auxiliary: util_stream -> os_stream

3 files changed, 388 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/os/os_stream.h b/src/gallium/auxiliary/os/os_stream.h
new file mode 100644
index 0000000000..bf30e6542d
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_stream.h
@@ -0,0 +1,61 @@
+/**************************************************************************
+ *
+ * Copyright 2008-2010 VMware, Inc.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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
+ * Cross-platform sequential access stream abstraction.
+ */
+
+#ifndef _OS_STREAM_H_
+#define _OS_STREAM_H_
+
+
+#include "pipe/p_compiler.h"
+
+
+struct os_stream;
+
+
+/**
+ * Create a stream
+ * @param filename relative or absolute path (necessary for windows)  
+ * @param optional maximum file size (0 for a growable size).
+ */
+struct os_stream *
+os_stream_create(const char *filename, size_t max_size);
+
+boolean
+os_stream_write(struct os_stream *stream, const void *data, size_t size);
+
+void
+os_stream_flush(struct os_stream *stream);
+
+void
+os_stream_close(struct os_stream *stream);
+
+
+#endif /* _OS_STREAM_H_ */
diff --git a/src/gallium/auxiliary/os/os_stream_stdc.c b/src/gallium/auxiliary/os/os_stream_stdc.c
new file mode 100644
index 0000000000..caa60c0b50
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_stream_stdc.c
@@ -0,0 +1,105 @@
+/**************************************************************************
+ *
+ * Copyright 2008-2010 VMware, Inc.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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
+ * Stream implementation based on the Standard C Library.
+ */
+
+#include "pipe/p_config.h"
+
+#if defined(PIPE_OS_UNIX) || defined(PIPE_SUBSYSTEM_WINDOWS_USER)
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "os_stream.h"
+
+
+struct os_stream 
+{
+   FILE *file;
+};
+
+
+struct os_stream *
+os_stream_create(const char *filename, size_t max_size)
+{
+   struct os_stream *stream;
+   
+   (void)max_size;
+   
+   stream = (struct os_stream *)calloc(1, sizeof(struct os_stream));
+   if(!stream)
+      goto no_stream;
+   
+   stream->file = fopen(filename, "w");
+   if(!stream->file)
+      goto no_file;
+   
+   return stream;
+   
+no_file:
+   free(stream);
+no_stream:
+   return NULL;
+}
+
+
+boolean
+os_stream_write(struct os_stream *stream, const void *data, size_t size)
+{
+   if(!stream)
+      return FALSE;
+   
+   return fwrite(data, size, 1, stream->file) == size ? TRUE : FALSE;
+}
+
+
+void
+os_stream_flush(struct os_stream *stream) 
+{
+   if(!stream)
+      return;
+   
+   fflush(stream->file);
+}
+
+
+void
+os_stream_close(struct os_stream *stream) 
+{
+   if(!stream)
+      return;
+   
+   fclose(stream->file);
+
+   free(stream);
+}
+
+
+#endif
diff --git a/src/gallium/auxiliary/os/os_stream_wd.c b/src/gallium/auxiliary/os/os_stream_wd.c
new file mode 100644
index 0000000000..a64cbcab4c
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_stream_wd.c
@@ -0,0 +1,222 @@
+/**************************************************************************
+ *
+ * Copyright 2008-2010 VMware, Inc.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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
+ * Stream implementation for the Windows Display driver.
