Changeset 46057 in webkit for trunk/JavaScriptCore/assembler/AssemblerBuffer.h

Timestamp:

Jul 17, 2009, 2:17:45 PM (16 years ago)

Author:

[email protected]

Message:

2009-07-17 Gabor Loki <​[email protected]>

Reviewed by Gavin Barraclough.

Extend AssemblerBuffer with constant pool handling mechanism.
​https://bugs.webkit.org/show_bug.cgi?id=24986

Add a platform independed constant pool framework.
This pool can store 32 or 64 bits values which is enough to hold
any integer, pointer or double constant.

• assembler/AssemblerBuffer.h: (JSC::AssemblerBuffer::putIntUnchecked): (JSC::AssemblerBuffer::putInt64Unchecked): (JSC::AssemblerBuffer::append): (JSC::AssemblerBuffer::grow):
• assembler/AssemblerBufferWithConstantPool.h: Added. (JSC::):

File:

• trunk/JavaScriptCore/assembler/AssemblerBuffer.h (modified) (3 diffs)

trunk/JavaScriptCore/assembler/AssemblerBuffer.h

@@ -96 +96 @@
         void putIntUnchecked(int value)
         {
+            ASSERT(!(m_size > m_capacity - 4));
             *reinterpret_cast<int*>(&m_buffer[m_size]) = value;
             m_size += 4;
@@ -102 +103 @@
         void putInt64Unchecked(int64_t value)
         {
+            ASSERT(!(m_size > m_capacity - 8));
             *reinterpret_cast<int64_t*>(&m_buffer[m_size]) = value;
             m_size += 8;
@@ -138 +140 @@
         }
 
-    private:
-        void grow()
+    protected:
+        void append(const char* data, int size)
         {
-            m_capacity += m_capacity / 2;
+            if (m_size > m_capacity - size)
+                grow(size);
+
+            memcpy(m_buffer + m_size, data, size);
+            m_size += size;
+        }
+
+        void grow(int extraCapacity = 0)
+        {
+            m_capacity += m_capacity / 2 + extraCapacity;
 
             if (m_buffer == m_inlineBuffer) {