- char *prev_req;
- int initial_communications_pattern_done;
- int comm_deterministic;
- int send_deterministic;
-}s_mc_global_t, *mc_global_t;
-
-typedef struct s_mc_checkpoint_ignore_region{
- void *addr;
- 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 MC_take_snapshot(int num_state);
-void MC_restore_snapshot(mc_snapshot_t);
-void MC_free_snapshot(mc_snapshot_t);
-
-int mc_important_snapshot(mc_snapshot_t snapshot);
-
-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(void* start_addr, size_t page_count, size_t* pagenos, uint64_t* pagemap, size_t* reference_pagenos);
-
-mc_mem_region_t mc_region_new_sparse(int type, void *start_addr, void* data_addr, size_t size, mc_mem_region_t ref_reg);
-void MC_region_destroy(mc_mem_region_t reg);
-void mc_region_restore_sparse(mc_mem_region_t reg, mc_mem_region_t ref_reg);
-void mc_softdirty_reset();
-
-static inline __attribute__((always_inline))
-bool mc_snapshot_region_linear(mc_mem_region_t region) {
- return !region || !region->data;
-}
-
-void* mc_snapshot_read_fragmented(void* addr, mc_mem_region_t region, void* target, size_t size);
-
-void* mc_snapshot_read(void* addr, mc_snapshot_t snapshot, int process_index, void* target, size_t size);
-int mc_snapshot_region_memcmp(
- void* addr1, mc_mem_region_t region1,
- void* addr2, mc_mem_region_t region2, size_t size);
-int mc_snapshot_memcmp(
- void* addr1, mc_snapshot_t snapshot1,
- void* addr2, mc_snapshot_t snapshot2, int process_index, size_t size);
-
-static void* mc_snapshot_read_pointer(void* addr, mc_snapshot_t snapshot, int process_index);
-
-/** @brief State of the model-checker (global variables for the model checker)
- *
- * 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.
- */
-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;
/********************************* MC Global **********************************/
-extern double *mc_time;
extern FILE *dot_output;
extern const char* colors[13];
extern xbt_parmap_t parmap;
int MC_deadlock_check(void);
void MC_replay(xbt_fifo_t stack, int start);
void MC_replay_liveness(xbt_fifo_t stack, int all_stack);
-void MC_wait_for_requests(void);
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);
-extern xbt_fifo_t mc_stack;
-int get_search_interval(xbt_dynar_t list, void *ref, int *min, int *max);
-
-
-/********************************* Requests ***********************************/
-
-int MC_request_depend(smx_simcall_t req1, smx_simcall_t req2);
-char* MC_request_to_string(smx_simcall_t req, int value);
-unsigned int MC_request_testany_fail(smx_simcall_t req);
-/*int MC_waitany_is_enabled_by_comm(smx_req_t req, unsigned int comm);*/
-int MC_request_is_visible(smx_simcall_t req);
-
-/** Can this requests can be executed.
+/** Stack (of `mc_state_t`) representing the current position of the
+ * the MC in the exploration graph
*
- * Most requests are always enabled but WAIT and WAITANY
- * are not always enabled: a WAIT where the communication does not
- * have both a source and a destination yet is not enabled
- * (unless timeout is enabled in the wait and enabeld in SimGridMC).
+ * It is managed by its head (`xbt_fifo_shift` and `xbt_fifo_unshift`).
*/
-int MC_request_is_enabled(smx_simcall_t req);
-int MC_request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx);
+extern xbt_fifo_t mc_stack;
-/** Is the process ready to execute its simcall?
- *
- * This is true if the request associated with the process is ready.
