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authorRobert Ellison <papillo@vmware.com>2009-05-08 14:51:11 -0600
committerRobert Ellison <papillo@vmware.com>2009-05-08 16:57:08 -0600
commit1d112207716774b32c0cc846304c2c50bf40e812 (patch)
tree9946cc3009f605546109b9c3b7ea8f2d37d275e4 /src/mesa/drivers/dri/intel
parentfc6d89145df6fc7a1c2ce648b474c3f203ca87c7 (diff)
i965: improve debug logging
Looking for memory leaks that were causing crashes in my environment in a situation where valgrind would not work, I ended up improving the i965 debug traces so I could better see where the memory was being allocated and where it was going, in the regions and miptrees code, and in the state caches. These traces were specific enough that external scripts could determine what elements were not being released, and where the memory leaks were. I also ended up creating my own backtrace code in intel_regions.c, to determine exactly where regions were being allocated and for what, since valgrind wasn't working. Because it was useful, I left it in, but disabled and compiled out. It can be activated by changing a flag at the top of the file.
Diffstat (limited to 'src/mesa/drivers/dri/intel')
-rw-r--r--src/mesa/drivers/dri/intel/intel_mipmap_tree.c6
-rw-r--r--src/mesa/drivers/dri/intel/intel_regions.c88
2 files changed, 80 insertions, 14 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
index 6e1e034e53..f3652720ec 100644
--- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
@@ -62,9 +62,10 @@ intel_miptree_create_internal(struct intel_context *intel,
GLboolean ok;
struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
- DBG("%s target %s format %s level %d..%d\n", __FUNCTION__,
+ DBG("%s target %s format %s level %d..%d <-- %p\n", __FUNCTION__,
_mesa_lookup_enum_by_nr(target),
- _mesa_lookup_enum_by_nr(internal_format), first_level, last_level);
+ _mesa_lookup_enum_by_nr(internal_format),
+ first_level, last_level, mt);
mt->target = target_to_target(target);
mt->internal_format = internal_format;
@@ -89,6 +90,7 @@ intel_miptree_create_internal(struct intel_context *intel,
if (!ok) {
free(mt);
+ DBG("%s not okay - returning NULL\n", __FUNCTION__);
return NULL;
}
diff --git a/src/mesa/drivers/dri/intel/intel_regions.c b/src/mesa/drivers/dri/intel/intel_regions.c
index 0aa5b8c02c..534e75efe1 100644
--- a/src/mesa/drivers/dri/intel/intel_regions.c
+++ b/src/mesa/drivers/dri/intel/intel_regions.c
@@ -52,12 +52,66 @@
#define FILE_DEBUG_FLAG DEBUG_REGION
+/* This should be set to the maximum backtrace size desired.
+ * Set it to 0 to disable backtrace debugging.
+ */
+#define DEBUG_BACKTRACE_SIZE 0
+
+#if DEBUG_BACKTRACE_SIZE == 0
+/* Use the standard debug output */
+#define _DBG(...) DBG(__VA_ARGS__)
+#else
+/* Use backtracing debug output */
+#define _DBG(...) {debug_backtrace(); DBG(__VA_ARGS__);}
+
+/* Backtracing debug support */
+#include <execinfo.h>
+
+static void
+debug_backtrace(void)
+{
+ void *trace[DEBUG_BACKTRACE_SIZE];
+ char **strings = NULL;
+ int traceSize;
+ register int i;
+
+ traceSize = backtrace(trace, DEBUG_BACKTRACE_SIZE);
+ strings = backtrace_symbols(trace, traceSize);
+ if (strings == NULL) {
+ DBG("no backtrace:");
+ return;
+ }
+
+ /* Spit out all the strings with a colon separator. Ignore
+ * the first, since we don't really care about the call
+ * to debug_backtrace() itself. Skip until the final "/" in
+ * the trace to avoid really long lines.
+ */
+ for (i = 1; i < traceSize; i++) {
+ char *p = strings[i], *slash = strings[i];
+ while (*p) {
+ if (*p++ == '/') {
+ slash = p;
+ }
+ }
+
+ DBG("%s:", slash);
+ }
+
+ /* Free up the memory, and we're done */
+ free(strings);
+}
+
+#endif
+
+
+
/* XXX: Thread safety?
