) inttest_and_set_bit (NR,NBSP;VOIDNBSP;*ADDR); inttest_and_ Clear_bit (NR,NBSP;VOIDNBSP;*ADDR); Inttest_and_change_bit (NR,NBSP;VOIDNBSP;*ADDR);Seqlock (Sequential Lock)With the Seqlock lock, the read execution unit is not blocked by the write execution unit, that is, the read execution unit can continue to read while the write execution unit is writing to the shared resource protected by the Seqlock lock, without having to wait for the write execution unit to complete the write operation. The
1. PstreePstree displaying processes in a tree structure$ pstree-p Work | grep adSSHD (22669)---bash (22670)---ad_preprocess (4551)-+-{ad_preprocess} (4552)|-{ad_preprocess} (4553)|-{ad_preprocess} (4554)|-{ad_preprocess} (4555)|-{ad_preprocess} (4556)'-{ad_preprocess} (4557)Work for the working user,-p for the display process identification number, ad_preprocess a total of 6 sub-threads, plus the main thread total of 7 threadsYou need to find the parent process that dbeng7 this zombie process.
to other nodes when the primary node fails. You can also manually perform a master-slave switchover of a replica set.1. Failover switching[[emailprotected] etc]# PS aux | grep Mongod//view process//root 17116 1.2 5.8 1546916 58140? Sl 14:31 0:51 mongod-f/etc/mongod.confroot 17413 1.0 5.7 1445624 57444? Sl 14:34 0:39 mongod-f/etc/mongod2.confroot 17868 1.2 5.5 1446752 55032?
1. PstreePstreedisplaying processes in a tree structure$ pstree-p Work | grep adSSHD (22669)---bash (22670)---ad_preprocess (4551)-+-{ad_preprocess} (4552)|-{ad_preprocess} (4553)|-{ad_preprocess} (4554)|-{ad_preprocess} (4555)|-{ad_preprocess} (4556)'-{ad_preprocess} (4557) Work for working users, - P to display the process identification code, ad_preprocess it's all started. 6 Child threads, plus the main thread 7 a thread2. Ps-lf$ PS-LF4551UID PID PPID LWP C nlwp stime TTY STAT time CMDWork 4
parameter must specify the Flash erasure range.
Erase-erase FLASH memory
Usage:
Erase start end
-Erase FLASH from addr 'start' to addr 'end'
Erase start + len
-Erase FLASH from addr 'start' to the end of sect w/addr 'start' + 'len'-1
Erase N: SF [-SL]
-Erase sectors SF-SL in FLASH bank # N
Erase bank N
-Erase FLASH bank # N
Erase all
-Erase all FLASH banks
According to the start address and end address,
When the solution deviates from your expectation, you may need to clear the embarrassing past, take a deep breath, and then try to start with a new attitude. On a golf course, this is called "Mulligan". On Campus games, it is called "do-over". on a computer, we call it "reboot ".
From WM to WP7, It is a reboot.
It supports the Popular Development Platforms: Silverlight and xNa.
Select WP7 as the target
WP7ProgramAll use. Net ControlCode(. NET managed code. You can use C #, VB.net, and
:] #去掉第一项, 40 data bits leftFor I in TL:If i>100: #若数据位为1, Time is 50US low +70us high level =120USTb.append (1)ElseTb.append (0) #若数据位为0, time is 50US low +25us high level =75us#这里取大于100us就为1# print (TB) #反注释可查看每一位状态Return TB def getresult (Owpin):For I in range (10):sh=0;sl=0;th=0; tl=0; C=0Result=getval (Owpin)# print (len (result))If Len (result) ==40:For I in range (8):#计算每一位的状态, each word 8 bits, with this as humidity integer, humidity fractiona
: P should be black, s changed to red, end.Analysis: This is the simplest case, since the n side of a black node, then the S side to take out a black node to share, so that the S side is not less a black node, and n this side will be more a black node, so restore the balance, how beautiful things ha!Case 4: P Any color, S is black, n is the left child of P, s right child SR is red, s left child arbitrarily (or n is P's right child, s left child is red, S's right child is random---s with red son
address is in flash, it will directly call the function operation for writing flash. Therefore, use this command for U-boot flash writing. Of course, you need to clean the corresponding flash area first.
