Tuesday, August 21, 2007

Read / Write Lock Syntactic Sugar?

I'm sure this must have been discussed already, but a search of Google and the JCP turned up nothing.

It occurred to me after reviewing the documentation for the Java 1.5 ReeentrantReadWriteLock from the java.util.concurrent package it could benefit from some syntactic sugar a la the for loop.

If you browse the Javadocs for ReentrantReadWriteLock, you'll find that the suggested idiom is to use a try finally block like so:

public Data get(String key) {
r.lock(); try { return m.get(key); } finally { r.unlock(); }
}
What if you could write something like:
public Data get(String key) {
lock (rwl.readLock()) {
return m.get(key);
}
}
instead?

I asked this question around the water-cooler (so to speak) at Terracotta and got some good responses - the most convincing was that maybe it was to ensure that Read Write locks looked different enough from traditional synchronized so that it's obvious to the reader that there is something different going on.

This seems a reasonable argument, but I don't completely buy it. I personally think several things about Java lead to it's eventual success:

  1. Simplicity - embodied in things like GC, single inheritance, lack of operator overloading, etc.

  2. Built-in thread primitives and synchronization. C++ finally got these with posix threads, but its never been as easy, IMO, as Java

  3. Ubiquity. Sun's mantra "Write once, run everywhere" is a great philosophy - even if it isn't 100% true it's pretty close


So therefore I think we deserve some (more) simplicity.

Do I think the first idiom has its place? Sure. It provides for composable synchronization, which is important if you want to decouple your synchronization from your call-stack - something which Java doesn't give you out of the box (but of course, you can always implement it yourself using the synchronization primitives).

Well if you have seen this before, let me know in the comments. Or let me know what you think of this syntax.

30 comments:

Eugene Kuleshov said...

I believe the major advantage of the ReeentrantReadWriteLock is that it allows to break synchronization across several methods (lock in one place and unlock in a different one).

As for the different syntax, I think Neal Gafter's colusure proposal + some static utility classes will provide exact semantics but with nicer and more flexible syntax.

Taylor said...

Eugene,

I agree, I am not proposing removing that idiom, just adding to it.

And agreed, maybe a closure syntax would allow us to write this..

Daniel Spiewak said...

The problem with adding a new keyword, or appending the synchronized capabilities, is it further complicates the language. The ReadWriteLock API is flexible enough to allow a myriad of different strategies, and the syntax really isn't that overwhelming.

Considering that closures seem to stand a good chance of making the Java 7 feature list, I don't really see a reason to add a specialized syntax to further complicated an already obfuscated language solely for the purpose of wrapping (and intrinsically limiting) a pre-existing API.

Robert said...

Why do you need new syntax to perform a simple and easy to understand operation? The try/finally pattern is used in many other scenarios, eg opening-using-closing ResultSets, so why should this one be any different?

I'm sure you can configure your IDE to write it in a single key press.

JodaStephen said...

If the control abstraction part of closures are adopted into Java then you won't need to add a dedicated piece of syntax. See BGGA - http://www.javac.info/ - or FCM-JCA - http://docs.google.com/Doc?id=ddhp95vd_0f7mcns.

Taylor said...

@Robert

Did you read my post or just the title? Because I thought I made it pretty clear that I felt new syntax would provide a more simple idiom. It's not about how easy it is physically to type, but the syntax that makes it easier on the eyes.

One could have argued that the for loop was just fine, the syntactic sugar added in Java 5 was unnecessary because it can all be done using the traditional syntax, or look even at the arguments for the new syntax for closures proposed by various people - you can do closures today w/Java, it's just not fun.

Is it necessary to add this change? No. Will it radically change my life and bring me nirvana? No. It just seemed that at least the discussion should be had - personally I avoid try / finally as much as possible - its unavoidable to be sure - but that doesn't mean I have to like it.

To those pointing out that closures will do the job for us, I agree with that point and look forward to the ratification of the requisite proposals.

Alex said...

I think definitely the way to handle this is via a control abstraction mechanism as defined in the various closure proposals. This is kind of a poster child example for control abstraction. Basically, having the ability to define new control abstractions lets you add things that appear to extend the Java language itself. Naturally, this is controversial, but would be immensely powerful. Personally, I like the JCA/FCM style better than the BGGA style.

Josh Bloch (not a fan of closures) has also proposed something called "automatic resource management blocks" as an alternative (not requiring the more general closure/control abstraction proposals).

You can find links to all this stuff on my Java 7 page.

sexy said...

