auto import from //depot/cupcake/@135843

1 files changed, 92 insertions, 0 deletions

diff --git a/src/core/SkGlobals.cpp b/src/core/SkGlobals.cpp
new file mode 100644
index 0000000..bc72b97
--- /dev/null
+++ b/src/core/SkGlobals.cpp
@@ -0,0 +1,92 @@
+/* libs/graphics/sgl/SkGlobals.cpp
+**
+** Copyright 2006, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
+**
+**     http://www.apache.org/licenses/LICENSE-2.0 
+**
+** Unless required by applicable law or agreed to in writing, software 
+** distributed under the License is distributed on an "AS IS" BASIS, 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+** See the License for the specific language governing permissions and 
+** limitations under the License.
+*/
+
+#include "SkGlobals.h"
+#include "SkThread.h"
+
+SkGlobals::Rec::~Rec()
+{
+}
+
+SkGlobals::Rec* SkGlobals::Find(uint32_t tag, Rec* (*create_proc)())
+{
+    SkGlobals::BootStrap&   bootstrap = SkGlobals::GetBootStrap();
+
+    Rec* rec = bootstrap.fHead;
+    while (rec)
+    {
+        if (rec->fTag == tag)
+            return rec;
+        rec = rec->fNext;
+    }
+
+    if (create_proc == NULL) // no create proc, just return not found
+        return NULL;
+
+    // if we get here, we may need to create one. First grab the mutex, and
+    // search again, creating one if its not found the 2nd time.
+
+    bootstrap.fMutex.acquire();
+
+    // search again, now that we have the mutex. Odds are it won't be there, but we check again
+    // just in case it was added by another thread before we grabbed the mutex
+
+    Rec*& head = bootstrap.fHead;
+    rec = head;
+    while (rec)
+    {
+        if (rec->fTag == tag)
+            break;
+        rec = rec->fNext;
+    }
+
+    if (rec == NULL && (rec = create_proc()) != NULL)
+    {
+        rec->fTag = tag;
+        rec->fNext = head;
+        bootstrap.fHead = rec;
+    }
+
+    bootstrap.fMutex.release();
+    return rec;
+}
+
+void SkGlobals::Init()
+{
+}
+
+void SkGlobals::Term()
+{
+    SkGlobals::BootStrap&   bootstrap = SkGlobals::GetBootStrap();
+
+    bootstrap.fMutex.acquire();
+
+    Rec*&   head = bootstrap.fHead;
+    Rec*    rec = head;
+
+    while (rec)
+    {
+        Rec* next = rec->fNext;
+        SkDELETE(rec);
+        rec = next;
+    }
+
+    bootstrap.fHead = NULL;
+    bootstrap.fMutex.release();
+}
+
+