+ */
+
+#include "pipe/p_config.h"
+
+#if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
+
+#include <windows.h>
+#include <winddi.h>
+
+#include "os_memory.h"
+#include "os_stream.h"
+
+
+#define MAP_FILE_SIZE (4*1024*1024)
+
+
+struct os_stream 
+{
+   char filename[MAX_PATH + 1];
+   WCHAR wFileName[MAX_PATH + 1];
+   boolean growable;
+   size_t map_size;
+   ULONG_PTR iFile;
+   char *pMap;
+   size_t written;
+   unsigned suffix;
+};
+
+
+static INLINE boolean
+os_stream_map(struct os_stream *stream)
+{
+   ULONG BytesInUnicodeString;
+   static char filename[MAX_PATH + 1];
+   unsigned filename_len;
+
+   if(stream->growable)
+      filename_len = snprintf(filename,
+                              sizeof(filename),
+                              "%s.%04x",
+                              stream->filename,
+                              stream->suffix++);
+   else
+      filename_len = snprintf(filename,
+                              sizeof(filename),
+                              "%s",
+                              stream->filename);
+
+   EngMultiByteToUnicodeN(
+         stream->wFileName,
+         sizeof(stream->wFileName),
+         &BytesInUnicodeString,
+         filename,
+         filename_len);
+   
+   stream->pMap = EngMapFile(stream->wFileName, stream->map_size, &stream->iFile);
+   if(!stream->pMap)
+      return FALSE;
+   
+   memset(stream->pMap, 0, stream->map_size);
+   stream->written = 0;
+   
+   return TRUE;
+}
+
+
+static INLINE void
+os_stream_unmap(struct os_stream *stream)
+{
+   EngUnmapFile(stream->iFile);
+   if(stream->written < stream->map_size) {
+      /* Truncate file size */
+      stream->pMap = EngMapFile(stream->wFileName, stream->written, &stream->iFile);
+      if(stream->pMap)
+         EngUnmapFile(stream->iFile);
+   }
+   
+   stream->pMap = NULL;
+}
+
+
+static INLINE void
+os_stream_full_qualified_filename(char *dst, size_t size, const char *src)
+{
+   boolean need_drive, need_root;
+   
+   if((('A' <= src[0] && src[0] <= 'Z') || ('a' <= src[0] && src[0] <= 'z')) && src[1] == ':') {
+      need_drive = FALSE;
+      need_root = src[2] == '\\' ? FALSE : TRUE;
+   }
+   else {
+      need_drive = TRUE;
+      need_root = src[0] == '\\' ? FALSE : TRUE;
+   }
+   
+   snprintf(dst, size,
+            "\\??\\%s%s%s",
+            need_drive ? "C:" : "",
+            need_root ? "\\" : "",
+            src);
+}
+
+
+struct os_stream *
+os_stream_create(const char *filename, size_t max_size)
+{
+   struct os_stream *stream;
+   
+   stream = CALLOC_STRUCT(os_stream);
+   if(!stream)
+      goto error1;
+   
+   os_stream_full_qualified_filename(stream->filename,
+                                       sizeof(stream->filename),
+                                       filename);
+   
+   if(max_size) {
+      stream->growable = FALSE;
+      stream->map_size = max_size;
+   }
+   else {
+      stream->growable = TRUE;
+      stream->map_size = MAP_FILE_SIZE;
+   }
+   
+   if(!os_stream_map(stream))
+      goto error2;
+   
+   return stream;
+   
+error2:
+   FREE(stream);
+error1:
+   return NULL;
+}
+
+
+static INLINE void
+os_stream_copy(struct os_stream *stream, const char *data, size_t size)
+{
+   assert(stream->written + size <= stream->map_size);
+   memcpy(stream->pMap + stream->written, data, size);
+   stream->written += size;
+}
+
+
+boolean
+os_stream_write(struct os_stream *stream, const void *data, size_t size)
+{
+   if(!stream)
+      return FALSE;
+   
+   if(!stream->pMap)
+      return FALSE;
+   
+   while(stream->written + size > stream->map_size) {
+      size_t step = stream->map_size - stream->written;
+      os_stream_copy(stream, data, step);
+      data = (const char *)data + step;
+      size -= step;
+      
+      os_stream_unmap(stream);
+      if(!stream->growable || !os_stream_map(stream))
+         return FALSE;
+   }
+
+   os_stream_copy(stream, data, size);
+   
+   return TRUE;
+}
+
+
+void
+os_stream_flush(struct os_stream *stream) 
+{
+   (void)stream;
+}
+
+
+void
+os_stream_close(struct os_stream *stream) 
+{
+   if(!stream)
+      return;
+   
+   os_stream_unmap(stream);
+
+   FREE(stream);
+}
+
+
+#endif