diff options
Diffstat (limited to 'lib/asyn.h')
| -rw-r--r-- | lib/asyn.h | 39 |
1 files changed, 27 insertions, 12 deletions
diff --git a/lib/asyn.h b/lib/asyn.h index 3adc3664a..081c3fef0 100644 --- a/lib/asyn.h +++ b/lib/asyn.h @@ -7,7 +7,7 @@ * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * - * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al. + * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms @@ -60,7 +60,7 @@ void Curl_resolver_global_cleanup(void); * Returning anything else than CURLE_OK fails curl_easy_init() with the * correspondent code. */ -CURLcode Curl_resolver_init(void **resolver); +CURLcode Curl_resolver_init(struct Curl_easy *easy, void **resolver); /* * Curl_resolver_cleanup() @@ -79,17 +79,33 @@ void Curl_resolver_cleanup(void *resolver); * pointer. Returning anything else than CURLE_OK causes failed * curl_easy_duphandle() call. */ -int Curl_resolver_duphandle(void **to, void *from); +CURLcode Curl_resolver_duphandle(struct Curl_easy *easy, void **to, + void *from); /* * Curl_resolver_cancel(). * * It is called from inside other functions to cancel currently performing * resolver request. Should also free any temporary resources allocated to - * perform a request. + * perform a request. This never waits for resolver threads to complete. + * + * It is safe to call this when conn is in any state. */ void Curl_resolver_cancel(struct connectdata *conn); +/* + * Curl_resolver_kill(). + * + * This acts like Curl_resolver_cancel() except it will block until any threads + * associated with the resolver are complete. This never blocks for resolvers + * that do not use threads. This is intended to be the "last chance" function + * that cleans up an in-progress resolver completely (before its owner is about + * to die). + * + * It is safe to call this when conn is in any state. + */ +void Curl_resolver_kill(struct connectdata *conn); + /* Curl_resolver_getsock() * * This function is called from the multi_getsock() function. 'sock' is a @@ -98,8 +114,7 @@ void Curl_resolver_cancel(struct connectdata *conn); * return bitmask indicating what file descriptors (referring to array indexes * in the 'sock' array) to wait for, read/write. */ -int Curl_resolver_getsock(struct connectdata *conn, curl_socket_t *sock, - int numsocks); +int Curl_resolver_getsock(struct connectdata *conn, curl_socket_t *sock); /* * Curl_resolver_is_resolved() @@ -116,14 +131,13 @@ CURLcode Curl_resolver_is_resolved(struct connectdata *conn, /* * Curl_resolver_wait_resolv() * - * waits for a resolve to finish. This function should be avoided since using + * Waits for a resolve to finish. This function should be avoided since using * this risk getting the multi interface to "hang". * * If 'entry' is non-NULL, make it point to the resolved dns entry * - * Returns CURLE_COULDNT_RESOLVE_HOST if the host was not resolved, and - * CURLE_OPERATION_TIMEDOUT if a time-out occurred. - + * Returns CURLE_COULDNT_RESOLVE_HOST if the host was not resolved, + * CURLE_OPERATION_TIMEDOUT if a time-out occurred, or other errors. */ CURLcode Curl_resolver_wait_resolv(struct connectdata *conn, struct Curl_dns_entry **dnsentry); @@ -147,11 +161,12 @@ Curl_addrinfo *Curl_resolver_getaddrinfo(struct connectdata *conn, #ifndef CURLRES_ASYNCH /* convert these functions if an asynch resolver isn't used */ #define Curl_resolver_cancel(x) Curl_nop_stmt +#define Curl_resolver_kill(x) Curl_nop_stmt #define Curl_resolver_is_resolved(x,y) CURLE_COULDNT_RESOLVE_HOST #define Curl_resolver_wait_resolv(x,y) CURLE_COULDNT_RESOLVE_HOST #define Curl_resolver_getsock(x,y,z) 0 -#define Curl_resolver_duphandle(x,y) CURLE_OK -#define Curl_resolver_init(x) CURLE_OK +#define Curl_resolver_duphandle(x,y,z) CURLE_OK +#define Curl_resolver_init(x,y) CURLE_OK #define Curl_resolver_global_init() CURLE_OK #define Curl_resolver_global_cleanup() Curl_nop_stmt #define Curl_resolver_cleanup(x) Curl_nop_stmt |