1 files changed, 117 insertions, 0 deletions
diff --git a/vendor/github.com/chenzhuoyu/iasm/x86_64/pools.go b/vendor/github.com/chenzhuoyu/iasm/x86_64/pools.go
new file mode 100644
index 000000000..06f85ac26
--- /dev/null
+++ b/vendor/github.com/chenzhuoyu/iasm/x86_64/pools.go
@@ -0,0 +1,117 @@
+package x86_64
+
+import (
+    `sync`
+)
+
+var (
+    labelPool         sync.Pool
+    programPool       sync.Pool
+    instructionPool   sync.Pool
+    memoryOperandPool sync.Pool
+)
+
+func freeLabel(v *Label) {
+    labelPool.Put(v)
+}
+
+func clearLabel(p *Label) *Label {
+    *p = Label{}
+    return p
+}
+
+// CreateLabel creates a new Label, it may allocate a new one or grab one from a pool.
+func CreateLabel(name string) *Label {
+    var p *Label
+    var v interface{}
+
+    /* attempt to grab from the pool */
+    if v = labelPool.Get(); v == nil {
+        p = new(Label)
+    } else {
+        p = clearLabel(v.(*Label))
+    }
+
+    /* initialize the label */
+    p.refs = 1
+    p.Name = name
+    return p
+}
+
+func newProgram(arch *Arch) *Program {
+    var p *Program
+    var v interface{}
+
+    /* attempt to grab from the pool */
+    if v = programPool.Get(); v == nil {
+        p = new(Program)
+    } else {
+        p = clearProgram(v.(*Program))
+    }
+
+    /* initialize the program */
+    p.arch = arch
+    return p
+}
+
+func freeProgram(p *Program) {
+    programPool.Put(p)
+}
+
+func clearProgram(p *Program) *Program {
+    *p = Program{}
+    return p
+}
+
+func newInstruction(name string, argc int, argv Operands) *Instruction {
+    var v interface{}
+    var p *Instruction
+
+    /* attempt to grab from the pool */
+    if v = instructionPool.Get(); v == nil {
+        p = new(Instruction)
+    } else {
+        p = clearInstruction(v.(*Instruction))
+    }
+
+    /* initialize the instruction */
+    p.name = name
+    p.argc = argc
+    p.argv = argv
+    return p
+}
+
+func freeInstruction(v *Instruction) {
+    instructionPool.Put(v)
+}
+
+func clearInstruction(p *Instruction) *Instruction {
+    *p = Instruction { prefix: p.prefix[:0] }
+    return p
+}
+
+func freeMemoryOperand(m *MemoryOperand) {
+    memoryOperandPool.Put(m)
+}
+
+func clearMemoryOperand(m *MemoryOperand) *MemoryOperand {
+    *m = MemoryOperand{}
+    return m
+}
+
+// CreateMemoryOperand creates a new MemoryOperand, it may allocate a new one or grab one from a pool.
+func CreateMemoryOperand() *MemoryOperand {
+    var v interface{}
+    var p *MemoryOperand
+
+    /* attempt to grab from the pool */
+    if v = memoryOperandPool.Get(); v == nil {
+        p = new(MemoryOperand)
+    } else {
+        p = clearMemoryOperand(v.(*MemoryOperand))
+    }
+
+    /* initialize the memory operand */
+    p.refs = 1
+    return p
+}