sd-dhcp-client: use asynchronous_close()
close() is a blocking call, which may slow things down measurably when running many dhcp clients in the same single-threaded main loop. Let's just use the asynchronous version instead to avoid the problem.
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@ -30,6 +30,7 @@
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#include "util.h"
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#include "list.h"
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#include "refcnt.h"
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#include "async.h"
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#include "dhcp-protocol.h"
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#include "dhcp-internal.h"
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@ -209,7 +210,7 @@ static int client_initialize(sd_dhcp_client *client) {
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client->receive_message =
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sd_event_source_unref(client->receive_message);
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client->fd = safe_close(client->fd);
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client->fd = asynchronous_close(client->fd);
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client->timeout_resend = sd_event_source_unref(client->timeout_resend);
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@ -747,7 +748,7 @@ static int client_timeout_t2(sd_event_source *s, uint64_t usec, void *userdata)
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int r;
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client->receive_message = sd_event_source_unref(client->receive_message);
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client->fd = safe_close(client->fd);
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client->fd = asynchronous_close(client->fd);
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client->state = DHCP_STATE_REBINDING;
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client->attempt = 1;
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@ -1153,7 +1154,7 @@ static int client_handle_message(sd_dhcp_client *client, DHCPMessage *message,
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client->receive_message =
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sd_event_source_unref(client->receive_message);
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client->fd = safe_close(client->fd);
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client->fd = asynchronous_close(client->fd);
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} else if (r == -ENOMSG)
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/* invalid message, let's ignore it */
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return 0;
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