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| author |   Florian Weimer <fweimer@redhat.com> | 2017-06-30 21:10:23 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2017-07-03 20:52:59 +0200 |
| commit | 352f4ff9a268b81ef5d4b2413f582565806e4790 (patch) | |
| tree | fb27056dfdeafe43c021f6127c9544c016e78019 /resolv/res-close.c | |
| parent | resolv: Add preinit tests to resolv/tst-resolv-res_init-skeleton.c (diff) | |
| download | glibc-352f4ff9a268b81ef5d4b2413f582565806e4790.tar.gz glibc-352f4ff9a268b81ef5d4b2413f582565806e4790.tar.bz2 glibc-352f4ff9a268b81ef5d4b2413f582565806e4790.zip | |
resolv: Introduce struct resolv_context [BZ #21668]
struct resolv_context objects provide a temporary resolver context
which does not change during a name lookup operation. Only when the
outmost context is created, the stub resolver configuration is
verified to be current (at present, only against previous res_init
calls). Subsequent attempts to obtain the context will reuse the
result of the initial verification operation.
struct resolv_context can also be extended in the future to store
data which needs to be deallocated during thread cancellation.
Diffstat (limited to 'resolv/res-close.c')
| -rw-r--r-- | resolv/res-close.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/resolv/res-close.c b/resolv/res-close.c index 73f18d1525..97da73c99c 100644 --- a/resolv/res-close.c +++ b/resolv/res-close.c @@ -83,6 +83,7 @@ */ #include <resolv-internal.h> +#include <resolv_context.h> #include <not-cancel.h> /* Close all open sockets. If FREE_ADDR is true, deallocate any @@ -124,6 +125,8 @@ libc_hidden_def (__res_nclose) static void __attribute__ ((section ("__libc_thread_freeres_fn"))) res_thread_freeres (void) { + __resolv_context_freeres (); + if (_res.nscount == 0) /* Never called res_ninit. */ return; |