*/
GLubyte *
intel_region_map(struct intel_context *intel, struct intel_region *region)
{
- DBG("%s\n", __FUNCTION__);
+ _DBG("%s %p\n", __FUNCTION__, region);
if (!region->map_refcount++) {
if (region->pbo)
intel_region_cow(intel, region);
@@ -72,7 +126,7 @@ intel_region_map(struct intel_context *intel, struct intel_region *region)
void
intel_region_unmap(struct intel_context *intel, struct intel_region *region)
{
- DBG("%s\n", __FUNCTION__);
+ _DBG("%s %p\n", __FUNCTION__, region);
if (!--region->map_refcount) {
dri_bo_unmap(region->buffer);
region->map = NULL;
@@ -87,10 +141,10 @@ intel_region_alloc_internal(struct intel_context *intel,
{
struct intel_region *region;
- DBG("%s\n", __FUNCTION__);
-
- if (buffer == NULL)
+ if (buffer == NULL) {
+ _DBG("%s <-- NULL\n", __FUNCTION__);
return NULL;
+ }
region = calloc(sizeof(*region), 1);
region->cpp = cpp;
@@ -104,6 +158,7 @@ intel_region_alloc_internal(struct intel_context *intel,
region->tiling = I915_TILING_NONE;
region->bit_6_swizzle = I915_BIT_6_SWIZZLE_NONE;
+ _DBG("%s <-- %p\n", __FUNCTION__, region);
return region;
}
@@ -158,7 +213,7 @@ void
intel_region_reference(struct intel_region **dst, struct intel_region *src)
{
if (src)
- DBG("%s %p %d\n", __FUNCTION__, src, src->refcount);
+ _DBG("%s %p %d\n", __FUNCTION__, src, src->refcount);
assert(*dst == NULL);
if (src) {
@@ -172,10 +227,12 @@ intel_region_release(struct intel_region **region_handle)
{
struct intel_region *region = *region_handle;
- if (region == NULL)
+ if (region == NULL) {
+ _DBG("%s NULL\n", __FUNCTION__);
return;
+ }
- DBG("%s %p %d\n", __FUNCTION__, region, region->refcount - 1);
+ _DBG("%s %p %d\n", __FUNCTION__, region, region->refcount - 1);
ASSERT(region->refcount > 0);
region->refcount--;
@@ -251,7 +308,7 @@ intel_region_data(struct intel_context *intel,
{
GLboolean locked = GL_FALSE;
- DBG("%s\n", __FUNCTION__);
+ _DBG("%s\n", __FUNCTION__);
if (intel == NULL)
return;
@@ -293,7 +350,7 @@ intel_region_copy(struct intel_context *intel,
GLuint src_offset,
GLuint srcx, GLuint srcy, GLuint width, GLuint height)
{
- DBG("%s\n", __FUNCTION__);
+ _DBG("%s\n", __FUNCTION__);
if (intel == NULL)
return;
@@ -326,7 +383,7 @@ intel_region_fill(struct intel_context *intel,
GLuint dstx, GLuint dsty,
GLuint width, GLuint height, GLuint color)
{
- DBG("%s\n", __FUNCTION__);
+ _DBG("%s\n", __FUNCTION__);
if (intel == NULL)
return;
@@ -356,6 +413,8 @@ intel_region_attach_pbo(struct intel_context *intel,
if (region->pbo == pbo)
return;
+ _DBG("%s %p %p\n", __FUNCTION__, region, pbo);
+
/* If there is already a pbo attached, break the cow tie now.
* Don't call intel_region_release_pbo() as that would
* unnecessarily allocate a new buffer we would have to immediately
@@ -385,6 +444,7 @@ void
intel_region_release_pbo(struct intel_context *intel,
struct intel_region *region)
{
+ _DBG("%s %p\n", __FUNCTION__, region);
assert(region->buffer == region->pbo->buffer);
region->pbo->region = NULL;
region->pbo = NULL;
@@ -412,7 +472,7 @@ intel_region_cow(struct intel_context *intel, struct intel_region *region)
assert(region->cpp * region->pitch * region->height == pbo->Base.Size);
- DBG("%s (%d bytes)\n", __FUNCTION__, pbo->Base.Size);
+ _DBG("%s %p (%d bytes)\n", __FUNCTION__, region, pbo->Base.Size);
/* Now blit from the texture buffer to the new buffer:
*/
@@ -459,6 +519,10 @@ intel_recreate_static(struct intel_context *intel,
if (region == NULL) {
region = calloc(sizeof(*region), 1);
region->refcount = 1;
+ _DBG("%s creating new region %p\n", __FUNCTION__, region);
+ }
+ else {
+ _DBG("%s %p\n", __FUNCTION__, region);
}
if (intel->ctx.Visual.rgbBits == 24)