36 lines
1.0 KiB
C
36 lines
1.0 KiB
C
#ifndef SOCKS_RINGBUFFER_H_
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#define SOCKS_RINGBUFFER_H_
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#include <socks/locks.h>
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#include <socks/sched.h>
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struct ringbuffer {
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unsigned char *r_buffer;
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size_t r_write_ptr;
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size_t r_read_ptr;
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size_t r_size;
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spin_lock_t r_lock;
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struct waitqueue r_wait_readers;
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struct waitqueue r_wait_writers;
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};
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enum ringbuffer_flags {
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RB_NORMAL = 0x00u,
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RB_NOBLOCK = 0x01u,
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};
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extern struct ringbuffer *ringbuffer_create(size_t size);
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extern void ringbuffer_destroy(struct ringbuffer *buf);
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extern kern_status_t ringbuffer_init(struct ringbuffer *buf, size_t size);
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extern kern_status_t ringbuffer_deinit(struct ringbuffer *buf);
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extern size_t ringbuffer_unread(struct ringbuffer *buf);
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extern size_t ringbuffer_avail(struct ringbuffer *buf);
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extern size_t ringbuffer_read(struct ringbuffer *buf, size_t size, void *buffer, enum ringbuffer_flags flags);
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extern size_t ringbuffer_write(struct ringbuffer *buf, size_t size, const void *buffer, enum ringbuffer_flags flags);
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extern int ringbuffer_write_would_block(struct ringbuffer *buf);
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#endif
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