From b93a60daf965a507905fbf9553d35a204fbd05a1 Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Wed, 28 Nov 2001 15:46:25 +0000 Subject: the perform "state machine" is more explained now --- lib/multi.c | 41 +++++++++++++++++++++++++++++++++++++---- 1 file changed, 37 insertions(+), 4 deletions(-) diff --git a/lib/multi.c b/lib/multi.c index 1cd98e1a7..983785013 100644 --- a/lib/multi.c +++ b/lib/multi.c @@ -42,7 +42,8 @@ struct Curl_one_easy { struct Curl_one_easy *prev; CURL *easy_handle; /* this is the easy handle for this unit */ - CURLMstate state; /* the handle's state */ + CURLMstate state; /* the handle's state */ + CURLcode result; /* previous result */ }; @@ -193,7 +194,7 @@ CURLMcode curl_multi_fdset(CURLM *multi_handle, /* after the transfer is done, go DONE */ break; } - + easy = easy->next; /* check next handle */ } return CURLM_OK; @@ -209,30 +210,62 @@ CURLMcode curl_multi_perform(CURLM *multi_handle, int *running_handles) easy=multi->first.next; while(easy) { + switch(easy->state) { case CURLM_STATE_INIT: + /* init this transfer */ + easy->result = Curl_init(easy->easy_handle); /* after init, go CONNECT */ + if(CURLE_OK == easy->result) + easy->state = CURLM_STATE_CONNECT; break; case CURLM_STATE_CONNECT: + /* connect */ + easy->result = Curl_connect(easy->easy_handle); /* after connect, go DO */ + if(CURLE_OK == easy->result) + easy->state = CURLM_STATE_DO; break; case CURLM_STATE_DO: + /* Do the fetch or put request */ + easy->result = Curl_do(easy->easy_handle); /* after do, go PERFORM */ + if(CURLE_OK == easy->result) + easy->state = CURLM_STATE_PERFORM; break; case CURLM_STATE_PERFORM: /* read/write data if it is ready to do so */ + easy->result = Curl_readwrite(easy->easy_handle, &done); /* after the transfer is done, go DONE */ + if(TRUE == done) + easy->state = CURLM_STATE_DONE; break; case CURLM_STATE_DONE: + /* post-transfer command */ + easy->result = Curl_done(easy->easy_handle); /* after we have DONE what we're supposed to do, go COMPLETED */ + if(CURLE_OK == easy->result) + easy->state = CURLM_STATE_COMPLETED; break; case CURLM_STATE_COMPLETED: - /* this is a completed transfer */ + /* this is a completed transfer, it is likely to still be connected */ + + /* This node should be delinked from the list now and we should post + an information message that we are complete. */ break; } + if((CURLM_STATE_COMPLETED != easy->state) && + (CURLE_OK != easy->result)) { + /* + * If an error was returned, and we aren't in completed now, + * then we go to completed and consider this transfer aborted. + */ + easy->state = CURLM_STATE_COMPLETED; + } + easy = easy->next; /* operate on next handle */ } - + return CURLM_OK; } CURLMcode curl_multi_cleanup(CURLM *multi_handle); -- cgit v1.2.3