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Remove antique crud. 

MMalloc: save the time at which the request was granted, remove more
crud.

FFree: add a circular buffer of the last 64 Free requests if
DEBUG_MEMFREE is set.
This commit is contained in:
Greg Lehey 1999-03-13 07:37:44 +00:00
parent 5c6d2cb543
commit cadf346d84
1 changed files with 25 additions and 10 deletions
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35
sys/dev/vinum/vinummemory.c
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@ -52,9 +52,6 @@ extern struct rqinfo *rqip;
int setjmp(jmp_buf);
void longjmp(jmp_buf, int);
void freedatabuf(struct mc *me);
caddr_t allocdatabuf(struct mc *me);
void
expand_table(void **table, int oldsize, int newsize)
{
@ -78,16 +75,19 @@ int malloccount = 0;
int highwater = 0; /* highest index ever allocated */
static struct mc malloced[MALLOCENTRIES];
#define FREECOUNT 64
int lastfree = 0;
struct mc freeinfo[FREECOUNT];
static total_malloced;
static int mallocseq = 0;
caddr_t
MMalloc(int size, char *file, int line)
{
caddr_t result;
int i;
static int seq = 0;
int s;
struct mc me; /* information to pass to allocdatabuf */
if (malloccount >= MALLOCENTRIES) { /* too many */
log(LOG_ERR, "vinum: can't allocate table space to trace memory allocation");
@ -97,7 +97,6 @@ MMalloc(int size, char *file, int line)
if (result == NULL)
log(LOG_ERR, "vinum: can't allocate %d bytes from %s:%d\n", size, file, line);
else {
me.flags = 0; /* allocation via malloc */
s = splhigh();
for (i = 0; i < malloccount; i++) {
if (((result + size) > malloced[i].address)
@ -113,12 +112,11 @@ MMalloc(int size, char *file, int line)
f++; /* skip the / */
i = malloccount++;
total_malloced += size;
malloced[i].address = result;
getmicrotime(&malloced[i].time);
malloced[i].seq = mallocseq++;
malloced[i].size = size;
malloced[i].line = line;
malloced[i].seq = seq++;
malloced[i].flags = me.flags;
malloced[i].databuf = me.databuf; /* only used with kva alloc */
malloced[i].address = result;
bcopy(f, malloced[i].file, min(strlen(f) + 1, 16));
}
if (malloccount > highwater)
@ -141,6 +139,23 @@ FFree(void *mem, char *file, int line)
free(mem, M_DEVBUF);
malloccount--;
total_malloced -= malloced[i].size;
if (debug & DEBUG_MEMFREE) { /* keep track of recent frees */
char *f = rindex(file, '/'); /* chop off dirname if present */
if (f == NULL)
f = file;
else
f++; /* skip the / */
getmicrotime(&freeinfo[lastfree].time);
freeinfo[lastfree].seq = malloced[i].seq;
freeinfo[lastfree].size = malloced[i].size;
freeinfo[lastfree].line = line;
freeinfo[lastfree].address = mem;
bcopy(f, freeinfo[lastfree].file, min(strlen(f) + 1, 16));
if (++lastfree == FREECOUNT)
lastfree = 0;
}
if (i < malloccount) /* more coming after */
bcopy(&malloced[i + 1], &malloced[i], (malloccount - i) * sizeof(struct mc));
splx(s);