#include <unistd.h>
#define _GNU_SOURCE
-extern char *basename (__const char *__filename);
+extern char *basename(__const char *__filename);
-#define STD_HEAP_SIZE 20480000 /* Maximum size of the system's heap */
+#define STD_HEAP_SIZE 20480000 /* Maximum size of the system's heap */
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_memory, mc,
- "Logging specific to MC (memory)");
+ "Logging specific to MC (memory)");
/* Pointers to each of the heap regions to use */
-void *std_heap=NULL; /* memory erased each time the MC stuff rollbacks to the beginning. Almost everything goes here */
-void *raw_heap=NULL; /* memory persistent over the MC rollbacks. Only MC stuff should go there */
+void *std_heap = NULL; /* memory erased each time the MC stuff rollbacks to the beginning. Almost everything goes here */
+void *raw_heap = NULL; /* memory persistent over the MC rollbacks. Only MC stuff should go there */
/* Pointers to the beginning and end of the .data and .bss segment of libsimgrid */
/* They are initialized once at memory_init */
xbt_assert(std_heap != NULL);
/* Create the second region a page after the first one ends */
- raw_heap = mmalloc_attach(-1, (char *)(std_heap) + STD_HEAP_SIZE + getpagesize());
+ raw_heap =
+ mmalloc_attach(-1,
+ (char *) (std_heap) + STD_HEAP_SIZE + getpagesize());
xbt_assert(raw_heap != NULL);
MC_SET_RAW_MEM;
/* Get memory map */
memory_map_t maps;
maps = get_memory_map();
-
- for(i=0; i < maps->mapsize; i++){
-
- if(maps->regions[i].inode != 0){
-
+
+ for (i = 0; i < maps->mapsize; i++) {
+
+ if (maps->regions[i].inode != 0) {
+
tmp = xbt_strdup(maps->regions[i].pathname);
libname = basename(tmp);
-
+
#if 0
- if (maps->regions[i].perms & MAP_WRITE &&
- maps->regions[i].pathname[0] != '\0' && /* do not take anonymous segments: what are they? */
- strcmp("[heap]",maps->regions[i].pathname) && /* do not take standard heap: mmalloc saves it already */
- strcmp("[stack]",maps->regions[i].pathname) /* this is maestro's stack. No need to save it */
+ if (maps->regions[i].perms & MAP_WRITE && maps->regions[i].pathname[0] != '\0' && /* do not take anonymous segments: what are they? */
+ strcmp("[heap]", maps->regions[i].pathname) && /* do not take standard heap: mmalloc saves it already */
+ strcmp("[stack]", maps->regions[i].pathname) /* this is maestro's stack. No need to save it */
) {
/* FIXME: we should save the data of more segments, in a list of block to save */
}
#endif
/* for now, we only save the data of libsimgrid (FIXME) */
- if( strncmp("libsimgrid.so.", libname, 14) == 0 && maps->regions[i].perms & MAP_WRITE){
+ if (strncmp("libsimgrid.so.", libname, 14) == 0
+ && maps->regions[i].perms & MAP_WRITE) {
libsimgrid_data_addr_start = maps->regions[i].start_addr;
- libsimgrid_data_size = (size_t)((char *)maps->regions[i+1].start_addr - (char *)maps->regions[i].start_addr);
+ libsimgrid_data_size =
+ (size_t) ((char *) maps->regions[i + 1].start_addr -
+ (char *) maps->regions[i].start_addr);
xbt_free(tmp);
break;
- }
+ }
xbt_free(tmp);
}
}
-
- xbt_assert0(libsimgrid_data_addr_start != NULL,
- "Cannot determine libsimgrid's .data segment address");
-
+
+ xbt_assert0(libsimgrid_data_addr_start != NULL,
+ "Cannot determine libsimgrid's .data segment address");
+
MC_UNSET_RAW_MEM;
}
/* Finish the memory subsystem */
#include "xbt_modinter.h"
-void MC_memory_exit(void) {
+void MC_memory_exit(void)
+{
if (raw_heap)
mmalloc_detach(raw_heap);
}
/* 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. */
- };
+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. */
+};
extern struct mstats mmstats(void *);
/* Copy std_heap to "to_heap" allocating the required space for it */
size_t MC_save_heap(void **to_heap)
-{
+{
size_t heap_size = mmstats(std_heap).bytes_total;
-
+
*to_heap = calloc(heap_size, 1);
xbt_assert(*to_heap != NULL);
-
+
memcpy(*to_heap, std_heap, heap_size);
-
+
return heap_size;
}
/* Restore std_heap from "src_heap" */
void MC_restore_heap(void *src_heap, size_t size)
-{
+{
memcpy(std_heap, src_heap, size);
}
{
memcpy(libsimgrid_data_addr_start, src_data, size);
}
-
-
-
-
-
