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authorGerd Hoffmann <kraxel@redhat.com>2015-10-30 12:10:01 +0100
committerGerd Hoffmann <kraxel@redhat.com>2015-11-05 09:08:48 +0100
commitd2b90718d25ed6dc8a2bb7f06504e6500dcc7bae (patch)
tree2d047ed544d2c4f3cac05a4a16f40098e7bfff1b /util
parent1ff36b5d4d00a4e3633eb960bf2be562f5e47dbf (diff)
buffer: add tracing
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Peter Lieven <pl@kamp.de> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1446203414-4013-7-git-send-email-kraxel@redhat.com
Diffstat (limited to 'util')
-rw-r--r--util/buffer.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/util/buffer.c b/util/buffer.c
index 234e33d5c1..ae2907ebd4 100644
--- a/util/buffer.c
+++ b/util/buffer.c
@@ -19,6 +19,7 @@
*/
#include "qemu/buffer.h"
+#include "trace.h"
#define BUFFER_MIN_INIT_SIZE 4096
#define BUFFER_MIN_SHRINK_SIZE 65536
@@ -34,6 +35,8 @@ void buffer_init(Buffer *buffer, const char *name, ...)
void buffer_shrink(Buffer *buffer)
{
+ size_t old;
+
/*
* Only shrink in case the used size is *much* smaller than the
* capacity, to avoid bumping up & down the buffers all the time.
@@ -44,17 +47,25 @@ void buffer_shrink(Buffer *buffer)
return;
}
+ old = buffer->capacity;
buffer->capacity = pow2ceil(buffer->offset);
buffer->capacity = MAX(buffer->capacity, BUFFER_MIN_SHRINK_SIZE);
buffer->buffer = g_realloc(buffer->buffer, buffer->capacity);
+ trace_buffer_resize(buffer->name ?: "unnamed",
+ old, buffer->capacity);
}
void buffer_reserve(Buffer *buffer, size_t len)
{
+ size_t old;
+
if ((buffer->capacity - buffer->offset) < len) {
+ old = buffer->capacity;
buffer->capacity = pow2ceil(buffer->offset + len);
buffer->capacity = MAX(buffer->capacity, BUFFER_MIN_INIT_SIZE);
buffer->buffer = g_realloc(buffer->buffer, buffer->capacity);
+ trace_buffer_resize(buffer->name ?: "unnamed",
+ old, buffer->capacity);
}
}
@@ -75,6 +86,7 @@ void buffer_reset(Buffer *buffer)
void buffer_free(Buffer *buffer)
{
+ trace_buffer_free(buffer->name ?: "unnamed", buffer->capacity);
g_free(buffer->buffer);
g_free(buffer->name);
buffer->offset = 0;
@@ -98,6 +110,9 @@ void buffer_advance(Buffer *buffer, size_t len)
void buffer_move_empty(Buffer *to, Buffer *from)
{
+ trace_buffer_move_empty(to->name ?: "unnamed",
+ from->offset,
+ from->name ?: "unnamed");
assert(to->offset == 0);
g_free(to->buffer);
@@ -117,6 +132,9 @@ void buffer_move(Buffer *to, Buffer *from)
return;
}
+ trace_buffer_move(to->name ?: "unnamed",
+ from->offset,
+ from->name ?: "unnamed");
buffer_reserve(to, from->offset);
buffer_append(to, from->buffer, from->offset);