Naoya Takamura / Mbed OS C027_SupportTest_IM920_thread

IM920地温観測システム CQ 2017ARMセミナー用サンプルプログラム

Dependencies:   C027_Support_ForIM920

Fork of C027_SupportTest by u-blox

RingBuf.cpp@35:7838543282c2, 2017-07-13 (annotated)

Committer:
ntaka206
Date:
Thu Jul 13 00:44:49 2017 +0000
Revision:
35:7838543282c2
???????commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ntaka206 35:7838543282c2 1 #include "RingBuf.h"
ntaka206 35:7838543282c2 2
ntaka206 35:7838543282c2 3 RingBuf::RingBuf(int _size)
ntaka206 35:7838543282c2 4 {
ntaka206 35:7838543282c2 5 buf = new RingBufType[_size];
ntaka206 35:7838543282c2 6 size = _size;
ntaka206 35:7838543282c2 7 wp = 0;
ntaka206 35:7838543282c2 8 rp = 0;
ntaka206 35:7838543282c2 9 latest = -1;
ntaka206 35:7838543282c2 10 }
ntaka206 35:7838543282c2 11
ntaka206 35:7838543282c2 12 RingBuf::~RingBuf()
ntaka206 35:7838543282c2 13 {
ntaka206 35:7838543282c2 14 delete [] buf;
ntaka206 35:7838543282c2 15 }
ntaka206 35:7838543282c2 16
ntaka206 35:7838543282c2 17 void RingBuf::push(RingBufType *d)
ntaka206 35:7838543282c2 18 {
ntaka206 35:7838543282c2 19 latest = wp;
ntaka206 35:7838543282c2 20 buf[wp++] = *d;
ntaka206 35:7838543282c2 21 wp %= size;
ntaka206 35:7838543282c2 22 }
ntaka206 35:7838543282c2 23 RingBufType* RingBuf::pop(void)
ntaka206 35:7838543282c2 24 {
ntaka206 35:7838543282c2 25 if (rp == wp) return NULL;
ntaka206 35:7838543282c2 26 RingBufType *d = &buf[rp++];
ntaka206 35:7838543282c2 27 rp %= size;
ntaka206 35:7838543282c2 28 return d;
ntaka206 35:7838543282c2 29 }
ntaka206 35:7838543282c2 30 int RingBuf::len_get(void)
ntaka206 35:7838543282c2 31 {
ntaka206 35:7838543282c2 32 int i = wp - rp;
ntaka206 35:7838543282c2 33 if (i < 0) i += size;
ntaka206 35:7838543282c2 34 return i;
ntaka206 35:7838543282c2 35 }
ntaka206 35:7838543282c2 36 int RingBuf::size_get(void)
ntaka206 35:7838543282c2 37 {
ntaka206 35:7838543282c2 38 return size;
ntaka206 35:7838543282c2 39 }
ntaka206 35:7838543282c2 40 void RingBuf::clear(void)
ntaka206 35:7838543282c2 41 {
ntaka206 35:7838543282c2 42 rp = 0;
ntaka206 35:7838543282c2 43 wp = 0;
ntaka206 35:7838543282c2 44 }
ntaka206 35:7838543282c2 45 RingBufType* RingBuf::peek(int p)
ntaka206 35:7838543282c2 46 {
ntaka206 35:7838543282c2 47 if (p < 0 || p >= size) return NULL;
ntaka206 35:7838543282c2 48 return &buf[p];
ntaka206 35:7838543282c2 49 }
ntaka206 35:7838543282c2 50