Applying my updated version of Craig Barratt's buffered I/O patch.

[rsync/rsync.git] / fileio.c

diff --git a/fileio.c b/fileio.c
index 32480f7..bc24428 100644 (file)
--- a/fileio.c
+++ b/fileio.c
@@ -69,6 +69,21 @@ static int write_sparse(int f,char *buf,size_t len)
        return len;
 }
 
+
+static char *wf_writeBuf;
+static size_t wf_writeBufSize;
+static size_t wf_writeBufCnt;
+
+int flush_write_file(int f)
+{
+       int ret = write(f, wf_writeBuf, wf_writeBufCnt);
+       if (ret < 0)
+               return ret;
+       /* if (ret < wf_writeBufCnt) ??? */
+       wf_writeBufCnt = 0;
+       return ret;
+}
+
 /*
  * write_file does not allow incomplete writes.  It loops internally
  * until len bytes are written or errno is set.
@@ -83,7 +98,22 @@ int write_file(int f,char *buf,size_t len)
                        int len1 = MIN(len, SPARSE_WRITE_SIZE);
                        r1 = write_sparse(f, buf, len1);
                } else {
-                       r1 = write(f, buf, len);
+                       if (!wf_writeBuf) {
+                               wf_writeBufSize = MAX_MAP_SIZE;
+                               wf_writeBufCnt  = 0;
+                               wf_writeBuf = new_array(char, MAX_MAP_SIZE);
+                               if (!wf_writeBuf) out_of_memory("write_file");
+                       }
+                       r1 = MIN(len, wf_writeBufSize - wf_writeBufCnt);
+                       if (r1) {
+                               memcpy(wf_writeBuf + wf_writeBufCnt, buf, r1);
+                               wf_writeBufCnt += r1;
+                       }
+                       if (wf_writeBufCnt == wf_writeBufSize) {
+                               if (flush_write_file(f) < 0) return -1;
+                               if (!r1 && len)
+                                       continue;
+                       }
                }
                if (r1 <= 0) {
                        if (ret > 0) return ret;