47 lines
833 B
C
Executable File
47 lines
833 B
C
Executable File
#pragma once
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#include <stdio.h>
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#include <sys/threads.h>
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struct __pipe
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{
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volatile uint8_t *buffer;
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volatile int size;
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volatile int
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read,
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write;
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uint8_t options;
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THREAD *wait_get,
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*wait_put;
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};
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typedef struct __pipe PIPE;
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#define PIPE(ptr) ((PIPE*)ptr)
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typedef struct {
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FILE file;
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PIPE pipe;
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} fdPIPE;
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#define fdPIPE(ptr) ((fdPIPE*)(ptr))
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int pipe_clear(FILE* pipe);
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int pipe_options(FILE* pipe,uint8_t options);
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int pipe_get(FILE* stream);
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int pipe_put(char c,FILE* stream);
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static inline int pipe_full(FILE* pipe)
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{
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return (
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((fdPIPE(pipe)->pipe.read == 0) && (fdPIPE(pipe)->pipe.write == fdPIPE(pipe)->pipe.size - 1)) ||
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(fdPIPE(pipe)->pipe.write + 1 == fdPIPE(pipe)->pipe.read)
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);
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};
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static inline int pipe_empty(FILE* pipe)
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{
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return (fdPIPE(pipe)->pipe.read == fdPIPE(pipe)->pipe.write);
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};
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