#include <vector>
#include <utility>
#include <inttypes.h>
-
#include "common.h"
+
#define MYBINARYNAME "model"
#define MYLIBRARYNAME "libmodel.so"
#define MAPFILE_FORMAT "/proc/%d/maps"
SnapshotStack * snapshotObject;
-void SnapshotGlobalSegments(){
+#ifdef MAC
+/** The SnapshotGlobalSegments function computes the memory regions
+ * that may contain globals and then configures the snapshotting
+ * library to snapshot them.
+ */
+static void SnapshotGlobalSegments(){
+ int pid = getpid();
+ char buf[9000], execname[100];
+ FILE *map;
+
+ sprintf(execname, "vmmap -interleaved %d", pid);
+ map=popen(execname, "r");
+
+ if (!map) {
+ perror("popen");
+ exit(EXIT_FAILURE);
+ }
+
+ /* Wait for correct part */
+ while (fgets(buf, sizeof(buf), map)) {
+ if (strstr(buf, "==== regions for process"))
+ break;
+ }
+
+ while (fgets(buf, sizeof(buf), map)) {
+ char regionname[200] = "";
+ char type[23];
+ char smstr[23];
+ char r, w, x;
+ char mr, mw, mx;
+ int size;
+ void *begin, *end;
+
+ //Skip out at the end of the section
+ if (buf[0]=='\n')
+ break;
+
+ sscanf(buf, "%22s %p-%p [%5dK] %c%c%c/%c%c%c SM=%3s %200s\n", type, &begin, &end, &size, &r, &w, &x, &mr, &mw, &mx, smstr, regionname);
+
+ if (w == 'w' && (strstr(regionname, MYBINARYNAME) || strstr(regionname, MYLIBRARYNAME))) {
+ size_t len = ((uintptr_t)end - (uintptr_t)begin) / PAGESIZE;
+ if (len != 0)
+ addMemoryRegionToSnapShot(begin, len);
+ }
+ }
+ pclose(map);
+}
+#else
+/** The SnapshotGlobalSegments function computes the memory regions
+ * that may contain globals and then configures the snapshotting
+ * library to snapshot them.
+ */
+static void SnapshotGlobalSegments(){
int pid = getpid();
char buf[9000], filename[100];
FILE *map;
size_t len = ((uintptr_t)end - (uintptr_t)begin) / PAGESIZE;
if (len != 0)
addMemoryRegionToSnapShot(begin, len);
- DEBUG("%45s: %18p - %18p\t%c%c%c%c\n", regionname, begin, end, r, w, x, p);
+ DEBUG("%55s: %18p - %18p\t%c%c%c%c\n", regionname, begin, end, r, w, x, p);
}
}
fclose(map);
}
+#endif
-//class definition of SnapshotStack.....
-//declaration of constructor....
SnapshotStack::SnapshotStack(){
SnapshotGlobalSegments();
stack=NULL;
SnapshotStack::~SnapshotStack(){
}
+
+/** This method returns to the last snapshot before the inputted
+ * sequence number. This function must be called from the model
+ * checking thread and not from a snapshotted stack.
+ * @param seqindex is the sequence number to rollback before.
+ * @return is the sequence number we actually rolled back to.
+ */
int SnapshotStack::backTrackBeforeStep(int seqindex) {
while(true) {
if (stack->index<=seqindex) {
return stack->index;
}
struct stackEntry *tmp=stack;
- MYFREE(tmp);
stack=stack->next;
+ MYFREE(tmp);
}
}
+/** This method takes a snapshot at the given sequence number. */
void SnapshotStack::snapshotStep(int seqindex) {
struct stackEntry *tmp=(struct stackEntry *)MYMALLOC(sizeof(struct stackEntry));
tmp->next=stack;