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Applying my updated version of Craig Barratt's buffered I/O patch.
[rsync/rsync.git]
/
io.c
diff --git
a/io.c
b/io.c
index
84a85bb
..
8777bf9
100644
(file)
--- a/
io.c
+++ b/
io.c
@@
-41,8
+41,8
@@
static int io_multiplexing_out;
static int io_multiplexing_in;
static int io_multiplexing_out;
static int io_multiplexing_in;
-static int multiplex_in_fd;
-static int multiplex_out_fd;
+static int multiplex_in_fd
= -1
;
+static int multiplex_out_fd
= -1
;
static time_t last_io;
static int no_flush;
static time_t last_io;
static int no_flush;
@@
-440,17
+440,31
@@
static int read_unbuffered(int fd, char *buf, size_t len)
static size_t remaining;
int tag, ret = 0;
char line[1024];
static size_t remaining;
int tag, ret = 0;
char line[1024];
+ static char *buffer;
+ static size_t bufferIdx = 0;
+ static size_t bufferSz;
- if (
!io_multiplexing_in ||
fd != multiplex_in_fd)
+ if (fd != multiplex_in_fd)
return read_timeout(fd, buf, len);
return read_timeout(fd, buf, len);
+ if (!io_multiplexing_in && remaining == 0) {
+ if (!buffer) {
+ bufferSz = 2 * IO_BUFFER_SIZE;
+ buffer = new_array(char, bufferSz);
+ if (!buffer) out_of_memory("read_unbuffered");
+ }
+ remaining = read_timeout(fd, buffer, bufferSz);
+ bufferIdx = 0;
+ }
+
while (ret == 0) {
if (remaining) {
len = MIN(len, remaining);
while (ret == 0) {
if (remaining) {
len = MIN(len, remaining);
- read_loop(fd, buf, len);
+ memcpy(buf, buffer + bufferIdx, len);
+ bufferIdx += len;
remaining -= len;
ret = len;
remaining -= len;
ret = len;
-
continue
;
+
break
;
}
read_loop(fd, line, 4);
}
read_loop(fd, line, 4);
@@
-459,8
+473,16
@@
static int read_unbuffered(int fd, char *buf, size_t len)
remaining = tag & 0xFFFFFF;
tag = tag >> 24;
remaining = tag & 0xFFFFFF;
tag = tag >> 24;
- if (tag == MPLEX_BASE)
+ if (tag == MPLEX_BASE) {
+ if (!buffer || remaining > bufferSz) {
+ buffer = realloc_array(buffer, char, remaining);
+ if (!buffer) out_of_memory("read_unbuffered");
+ bufferSz = remaining;
+ }
+ read_loop(fd, buffer, remaining);
+ bufferIdx = 0;
continue;
continue;
+ }
tag -= MPLEX_BASE;
tag -= MPLEX_BASE;
@@
-482,6
+504,9
@@
static int read_unbuffered(int fd, char *buf, size_t len)
remaining = 0;
}
remaining = 0;
}
+ if (remaining == 0)
+ io_flush();
+
return ret;
}
return ret;
}
@@
-498,8
+523,6
@@
static void readfd(int fd, char *buffer, size_t N)
size_t total=0;
while (total < N) {
size_t total=0;
while (total < N) {
- io_flush();
-
ret = read_unbuffered(fd, buffer + total, N-total);
total += ret;
}
ret = read_unbuffered(fd, buffer + total, N-total);
total += ret;
}
@@
-682,7
+705,7
@@
static void writefd_unbuffered(int fd,char *buf,size_t len)
static char *io_buffer;
static int io_buffer_count;
static char *io_buffer;
static int io_buffer_count;
-void io_start_buffering(int fd)
+void io_start_buffering
_out
(int fd)
{
if (io_buffer) return;
multiplex_out_fd = fd;
{
if (io_buffer) return;
multiplex_out_fd = fd;
@@
-691,6
+714,11
@@
void io_start_buffering(int fd)
io_buffer_count = 0;
}
io_buffer_count = 0;
}
+void io_start_buffering_in(int fd)
+{
+ multiplex_in_fd = fd;
+}
+
/**
* Write an message to a multiplexed stream. If this fails then rsync
* exits.
/**
* Write an message to a multiplexed stream. If this fails then rsync
* exits.
@@
-881,7
+909,7
@@
void io_start_multiplex_out(int fd)
{
multiplex_out_fd = fd;
io_flush();
{
multiplex_out_fd = fd;
io_flush();
- io_start_buffering(fd);
+ io_start_buffering
_out
(fd);
io_multiplexing_out = 1;
}
io_multiplexing_out = 1;
}