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migration: rename qemu_ftell to qemu_file_total_transferred

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The name 'ftell' gives the misleading impression that the QEMUFile
objects are seekable. This is not the case, as in general we just
have an opaque stream. The users of this method are only interested
in the total bytes processed. This switches to a new name that
reflects the intended usage.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
   dgilbert: Wrapped long line
This commit is contained in:
Daniel P. Berrangé 2022-06-20 12:01:50 +01:00 • committed by Dr. David Alan Gilbert
parent 154d87b4ef
commit fbfa6404e5
6 changed files with 46 additions and 15 deletions
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33
migration/qemu-file.h
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@ -124,8 +124,37 @@ QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops, bool has_ioc);
void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks);
int qemu_get_fd(QEMUFile *f);
int qemu_fclose(QEMUFile *f);
int64_t qemu_ftell(QEMUFile *f);
int64_t qemu_ftell_fast(QEMUFile *f);
/*
* qemu_file_total_transferred:
*
* Report the total number of bytes transferred with
* this file.
*
* For writable files, any pending buffers will be
* flushed, so the reported value will be equal to
* the number of bytes transferred on the wire.
*
* For readable files, the reported value will be
* equal to the number of bytes transferred on the
* wire.
*
* Returns: the total bytes transferred
*/
int64_t qemu_file_total_transferred(QEMUFile *f);
/*
* qemu_file_total_transferred_fast:
*
* As qemu_file_total_transferred except for writable
* files, where no flush is performed and the reported
* amount will include the size of any queued buffers,
* on top of the amount actually transferred.
*
* Returns: the total bytes transferred and queued
*/
int64_t qemu_file_total_transferred_fast(QEMUFile *f);
/*
* put_buffer without copying the buffer.
* The buffer should be available till it is sent asynchronously.