/*
- * Copyright (c) 2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2008-2010 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <sys/sysctl.h>
#include <stdio.h>
+#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include "netstat.h"
mb_stat_t *mb_stat;
unsigned int njcl, njclbytes;
+mleak_stat_t *mleak_stat;
+struct mleak_table table;
#define KERN_IPC_MB_STAT "kern.ipc.mb_stat"
#define KERN_IPC_NJCL "kern.ipc.njcl"
#define KERN_IPC_NJCL_BYTES "kern.ipc.njclbytes"
+#define KERN_IPC_MLEAK_TABLE "kern.ipc.mleak_table"
+#define KERN_IPC_MLEAK_TOP_TRACE "kern.ipc.mleak_top_trace"
#define MB_STAT_HDR1 "\
class buf active ctotal total cache cached uncached memory\n\
---------- -------- -------- -------- -------- -------- --------\n\
"
+#define MB_LEAK_HDR "\n\
+ calltrace [1] calltrace [2] calltrace [3] calltrace [4] calltrace [5] \n\
+ ------------------ ------------------ ------------------ ------------------ ------------------ \n\
+"
+
+#define MB_LEAK_SPACING " "
static const char *mbpr_state(int);
static const char *mbpr_mem(u_int32_t);
static int mbpr_getdata(void);
void
mbpr(void)
{
- unsigned long totmem = 0, totfree = 0, totmbufs, totused;
+ unsigned long totmem = 0, totfree = 0, totmbufs, totused, totreturned = 0;
double totpct;
u_int32_t m_msize, m_mbufs = 0, m_clfree = 0, m_bigclfree = 0;
u_int32_t m_mbufclfree = 0, m_mbufbigclfree = 0;
mem = cp->mbcl_ctotal * cp->mbcl_size;
totmem += mem;
+ totreturned += cp->mbcl_release_cnt;
totfree += (cp->mbcl_mc_cached + cp->mbcl_infree) *
cp->mbcl_size;
if (mflag > 1) {
}
printf("%lu KB allocated to network (%.1f%% in use)\n",
totmem / 1024, totpct);
+ printf("%lu KB returned to the system\n", totreturned / 1024);
printf("%u requests for memory denied\n", (unsigned int)mbstat.m_drops);
printf("%u requests for memory delayed\n", (unsigned int)mbstat.m_wait);
printf("%u calls to drain routines\n", (unsigned int)mbstat.m_drain);
free(mb_stat);
+ mb_stat = NULL;
+
+ if (mleak_stat != NULL) {
+ mleak_trace_stat_t *mltr;
+
+ printf("\nmbuf leak detection table:\n");
+ printf("\ttotal captured: %u (one per %u)\n"
+ "\ttotal allocs outstanding: %llu\n"
+ "\tnew hash recorded: %llu allocs, %llu traces\n"
+ "\thash collisions: %llu allocs, %llu traces\n"
+ "\toverwrites: %llu allocs, %llu traces\n"
+ "\tlock conflicts: %llu\n\n",
+ table.mleak_capture / table.mleak_sample_factor,
+ table.mleak_sample_factor,
+ table.outstanding_allocs,
+ table.alloc_recorded, table.trace_recorded,
+ table.alloc_collisions, table.trace_collisions,
+ table.alloc_overwrites, table.trace_overwrites,
+ table.total_conflicts);
+
+ printf("top %d outstanding traces:\n", mleak_stat->ml_cnt);
+ for (i = 0; i < mleak_stat->ml_cnt; i++) {
+ mltr = &mleak_stat->ml_trace[i];
+ printf("[%d] %llu outstanding alloc(s), "
+ "%llu hit(s), %llu collision(s)\n", (i + 1),
+ mltr->mltr_allocs, mltr->mltr_hitcount,
+ mltr->mltr_collisions);
+ }
+
+ printf(MB_LEAK_HDR);
+ for (i = 0; i < MLEAK_STACK_DEPTH; i++) {
+ int j;
+
+ printf("%2d: ", (i + 1));
+ for (j = 0; j < mleak_stat->ml_cnt; j++) {
+ mltr = &mleak_stat->ml_trace[j];
+ if (i < mltr->mltr_depth) {
+ if (mleak_stat->ml_isaddr64) {
+ printf("0x%0llx ",
+ mltr->mltr_addr[i]);
+ } else {
+ printf("0x%08x ",
+ (u_int32_t)mltr->mltr_addr[i]);
+ }
+ } else {
+ printf(MB_LEAK_SPACING);
+ }
+ }
+ printf("\n");
+ }
+ free(mleak_stat);
+ mleak_stat = NULL;
+ }
}
static const char *
goto done;
}
+ /* mbuf leak detection! */
+ if (mflag > 3) {
+ errno = 0;
+ len = sizeof (table);
+ if (sysctlbyname(KERN_IPC_MLEAK_TABLE, &table, &len, 0, 0) ==
+ -1 && errno != ENXIO) {
+ (void) fprintf(stderr, "error %d getting %s\n", errno,
+ KERN_IPC_MLEAK_TABLE);
+ goto done;
+ } else if (errno == ENXIO) {
+ (void) fprintf(stderr, "mbuf leak detection is not "
+ "enabled in the kernel.\n");
+ goto skip;
+ }
+
+ if (sysctlbyname(KERN_IPC_MLEAK_TOP_TRACE, NULL, &len,
+ 0, 0) == -1) {
+ (void) fprintf(stderr, "Error retrieving length for "
+ "%s: %d\n", KERN_IPC_MB_STAT, errno);
+ goto done;
+ }
+
+ mleak_stat = calloc(1, len);
+ if (mleak_stat == NULL) {
+ (void) fprintf(stderr, "Error allocating %lu bytes "
+ "for sysctl data\n", len);
+ goto done;
+ }
+
+ if (sysctlbyname(KERN_IPC_MLEAK_TOP_TRACE, mleak_stat, &len,
+ 0, 0) == -1) {
+ (void) fprintf(stderr, "error %d getting %s\n", errno,
+ KERN_IPC_MLEAK_TOP_TRACE);
+ goto done;
+ }
+ }
+
+skip:
len = sizeof (njcl);
(void) sysctlbyname(KERN_IPC_NJCL, &njcl, &len, 0, 0);
len = sizeof (njclbytes);
error = 0;
done:
- if (error != 0 && mb_stat != NULL)
+ if (error != 0 && mb_stat != NULL) {
free(mb_stat);
+ mb_stat = NULL;
+ }
+
+ if (error != 0 && mleak_stat != NULL) {
+ free(mleak_stat);
+ mleak_stat = NULL;
+ }
return (error);
}
projects / apple / network_cmds.git / blobdiff