- */
-int MC_process_is_enabled(smx_process_t process);
-
-char *MC_request_get_dot_output(smx_simcall_t req, int value);
-
-
-/******************************** 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) */
- MC_INTERLEAVE, /* Interleave the process (one or more request) */
- MC_MORE_INTERLEAVE, /* Interleave twice the process (for mc_random simcall) */
- MC_DONE /* Already interleaved */
-} e_mc_process_state_t;
-
-/* On every state, each process has an entry of the following type */
-typedef struct mc_procstate{
- e_mc_process_state_t state; /* Exploration control information */
- unsigned int interleave_count; /* Number of times that the process was
- interleaved */
-} s_mc_procstate_t, *mc_procstate_t;
-
-/* An exploration state is composed of: */
-typedef struct mc_state {
- unsigned long max_pid; /* Maximum pid at state's creation time */
- mc_procstate_t proc_status; /* State's exploration status by process */
- s_smx_synchro_t internal_comm; /* To be referenced by the internal_req */
- s_smx_simcall_t internal_req; /* Internal translation of request */
- s_smx_simcall_t executed_req; /* The executed request of the state */
- int req_num; /* The request number (in the case of a
- multi-request like waitany ) */
- mc_snapshot_t system_state; /* Snapshot of system state */
- int num;
-} s_mc_state_t, *mc_state_t;
-
-mc_state_t MC_state_new(void);
-void MC_state_delete(mc_state_t state);
-void MC_state_interleave_process(mc_state_t state, smx_process_t process);
-unsigned int MC_state_interleave_size(mc_state_t state);
-int MC_state_process_is_done(mc_state_t state, smx_process_t process);
-void MC_state_set_executed_request(mc_state_t state, smx_simcall_t req, int value);
-smx_simcall_t MC_state_get_executed_request(mc_state_t state, int *value);
-smx_simcall_t MC_state_get_internal_request(mc_state_t state);
-smx_simcall_t MC_state_get_request(mc_state_t state, int *value);
-void MC_state_remove_interleave_process(mc_state_t state, smx_process_t process);
+int get_search_interval(xbt_dynar_t list, void *ref, int *min, int *max);
/****************************** Statistics ************************************/
extern mc_stats_t mc_stats;
-void MC_print_statistics(mc_stats_t);
-
-
-/********************************** MEMORY ******************************/
-/* The possible memory modes for the modelchecker are standard and raw. */
-/* Normally the system should operate in std, for switching to raw mode */
-/* you must wrap the code between MC_SET_RAW_MODE and MC_UNSET_RAW_MODE */
-
-extern xbt_mheap_t std_heap;
-extern xbt_mheap_t mc_heap;
-
-
-/* FIXME: Horrible hack! because the mmalloc library doesn't provide yet of */
-/* an API to query about the status of a heap, we simply call mmstats and */
-/* because I now how does structure looks like, then I redefine it here */
-
-/* struct mstats { */
-/* size_t bytes_total; /\* Total size of the heap. *\/ */
-/* size_t chunks_used; /\* Chunks allocated by the user. *\/ */
-/* size_t bytes_used; /\* Byte total of user-allocated chunks. *\/ */
-/* size_t chunks_free; /\* Chunks in the free list. *\/ */
-/* size_t bytes_free; /\* Byte total of chunks in the free list. *\/ */
-/* }; */
-
-#define MC_SET_MC_HEAP mmalloc_set_current_heap(mc_heap)
-#define MC_SET_STD_HEAP mmalloc_set_current_heap(std_heap)
-
-
-/******************************* MEMORY MAPPINGS ***************************/
-/* These functions and data structures implements a binary interface for */
-/* the proc maps ascii interface */
-
-/* Each field is defined as documented in proc's manual page */
-typedef struct s_map_region {
-
- void *start_addr; /* Start address of the map */
- void *end_addr; /* End address of the map */
- int prot; /* Memory protection */
- int flags; /* Additional memory flags */
- void *offset; /* Offset in the file/whatever */
- char dev_major; /* Major of the device */
- char dev_minor; /* Minor of the device */
- unsigned long inode; /* Inode in the device */
- char *pathname; /* Path name of the mapped file */
-
-} s_map_region_t;
-
-typedef struct s_memory_map {
-
- s_map_region_t *regions; /* Pointer to an array of regions */
- int mapsize; /* Number of regions in the memory */
-
-} s_memory_map_t, *memory_map_t;
-
-
-void MC_init_memory_map_info(void);
-memory_map_t MC_get_memory_map(void);
-void MC_free_memory_map(memory_map_t map);
+void MC_print_statistics(mc_stats_t stats);
