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migration: Create multifd migration threads

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Creation of the threads, nothing inside yet.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

--

Use pointers instead of long array names
Move to use semaphores instead of conditions as paolo suggestion

Put all the state inside one struct.
Use a counter for the number of threads created.  Needed during cancellation.

Add error return to thread creation

Add id field

Rename functions to multifd_save/load_setup/cleanup
Change recv parameters to a pointer to struct
Change back to a struct
Use Error * for _cleanup
This commit is contained in:
Juan Quintela 2016-01-14 16:52:55 +01:00
parent 0fb86605ea
commit f986c3d256
3 changed files with 233 additions and 0 deletions
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5
migration/ram.h
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@ -39,6 +39,11 @@ int64_t xbzrle_cache_resize(int64_t new_size);
uint64_t ram_bytes_remaining(void);
uint64_t ram_bytes_total(void);
int multifd_save_setup(void);
int multifd_save_cleanup(Error **errp);
int multifd_load_setup(void);
int multifd_load_cleanup(Error **errp);
uint64_t ram_pagesize_summary(void);
int ram_save_queue_pages(const char *rbname, ram_addr_t start, ram_addr_t len);
void acct_update_position(QEMUFile *f, size_t size, bool zero);