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b5ca3368 LS |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * Copyright (c) 2011-2015 Red Hat Inc | |
6 | * | |
7 | * Authors: | |
8 | * Juan Quintela <quintela@redhat.com> | |
9 | * | |
10 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
11 | * of this software and associated documentation files (the "Software"), to deal | |
12 | * in the Software without restriction, including without limitation the rights | |
13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
14 | * copies of the Software, and to permit persons to whom the Software is | |
15 | * furnished to do so, subject to the following conditions: | |
16 | * | |
17 | * The above copyright notice and this permission notice shall be included in | |
18 | * all copies or substantial portions of the Software. | |
19 | * | |
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
23 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
26 | * THE SOFTWARE. | |
27 | */ | |
28 | ||
29 | #ifndef QEMU_MIGRATION_COMPRESS_H | |
30 | #define QEMU_MIGRATION_COMPRESS_H | |
31 | ||
32 | #include "qemu-file.h" | |
6f609005 | 33 | #include "qapi/qapi-types-migration.h" |
b5ca3368 LS |
34 | |
35 | enum CompressResult { | |
36 | RES_NONE = 0, | |
37 | RES_ZEROPAGE = 1, | |
38 | RES_COMPRESS = 2 | |
39 | }; | |
40 | typedef enum CompressResult CompressResult; | |
41 | ||
42 | struct CompressParam { | |
43 | bool done; | |
44 | bool quit; | |
45 | bool trigger; | |
46 | CompressResult result; | |
47 | QEMUFile *file; | |
48 | QemuMutex mutex; | |
49 | QemuCond cond; | |
50 | RAMBlock *block; | |
51 | ram_addr_t offset; | |
52 | ||
53 | /* internally used fields */ | |
54 | z_stream stream; | |
55 | uint8_t *originbuf; | |
56 | }; | |
57 | typedef struct CompressParam CompressParam; | |
58 | ||
59 | void compress_threads_save_cleanup(void); | |
60 | int compress_threads_save_setup(void); | |
61 | ||
83df387d JQ |
62 | bool compress_page_with_multi_thread(RAMBlock *block, ram_addr_t offset, |
63 | int (send_queued_data(CompressParam *))); | |
b5ca3368 | 64 | |
b1f17720 LS |
65 | int wait_for_decompress_done(void); |
66 | void compress_threads_load_cleanup(void); | |
67 | int compress_threads_load_setup(QEMUFile *f); | |
68 | void decompress_data_with_multi_threads(QEMUFile *f, void *host, int len); | |
69 | ||
6f609005 | 70 | void populate_compress(MigrationInfo *info); |
8258f2fa | 71 | uint64_t compress_ram_pages(void); |
1fd03d41 | 72 | void update_compress_thread_counts(const CompressParam *param, int bytes_xmit); |
fb36fb27 | 73 | void compress_update_rates(uint64_t page_count); |
742ec5f3 | 74 | int compress_send_queued_data(CompressParam *param); |
8020bc9a | 75 | void compress_flush_data(void); |
6f609005 | 76 | |
b5ca3368 | 77 | #endif |