#include <xbt/dynar.h>
#include "mc_forward.h"
-#include "mc_model_checker.h"
-#include "mc_page_store.h"
+#include "ModelChecker.hpp"
+#include "PageStore.hpp"
#include "mc_mmalloc.h"
+#include "mc/AddressSpace.hpp"
+#include "mc_unw.h"
SG_BEGIN_DECL()
-void mc_softdirty_reset(void);
-
// ***** Snapshot region
typedef enum e_mc_region_type_t {
};
-mc_mem_region_t mc_region_new_sparse(mc_region_type_t 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);
+MC_SHOULD_BE_INTERNAL mc_mem_region_t mc_region_new_sparse(
+ mc_region_type_t type, void *start_addr, void* data_addr, size_t size);
+MC_SHOULD_BE_INTERNAL void MC_region_destroy(mc_mem_region_t reg);
+XBT_INTERNAL void mc_region_restore_sparse(mc_process_t process, mc_mem_region_t reg);
static inline __attribute__ ((always_inline))
-bool mc_region_contain(mc_mem_region_t region, void* p)
+bool mc_region_contain(mc_mem_region_t region, const void* p)
{
return p >= region->start_addr &&
p < (void*)((char*) region->start_addr + region->size);
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->chunked.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);
+ size_t pageno = mc_page_number(region->start_addr, (void*) addr);
+ size_t snapshot_pageno = region->chunked.page_numbers[pageno];
+ const void* snapshot_page =
+ mc_model_checker->page_store().get_page(snapshot_pageno);
+ return (char*) snapshot_page + mc_page_offset((void*) addr);
}
-mc_mem_region_t mc_get_snapshot_region(void* addr, mc_snapshot_t snapshot, int process_index);
+XBT_INTERNAL mc_mem_region_t mc_get_snapshot_region(
+ const void* addr, const s_mc_snapshot_t *snapshot, int process_index);
/** \brief Translate a pointer from process address space to snapshot address space
*
int flags;
}s_fd_infos_t, *fd_infos_t;
-struct s_mc_snapshot{
+}
+
+namespace simgrid {
+namespace mc {
+
+class Snapshot : public AddressSpace {
+public:
+ Snapshot();
+ ~Snapshot();
+ const void* read_bytes(void* buffer, std::size_t size,
+ remote_ptr<void> address, int process_index = ProcessIndexAny,
+ ReadMode mode = Normal) const override;
+public: // To be private
+ mc_process_t process;
+ int num_state;
size_t heap_bytes_used;
mc_mem_region_t* snapshot_regions;
size_t snapshot_regions_count;
fd_infos_t *current_fd;
};
-/** @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
+extern "C" {
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)
typedef struct s_mc_snapshot_stack{
xbt_dynar_t local_variables;
+ mc_unw_context_t context;
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{
+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 recv_deterministic;
int send_deterministic;
+ char *send_diff;
+ char *recv_diff;
}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);
+static const void* mc_snapshot_get_heap_end(mc_snapshot_t snapshot);
-void* mc_snapshot_read_fragmented(void* addr, mc_mem_region_t region, void* target, size_t size);
+XBT_INTERNAL mc_snapshot_t MC_take_snapshot(int num_state);
+XBT_INTERNAL void MC_restore_snapshot(mc_snapshot_t);
-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);
+XBT_INTERNAL size_t* mc_take_page_snapshot_region(mc_process_t process,
+ void* data, size_t page_count);
+XBT_INTERNAL void mc_free_page_snapshot_region(size_t* pagenos, size_t page_count);
+XBT_INTERNAL void mc_restore_page_snapshot_region(
+ mc_process_t process,
+ void* start_addr, size_t page_count, size_t* pagenos);
-static void* mc_snapshot_read_pointer(void* addr, mc_snapshot_t snapshot, int process_index);
+MC_SHOULD_BE_INTERNAL const void* MC_region_read_fragmented(
+ mc_mem_region_t region, void* target, const void* addr, size_t size);
-static inline __attribute__ ((always_inline))
-void* mc_snapshot_read_pointer(void* addr, mc_snapshot_t snapshot, int process_index)
+// Deprecated compatibility wrapper
+static inline
+const void* MC_snapshot_read(mc_snapshot_t snapshot,
+ simgrid::mc::AddressSpace::ReadMode mode,
+ void* target, const void* addr, size_t size, int process_index)
{
- void* res;
- return *(void**) mc_snapshot_read(addr, snapshot, process_index, &res, sizeof(void*));
+ return snapshot->read_bytes(target, size, simgrid::mc::remote(addr),
+ process_index, mode);
}
+MC_SHOULD_BE_INTERNAL int MC_snapshot_region_memcmp(
+ const void* addr1, mc_mem_region_t region1,
+ const void* addr2, mc_mem_region_t region2, size_t size);
+XBT_INTERNAL int MC_snapshot_memcmp(
+ const void* addr1, mc_snapshot_t snapshot1,
+ const void* addr2, mc_snapshot_t snapshot2, int process_index, size_t size);
+
static inline __attribute__ ((always_inline))
- void* mc_snapshot_get_heap_end(mc_snapshot_t snapshot) {
+const 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);
+ return mc_model_checker->process().get_heap()->breakval;
}
/** @brief Read memory from a snapshot region
* @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)
+const void* MC_region_read(mc_mem_region_t region, void* target, const void* addr, size_t size)
{
- if (region==NULL)
- return addr;
+ xbt_assert(region);
uintptr_t offset = (char*) addr - (char*) region->start_addr;
{
// Last byte of the region:
void* end = (char*) addr + size - 1;
- if( mc_same_page(addr, end) ) {
+ 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);
+ return MC_region_read_fragmented(region, target, addr, size);
}
}
}
static inline __attribute__ ((always_inline))
-void* mc_snapshot_read_pointer_region(void* addr, mc_mem_region_t region)
+void* MC_region_read_pointer(mc_mem_region_t region, const void* addr)
{
void* res;
- return *(void**) mc_snapshot_read_region(addr, region, &res, sizeof(void*));
+ return *(void**) MC_region_read(region, &res, addr, sizeof(void*));
}
SG_END_DECL()
