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io: keep static pointer to copying buffer 

so we avoid some malloc/free calls.
cute-signatures
Timo Teras 2009-07-30 09:11:14 +03:00
parent 8e4075e6b1
commit 60c668f1dc
1 changed files with 6 additions and 6 deletions
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12
src/io.c
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@ -112,6 +112,7 @@ size_t apk_istream_skip(struct apk_istream *is, size_t size)
size_t apk_istream_splice(void *stream, int fd, size_t size,
apk_progress_cb cb, void *cb_ctx)
{
static void *splice_buffer = NULL;
struct apk_istream *is = (struct apk_istream *) stream;
unsigned char *buf = MAP_FAILED;
size_t bufsz, done = 0, r, togo, mmapped = 0;
@ -128,12 +129,13 @@ size_t apk_istream_splice(void *stream, int fd, size_t size,
}
}
if (!mmapped) {
if (bufsz > 256*1024)
bufsz = 256*1024;
buf = malloc(bufsz);
if (splice_buffer == NULL)
splice_buffer = malloc(256*1024);
buf = splice_buffer;
if (buf == NULL)
return -ENOMEM;
if (bufsz > 256*1024)
bufsz = 256*1024;
}
while (done < size) {
@ -163,8 +165,6 @@ size_t apk_istream_splice(void *stream, int fd, size_t size,
err:
if (mmapped)
munmap(buf, size);
else
free(buf);
return r;
}