On Wed, May 01, 2019 at 05:56:35PM +0900, Mike Hommey wrote: > The fread/fwrite-like functions in http.c, namely fread_buffer, > fwrite_buffer, fwrite_null, fwrite_sha1_file all return the > multiplication of the size and number of items they are being given. > > Practically speaking, it doesn't matter, because in all contexts where > those functions are used, size is 1. > > But those functions being similar to fread and fwrite (the curl API is > designed around being able to use fread and fwrite directly), it might > be preferable to make them behave like fread and fwrite, which, from > the fread/fwrite manual page, is: > On success, fread() and fwrite() return the number of items read > or written. This number equals the number of bytes transferred > only when size is 1. If an error occurs, or the end of the file > is reached, the return value is a short item count (or zero). This patch breaks the test 'push to remote repository with packed refs' in 't5540-http-push-webdav.sh': https://travis-ci.org/git/git/jobs/529223857#L2603 That test makes Apache spin like crazy at 100% CPU usage for about 30secs, after which, according to 'error.log': [Tue May 07 14:50:55.555166 2019] [mpm_prefork:notice] [pid 12638] AH00169: caught SIGTERM, shutting down > Signed-off-by: Mike Hommey <mh@xxxxxxxxxxxx> > --- > http.c | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) > > diff --git a/http.c b/http.c > index 98fb06df0b..8dbc91f607 100644 > --- a/http.c > +++ b/http.c > @@ -176,7 +176,7 @@ size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_) > memcpy(ptr, buffer->buf.buf + buffer->posn, size); > buffer->posn += size; > > - return size; > + return nmemb; > } > > #ifndef NO_CURL_IOCTL > @@ -204,12 +204,12 @@ size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_) > struct strbuf *buffer = buffer_; > > strbuf_add(buffer, ptr, size); > - return size; > + return nmemb; > } > > size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf) > { > - return eltsize * nmemb; > + return nmemb; > } > > static void closedown_active_slot(struct active_request_slot *slot) > @@ -2319,14 +2319,14 @@ static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb, > BUG("curl_easy_getinfo for HTTP code failed: %s", > curl_easy_strerror(c)); > if (slot->http_code >= 300) > - return size; > + return nmemb; > } > > do { > ssize_t retval = xwrite(freq->localfile, > (char *) ptr + posn, size - posn); > if (retval < 0) > - return posn; > + return posn / eltsize; > posn += retval; > } while (posn < size); > > @@ -2339,7 +2339,7 @@ static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb, > the_hash_algo->update_fn(&freq->c, expn, > sizeof(expn) - freq->stream.avail_out); > } while (freq->stream.avail_in && freq->zret == Z_OK); > - return size; > + return nmemb; > } > > struct http_object_request *new_http_object_request(const char *base_url, > -- > 2.21.0 >
