golang - 随笔分类(第4页) - papering

a lock-free fixed-size single-producer multi-consumer queue 无锁单生产者多消费者

摘要：Go\src\sync\poolqueue.go // poolDequeue is a lock-free fixed-size single-producer, // multi-consumer queue. The single producer can both push and pop 阅读全文

posted @ 2022-10-10 11:31 papering 阅读(56) 评论(0) 推荐(0)

Go 与 C 的桥梁：cgo 入门，剖析与实践

摘要：https://zhuanlan.zhihu.com/p/349197066 阅读全文

posted @ 2022-10-08 15:08 papering 阅读(64) 评论(0) 推荐(0)

序列化结构体字段顺序按照结构体的某个字段排序

摘要：devtool显示的bug Go JSON (Un)Marshalling, Missing Fields and Omitempty · vsupalov.com https://vsupalov.com/go-json-omitempty/ golang中的排序，按照结构体的某个字段排序_rao 阅读全文

posted @ 2022-09-30 14:52 papering 阅读(196) 评论(0) 推荐(0)

内存布局

摘要：https://mp.weixin.qq.com/s/PN-tyUEez2rQT9aitxjy2g 阅读全文

posted @ 2022-09-29 21:03 papering 阅读(37) 评论(0) 推荐(0)

从Context到go设计理念

摘要：轻松上手！手把手带你掌握从Context到go设计理念 https://mp.weixin.qq.com/s/z4XPnfc41U5OMqGqs9Pf8w 搜索复制阅读全文

posted @ 2022-09-23 22:23 papering 阅读(40) 评论(0) 推荐(0)

断点调试 Debugging Go Applications using Delve

摘要：Debugging Go Programs using Delve - golangbot.com https://golangbot.com/debugging-go-delve/ Golang Debugging With Delve [Step by Step] | Golang Cafe h 阅读全文

posted @ 2022-09-15 11:22 papering 阅读(29) 评论(0) 推荐(0)

C source files not allowed when not using cgo or SWIG

摘要：C source files not allowed when not using cgo or SWIG 搜索复制阅读全文

posted @ 2022-09-11 08:50 papering 阅读(323) 评论(0) 推荐(0)

Check if the context is expired.

摘要：// Check if the context is expired. select { default: case <-ctx.Done(): db.mu.Unlock() return nil, ctx.Err() } Go\src\database\sql\sql.go 阅读全文

posted @ 2022-09-08 18:00 papering 阅读(60) 评论(0) 推荐(0)

Go Memory Model 内存模型同步 goroutine

摘要：小结： 1、序列化访问 Programs that modify data being simultaneously accessed by multiple goroutines must serialize such access. To serialize access, protect t 阅读全文

posted @ 2022-09-04 20:44 papering 阅读(147) 评论(0) 推荐(0)

for 循环中的 i++ ++i

摘要：for (int i = 0; i < 4; ++i) c 执行结果一样 for i := 0; i <N; ++i { go 不能编译 1 2 #include <stdio.h> 3 int main() 4 { 5 int i,j; 6 i++; 7 ++j; 8 } 1 .file "loo 阅读全文

posted @ 2022-09-03 10:57 papering 阅读(93) 评论(0) 推荐(0)

源码锁自旋 Spin go程调度顺序死锁读写锁 go程均分时间片

摘要：github.com\google\gopacket@v1.1.19\pcap\pcap_windows.go switch goroutines // waitForPacket waits for a packet or for the timeout to expire. func (p *H 阅读全文

posted @ 2022-09-01 13:39 papering 阅读(77) 评论(0) 推荐(0)

A Guide to the Go Garbage Collector

摘要：小结： 1、 stack allocation he space is stored on the goroutine stack. escape to the heap the Go compiler cannot determine its lifetime 垃圾回收目标：堆空间大小始终低于目标阅读全文

posted @ 2022-08-30 11:19 papering 阅读(61) 评论(0) 推荐(0)

Golang 中反射的应用与理解

摘要：Golang 中反射的应用与理解 https://mp.weixin.qq.com/s/TmzV2VTfkE8of2_zuKa0gA Golang 中反射的应用与理解原创赵燕辉字节跳动技术团队 2022-08-23 12:00 发表于北京字节跳动技术团队字节跳动的技术实践分享 231篇原创阅读全文

posted @ 2022-08-29 09:53 papering 阅读(164) 评论(0) 推荐(0)

内存消耗限制 kratos go

摘要：memory = 14261 KB 阅读全文

posted @ 2022-08-24 17:56 papering 阅读(22) 评论(0) 推荐(0)

词典遍历顺序

摘要：func mapKeyOrder() { m := map[int]struct{}{} for i := 0; i < 16; i++ { m[i] = struct{}{} } for i := 0; i < 16; i++ { l := []int{} for k := range m { l 阅读全文

posted @ 2022-08-24 14:30 papering 阅读(38) 评论(0) 推荐(0)

context

摘要：Go组件：context学习笔记！ https://mp.weixin.qq.com/s/OCpVRwtiphFRZgu9zdae5g 阅读全文

posted @ 2022-08-22 21:23 papering 阅读(37) 评论(0) 推荐(0)

浮点数 mysql golang 时间序列 32位浮点 64位浮点 float32 float64 保证一定有一行返回

摘要：3) 保证一定有一行返回 SELECT COUNT(*),IF(a.Id IS NULL,0,123) ,a.Id rows.Scan(&Val, 2） mysql `ThresholdMin` DECIMAL(20,6) NOT NULL DEFAULT '0.000000' COMMENT '阈阅读全文

posted @ 2022-08-18 11:51 papering 阅读(152) 评论(0) 推荐(0)

bug 浅复制

摘要：u := v u.DeviceModelMonitorTemplateId = v.Id u.Id = int32(Id) 阅读全文

posted @ 2022-08-15 16:51 papering 阅读(29) 评论(0) 推荐(0)

关闭通道 Close Channels mutex 锁加上一个环状缓存、一个发送方队列和一个接收方队列

摘要：https://golang.design/under-the-hood/zh-cn/part1basic/ch03lang/chan/ Channel 底层结构实现 Channel 的结构并不神秘，本质上就是一个 mutex 锁加上一个环状缓存、一个发送方队列和一个接收方队列： 1 2 3 4 阅读全文

posted @ 2022-08-11 18:01 papering 阅读(83) 评论(0) 推荐(0)

context.WithValue context.WithTimeout

摘要：func tctx() { f := func() context.Context { ctx := context.TODO() ctx = context.WithValue(ctx, "k", "v") myprint(ctx.Value("k")) return ctx } ctx := f 阅读全文

posted @ 2022-07-27 20:09 papering 阅读(125) 评论(0) 推荐(0)

papering

随笔分类 - golang