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| author | Liang Li <liang.z.li@intel.com> | 2015-07-13 17:34:10 +0800 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2015-07-15 12:21:28 +0200 |
| commit | 9f5f380b54d6ad80cf35d93c8cd71c8d7a1b52b7 (patch) | |
| tree | 83f006700918d86365571f29873403fa3f9c04a0 | |
| parent | 48212d87d6655b029231d830a77983c21552fe49 (diff) | |
| download | qemu-9f5f380b54d6ad80cf35d93c8cd71c8d7a1b52b7.tar.gz | |
migration: reduce the count of strlen call
'strlen' is called three times in 'save_page_header', it's
inefficient.
Signed-off-by: Liang Li <liang.z.li@intel.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
| -rw-r--r-- | migration/ram.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/migration/ram.c b/migration/ram.c index 1e58cd3924..7f007e6432 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -382,16 +382,16 @@ void migrate_compress_threads_create(void) */ static size_t save_page_header(QEMUFile *f, RAMBlock *block, ram_addr_t offset) { - size_t size; + size_t size, len; qemu_put_be64(f, offset); size = 8; if (!(offset & RAM_SAVE_FLAG_CONTINUE)) { - qemu_put_byte(f, strlen(block->idstr)); - qemu_put_buffer(f, (uint8_t *)block->idstr, - strlen(block->idstr)); - size += 1 + strlen(block->idstr); + len = strlen(block->idstr); + qemu_put_byte(f, len); + qemu_put_buffer(f, (uint8_t *)block->idstr, len); + size += 1 + len; } return size; } |