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authorDave Barach <dave@barachs.net>2019-06-15 12:46:13 -0400
committerDave Barach <dave@barachs.net>2019-06-16 10:24:43 -0400
commitd67a428b3b2183cd78d7fca82e8afe2f26387810 (patch)
treef5209028aa2cfb222f35bb0c970685b8d2d777d8 /src/vppinfra
parentc898a4f5bae84148ddec462a9510dee99e3da67d (diff)
vlib: add "memory-trace stats-segment"
Type: feature Change-Id: Ie020fd7e2618284a63efbeb9895068f27c0fb9ab Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vppinfra')
-rw-r--r--src/vppinfra/dlmalloc.c29
-rw-r--r--src/vppinfra/dlmalloc.h5
-rw-r--r--src/vppinfra/mem.h2
-rw-r--r--src/vppinfra/mem_dlmalloc.c31
-rw-r--r--src/vppinfra/mem_mheap.c6
5 files changed, 52 insertions, 21 deletions
diff --git a/src/vppinfra/dlmalloc.c b/src/vppinfra/dlmalloc.c
index 60bd8d55646..524c57b210b 100644
--- a/src/vppinfra/dlmalloc.c
+++ b/src/vppinfra/dlmalloc.c
@@ -4093,7 +4093,7 @@ void mspace_get_address_and_size (mspace msp, char **addrp, size_t *sizep)
{
mstate ms;
msegment *this_seg;
-
+
ms = (mstate)msp;
this_seg = &ms->seg;
@@ -4155,9 +4155,18 @@ int mspace_enable_disable_trace (mspace msp, int enable)
return (was_enabled);
}
-void* mspace_get_aligned (mspace msp,
+int mspace_is_traced (mspace msp)
+{
+ mstate ms = (mstate)msp;
+
+ if (use_trace(ms))
+ return 1;
+ return 0;
+}
+
+void* mspace_get_aligned (mspace msp,
unsigned long n_user_data_bytes,
- unsigned long align,
+ unsigned long align,
unsigned long align_offset) {
char *rv;
unsigned long searchp;
@@ -4165,13 +4174,13 @@ void* mspace_get_aligned (mspace msp,
mstate ms = (mstate)msp;
/*
- * Allocate space for the "Where's Waldo?" pointer
+ * Allocate space for the "Where's Waldo?" pointer
* the base of the dlmalloc object
*/
n_user_data_bytes += sizeof(unsigned);
- /*
- * Alignment requests less than the size of an mmx vector are ignored
+ /*
+ * Alignment requests less than the size of an mmx vector are ignored
*/
if (align < sizeof (uword)) {
rv = mspace_malloc (msp, n_user_data_bytes);
@@ -4181,7 +4190,7 @@ void* mspace_get_aligned (mspace msp,
if (use_trace(ms)) {
mchunkptr p = mem2chunk(rv);
size_t psize = chunksize(p);
-
+
mheap_get_trace ((unsigned long)rv + sizeof (unsigned), psize);
}
@@ -4196,15 +4205,15 @@ void* mspace_get_aligned (mspace msp,
* Alignment requests greater than 4K must be at offset zero,
* and must be freed using mspace_free_no_offset - or never freed -
* since the "Where's Waldo?" pointer would waste too much space.
- *
- * Waldo is the address of the chunk of memory returned by mspace_malloc,
+ *
+ * Waldo is the address of the chunk of memory returned by mspace_malloc,
* which we need later to call mspace_free...