extern char *libsimgrid_path;
//#define MC_DEBUG 1
#define MC_VERBOSE 1
-/********************************** Safety verification **************************************/
-
-typedef enum {
- e_mc_reduce_unset,
- e_mc_reduce_none,
- e_mc_reduce_dpor
-} e_mc_reduce_t;
-
-extern e_mc_reduce_t mc_reduce_kind;
-extern xbt_dict_t first_enabled_state;
-
-void MC_pre_modelcheck_safety(void);
-void MC_modelcheck_safety(void);
-
-typedef struct s_mc_visited_state{
- mc_snapshot_t system_state;
- size_t heap_bytes_used;
- int nb_processes;
- int num;
- int other_num; // dot_output for
-}s_mc_visited_state_t, *mc_visited_state_t;
-
-extern xbt_dynar_t visited_states;
-mc_visited_state_t is_visited_state(void);
-void visited_state_free(mc_visited_state_t state);
-void visited_state_free_voidp(void *s);
-
-/********************************** Liveness verification **************************************/
-
-extern xbt_automaton_t _mc_property_automaton;
-
-typedef struct s_mc_pair{
- int num;
- int search_cycle;
- mc_state_t graph_state; /* System state included */
- xbt_automaton_state_t automaton_state;
- xbt_dynar_t atomic_propositions;
- int requests;
-}s_mc_pair_t, *mc_pair_t;
-
-typedef struct s_mc_visited_pair{
- int num;
- int other_num; /* Dot output for */
- int acceptance_pair;
- mc_state_t graph_state; /* System state included */
- xbt_automaton_state_t automaton_state;
- xbt_dynar_t atomic_propositions;
- size_t heap_bytes_used;
- int nb_processes;
- int acceptance_removed;
- int visited_removed;
-}s_mc_visited_pair_t, *mc_visited_pair_t;
-
-mc_pair_t MC_pair_new(void);
-void MC_pair_delete(mc_pair_t);
-void mc_pair_free_voidp(void *p);
-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_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 **********************************/
-#define MC_OBJECT_INFO_EXECUTABLE 1
-
-struct s_mc_object_info {
- size_t flags;
- char* file_name;
- char *start_exec, *end_exec; // Executable segment
- char *start_rw, *end_rw; // Read-write segment
- char *start_ro, *end_ro; // read-only segment
- xbt_dict_t subprograms; // xbt_dict_t<origin as hexadecimal string, dw_frame_t>
- xbt_dynar_t global_variables; // xbt_dynar_t<dw_variable_t>
- xbt_dict_t types; // xbt_dict_t<origin as hexadecimal string, dw_type_t>
- xbt_dict_t full_types_by_name; // xbt_dict_t<name, dw_type_t> (full defined type only)
-
- // Here we sort the minimal information for an efficient (and cache-efficient)
- // lookup of a function given an instruction pointer.
- // The entries are sorted by low_pc and a binary search can be used to look them up.
- xbt_dynar_t functions_index;
-};
-
-mc_object_info_t MC_new_object_info(void);
-mc_object_info_t MC_find_object_info(memory_map_t maps, char* name, int executable);
-void MC_free_object_info(mc_object_info_t* p);
-
-void MC_dwarf_get_variables(mc_object_info_t info);
-void MC_dwarf_get_variables_libdw(mc_object_info_t info);
-const char* MC_dwarf_attrname(int attr);
-const char* MC_dwarf_tagname(int tag);
-
dw_frame_t MC_find_function_by_ip(void* ip);
mc_object_info_t MC_ip_find_object_info(void* ip);
-extern mc_object_info_t mc_libsimgrid_info;
-extern mc_object_info_t mc_binary_info;
-extern mc_object_info_t mc_object_infos[2];
-extern size_t mc_object_infos_size;
-
void MC_find_object_address(memory_map_t maps, mc_object_info_t result);
-void MC_post_process_object_info(mc_object_info_t info);
-
-// ***** Expressions
-
-/** \brief a DWARF expression with optional validity contraints */
-typedef struct s_mc_expression {
- size_t size;
- Dwarf_Op* ops;
- // Optional validity:
- void* lowpc, *highpc;
-} s_mc_expression_t, *mc_expression_t;
-
-/** A location list (list of location expressions) */
-typedef struct s_mc_location_list {
- size_t size;
- mc_expression_t locations;
-} s_mc_location_list_t, *mc_location_list_t;
-
-/** A location is either a location in memory of a register location
- *
- * Usage:
- *
- * * mc_dwarf_resolve_locations or mc_dwarf_resolve_location is used
- * to find the location of a given location expression or location list;
- *
- * * mc_get_location_type MUST be used to find the location type;
- *
- * * for MC_LOCATION_TYPE_ADDRESS, memory_address is the resulting address
- *
- * * for MC_LOCATION_TYPE_REGISTER, unw_get_reg(l.cursor, l.register_id, value)
- * and unw_get_reg(l.cursor, l.register_id, value) can be used to read/write
- * the value.
