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);
11 static void MC_snapshot_destroy(mc_snapshot_t s);
13 static void MC_snapshot_add_region(mc_snapshot_t snapshot, int type, void *start_addr, size_t size);
15 static mc_mem_region_t MC_region_new(int type, void *start_addr, size_t size)
17 mc_mem_region_t new_reg = xbt_new0(s_mc_mem_region_t, 1);
19 new_reg->start_addr = start_addr;
21 new_reg->data = xbt_malloc0(size);
22 memcpy(new_reg->data, start_addr, size);
26 static void MC_region_restore(mc_mem_region_t reg)
28 /*FIXME: check if start_addr is still mapped, if it is not, then map it
29 before copying the data */
30 memcpy(reg->start_addr, reg->data, reg->size);
33 static void MC_region_destroy(mc_mem_region_t reg)
39 static void MC_snapshot_add_region(mc_snapshot_t snapshot, int type, void *start_addr, size_t size)
41 mc_mem_region_t new_reg = MC_region_new(type, start_addr, size);
42 snapshot->regions = xbt_realloc(snapshot->regions, (snapshot->num_reg + 1) * sizeof(mc_mem_region_t));
43 snapshot->regions[snapshot->num_reg] = new_reg;
48 void MC_take_snapshot(mc_snapshot_t snapshot)
52 memory_map_t maps = get_memory_map();
54 XBT_DEBUG("Take snapshot");
56 /* Save the std heap and the writable mapped pages of libsimgrid */
57 while (i < maps->mapsize) {
58 reg = maps->regions[i];
59 if ((reg.prot & PROT_WRITE)){
60 if (maps->regions[i].pathname == NULL){
61 if (reg.start_addr == std_heap){ // only save the std heap (and not the raw one)
62 MC_snapshot_add_region(snapshot, 0, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
65 if (!memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
66 MC_snapshot_add_region(snapshot, 1, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
74 /* FIXME: free the memory map */
77 static void MC_snapshot_destroy(mc_snapshot_t s){
81 for(i=0; i< s->num_reg; i++){
82 MC_region_destroy(s->regions[i]);
89 void MC_take_snapshot_liveness(mc_snapshot_t snapshot, char *prgm)
93 memory_map_t maps = get_memory_map();
95 MC_snapshot_destroy(snapshot);
97 XBT_DEBUG("Take snapshot");
99 /* Save the std heap and the writable mapped pages of libsimgrid */
100 while (i < maps->mapsize) {
101 reg = maps->regions[i];
102 if ((reg.prot & PROT_WRITE)){
103 if (maps->regions[i].pathname == NULL){
104 if (reg.start_addr == std_heap){ // only save the std heap (and not the raw one)
105 MC_snapshot_add_region(snapshot, 0, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
106 //XBT_DEBUG("Region heap");
109 if (!memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
110 MC_snapshot_add_region(snapshot, 1, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
111 //XBT_DEBUG("Region simgrid");
113 if (!memcmp(basename(maps->regions[i].pathname), basename(prgm), strlen(basename(prgm)))){
114 MC_snapshot_add_region(snapshot, 1, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
115 //XBT_DEBUG("Region prog");
124 /* FIXME: free the memory map */
127 void MC_restore_snapshot(mc_snapshot_t snapshot)
130 for(i=0; i < snapshot->num_reg; i++)
131 MC_region_restore(snapshot->regions[i]);
134 void MC_free_snapshot(mc_snapshot_t snapshot)
137 for(i=0; i < snapshot->num_reg; i++)
138 MC_region_destroy(snapshot->regions[i]);