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-rw-r--r--src/mesa/shader/slang/slang_mem.c142
-rw-r--r--src/mesa/shader/slang/slang_mem.h59
2 files changed, 201 insertions, 0 deletions
diff --git a/src/mesa/shader/slang/slang_mem.c b/src/mesa/shader/slang/slang_mem.c
new file mode 100644
index 00000000000..c7be9a7dc1a
--- /dev/null
+++ b/src/mesa/shader/slang/slang_mem.c
@@ -0,0 +1,142 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5.3
+ *
+ * Copyright (C) 2005-2007 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_mem.c
+ *
+ * Memory manager for GLSL compiler. The general idea is to do all
+ * allocations out of a large pool then just free the pool when done
+ * compiling to avoid intricate malloc/free tracking and memory leaks.
+ *
+ * \author Brian Paul
+ */
+
+#include "context.h"
+#include "slang_mem.h"
+
+#define GRANULARITY 8
+#define ROUND_UP(B) ( ((B) + (GRANULARITY - 1)) & ~(GRANULARITY - 1) )
+
+
+slang_mempool *
+_slang_new_mempool(GLuint initialSize)
+{
+ slang_mempool *pool = (slang_mempool *) _mesa_calloc(sizeof(slang_mempool));
+ if (pool) {
+ pool->Data = (char *) _mesa_calloc(initialSize);
+ if (!pool->Data) {
+ _mesa_free(pool);
+ return NULL;
+ }
+ pool->Size = initialSize;
+ pool->Used = 0;
+ }
+ return pool;
+}
+
+
+void
+_slang_delete_mempool(slang_mempool *pool)
+{
+ GLuint total = 0;
+ while (pool) {
+ slang_mempool *next = pool->Next;
+ total += pool->Used;
+ _mesa_free(pool->Data);
+ _mesa_free(pool);
+ pool = next;
+ }
+ printf("TOTAL USED %u\n", total);
+}
+
+
+/**
+ * Alloc 'bytes' from shader mempool.
+ */
+void *
+_slang_alloc(GLuint bytes)
+{
+ slang_mempool *pool;
+ GET_CURRENT_CONTEXT(ctx);
+
+ pool = (slang_mempool *) ctx->Shader.MemPool;
+
+ while (pool) {
+ if (pool->Used + bytes <= pool->Size) {
+ /* found room */
+ void *addr = (void *) (pool->Data + pool->Used);
+ pool->Used += ROUND_UP(bytes);
+ /*printf("alloc %u Used %u\n", bytes, pool->Used);*/
+ return addr;
+ }
+ else if (pool->Next) {
+ /* try next block */
+ pool = pool->Next;
+ }
+ else {
+ /* alloc new pool */
+ assert(bytes <= pool->Size); /* XXX or max2() */
+ pool->Next = _slang_new_mempool(pool->Size);
+ if (!pool->Next) {
+ /* we're _really_ out of memory */
+ return NULL;
+ }
+ else {
+ pool->Used = ROUND_UP(bytes);
+ return (void *) pool->Data;
+ }
+ }
+ }
+ return NULL;
+}
+
+
+void *
+_slang_realloc(void *oldBuffer, GLuint oldSize, GLuint newSize)
+{
+ const GLuint copySize = (oldSize < newSize) ? oldSize : newSize;
+ void *newBuffer = _slang_alloc(newSize);
+ if (newBuffer && oldBuffer && copySize > 0)
+ _mesa_memcpy(newBuffer, oldBuffer, copySize);
+ return newBuffer;
+}
+
+
+/**
+ * Clone string, storing in current mempool.
+ */
+char *
+_slang_strdup(const char *s)
+{
+ if (s) {
+ size_t l = _mesa_strlen(s);
+ char *s2 = (char *) _slang_alloc(l + 1);
+ if (s2)
+ _mesa_strcpy(s2, s);
+ return s2;
+ }
+ else {
+ return NULL;
+ }
+}
diff --git a/src/mesa/shader/slang/slang_mem.h b/src/mesa/shader/slang/slang_mem.h
new file mode 100644
index 00000000000..f44892666bf
--- /dev/null
+++ b/src/mesa/shader/slang/slang_mem.h
@@ -0,0 +1,59 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5.3
+ *
+ * Copyright (C) 2005-2007 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef SLANG_MEM_H
+#define SLANG_MEM_H
+
+
+#include "imports.h"
+
+
+typedef struct slang_mempool_
+{
+ GLuint Size, Used;
+ char *Data;
+ struct slang_mempool_ *Next;
+} slang_mempool;
+
+
+extern slang_mempool *
+_slang_new_mempool(GLuint initialSize);
+
+extern void
+_slang_delete_mempool(slang_mempool *pool);
+
+extern void *
+_slang_alloc(GLuint bytes);
+
+extern void *
+_slang_realloc(void *oldBuffer, GLuint oldSize, GLuint newSize);
+
+extern char *
+_slang_strdup(const char *s);
+
+
+#define USE_MEMPOOL 1 /* XXX temporary */
+
+#endif