sim: dv-sockser: add a write buffer variant
Rather than having to bang out chunks of data one byte at a time over the socket interface, add a write variant that accepts an arbitrarily long buffer. This speeds things up considerably when we have many chars to send out at once. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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@ -1,3 +1,9 @@
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2010-11-16 Mike Frysinger <vapier@gentoo.org>
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* dv-sockser.c (dv_sockser_write_buffer): New function.
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(dv_sockser_write): Rewrite to use dv_sockser_write_buffer.
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* dv-sockser.h (dv_sockser_write_buffer): New prototype.
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2010-10-07 Hans-Peter Nilsson <hp@axis.com>
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2010-10-07 Hans-Peter Nilsson <hp@axis.com>
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* callback.c (os_lseek): Call wrap on lseek result.
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* callback.c (os_lseek): Call wrap on lseek result.
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@ -346,13 +346,14 @@ dv_sockser_status (SIM_DESC sd)
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}
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}
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int
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int
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dv_sockser_write (SIM_DESC sd, unsigned char c)
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dv_sockser_write_buffer (SIM_DESC sd, const unsigned char *buffer,
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unsigned nr_bytes)
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{
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{
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int n;
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int n;
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if (! connected_p (sd))
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if (! connected_p (sd))
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return -1;
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return -1;
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n = write (sockser_fd, &c, 1);
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n = write (sockser_fd, buffer, nr_bytes);
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if (n == -1)
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if (n == -1)
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{
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{
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if (errno == EPIPE)
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if (errno == EPIPE)
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@ -362,9 +363,15 @@ dv_sockser_write (SIM_DESC sd, unsigned char c)
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}
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}
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return -1;
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return -1;
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}
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}
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if (n != 1)
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if (n != nr_bytes)
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return -1;
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return -1;
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return 1;
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return nr_bytes;
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}
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int
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dv_sockser_write (SIM_DESC sd, unsigned char c)
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{
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return dv_sockser_write_buffer (sd, &c, 1);
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}
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}
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int
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int
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@ -27,6 +27,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* FIXME: later add a device ptr arg */
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/* FIXME: later add a device ptr arg */
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extern int dv_sockser_status (SIM_DESC);
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extern int dv_sockser_status (SIM_DESC);
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int dv_sockser_write (SIM_DESC, unsigned char);
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int dv_sockser_write (SIM_DESC, unsigned char);
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int dv_sockser_write_buffer (SIM_DESC, const unsigned char *, unsigned);
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int dv_sockser_read (SIM_DESC);
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int dv_sockser_read (SIM_DESC);
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#endif /* DV_SOCKSER_H */
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#endif /* DV_SOCKSER_H */
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