- * </ul>
- */
-typedef struct s_mc_location {
- void* memory_location;
- unw_cursor_t* cursor;
- int register_id;
-} s_mc_location_t, *mc_location_t;
-
-/** Type of a given location
- *
- * Use `mc_get_location_type(location)` to find the type.
- * */
-typedef enum mc_location_type {
- MC_LOCATION_TYPE_ADDRESS,
- MC_LOCATION_TYPE_REGISTER
-} mc_location_type;
-
-/** Find the type of a location */
-static inline __attribute__ ((always_inline))
-enum mc_location_type mc_get_location_type(mc_location_t location) {
- if (location->cursor) {
- return MC_LOCATION_TYPE_REGISTER;
- } else {
- return MC_LOCATION_TYPE_ADDRESS;
- }
-}
-
-void mc_dwarf_resolve_location(mc_location_t location, mc_expression_t expression, mc_object_info_t object_info, unw_cursor_t* c, void* frame_pointer_address, mc_snapshot_t snapshot, int process_index);
-void mc_dwarf_resolve_locations(mc_location_t location, mc_location_list_t locations, mc_object_info_t object_info, unw_cursor_t* c, void* frame_pointer_address, mc_snapshot_t snapshot, int process_index);
-
-void mc_dwarf_expression_clear(mc_expression_t expression);
-void mc_dwarf_expression_init(mc_expression_t expression, size_t len, Dwarf_Op* ops);
-
-void mc_dwarf_location_list_clear(mc_location_list_t list);
-
-void mc_dwarf_location_list_init_from_expression(mc_location_list_t target, size_t len, Dwarf_Op* ops);
-void mc_dwarf_location_list_init(mc_location_list_t target, mc_object_info_t info, Dwarf_Die* die, Dwarf_Attribute* attr);
-
-// ***** Variables and functions
-
-struct s_dw_type{
- e_dw_type_type type;
- 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 */
- char *dw_type_id; /* DW_AT_type id */
- xbt_dynar_t members; /* if DW_TAG_structure_type, DW_TAG_class_type, DW_TAG_union_type*/
- int is_pointer_type;
-
- // Location (for members) is either of:
- struct s_mc_expression location;
- int offset;
-
- dw_type_t subtype; // DW_AT_type
- dw_type_t full_type; // The same (but more complete) type
-};
-
-void* mc_member_resolve(const void* base, dw_type_t type, dw_type_t member, mc_snapshot_t snapshot, int process_index);
-
-typedef struct s_dw_variable{
- Dwarf_Off dwarf_offset; /* Global offset of the field. */
- int global;
- char *name;
- char *type_origin;
- dw_type_t type;
-
- // Use either of:
- s_mc_location_list_t locations;
- void* address;
-
- size_t start_scope;
- mc_object_info_t object_info;
-
-}s_dw_variable_t, *dw_variable_t;
-
-struct s_dw_frame{
- int tag;
- char *name;
- void *low_pc;
- void *high_pc;
- s_mc_location_list_t frame_base;
- xbt_dynar_t /* <dw_variable_t> */ variables; /* Cannot use dict, there may be several variables with the same name (in different lexical blocks)*/
- unsigned long int id; /* DWARF offset of the subprogram */
- xbt_dynar_t /* <dw_frame_t> */ scopes;
- Dwarf_Off abstract_origin_id;
- mc_object_info_t object_info;
-};
-
-struct s_mc_function_index_item {
- void* low_pc, *high_pc;
- dw_frame_t function;
-};
-
-void mc_frame_free(dw_frame_t freme);
-
-void dw_type_free(dw_type_t t);
-void dw_variable_free(dw_variable_t v);
-void dw_variable_free_voidp(void *t);
-
-void MC_dwarf_register_global_variable(mc_object_info_t info, dw_variable_t variable);
-void MC_register_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
-void MC_dwarf_register_non_global_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
-void MC_dwarf_register_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
-
-/** Find the DWARF offset for this ELF object
- *
- * An offset is applied to address found in DWARF:
