From 207c1184a2c8af338d6be70e8cb7ede10a5b6a08 Mon Sep 17 00:00:00 2001 From: Andre Noll Date: Tue, 5 Oct 2021 21:31:06 +0200 Subject: [PATCH] client_common: Improve documentation of client_{pre,post}_select(). It was outdated and not worded very well. In particular, it referred to a task pointer although the argument is named "context". Also, client_open() does not return a "client data structure", so talk about the effect of that function rather than its return value. --- client_common.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/client_common.c b/client_common.c index dc24a628..c25da96b 100644 --- a/client_common.c +++ b/client_common.c @@ -50,13 +50,12 @@ void client_close(struct client_task *ct) } /* - * The preselect hook for server commands. + * This function asks the scheduler to monitor a file descriptor which + * corresponds to an active connection. The descriptor is monitored for either + * reading or writing, depending on the state of the connection. * - * The task pointer must contain a pointer to the initialized client data - * structure as it is returned by client_open(). - * - * This function checks the state of the connection and adds the file descriptor - * of the connection to the read or write fd set of s accordingly. + * The context pointer is assumed to refer to a client task structure that was + * initialized earlier by client_open(). */ static void client_pre_select(struct sched *s, void *context) { @@ -260,12 +259,15 @@ static int send_sb_command(struct client_task *ct) } /* - * The post select hook for client commands. + * This function reads or writes to the socket file descriptor which + * corresponds to an established connection between the client and the server. + * It depends on the current state of the connection and on the readiness of + * the socket file descriptor which type of I/O is going to be performed. + * Besides the initial handshake and authentication, the function sends the + * server command and receives the output from the server, if any. * - * Depending on the current state of the connection and the status of the read - * and write fd sets of s, this function performs the necessary steps to - * authenticate the connection, to send the command given by t->private_data - * and to receive para_server's output, if any. + * The context pointer refers to a client task structure that was initialized + * earlier by client_open(). */ static int client_post_select(struct sched *s, void *context) { -- 2.39.5