5 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_checkpoint, mc,
6 "Logging specific to mc_checkpoint");
8 static mc_mem_region_t MC_region_new(int type, void *start_addr, size_t size);
9 static void MC_region_restore(mc_mem_region_t reg);
10 static void MC_region_destroy(mc_mem_region_t reg);
12 static void MC_snapshot_add_region(mc_snapshot_t snapshot, int type, void *start_addr, size_t size);
14 static mc_mem_region_t MC_region_new(int type, void *start_addr, size_t size)
16 mc_mem_region_t new_reg = xbt_new0(s_mc_mem_region_t, 1);
18 new_reg->start_addr = start_addr;
20 new_reg->data = xbt_malloc0(size);
21 memcpy(new_reg->data, start_addr, size);
25 static void MC_region_restore(mc_mem_region_t reg)
27 /*FIXME: check if start_addr is still mapped, if it is not, then map it
28 before copying the data */
29 memcpy(reg->start_addr, reg->data, reg->size);
32 static void MC_region_destroy(mc_mem_region_t reg)
38 static void MC_snapshot_add_region(mc_snapshot_t snapshot, int type, void *start_addr, size_t size)
40 mc_mem_region_t new_reg = MC_region_new(type, start_addr, size);
41 snapshot->regions = xbt_realloc(snapshot->regions, (snapshot->num_reg + 1) * sizeof(mc_mem_region_t));
42 snapshot->regions[snapshot->num_reg] = new_reg;
47 void MC_take_snapshot(mc_snapshot_t snapshot)
51 memory_map_t maps = get_memory_map();
53 /* Save the std heap and the writable mapped pages of libsimgrid */
54 while (i < maps->mapsize) {
55 reg = maps->regions[i];
56 if ((reg.prot & PROT_WRITE)){
57 if (maps->regions[i].pathname == NULL){
58 if (reg.start_addr == std_heap){ // only save the std heap (and not the raw one)
59 MC_snapshot_add_region(snapshot, 0, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
62 if (!memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
63 MC_snapshot_add_region(snapshot, 1, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
70 /* FIXME: free the memory map */
74 void MC_take_snapshot_liveness(mc_snapshot_t snapshot, char *prgm)
78 memory_map_t maps = get_memory_map();
80 /* Save the std heap and the writable mapped pages of libsimgrid */
81 while (i < maps->mapsize) {
82 reg = maps->regions[i];
83 if ((reg.prot & PROT_WRITE)){
84 if (maps->regions[i].pathname == NULL){
85 if (reg.start_addr == std_heap){ // only save the std heap (and not the raw one)
86 MC_snapshot_add_region(snapshot, 0, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
89 if (!memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
90 MC_snapshot_add_region(snapshot, 1, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
92 if (!memcmp(basename(maps->regions[i].pathname), basename(prgm), strlen(basename(prgm)))){
93 MC_snapshot_add_region(snapshot, 1, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
101 /* FIXME: free the memory map */
104 void MC_restore_snapshot(mc_snapshot_t snapshot)
107 for(i=0; i < snapshot->num_reg; i++)
108 MC_region_restore(snapshot->regions[i]);
111 void MC_free_snapshot(mc_snapshot_t snapshot)
114 for(i=0; i < snapshot->num_reg; i++)
115 MC_region_destroy(snapshot->regions[i]);