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bb63e99d78
The resource pool system is highly hierarchical and keeping spare pages in pools leads to unnecessarily complex memory management. Loops have a flat hiearchy, at least for now, and it is therefore much easier to keep care of pages, especially in cases of excessive virtual memory fragmentation.
60 lines
1.1 KiB
C
60 lines
1.1 KiB
C
/*
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* BIRD -- I/O and event loop
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_SYSDEP_UNIX_IO_LOOP_H_
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#define _BIRD_SYSDEP_UNIX_IO_LOOP_H_
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#include "nest/bird.h"
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#include "lib/lists.h"
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#include "lib/event.h"
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#include "lib/timer.h"
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struct free_pages
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{
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list list; /* List of empty pages */
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event *cleanup; /* Event to call when number of pages is outside bounds */
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u16 min, max; /* Minimal and maximal number of free pages kept */
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uint cnt; /* Number of empty pages */
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};
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struct birdloop
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{
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resource r;
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pool *pool;
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pool *parent;
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struct timeloop time;
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event_list event_list;
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list sock_list;
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uint sock_num;
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BUFFER(sock *) poll_sk;
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BUFFER(struct pollfd) poll_fd;
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u8 poll_changed;
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u8 close_scheduled;
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_Atomic u32 ping_sent;
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int wakeup_fds[2];
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uint links;
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struct free_pages pages;
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void (*stopped)(void *data);
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void *stop_data;
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struct birdloop *prev_loop;
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};
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extern _Thread_local struct birdloop *birdloop_current;
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void init_pages(struct birdloop *loop);
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void flush_pages(struct birdloop *loop);
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#endif
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