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z***i
发帖数: 8 | 2 漂亮，用什么软件做focus stacking的。 |
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y*b
发帖数: 3190 | 3 大部分是我见过的最低价了啊，比20%要好啊, 因为有Stacks with Tiered Discount |
|
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j****c
发帖数: 19908 | 5 打晕了一只蚊子，继续focus stacking
这个是太阳光直射的，有影子
这张是用闪光灯跳闪，没影子了，但光线不够强，而且蚊子苏醒过来了腿动了，所以有
三条腿看起来有重影 |
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y*b
发帖数: 3190 | 6 http://www.sonyalpharumors.com/sony-to-work-with-invisage-on-ne
"Invisage CEO Jess Lee stated that Sony is likely to become a Invisage
partner to make the first mass production Quantum film stacked sensors in
2016. The sensors will be first used on smartphones because one of the main
advantages of the new tech is the much thinner sensor. But the new tech
could be used on larger Digital Camera sensors too because of the higher
performance. Quantum Film sensor tech explained via Wikipedia:
Quantum... 阅读全帖 |
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a**o
发帖数: 1470 | 7 yaya平常站的很懒散，只在扯着链子要往前冲的时候才有点弓背。我试着想stack她，
她总是一屁股坐下来。。。。好想拍那种标准站姿啊！
你会吗？你们club教吗？ |
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l******0
发帖数: 313 | 8 【 以下文字转载自 EmergingNetworking 讨论区 】
发信人: love1010 (亲爱的~), 信区: EmergingNetworking
标 题: 请教：哪里有C语言写的TCP/IP stack and web server？
发信站: BBS 未名空间站 (Fri May 15 23:54:43 2009)
要求是不需要Operating system就可以运行。TCP/IP只和Ethernet port通信，Web
server也只和Ethernet port通信~ 不需要underlying 的OS~
多谢~ |
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l******0
发帖数: 313 | 9 【 以下文字转载自 EmergingNetworking 讨论区 】
发信人: love1010 (亲爱的~), 信区: EmergingNetworking
标 题: 请教：哪里有C语言写的TCP/IP stack and web server？
发信站: BBS 未名空间站 (Fri May 15 23:54:43 2009)
要求是不需要Operating system就可以运行。TCP/IP只和Ethernet port通信，Web
server也只和Ethernet port通信~ 不需要underlying 的OS~
多谢~ |
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l******0
发帖数: 313 | 10 恩，这个我知道~ 但我这个和常规的思路不一样~
我需要的就像这个mini web server一样：a implementation of the TCP/IP protocol
stack together with a webserver
http://www.sics.se/~adam/miniweb/
同时还要要求不需要OS即可运行。
有人和我说如果是C语言写的话，应该不需要OS就可以运行了，是这样么？ |
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g*****g
发帖数: 34805 | 11 OS is just a module which does things like memory management,
process scheduling etc. Hardware is able to run certain format
of binary code, specialized hardware may have some of those OS
features burned in it or it's specific enough and you can have
binary code just just works for that hardware, but that's not the
point. You always need those functions somewhere. It can be hardware,
OS, or even in your TCP/IP stack. |
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l******0
发帖数: 313 | 12 对的，是要这种embedded web server，同时还要有tcp/ip stack~
应该是嵌入式的，就是不需要外界的ＯＳ～
多谢～ |
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z*****n
发帖数: 7639 | 13 你应该看看嵌入式操作系统，如果是WSN领域的，freeRTOS，contiki都可
以实现多任务和简单的tcp/ip stack，比如contiki只能建立一个tcp，
作server肯定不行。不过这些都是源码开放的，你看看自己能不能modify。 |
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l******0
发帖数: 313 | 14 不是开放，主要就是要有一个tcp/ip stack 和web server。然后整个系统最好能适合
各种cpu~ |
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l******0
发帖数: 313 | 15 不拒绝用OS, 我的意思就是要找一个这样的集成软件. 软件要能实现tcp/ip stack和