*/
if (align > 4<<10 || align_offset == ~0UL) {
n_user_data_bytes -= sizeof(unsigned);
assert(align_offset == 0);
rv = internal_memalign(ms, (size_t)align, n_user_data_bytes);
-
+
/* Trace the allocation */
if (rv && use_trace(ms)) {
mchunkptr p = mem2chunk(rv);
diff --git a/src/vppinfra/dlmalloc.h b/src/vppinfra/dlmalloc.h
index 216df4737ca..b8adf74831d 100644
--- a/src/vppinfra/dlmalloc.h
+++ b/src/vppinfra/dlmalloc.h
@@ -1447,9 +1447,9 @@ DLMALLOC_EXPORT int mspace_trim(mspace msp, size_t pad);
*/
DLMALLOC_EXPORT int mspace_mallopt(int, int);
-DLMALLOC_EXPORT void* mspace_get_aligned (mspace msp,
+DLMALLOC_EXPORT void* mspace_get_aligned (mspace msp,
unsigned long n_user_data_bytes,
- unsigned long align,
+ unsigned long align,
unsigned long align_offset);
DLMALLOC_EXPORT int mspace_is_heap_object (mspace msp, void *p);
@@ -1463,6 +1463,7 @@ DLMALLOC_EXPORT void *mspace_least_addr (mspace msp);
DLMALLOC_EXPORT void mheap_get_trace (uword offset, uword size);
DLMALLOC_EXPORT void mheap_put_trace (uword offset, uword size);
DLMALLOC_EXPORT int mspace_enable_disable_trace (mspace msp, int enable);
+DLMALLOC_EXPORT int mspace_is_traced (mspace msp);
#endif /* MSPACES */
diff --git a/src/vppinfra/mem.h b/src/vppinfra/mem.h
index 1e14698af98..e31ec82e7c5 100644
--- a/src/vppinfra/mem.h
+++ b/src/vppinfra/mem.h
@@ -274,6 +274,8 @@ void clib_mem_validate (void);
void clib_mem_trace (int enable);
+int clib_mem_is_traced (void);
+
typedef struct
{
/* Total number of objects allocated. */
diff --git a/src/vppinfra/mem_dlmalloc.c b/src/vppinfra/mem_dlmalloc.c
index e83e0e89d21..99f1c04f3eb 100644
--- a/src/vppinfra/mem_dlmalloc.c
+++ b/src/vppinfra/mem_dlmalloc.c
@@ -56,6 +56,10 @@ typedef struct
/* Hash table mapping mheap offset to trace index. */
uword *trace_index_by_offset;
+
+ /* So we can easily shut off current segment trace, if any */
+ void *current_traced_mheap;
+
} mheap_trace_main_t;
mheap_trace_main_t mheap_trace_main;
@@ -69,7 +73,7 @@ mheap_get_trace (uword offset, uword size)
mheap_trace_t trace;
uword save_enabled;
- if (tm->enabled == 0)
+ if (tm->enabled == 0 || (clib_mem_get_heap () != tm->current_traced_mheap))
return;
/* Spurious Coverity warnings be gone. */
@@ -80,11 +84,6 @@ mheap_get_trace (uword offset, uword size)
if (n_callers == 0)
return;
- /* $$$ This looks like dreck to remove... */
- if (0)
- for (i = n_callers; i < ARRAY_LEN (trace.callers); i++)
- trace.callers[i] = 0;
-
clib_spinlock_lock (&tm->lock);
/* Turn off tracing to avoid embarrassment... */
@@ -291,7 +290,8 @@ format_mheap_trace (u8 * s, va_list * va)
int i;
clib_spinlock_lock (&tm->lock);
- if (vec_len (tm->traces) > 0)
+ if (vec_len (tm->traces) > 0 &&
+ clib_mem_get_heap () == tm->current_traced_mheap)
{
have_traces = 1;
@@ -372,7 +372,8 @@ format_mheap (u8 * s, va_list * va)
format (s, "\n max total allocated %U", format_msize, mi.usmblks);
}
- s = format (s, "\n%U", format_mheap_trace, tm, verbose);
+ if (mspace_is_traced (heap))
+ s = format (s, "\n%U", format_mheap_trace, tm, verbose);
return s;
}
@@ -404,9 +405,21 @@ void
clib_mem_trace (int enable)
{
mheap_trace_main_t *tm = &mheap_trace_main;
+ void *current_heap = clib_mem_get_heap ();
tm->enabled = enable;
- mheap_trace (clib_mem_get_heap (), enable);
+ mheap_trace (current_heap, enable);
+
+ if (enable)
+ tm->current_traced_mheap = current_heap;
+ else
+ tm->current_traced_mheap = 0;
+}
+
+int
+clib_mem_is_traced (void)
+{
+ return mspace_is_traced (clib_mem_get_heap ());
}
uword
diff --git a/src/vppinfra/mem_mheap.c b/src/vppinfra/mem_mheap.c
index 4077bf279fd..3046bd22d0a 100644
--- a/src/vppinfra/mem_mheap.c
+++ b/src/vppinfra/mem_mheap.c
@@ -148,6 +148,12 @@ clib_mem_trace (int enable)
mheap_trace (clib_mem_get_heap (), enable);
}
+int
+clib_mem_is_traced (void)
+{
+ return mheap_is_traced (clib_mem_get_heap ());
+}
+
/*
* fd.io coding-style-patch-verification: ON
*