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view src/lib-storage/index/index-search-private.h @ 12874:0461e23ae57c

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Search supports now prefetching data for returned mails. Dropped imapc's own prefetching. mail_prefetch_count specifies how many mails can be kept open and issue a prefetch. This works using posix_fadvise(POSIX_FADV_WILLNEED) for maildir, sdbox and cydir backends. Apparently only Linux supports this. imapc backend also implements this internally by sending wanted IMAP commands to remote server. The command pipelining helps with latency. This change also makes it actually possible for imapc backend to first check if wanted data is already cached in local index and avoid sending unnecessary IMAP commands to remote server.
author Timo Sirainen <tss@iki.fi>
date Thu, 31 Mar 2011 11:10:22 +0300
parents d399d5c65aca
children d5bbb1d203c5
line wrap: on
line source

#ifndef INDEX_SEARCH_PRIVATE_H
#define INDEX_SEARCH_PRIVATE_H

#include "mail-storage-private.h"

struct index_search_context {
        struct mail_search_context mail_ctx;
	struct mail_index_view *view;
	struct mailbox *box;

	enum mail_fetch_field extra_wanted_fields;
	struct mailbox_header_lookup_ctx *extra_wanted_headers;

	uint32_t seq1, seq2;
	struct mail *cur_mail;
	struct index_mail *cur_imail;
	struct mail_thread_context *thread_ctx;

	ARRAY_DEFINE(mails, struct mail *);
	unsigned int unused_mail_idx;
	unsigned int max_mails;

	struct timeval search_start_time, last_notify;
	struct timeval last_nonblock_timeval;
	unsigned long long cost, next_time_check_cost;

	unsigned int failed:1;
	unsigned int sorted:1;
	unsigned int have_seqsets:1;
	unsigned int have_index_args:1;
	unsigned int have_mailbox_args:1;
};

struct mail *index_search_get_mail(struct index_search_context *ctx);

#endif