web server，软件可以内嵌os，怎个软件可以自主运行~ 而不是只能在装有操作系统的
机器上运行~ |
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l******0
发帖数: 313 | 16 恩～ 多谢帮忙澄清概念～
我现在基本理解了~
我现在主要是想知道哪里有这样系统的free的source c code，可以实现在多种cpu上运
行的web server, tcp/ip stack~ |
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z*****n
发帖数: 7639 | 17 我认为你如果只要一个最简单的webserver，tcpip stack可以不用
OS，当然了，如果这个server没什么复杂的功能，只response几个
简单页面的话：
mac层接收frames，解析ip包，里面应该包括一个tcp syn。一般网页
请求的http get命令生成一个tcp包应该不成问题。解析http get
命令，根据get 地址发送webpage，发送完毕，向客户端发送FIN指令
直接关闭连接。这样相当于把tcp当成udp来对待，不需要多线程等
需要OS才能完成的东西。 |
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f*****n
发帖数: 719 | 18 我当年做毕设弄过凌阳的一个板子，跑的好像就是IwIP还是哪个。能够处理静态网页，
包含TCP/IP STACK，能够读写网卡。不含OS。
我作的好像是个远程控制系统之类的东西，这个单片机可以把本地数据通过网页显示出
来，而且可以接受控制命令，对本地的I/O端口进行读写。 |
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c**t
发帖数: 2744 | 19 对这样的错误不知道各位有什么好的办法.如下的代码非常普通。但如果PKG.GET_DATA的
运行时间比较长，超过5分钟，在output窗口出现：
A first chance exception of type 'System.Runtime.InteropServices.COMExceptio
n' occurred in mscorlib.dll
The thread 0xea4 has exited with code 0 (0x0).。。。
程序死在 odp.Fill(ds),也没有exception抛出。同样的代码，如果sp能比较快的执行，
一点问题也没有。貌似CLR stack overflow.不知道各位碰到没有。
using Oracle.DataAccess.Client;
private void backgroundWorker_DoWork(object sender, System.ComponentModel.Do
WorkEventArgs e)
{
DataSet ds = new DataSet();
OracleConnection |
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l******0
发帖数: 313 | 20 对了，stack和server是要可以integrate的~ |
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t*******r
发帖数: 3271 | 21 是不是从网管角度来看还是不一样的? 如果误配了stack里非master的member会不会有
问题?
我觉得还是VC好, 不用STP, 而且无论console/remote从管理上都是一台机器
其他 |
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a****8
发帖数: 2771 | 22 最简单的，port channel不能跨switch。stack之后两个Switch逻辑上等于一个，可以
跑 跨switch的 port channel了 |
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f*******8
发帖数: 3612 | 24
不是，是另一个公司的。他们提到自己的3750 STACK.
我最近在复习switch的东西。想深入了解一下吧。
另外，多谢楼上几位的回答，我就不一一回了。 |
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f*******8
发帖数: 3612 | 25 stack和switch cluster应用场合有什么差别么？ |
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e**c
发帖数: 195 | 26 Write a Java program that shows whether stack frames are allocated on the
heap in your JVM implementation. You are not allowed to turn off class
verification. |
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m******t
发帖数: 2416 | 28
Is "http stack" the new trendy name for "web server", then? 8-) |
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h*********o
发帖数: 62 | 31 the thread's run method may need some local variables. Also java thread
finally will map to OS thread. each thread will have its own stack even you
have no local variables in run method. in this way, context switch is
possible. |
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s*******e
发帖数: 174 | 32 String s1 = "grapefruit";
String s2 = "grapefruit";
请问 s1 and s2 是在 stack 还是 heap 上呢？ Does s1 and s2 point to same
address?
String s3 = "grape"+"fruit";
Does s3 point to same address as s1 and s2?
String s4 = new String("grapefruit");
String s5 = new String("grapefruit");
s4 and s5 should be in heap, s4 and s5 should point to different addresses,
right?
