[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH v3 6/9] More optimized qemu_put_be64/32/16
From: |
Orit Wasserman |
Subject: |
[Qemu-devel] [PATCH v3 6/9] More optimized qemu_put_be64/32/16 |
Date: |
Thu, 21 Mar 2013 18:05:37 +0200 |
qemu_put_be functions used qemu_put_byte this caused lots of 1 bytes buffers
in the iovec.
we move to use cpu_put_be64/32/16wu and put a single buffer per call.
Signed-off-by: Orit Wasserman <address@hidden>
---
savevm.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/savevm.c b/savevm.c
index f69dce3..83aa9e7 100644
--- a/savevm.c
+++ b/savevm.c
@@ -795,22 +795,26 @@ void qemu_file_reset_rate_limit(QEMUFile *f)
void qemu_put_be16(QEMUFile *f, unsigned int v)
{
- qemu_put_byte(f, v >> 8);
- qemu_put_byte(f, v);
+ uint16_t p;
+ cpu_to_be16wu(&p, v);
+
+ qemu_put_buffer(f, (uint8_t *)&p, sizeof(p));
}
void qemu_put_be32(QEMUFile *f, unsigned int v)
{
- qemu_put_byte(f, v >> 24);
- qemu_put_byte(f, v >> 16);
- qemu_put_byte(f, v >> 8);
- qemu_put_byte(f, v);
+ uint32_t p;
+ cpu_to_be32wu(&p, v);
+
+ qemu_put_buffer(f, (uint8_t *)&p, sizeof(p));
}
void qemu_put_be64(QEMUFile *f, uint64_t v)
{
- qemu_put_be32(f, v >> 32);
- qemu_put_be32(f, v);
+ uint64_t p;
+ cpu_to_be64wu(&p, v);
+
+ qemu_put_buffer(f, (uint8_t *)&p, sizeof(p));
}
unsigned int qemu_get_be16(QEMUFile *f)
--
1.7.11.7
- [Qemu-devel] [PATCH v3 1/9] Add QemuFileWritevBuffer QemuFileOps, (continued)
- [Qemu-devel] [PATCH v3 1/9] Add QemuFileWritevBuffer QemuFileOps, Orit Wasserman, 2013/03/21
- [Qemu-devel] [PATCH v3 3/9] Update bytes_xfer in qemu_put_byte, Orit Wasserman, 2013/03/21
- [Qemu-devel] [PATCH v3 4/9] Store the data to send also in iovec, Orit Wasserman, 2013/03/21
- [Qemu-devel] [PATCH v3 5/9] Use writev ops if available, Orit Wasserman, 2013/03/21
- [Qemu-devel] [PATCH v3 6/9] More optimized qemu_put_be64/32/16,
Orit Wasserman <=
- [Qemu-devel] [PATCH v3 7/9] Add qemu_put_buffer_no_copy, Orit Wasserman, 2013/03/21
- [Qemu-devel] [PATCH v3 9/9] coalesce adjacent iovecs, Orit Wasserman, 2013/03/21