From 64ad5e515e84d312a67470c91b75251c6590eccc Mon Sep 17 00:00:00 2001 From: forbelief Date: Sun, 20 Nov 2016 23:31:59 -0800 Subject: [PATCH] =?UTF-8?q?=E5=88=9D=E6=AC=A1=E6=8F=90=E4=BA=A4=EF=BC=8C?= =?UTF-8?q?=E5=8C=85=E5=90=ABc=E8=AF=AD=E8=A8=80=E5=AE=9E=E7=8E=B0?= =?UTF-8?q?=E7=9A=84=EF=BC=8Ccirbuff=E5=92=8Cvarray?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .gitignore | 24 ++ LICENSE | 674 +++++++++++++++++++++++++++++++++++++++ c/cirbuff/cirbuff.c | 330 +++++++++++++++++++ c/cirbuff/cirbuff.h | 29 ++ c/cirbuff/cirbuff_test.c | 9 + c/varray/varray.c | 78 +++++ c/varray/varray.h | 22 ++ c/varray/varray_test.c | 9 + readme | 3 + 9 files changed, 1178 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 c/cirbuff/cirbuff.c create mode 100644 c/cirbuff/cirbuff.h create mode 100644 c/cirbuff/cirbuff_test.c create mode 100644 c/varray/varray.c create mode 100644 c/varray/varray.h create mode 100644 c/varray/varray_test.c create mode 100644 readme diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..11959a8 --- /dev/null +++ b/.gitignore @@ -0,0 +1,24 @@ +# 常见文件 +*.o +*.a +*.i +*.out +*.so +*.bak +*.elf +*.h.* +.* + +# 压缩文件 +*.gz +*.tar +*.xz + +# 索引文件 +cscope.* +ncscope.* +tags + + +# ! +!.gitignore diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..9cecc1d --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + {one line to give the program's name and a brief idea of what it does.} + Copyright (C) {year} {name of author} + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + {project} Copyright (C) {year} {fullname} + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/c/cirbuff/cirbuff.c b/c/cirbuff/cirbuff.c new file mode 100644 index 0000000..8619ec1 --- /dev/null +++ b/c/cirbuff/cirbuff.c @@ -0,0 +1,330 @@ +/* + * cirbuff.c - 环形缓冲区的实现 + * + * 采用记录读写位置的方法实现，没有做线程安全处理。 + */ + + +#include + +#include "cirbuff.h" + +struct cirbuff +{ + uint8_t *buff; + uint32_t rpos; + uint32_t wpos; + uint32_t size; + uint32_t cnt; + uint32_t update; +}; + + + +// 静态函数声明 +static uint32_t cirbuff_cover_write(cirbuff_handle cbuff_h, + uint8_t *indata, uint32_t inlen); +static uint32_t cirbuff_nocover_write(cirbuff_handle cbuff_h, + uint8_t *indata, uint32_t inlen); +static uint32_t cirbuff_clear_read(cirbuff_handle cbuff_h, + uint8_t *outdata, uint32_t outlen); +static uint32_t cirbuff_noclear_read(cirbuff_handle cbuff_h, + uint8_t *outdata, uint32_t outlen); + + + +// 以下函数为对循环缓冲区的操作 + + +/* + * cirbuff_creat - 创建一个环形缓冲区 + * + * 所做的包括分配空间和初始变量赋值 + */ +cirbuff_handle cirbuff_creat(uint32_t size) +{ + struct cirbuff *cbuff = NULL; + int32_t rlt = 0; + + if (size == 0) + rlt = -1; + else + rlt = 1; + + // 为cbuff分配空间 + if (rlt) + { + cbuff = (struct cirbuff *)malloc(sizeof(*cbuff)); + if (cbuff == NULL) + rlt = -2; + } + + // 为cbuff->buff分配空间 + if (rlt) + { + cbuff->buff = (uint8_t *)malloc(size); + if (cbuff->buff == NULL) + { + free(cbuff); + cbuff = NULL; + rlt = -2; + } + } + + if (rlt) + { + cbuff->rpos = 0; + cbuff->wpos = 0; + cbuff->size = size; + cbuff->cnt = 0; + cbuff->update = 0; + } + + return (cirbuff_handle)cbuff; +} + +/* + * cirbuff_write - 往环形缓冲区中写入数据 + * @cbuff: + * @indata: + * @inlen: + * @be_cover: 0表示非覆盖，1表示覆盖 + * + * 覆盖写入时，如果buff满会循环覆盖先前已有的数据，并返回覆盖的数据计数。 + * 非覆盖写入时，如果写入下一个数据时，buff已满，就退出，并返回写入的数据计数。 + */ +uint32_t cirbuff_write(cirbuff_handle cbuff_h, + uint8_t *indata, uint32_t inlen, uint8_t be_cover) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + int32_t ret; + + if (be_cover) + ret = cirbuff_cover_write(cbuff, indata, inlen); + else + ret = cirbuff_nocover_write(cbuff, indata, inlen); + + return ret; +} + + +/* + * cirbuff_cover_write - 覆盖写入循环缓冲区 + * + * 返回覆盖的字节数 + */ +static uint32_t cirbuff_cover_write(cirbuff_handle cbuff_h, + uint8_t *indata, uint32_t inlen) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + uint32_t i; + uint32_t cover_cnt = 0; + + for (i = 0; i < inlen; i++) + { + cbuff->buff[cbuff->wpos] = indata[i]; + + // 更新状态 + cbuff->wpos++; + if (cbuff->wpos == cbuff->size) + cbuff->wpos = 0; + + // 是否存储区满 + if (cirbuff_be_full(cbuff)) + { + cbuff->rpos = cbuff->wpos; + cover_cnt++; + } + else + { + cbuff->cnt++; + } + } + + if (i) + cbuff->update = 1; + + return cover_cnt; +} + +/* + * cirbuff_nocover_write - 非覆盖写入循环缓冲区 + * + * 返回写入的字节数 + */ +static uint32_t cirbuff_nocover_write(cirbuff_handle cbuff_h, + uint8_t *indata, uint32_t inlen) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + uint32_t i = 0; + + while (i < inlen) + { + // 是否存储区满 + if (cirbuff_be_full(cbuff)) + break; + + // 更新状态 + cbuff->buff[cbuff->wpos++] = indata[i]; + cbuff->cnt++; + if (cbuff->wpos == cbuff->size) + cbuff->wpos = 0; + + i++; + } + + if (i) + cbuff->update = 1; + + return i; +} + +/* + * cirbuff_clear_read - 读循环缓冲区的数据，并且清除已读的数据 + * + * 参数outdata可以为NULL，此时读操作的赋值语句被屏蔽，可用于删除一段数据 + * 返回已读的字节数，和outdata是否为NULL无关 + */ +static uint32_t cirbuff_clear_read(cirbuff_handle cbuff_h, + uint8_t *outdata, uint32_t outlen) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + uint32_t i = 0; + + while (i < outlen) + { + // 是否存储区空 + if (cirbuff_be_empty(cbuff)) + break; + + if (outdata != NULL) + outdata[i] = cbuff->buff[cbuff->rpos]; + + // 更新状态 + cbuff->cnt--; + cbuff->rpos++; + if (cbuff->rpos == cbuff->size) + cbuff->rpos = 0; + + i++; + } + + if (i) + cbuff->update = 0; + + return i; +} + +/* + * cirbuff_noclear_read - 读循环缓冲区的数据，不会清除已读的数据 + * + * 参数outdata可以为NULL，此时读操作的赋值语句被屏蔽，可用于仅仅置更新状态的操作 + * 返回已读的字节数，和outdata是否为NULL无关 + */ +static uint32_t cirbuff_noclear_read(cirbuff_handle cbuff_h, + uint8_t *outdata, uint32_t outlen) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + uint32_t i = 0; + uint32_t cnt = cbuff->cnt; + uint32_t rpos = cbuff->rpos; + + while (i < outlen) + { + // 是否存储区空 + if (cirbuff_be_empty(cbuff)) + break; + + if (outdata != NULL) + outdata[i] = cbuff->buff[rpos]; + + // 更新状态 + cnt--; + rpos++; + if (rpos == cbuff->size) + rpos = 0; + + i++; + } + + if (i) + cbuff->update = 0; + + return i; +} + +uint32_t cirbuff_read(cirbuff_handle cbuff_h, + uint8_t *outdata, uint32_t outlen, uint8_t be_clear) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + int32_t ret; + + if (be_clear) + ret = cirbuff_clear_read(cbuff, outdata, outlen); + else + ret = cirbuff_noclear_read(cbuff, outdata, outlen); + + return ret; +} + +void cirbuff_revert(cirbuff_handle cbuff_h) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + + cbuff->rpos = 0; + cbuff->wpos = 0; + cbuff->cnt = 0; + cbuff->update = 0; + + return; +} + +void cirbuff_destroy(cirbuff_handle cbuff_h) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + + if (cbuff != NULL) + { + if (cbuff->buff != NULL) + free(cbuff->buff); + + free(cbuff); + cbuff = NULL; + } + + return; +} + +// 以下函数为对循环缓冲区的查询 + +inline uint32_t cirbuff_be_empty(cirbuff_handle cbuff_h) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + + return cbuff->cnt == 0 ? 1 : 0; +} +inline uint32_t cirbuff_be_full(cirbuff_handle cbuff_h) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + + return cbuff->cnt == cbuff->size ? 1 : 0; +} +inline uint32_t cirbuff_data_num(cirbuff_handle cbuff_h) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + + return cbuff->cnt; +} +inline uint32_t cirbuff_free_num(cirbuff_handle cbuff_h) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + + return cbuff->size - cbuff->cnt; +} +inline uint32_t cirbuff_be_update(cirbuff_handle cbuff_h) +{ + struct cirbuff *cbuff = (struct cirbuff *)cbuff_h; + + return cbuff->update; +} + diff --git a/c/cirbuff/cirbuff.h b/c/cirbuff/cirbuff.h new file mode 100644 index 0000000..d3d062b --- /dev/null +++ b/c/cirbuff/cirbuff.h @@ -0,0 +1,29 @@ +/* + * cirbuff.h - 环形缓冲区的实现的外部声明 + * + * 采用记录读写位置的方法实现，没有做线程安全处理。 + */ + +#include + +typedef void * cirbuff_handle; + + + +// 对循环缓冲区的操作 +cirbuff_handle cirbuff_creat(uint32_t size); +uint32_t cirbuff_write(cirbuff_handle cbuff_h, + uint8_t *indata, uint32_t inlen, uint8_t be_cover); +uint32_t cirbuff_read(cirbuff_handle cbuff_h, + uint8_t *outdata, uint32_t outlen, uint8_t beclear); +void cirbuff_revert(cirbuff_handle cbuff_h); +void cirbuff_destroy(cirbuff_handle cbuff_h); + + +// 对循环缓冲区的查询 +uint32_t cirbuff_be_empty(cirbuff_handle cbuff_h); +uint32_t cirbuff_be_full(cirbuff_handle cbuff_h); +uint32_t cirbuff_data_num(cirbuff_handle cbuff_h); +uint32_t cirbuff_free_num(cirbuff_handle cbuff_h); +uint32_t cirbuff_be_update(cirbuff_handle cbuff_h); + diff --git a/c/cirbuff/cirbuff_test.c b/c/cirbuff/cirbuff_test.c new file mode 100644 index 0000000..2e60d12 --- /dev/null +++ b/c/cirbuff/cirbuff_test.c @@ -0,0 +1,9 @@ +/* + * cirbuff_test.c - 测试文件 + */ + +int main(int argc, char const* argv[]) +{ + + return 0; +} diff --git a/c/varray/varray.c b/c/varray/varray.c new file mode 100644 index 0000000..ca014f3 --- /dev/null +++ b/c/varray/varray.c @@ -0,0 +1,78 @@ +/* + * varray.c - 动态数组的实现 + * + */ +#include +#include + +#include "varray.h" + +// #define CLEAR_FREE_MEM + + + + +bool varray_init(varray_t *varray, uint32_t bsize) +{ + struct varray_inside *va_in = (struct varray_inside *)varray; + va_in->bsize = bsize; + + if ((va_in->buff = (uint8_t *)malloc(va_in->bsize)) == NULL) + { + return 0; + } + + va_in->size = va_in->bsize; + +#ifdef CLEAR_FREE_MEM + memset(va_in->buff, 0, va_in->size); +#endif /* CLEAR_FREE_MEM */ + + return 1; +} + + +bool check_varray(varray_t *varray, uint32_t req_size) +{ + uint8_t *new_buff = NULL; + uint32_t new_size = 0; + struct varray_inside *va_in = (struct varray_inside *)varray; + + if (req_size <= va_in->size) + return 1; + + // 确定要分配空间的大小 + new_size = (req_size % va_in->bsize == 0) ? + req_size : (req_size / va_in->bsize + 1) * va_in->bsize; + if ((new_buff = (uint8_t *)realloc(va_in->buff, new_size)) == NULL) + return 0; + + if (va_in->buff != new_buff) + free(va_in->buff); + + + va_in->buff = new_buff; +#ifdef CLEAR_FREE_MEM + memset(&va_in->buff[va_in->size], 0, new_size - va_in->size); +#endif /* CLEAR_FREE_MEM */ + va_in->size = new_size; + + return 1; +} + +void destory_varray(varray_t *varray) +{ + struct varray_inside *va_in = (struct varray_inside *)varray; + + if (va_in->buff != NULL) + { + free(va_in->buff); + va_in->buff = NULL; + } + va_in->size = 0; + va_in->bsize = 0; + return; +} + + + diff --git a/c/varray/varray.h b/c/varray/varray.h new file mode 100644 index 0000000..231a850 --- /dev/null +++ b/c/varray/varray.h @@ -0,0 +1,22 @@ +/* + * varray.h - 动态数组实现的声明 + */ + +#include +#include + + +struct varray_inside +{ + uint8_t *buff; // + uint32_t size; // + uint32_t bsize; // +}; + +typedef const struct varray_inside varray_t; + + + +bool varray_init(varray_t *varray, uint32_t bsize); +bool check_varray(varray_t *varray, uint32_t req_size); +void destory_varray(varray_t *varray); diff --git a/c/varray/varray_test.c b/c/varray/varray_test.c new file mode 100644 index 0000000..f5580ee --- /dev/null +++ b/c/varray/varray_test.c @@ -0,0 +1,9 @@ +/* + * varray_test.c - 测试文件 + */ + +int main(int argc, char const* argv[]) +{ + + return 0; +} diff --git a/readme b/readme new file mode 100644 index 0000000..3a2488f --- /dev/null +++ b/readme @@ -0,0 +1,3 @@ + +mylibrary +