System.out.println(s1+s2);
System.out.println(s4+s5);
which one is faster? Thanks |
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g*****g
发帖数: 34805 | 33 They don't have the same address, but have some sort of the
same internal address.
s1 = "abc";
s2 = new String("abc");
while s1!=s2, s1.intern()==s2.intern()
I think there's only one string created in heap, while references may
be on heap or stack depends on where you declare it. |
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m******g
发帖数: 516 | 34 The Java compiler must be very smart now. It create a String object instance
"abc", say S, then s1="abc" interpreted as assign the viarable s1 to
reference to S. The compiler sees another "abc" in the same {} scope (and
its parenting scope?), it must have searched its stack before creating a new
instance using String.equal() function, and found "abc" exists, s2="abc"
assigned viarable s2 to reference same instance S.
It will be really smart (or stupid) for the compiler to say "true".
String s1=" |
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x****d
发帖数: 1766 | 35 for company internal project, without js developer, only java guys, we use
vaadin, or gwt with other stacks. vaadin client basically is gwt. but vaadin
based development is fast and easy.
for public access high traffic sites, we have to stick with jsf. Sometimes
spring mvc, but mostly jsf.
for public without high volume traffics, spring, struts or even vaadin all
good.
for GAE, we have to use light weight thing, now GAE supports spring
hibernate everything, but we still use plain servlet/jsp wit... 阅读全帖 |
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l**********r
发帖数: 4612 | 36 【 以下文字转载自 Programming 讨论区 】
发信人: linuxbeginer (linux), 信区: Programming
标 题: Char x[] = "abc"; 是在heap还是stack上？
发信站: BBS 未名空间站 (Mon Oct 19 17:15:12 2009, 美东)
Char x[] = "abc";
我认为内存allocated 在heap上。对么？ |
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f*****Q
发帖数: 1912 | 37 出个连线题，看看楼主能作对不?
A: static int i;
B: int * i = malloc(sizeof(int));
C: char [] i = "i";
D: int function(){int i; return 0;}
a: heap
b: data
c: stack
d: BSS |
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w*s
发帖数: 7227 | 38 hi, i'm running 20 virtual machines (linux UML) in linux,
each of them can access a public folder in the host linux.
So i don't need to copy these apps/libs to each UML.
so i start all these UMLs, they will automatically run an app
in the public fold (/mnt/host).
But i run into
stack smashing detected error.
My questions is,
is these a bug in the application/lib itself,
or i'm running out of resources as i have 20 VMs ?
Thanks ! |
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c*****e
发帖数: 3226 | 39 why do not you use open source rtp stack?
你这么写完全是闭门造车。 |
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N******K
发帖数: 10202 | 40 open source rtp stack 包括了tcp协议？ 把linux里面的就给屏蔽了？ |
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o**o
发帖数: 3964 | 41 smart pointer就是这样的啊，int*的wrapper在stack里面
在
编
块 |
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g********t
发帖数: 153 | 42 I dn't think you can do this.
b[100] will be stack and it is defined by compiler, no any dynamica
mallocation is invovled here,
so either user-define malloc or smart ptr can't help
在
编
块 |
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P*****f
发帖数: 2272 | 43 the machine architecure is stack-model,
why bother do that?
以
定
heap |
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l*******p
发帖数: 7 | 44 语言：c++
网上查了一下，有的说是heap,有的说机不再heap也不再stack
请问到底再哪里？
先谢了 |
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q*****g
发帖数: 72 | 45 既不在heap，也不在stack， 在global name space里 |
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t**m
发帖数: 263 | 46 not stack
kind of globle heap |
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t*******l
发帖数: 3662 | 47 really? who says "heap" and who says "stack".
the language itself does not specify any data segment for the static
variable as long as the behavior is correct.
in practice, many systems will put static variables into
the data segment (if initialized)
or the bss segment (if uninitialized). |
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c********x
发帖数: 84 | 48
it is OK to new an array or vector, the pointer is located at stack but the
instant is located at the global heap. |
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e*******e
发帖数: 32 | 49 记得哪里见到过，好像说问你怎么判断stack是往哪个方向长的
请问这道题是怎么描述的，如何解答呢？多谢 |
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