59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
#ifndef CLIENT_H
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#define CLIENT_H
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#include <signal.h>
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#include <time.h>
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#include <inttypes.h>
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/** CLIENT_HANDLER_TIMEOUT
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* This is the length of time (in seconds) any request can be outstanding for.
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* If we spend longer than this in a request, the whole server is killed.
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*/
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#define CLIENT_HANDLER_TIMEOUT 120
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/** CLIENT_KILLSWITCH_SIGNAL
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* The signal number we use to kill the server when *any* killswitch timer
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* fires. The handler gets the fd of the client socket to work with.
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*/
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#define CLIENT_KILLSWITCH_SIGNAL ( SIGRTMIN + 1 )
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struct client {
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/* When we call pthread_join, if the thread is already dead
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* we can get an ESRCH. Since we have no other way to tell
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* if that ESRCH is from a dead thread or a thread that never
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* existed, we use a `stopped` flag to indicate a thread which
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* did exist, but went away. Only check this after a
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* pthread_join call.
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*/
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int stopped;
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int socket;
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int fileno;
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char *mapped;
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uint64_t mapped_size;
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struct self_pipe *stop_signal;
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struct server *serve; /* FIXME: remove above duplication */
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/* Have we seen a REQUEST_DISCONNECT message? */
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int disconnect;
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/* kill the whole server if a request has been outstanding too long,
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* assuming use_killswitch is set in serve
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*/
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timer_t killswitch;
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};
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void client_killswitch_hit(int signal, siginfo_t * info, void *ptr);
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void *client_serve(void *client_uncast);
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struct client *client_create(struct server *serve, int socket);
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void client_destroy(struct client *client);
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void client_signal_stop(struct client *client);
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#endif
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