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Re: [Qemu-devel] [PATCH v1 15/22] migration: delete QEMUFile buffer impl
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] [PATCH v1 15/22] migration: delete QEMUFile buffer implementation |
Date: |
Wed, 3 Feb 2016 09:54:37 +0000 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
* Daniel P. Berrange (address@hidden) wrote:
> The qemu_bufopen() method is no longer used, so the memory
> buffer based QEMUFile backend can be deleted entirely.
>
> Signed-off-by: Daniel P. Berrange <address@hidden>
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
> ---
> include/migration/qemu-file.h | 6 ---
> migration/qemu-file-buf.c | 96
> -------------------------------------------
> 2 files changed, 102 deletions(-)
>
> diff --git a/include/migration/qemu-file.h b/include/migration/qemu-file.h
> index cb79311..6b12960 100644
> --- a/include/migration/qemu-file.h
> +++ b/include/migration/qemu-file.h
> @@ -141,7 +141,6 @@ QEMUFile *qemu_fopen_socket(int fd, const char *mode);
> QEMUFile *qemu_fopen_channel_input(QIOChannel *ioc);
> QEMUFile *qemu_fopen_channel_output(QIOChannel *ioc);
> QEMUFile *qemu_popen_cmd(const char *command, const char *mode);
> -QEMUFile *qemu_bufopen(const char *mode, QEMUSizedBuffer *input);
> void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks);
> int qemu_get_fd(QEMUFile *f);
> int qemu_fclose(QEMUFile *f);
> @@ -167,11 +166,6 @@ ssize_t qsb_write_at(QEMUSizedBuffer *qsb, const uint8_t
> *buf,
> off_t pos, size_t count);
>
>
> -/*
> - * For use on files opened with qemu_bufopen
> - */
> -const QEMUSizedBuffer *qemu_buf_get(QEMUFile *f);
> -
> static inline void qemu_put_ubyte(QEMUFile *f, unsigned int v)
> {
> qemu_put_byte(f, (int)v);
> diff --git a/migration/qemu-file-buf.c b/migration/qemu-file-buf.c
> index 49516b8..c0bc38c 100644
> --- a/migration/qemu-file-buf.c
> +++ b/migration/qemu-file-buf.c
> @@ -365,99 +365,3 @@ ssize_t qsb_write_at(QEMUSizedBuffer *qsb, const uint8_t
> *source,
>
> return count;
> }
> -
> -typedef struct QEMUBuffer {
> - QEMUSizedBuffer *qsb;
> - QEMUFile *file;
> - bool qsb_allocated;
> -} QEMUBuffer;
> -
> -static ssize_t buf_get_buffer(void *opaque, uint8_t *buf, int64_t pos,
> - size_t size)
> -{
> - QEMUBuffer *s = opaque;
> - ssize_t len = qsb_get_length(s->qsb) - pos;
> -
> - if (len <= 0) {
> - return 0;
> - }
> -
> - if (len > size) {
> - len = size;
> - }
> - return qsb_get_buffer(s->qsb, pos, len, buf);
> -}
> -
> -static ssize_t buf_put_buffer(void *opaque, const uint8_t *buf,
> - int64_t pos, size_t size)
> -{
> - QEMUBuffer *s = opaque;
> -
> - return qsb_write_at(s->qsb, buf, pos, size);
> -}
> -
> -static int buf_close(void *opaque)
> -{
> - QEMUBuffer *s = opaque;
> -
> - if (s->qsb_allocated) {
> - qsb_free(s->qsb);
> - }
> -
> - g_free(s);
> -
> - return 0;
> -}
> -
> -const QEMUSizedBuffer *qemu_buf_get(QEMUFile *f)
> -{
> - QEMUBuffer *p;
> -
> - qemu_fflush(f);
> -
> - p = f->opaque;
> -
> - return p->qsb;
> -}
> -
> -static const QEMUFileOps buf_read_ops = {
> - .get_buffer = buf_get_buffer,
> - .close = buf_close,
> -};
> -
> -static const QEMUFileOps buf_write_ops = {
> - .put_buffer = buf_put_buffer,
> - .close = buf_close,
> -};
> -
> -QEMUFile *qemu_bufopen(const char *mode, QEMUSizedBuffer *input)
> -{
> - QEMUBuffer *s;
> -
> - if (mode == NULL || (mode[0] != 'r' && mode[0] != 'w') ||
> - mode[1] != '\0') {
> - error_report("qemu_bufopen: Argument validity check failed");
> - return NULL;
> - }
> -
> - s = g_new0(QEMUBuffer, 1);
> - s->qsb = input;
> -
> - if (s->qsb == NULL) {
> - s->qsb = qsb_create(NULL, 0);
> - s->qsb_allocated = true;
> - }
> - if (!s->qsb) {
> - g_free(s);
> - error_report("qemu_bufopen: qsb_create failed");
> - return NULL;
> - }
> -
> -
> - if (mode[0] == 'r') {
> - s->file = qemu_fopen_ops(s, &buf_read_ops);
> - } else {
> - s->file = qemu_fopen_ops(s, &buf_write_ops);
> - }
> - return s->file;
> -}
> --
> 2.5.0
>
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK
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