ram.c: Move core compression code into its own file

No functional changes intended.

Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/migration/ram-compress.h b/migration/ram-compress.h
new file mode 100644
index 0000000000..06570a799c
--- /dev/null
+++ b/migration/ram-compress.h
@@ -0,0 +1,65 @@
+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ * Copyright (c) 2011-2015 Red Hat Inc
+ *
+ * Authors:
+ *  Juan Quintela <quintela@redhat.com>
+ *
+ * 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
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 QEMU_MIGRATION_COMPRESS_H
+#define QEMU_MIGRATION_COMPRESS_H
+
+#include "qemu-file.h"
+
+enum CompressResult {
+    RES_NONE = 0,
+    RES_ZEROPAGE = 1,
+    RES_COMPRESS = 2
+};
+typedef enum CompressResult CompressResult;
+
+struct CompressParam {
+    bool done;
+    bool quit;
+    bool trigger;
+    CompressResult result;
+    QEMUFile *file;
+    QemuMutex mutex;
+    QemuCond cond;
+    RAMBlock *block;
+    ram_addr_t offset;
+
+    /* internally used fields */
+    z_stream stream;
+    uint8_t *originbuf;
+};
+typedef struct CompressParam CompressParam;
+
+void compress_threads_save_cleanup(void);
+int compress_threads_save_setup(void);
+
+void flush_compressed_data(int (send_queued_data(CompressParam *)));
+int compress_page_with_multi_thread(RAMBlock *block, ram_addr_t offset,
+                                int (send_queued_data(CompressParam *)));
+
+#endif