The Count parameter is the number of copies. The unit is byte, word, and long word, respectively, based on CP. B CP. W CP. L.
5. CRC32
CRC32 address count [ADDR]
-Compute CRC32 checksum [Save at ADDR]
The CRC32 command can calculate the checksum of stored data.
The 1st parameter address is the
reading, the writer is allowed to continue running. When multiple readers and a few writers share a lock, seqlock is useful, because seqlock is more advantageous to the writer. As long as there are no other writers, the write lock can always be successful. According to the concept of lock-free and clock functions, the kernel developer in the 2.6 kernel modifies the read/write lock to the sequential lock seqlock. The Code is as follows:
Listing 6. 2.6.10 seqlock implementation code
I recently installed a vs2008 program to study Silverlight (SL) and WCF. I found that calling a previously released WCF has never been successful and an error message HTTP is returned: // localhost/mywcfservice/service2.svc do not allow cross-origin access. my SL access path is http: // localhost: 8457/silverlightapplication3.web/silverlightapplication3testpage. aspx #/home. the WCF domain is http: // local
Source: http://www.xymyeah.com/979.html
1. pstree
Pstree displays processes in a tree structure$ Pstree-P work | grep adSshd (22669) --- bash (22670) --- ad_preprocess (4551)-+-{ad_preprocess} (4552)|-{Ad_preprocess} (4553)|-{Ad_preprocess} (4554)|-{Ad_preprocess} (4555)|-{Ad_preprocess} (4556)'-{Ad_preprocess} (4557)
Work is the working user,-P is the display process identifier, ad_preprocess has started 6 sub-threads, and a total of 7 main threads
2. PS-lf
$ PS-lf 4551Uid pid ppid lwp C nlwp
ADDR 'end'
Erase N: SF [-Sl]
-Erase sectors SF-SL in Flash bank # N
Erase Bank N
-Erase flash bank # N
Erase all
-Erase all Flash banks
The erase command can be used to clean flash.
The parameter must specify the flash erasure range.
According to the start address and end address, start must be the start address of the erased block; end must be the end address of the erased end block. This method is the mo
) inttest_and_set_bit (NR,NBSP;VOIDNBSP;*ADDR); inttest_and_ Clear_bit (NR,NBSP;VOIDNBSP;*ADDR); Inttest_and_change_bit (NR,NBSP;VOIDNBSP;*ADDR);Seqlock (Sequential Lock)With the Seqlock lock, the read execution unit is not blocked by the write execution unit, that is, the read execution unit can continue to read while the write execution unit is writing to the shared resource protected by the Seqlock lock, without having to wait for the write execution unit to complete the write operation. The
) inttest_and_set_bit (NR,NBSP;VOIDNBSP;*ADDR); inttest_and_ Clear_bit (NR,NBSP;VOIDNBSP;*ADDR); Inttest_and_change_bit (NR,NBSP;VOIDNBSP;*ADDR);Seqlock (Sequential Lock)With the Seqlock lock, the read execution unit is not blocked by the write execution unit, that is, the read execution unit can continue to read while the write execution unit is writing to the shared resource protected by the Seqlock lock, without having to wait for the write execution unit to complete the write operation. The
This example describes how the go language intercepts strings by display length. Share to everyone for your reference. The specific analysis is as follows:
Intercept the string according to the display length, before PHP uses the UTF8 code, 10 English and 10 Chinese characters display length gap is too big, by byte intercept of words and will be intercepted half Chinese characters, so write these two functions.
These two days in toss Golang, so use Golang rewrite a function. The code is as fol
for that name? Even though the name itself is hilarious enough. What special features does this command have? It's not like you're going to be able to flush the toilet after you've executed the command. It is a tool that can be used to spell out larger letters, specifically spelling out what words are determined by the parameters behind the command, not only that, it can also print out a variety of style effects, such as color, metal luster and so on.Installing toilet
~# sudo apt-get i
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