From d2b90718d25ed6dc8a2bb7f06504e6500dcc7bae Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 30 Oct 2015 12:10:01 +0100 Subject: buffer: add tracing Signed-off-by: Gerd Hoffmann Reviewed-by: Peter Lieven Reviewed-by: Daniel P. Berrange Message-id: 1446203414-4013-7-git-send-email-kraxel@redhat.com --- util/buffer.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'util') diff --git a/util/buffer.c b/util/buffer.c index 234e33d..ae2907e 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); -- cgit v1.1