From d90e7cbac65c5792ce312ee82fbe03a5dfc98c6f Mon Sep 17 00:00:00 2001
From: Rob Pike <r@golang.org>
Date: Tue, 9 Jun 2009 09:53:44 -0700
Subject: mv src/lib to src/pkg tests: all.bash passes, gobuild still works,
 godoc still works.

R=rsc
OCL=30096
CL=30102
---
 src/pkg/runtime/mfixalloc.c | 56 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 src/pkg/runtime/mfixalloc.c

(limited to 'src/pkg/runtime/mfixalloc.c')

diff --git a/src/pkg/runtime/mfixalloc.c b/src/pkg/runtime/mfixalloc.c
new file mode 100644
index 0000000000..dd4f3f2518
--- /dev/null
+++ b/src/pkg/runtime/mfixalloc.c
@@ -0,0 +1,56 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Fixed-size object allocator.  Returned memory is not zeroed.
+//
+// See malloc.h for overview.
+
+#include "runtime.h"
+#include "malloc.h"
+
+// Initialize f to allocate objects of the given size,
+// using the allocator to obtain chunks of memory.
+void
+FixAlloc_Init(FixAlloc *f, uintptr size, void *(*alloc)(uintptr), void (*first)(void*, byte*), void *arg)
+{
+	f->size = size;
+	f->alloc = alloc;
+	f->first = first;
+	f->arg = arg;
+	f->list = nil;
+	f->chunk = nil;
+	f->nchunk = 0;
+}
+
+void*
+FixAlloc_Alloc(FixAlloc *f)
+{
+	void *v;
+
+	if(f->list) {
+		v = f->list;
+		f->list = *(void**)f->list;
+		return v;
+	}
+	if(f->nchunk < f->size) {
+		f->chunk = f->alloc(FixAllocChunk);
+		if(f->chunk == nil)
+			throw("out of memory (FixAlloc)");
+		f->nchunk = FixAllocChunk;
+	}
+	v = f->chunk;
+	if(f->first)
+		f->first(f->arg, v);
+	f->chunk += f->size;
+	f->nchunk -= f->size;
+	return v;
+}
+
+void
+FixAlloc_Free(FixAlloc *f, void *p)
+{
+	*(void**)p = f->list;
+	f->list = p;
+}
+
-- 
cgit v1.3