- *
- * <ul>
- * <li>for an executable obejct, addresses are virtual address
- * (there is no offset) i.e. \f$\text{virtual address} = \{dwarf address}\f$;</li>
- * <li>for a shared object, the addreses are offset from the begining
- * of the shared object (the base address of the mapped shared
- * object must be used as offset
- * i.e. \f$\text{virtual address} = \text{shared object base address}
- * + \text{dwarf address}\f$.</li>
- *
- */
-void* MC_object_base_address(mc_object_info_t info);
-
-/********************************** DWARF **********************************/
-
-#define MC_EXPRESSION_STACK_SIZE 64
-
-#define MC_EXPRESSION_OK 0
-#define MC_EXPRESSION_E_UNSUPPORTED_OPERATION 1
-#define MC_EXPRESSION_E_STACK_OVERFLOW 2
-#define MC_EXPRESSION_E_STACK_UNDERFLOW 3
-#define MC_EXPRESSION_E_MISSING_STACK_CONTEXT 4
-#define MC_EXPRESSION_E_MISSING_FRAME_BASE 5
-#define MC_EXPRESSION_E_NO_BASE_ADDRESS 6
-
-typedef struct s_mc_expression_state {
- uintptr_t stack[MC_EXPRESSION_STACK_SIZE];
- size_t stack_size;
-
- unw_cursor_t* cursor;
- void* frame_base;
- mc_snapshot_t snapshot;
- mc_object_info_t object_info;
- int process_index;
-} s_mc_expression_state_t, *mc_expression_state_t;
-
-int mc_dwarf_execute_expression(size_t n, const Dwarf_Op* ops, mc_expression_state_t state);
-
-void* mc_find_frame_base(dw_frame_t frame, mc_object_info_t object_info, unw_cursor_t* unw_cursor);
/********************************** Miscellaneous **********************************/
int region;
}s_local_variable_t, *local_variable_t;
-/********************************* Communications pattern ***************************/
-
-typedef struct s_mc_comm_pattern{
- int num;
- smx_synchro_t comm;
- e_smx_comm_type_t type;
- unsigned long src_proc;
- unsigned long dst_proc;
- const char *src_host;
- const char *dst_host;
- char *rdv;
- ssize_t data_size;
- void *data;
-}s_mc_comm_pattern_t, *mc_comm_pattern_t;
-
-extern xbt_dynar_t initial_communications_pattern;
-extern xbt_dynar_t communications_pattern;
-extern xbt_dynar_t incomplete_communications_pattern;
-
-// Can we use the SIMIX syscall for this?
-typedef enum mc_call_type {
- MC_CALL_TYPE_NONE,
- MC_CALL_TYPE_SEND,
- MC_CALL_TYPE_RECV,
- MC_CALL_TYPE_WAIT,
- MC_CALL_TYPE_WAITANY,
-} mc_call_type;
-
-static inline mc_call_type mc_get_call_type(smx_simcall_t req) {
- switch(req->call) {
- case SIMCALL_COMM_ISEND:
- return MC_CALL_TYPE_SEND;
- case SIMCALL_COMM_IRECV:
- return MC_CALL_TYPE_RECV;
- case SIMCALL_COMM_WAIT:
- return MC_CALL_TYPE_WAIT;
- case SIMCALL_COMM_WAITANY:
- return MC_CALL_TYPE_WAITANY;
- default:
- return MC_CALL_TYPE_NONE;
- }
-}
-
-void get_comm_pattern(xbt_dynar_t communications_pattern, smx_simcall_t request, mc_call_type call_type);
-void mc_update_comm_pattern(mc_call_type call_type, smx_simcall_t request, int value, xbt_dynar_t current_pattern);
-void complete_comm_pattern(xbt_dynar_t list, smx_synchro_t comm);
-void MC_pre_modelcheck_comm_determinism(void);
-void MC_modelcheck_comm_determinism(void);
-
/* *********** Sets *********** */
typedef struct s_mc_address_set *mc_address_set_t;
-mc_address_set_t mc_address_set_new();
+mc_address_set_t mc_address_set_new(void);
void mc_address_set_free(mc_address_set_t* p);
void mc_address_add(mc_address_set_t p, const void* value);
bool mc_address_test(mc_address_set_t p, const void* value);
/* *********** Snapshot *********** */
-static inline __attribute__((always_inline))
-void* mc_translate_address_region(uintptr_t addr, mc_mem_region_t region)
