Add support for tagging GrUniqueKeys with a debug string

Change-Id: Ie7d56214fdee7a19a1e8ca3869e5e4d5e72cedf8
Reviewed-on: https://skia-review.googlesource.com/6632
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>

1 files changed, 16 insertions, 6 deletions

diff --git a/include/gpu/GrResourceKey.h b/include/gpu/GrResourceKey.h
index 0ead35ea3f..8ba1140765 100644
--- a/include/gpu/GrResourceKey.h
+++ b/include/gpu/GrResourceKey.h
@@ -9,10 +9,11 @@
 #ifndef GrResourceKey_DEFINED
 #define GrResourceKey_DEFINED
 
+#include "../private/SkOnce.h"
 #include "../private/SkTemplates.h"
 #include "GrTypes.h"
 #include "SkData.h"
-#include "../private/SkOnce.h"
+#include "SkString.h"
 
 uint32_t GrResourceKeyHash(const uint32_t* data, size_t size);
 
@@ -239,6 +240,7 @@ public:
     GrUniqueKey& operator=(const GrUniqueKey& that) {
         this->INHERITED::operator=(that);
         this->setCustomData(sk_ref_sp(that.getCustomData()));
+        SkDEBUGCODE(fTag = that.fTag;)
         return *this;
     }
 
@@ -254,21 +256,28 @@ public:
         return fData.get();
     }
 
+    SkDEBUGCODE(const char* tag() const { return fTag.c_str(); })
+
     class Builder : public INHERITED::Builder {
     public:
-        Builder(GrUniqueKey* key, Domain domain, int data32Count)
-            : INHERITED::Builder(key, domain, data32Count) {}
+        Builder(GrUniqueKey* key, Domain type, int data32Count, const char* tag = nullptr)
+                : INHERITED::Builder(key, type, data32Count) {
+            SkDEBUGCODE(key->fTag = tag;)
+            (void) tag;  // suppress unused named param warning.
+        }
 
         /** Used to build a key that wraps another key and adds additional data. */
-        Builder(GrUniqueKey* key, const GrUniqueKey& innerKey, Domain domain,
-                int extraData32Cnt)
-            : INHERITED::Builder(key, domain, Data32CntForInnerKey(innerKey) + extraData32Cnt) {
+        Builder(GrUniqueKey* key, const GrUniqueKey& innerKey, Domain domain, int extraData32Cnt,
+                const char* tag = nullptr)
+                : INHERITED::Builder(key, domain, Data32CntForInnerKey(innerKey) + extraData32Cnt) {
             SkASSERT(&innerKey != key);
             // add the inner key to the end of the key so that op[] can be indexed normally.
             uint32_t* innerKeyData = &this->operator[](extraData32Cnt);
             const uint32_t* srcData = innerKey.data();
             (*innerKeyData++) = innerKey.domain();
             memcpy(innerKeyData, srcData, innerKey.dataSize());
+            SkDEBUGCODE(key->fTag = tag;)
+            (void) tag;  // suppress unused named param warning.
         }
 
     private:
@@ -280,6 +289,7 @@ public:
 
 private:
     sk_sp<SkData> fData;
+    SkDEBUGCODE(SkString fTag;)
 };
 
 /**