diff options
Diffstat (limited to 'csum-file.c')
| -rw-r--r-- | csum-file.c | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/csum-file.c b/csum-file.c index cfc1ac42b9..2ddb12a0b7 100644 --- a/csum-file.c +++ b/csum-file.c @@ -11,10 +11,8 @@ #include "progress.h" #include "csum-file.h" -static void flush(struct sha1file *f, unsigned int count) +static void flush(struct sha1file *f, void * buf, unsigned int count) { - void *buf = f->buffer; - for (;;) { int ret = xwrite(f->fd, buf, count); if (ret > 0) { @@ -37,8 +35,8 @@ void sha1flush(struct sha1file *f) unsigned offset = f->offset; if (offset) { - SHA1_Update(&f->ctx, f->buffer, offset); - flush(f, offset); + git_SHA1_Update(&f->ctx, f->buffer, offset); + flush(f, f->buffer, offset); f->offset = 0; } } @@ -48,12 +46,12 @@ int sha1close(struct sha1file *f, unsigned char *result, unsigned int flags) int fd; sha1flush(f); - SHA1_Final(f->buffer, &f->ctx); + git_SHA1_Final(f->buffer, &f->ctx); if (result) hashcpy(result, f->buffer); if (flags & (CSUM_CLOSE | CSUM_FSYNC)) { /* write checksum and close fd */ - flush(f, 20); + flush(f, f->buffer, 20); if (flags & CSUM_FSYNC) fsync_or_die(f->fd, f->name); if (close(f->fd)) @@ -68,21 +66,30 @@ int sha1close(struct sha1file *f, unsigned char *result, unsigned int flags) int sha1write(struct sha1file *f, void *buf, unsigned int count) { - if (f->do_crc) - f->crc32 = crc32(f->crc32, buf, count); while (count) { unsigned offset = f->offset; unsigned left = sizeof(f->buffer) - offset; unsigned nr = count > left ? left : count; + void *data; + + if (f->do_crc) + f->crc32 = crc32(f->crc32, buf, nr); + + if (nr == sizeof(f->buffer)) { + /* process full buffer directly without copy */ + data = buf; + } else { + memcpy(f->buffer + offset, buf, nr); + data = f->buffer; + } - memcpy(f->buffer + offset, buf, nr); count -= nr; offset += nr; buf = (char *) buf + nr; left -= nr; if (!left) { - SHA1_Update(&f->ctx, f->buffer, offset); - flush(f, offset); + git_SHA1_Update(&f->ctx, data, offset); + flush(f, data, offset); offset = 0; } f->offset = offset; @@ -104,7 +111,7 @@ struct sha1file *sha1fd_throughput(int fd, const char *name, struct progress *tp f->tp = tp; f->name = name; f->do_crc = 0; - SHA1_Init(&f->ctx); + git_SHA1_Init(&f->ctx); return f; } |