-{
- size_t pageno = mc_page_number(region->start_addr, (void*) addr);
- size_t snapshot_pageno = region->page_numbers[pageno];
- const void* snapshot_page = mc_page_store_get_page(mc_model_checker->pages, snapshot_pageno);
- return (char*) snapshot_page + mc_page_offset((void*) addr);
-}
-
-/** \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
- * */
-static inline __attribute__((always_inline))
-void* mc_translate_address(uintptr_t addr, mc_snapshot_t snapshot, int process_index)
-{
-
- // If not in a process state/clone:
- if (!snapshot) {
- return (uintptr_t *) addr;
- }
-
- mc_mem_region_t region = mc_get_snapshot_region((void*) addr, snapshot, process_index);
-
- xbt_assert(mc_region_contain(region, (void*) addr), "Trying to read out of the region boundary.");
-
- if (!region) {
- return (void *) addr;
- }
-
- // Flat snapshot:
- else if (region->data) {
- uintptr_t offset = addr - (uintptr_t) region->start_addr;
- return (void *) ((uintptr_t) region->data + offset);
- }
-
- // Per-page snapshot:
- else if (region->page_numbers) {
- return mc_translate_address_region(addr, region);
- }
-
- else {
- xbt_die("No data for this memory region");
- }
-}
-
-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 = &(std_heap->breakval);
- return mc_snapshot_read_pointer(addr, snapshot, MC_ANY_PROCESS_INDEX);
-}
-
-static inline __attribute__ ((always_inline))
-void* mc_snapshot_read_pointer(void* addr, mc_snapshot_t snapshot, int process_index)
-{
- void* res;
- return *(void**) mc_snapshot_read(addr, snapshot, process_index, &res, sizeof(void*));
-}
-
-/** @brief Read memory from a snapshot region
- *
- * @param addr Process (non-snapshot) address of the data
- * @param region Snapshot memory region where the data is located
- * @param target Buffer to store the value
- * @param size Size of the data to read in bytes
- * @return Pointer where the data is located (target buffer of original location)
- */
-static inline __attribute__((always_inline))
-void* mc_snapshot_read_region(void* addr, mc_mem_region_t region, void* target, size_t size)
-{
- if (region==NULL)
- return addr;
-
- uintptr_t offset = (char*) addr - (char*) region->start_addr;
-
- xbt_assert(mc_region_contain(region, addr),
- "Trying to read out of the region boundary.");
-
- // Linear memory region:
- if (region->data) {
- return (char*) region->data + offset;
- }
-
- // Fragmented memory region:
- else if (region->page_numbers) {
- // Last byte of the region:
- void* end = (char*) addr + size - 1;
- if( mc_same_page(addr, end) ) {
- // The memory is contained in a single page:
- return mc_translate_address_region((uintptr_t) addr, region);
- } else {
- // The memory spans several pages:
- return mc_snapshot_read_fragmented(addr, region, target, size);
- }
- }
-
- else {
- xbt_die("No data available for this region");
- }
-}
-
-static inline __attribute__ ((always_inline))
-void* mc_snapshot_read_pointer_region(void* addr, mc_mem_region_t region)
-{
- void* res;
- return *(void**) mc_snapshot_read_region(addr, region, &res, sizeof(void*));
-}
-
#define MC_LOG_REQUEST(log, req, value) \
if (XBT_LOG_ISENABLED(log, xbt_log_priority_debug)) { \
char* req_str = MC_request_to_string(req, value); \
xbt_free(req_str); \
}
+/** @brief Dump the stacks of the application processes
+ *
+ * This functions is currently not used but it is quite convenient
+ * to call from the debugger.
+ *
+ * Does not work when an application thread is running.
+ */
+void MC_dump_stacks(FILE* file);
+
SG_END_DECL()
#endif
