To be able to run multiple download in parallel efficiently we need to use curl_multi interface [1]. It introduces a set of APIs over new type of handler 'CURLM'.
Create CURLM object at the application start and set it to global ALPM context. The 'single-download' CURL handle moves to payload struct. A new CURL handle is created for each payload with intention to be processed by CURLM. Note that curl_download_internal() is not ported to CURLM interface due to the fact that the function will go away soon. [1] https://curl.haxx.se/libcurl/c/libcurl-multi.html --- lib/libalpm/alpm.c | 12 +++++++++--- lib/libalpm/dload.c | 17 ++++++----------- lib/libalpm/dload.h | 1 + lib/libalpm/handle.c | 5 ----- lib/libalpm/handle.h | 2 +- 5 files changed, 17 insertions(+), 20 deletions(-) diff --git a/lib/libalpm/alpm.c b/lib/libalpm/alpm.c index d1265214..34c5b4b2 100644 --- a/lib/libalpm/alpm.c +++ b/lib/libalpm/alpm.c @@ -70,6 +70,11 @@ alpm_handle_t SYMEXPORT *alpm_initialize(const char *root, const char *dbpath, goto cleanup; } +#ifdef HAVE_LIBCURL + curl_global_init(CURL_GLOBAL_ALL); + myhandle->curlm = curl_multi_init(); +#endif + #ifdef ENABLE_NLS bindtextdomain("libalpm", LOCALEDIR); #endif @@ -104,13 +109,14 @@ int SYMEXPORT alpm_release(alpm_handle_t *myhandle) ret = -1; } - _alpm_handle_unlock(myhandle); - _alpm_handle_free(myhandle); - #ifdef HAVE_LIBCURL + curl_multi_cleanup(myhandle->curlm); curl_global_cleanup(); #endif + _alpm_handle_unlock(myhandle); + _alpm_handle_free(myhandle); + return ret; } diff --git a/lib/libalpm/dload.c b/lib/libalpm/dload.c index bec3ff5e..1f28c7c2 100644 --- a/lib/libalpm/dload.c +++ b/lib/libalpm/dload.c @@ -72,15 +72,6 @@ static char *get_fullpath(const char *path, const char *filename, return filepath; } -static CURL *get_libcurl_handle(alpm_handle_t *handle) -{ - if(!handle->curl) { - curl_global_init(CURL_GLOBAL_SSL); - handle->curl = curl_easy_init(); - } - return handle->curl; -} - enum { ABORT_SIGINT = 1, ABORT_OVER_MAXFILESIZE @@ -241,7 +232,7 @@ static size_t dload_parseheader_cb(void *ptr, size_t size, size_t nmemb, void *u } } - curl_easy_getinfo(payload->handle->curl, CURLINFO_RESPONSE_CODE, &respcode); + curl_easy_getinfo(payload->curl, CURLINFO_RESPONSE_CODE, &respcode); if(payload->respcode != respcode) { payload->respcode = respcode; } @@ -377,8 +368,9 @@ static int curl_download_internal(struct dload_payload *payload, struct sigaction orig_sig_pipe, orig_sig_int; /* shortcut to our handle within the payload */ alpm_handle_t *handle = payload->handle; - CURL *curl = get_libcurl_handle(handle); + CURL *curl = curl_easy_init(); handle->pm_errno = ALPM_ERR_OK; + payload->curl = curl; /* make sure these are NULL */ FREE(payload->tempfile_name); @@ -594,6 +586,9 @@ cleanup: unlink(payload->tempfile_name); } + curl_easy_cleanup(curl); + payload->curl = NULL; + /* restore the old signal handlers */ unmask_signal(SIGINT, &orig_sig_int); unmask_signal(SIGPIPE, &orig_sig_pipe); diff --git a/lib/libalpm/dload.h b/lib/libalpm/dload.h index 3eb7fbe1..65fcdadb 100644 --- a/lib/libalpm/dload.h +++ b/lib/libalpm/dload.h @@ -44,6 +44,7 @@ struct dload_payload { int trust_remote_name; int cb_initialized; #ifdef HAVE_LIBCURL + CURL *curl; CURLcode curlerr; /* last error produced by curl */ #endif }; diff --git a/lib/libalpm/handle.c b/lib/libalpm/handle.c index 8ae08d11..0d4797bf 100644 --- a/lib/libalpm/handle.c +++ b/lib/libalpm/handle.c @@ -64,11 +64,6 @@ void _alpm_handle_free(alpm_handle_t *handle) closelog(); } -#ifdef HAVE_LIBCURL - /* release curl handle */ - curl_easy_cleanup(handle->curl); -#endif - #ifdef HAVE_LIBGPGME FREELIST(handle->known_keys); #endif diff --git a/lib/libalpm/handle.h b/lib/libalpm/handle.h index cd7104f9..9fef0fbf 100644 --- a/lib/libalpm/handle.h +++ b/lib/libalpm/handle.h @@ -59,7 +59,7 @@ struct __alpm_handle_t { #ifdef HAVE_LIBCURL /* libcurl handle */ - CURL *curl; /* reusable curl_easy handle */ + CURLM *curlm; unsigned short disable_dl_timeout; unsigned int parallel_downloads; /* number of download streams */ #endif -- 2.25.1