情趣用品,情趣用品,情趣用品,情趣用品,情趣用品,情趣用品,情趣用品,情趣用品,情趣,情趣,情趣,情趣,情趣,情趣,情趣,情趣,A片,視訊聊天室,聊天室,視訊,視訊聊天室,080苗栗人聊天室,上班族聊天室,成人聊天室,中部人聊天室,一夜情聊天室,情色聊天室,視訊交友網

免費A片,AV女優,美女視訊,情色交友,免費AV,色情網站,辣妹視訊,美女交友,色情影片,成人影片,成人網站,A片,H漫,18成人,成人圖片,成人漫畫,情色網,日本A片,免費A片下載,性愛

A片,色情,成人,做愛,情色文學,A片下載,色情遊戲,色情影片,色情聊天室,情色電影,免費視訊,免費視訊聊天,免費視訊聊天室,一葉情貼圖片區,情色,情色視訊,免費成人影片,視訊交友,視訊聊天,視訊聊天室,言情小說,愛情小說,AIO,AV片,A漫,avdvd,聊天室,自拍,情色論壇,視訊美女,AV成人網,色情A片,SEX,成人論壇

情趣用品,A片,免費A片,AV女優,美女視訊,情色交友,色情網站,免費AV,辣妹視訊,美女交友,色情影片,成人網站,H漫,18成人,成人圖片,成人漫畫,成人影片,情色網


情趣用品,A片,免費A片,日本A片,A片下載,線上A片,成人電影,嘟嘟成人網,成人,成人貼圖,成人交友,成人圖片,18成人,成人小說,成人圖片區,微風成人區,成人文章,成人影城,情色,情色貼圖,色情聊天室,情色視訊,情色文學,色情小說,情色小說,臺灣情色網,色情,情色電影,色情遊戲,嘟嘟情人色網,麗的色遊戲,情色論壇,色情網站,一葉情貼圖片區,做愛,性愛,美女視訊,辣妹視訊,視訊聊天室,視訊交友網,免費視訊聊天,美女交友,做愛影片

av,情趣用品,a片,成人電影,微風成人,嘟嘟成人網,成人,成人貼圖,成人交友,成人圖片,18成人,成人小說,成人圖片區,成人文章,成人影城,愛情公寓,情色,情色貼圖,色情聊天室,情色視訊,情色文學,色情小說,情色小說,色情,寄情築園小遊戲,情色電影,aio,av女優,AV,免費A片,日本a片,美女視訊,辣妹視訊,聊天室,美女交友,成人光碟

情趣用品.A片,情色,情色貼圖,色情聊天室,情色視訊,情色文學,色情小說,情色小說,色情,寄情築園小遊戲,情色電影,色情遊戲,色情網站,聊天室,ut聊天室,豆豆聊天室,美女視訊,辣妹視訊,視訊聊天室,視訊交友網,免費視訊聊天,免費A片,日本a片,a片下載,線上a片,av女優,av,成人電影,成人,成人貼圖,成人交友,成人圖片,18成人,成人小說,成人圖片區,成人文章,成人影城,成人網站,自拍,尋夢園聊天室

said...

runescape money runescape gold runescape money buy runescape gold buy runescape money runescape money runescape gold wow power leveling wow powerleveling Warcraft Power Leveling Warcraft PowerLeveling buy runescape gold buy runescape money runescape itemsrunescape accounts runescape gp dofus kamas buy dofus kamas Guild Wars Gold buy Guild Wars Gold lotro gold buy lotro gold lotro gold buy lotro gold lotro gold buy lotro gold runescape money runescape power leveling runescape money runescape gold dofus kamas cheap runescape money cheap runescape gold Hellgate Palladium Hellgate London Palladium Hellgate money Tabula Rasa gold tabula rasa money Tabula Rasa Credit Tabula Rasa Credits Hellgate gold Hellgate London gold wow power leveling wow powerleveling Warcraft PowerLeveling Warcraft Power Leveling World of Warcraft PowerLeveling World of Warcraft Power Leveling runescape power leveling runescape powerleveling eve isk eve online isk eve isk eve online isk tibia gold Fiesta Silver Fiesta Gold
Age of Conan Gold
buy Age of Conan Gold
aoc gold

呼吸机
无创呼吸机
家用呼吸机
呼吸机
家用呼吸机
美国呼吸机
篮球培训
篮球培训班
篮球夏令营
china tour
beijing tour
beijing travel
china tour
tibet tour
tibet travel
computer monitoring software
employee monitoring

平平 said...

^^ nice blog!! ^@^

徵信, 徵信網, 徵信社, 徵信社, 徵信社, 徵信社, 感情挽回, 婚姻挽回, 挽回婚姻, 挽回感情, 徵信, 徵信社, 徵信, 徵信, 捉姦, 徵信公司, 通姦, 通姦罪, 抓姦, 抓猴, 捉猴, 捉姦, 監聽, 調查跟蹤, 反跟蹤, 外遇問題, 徵信, 捉姦, 女人徵信, 女子徵信, 外遇問題, 女子徵信, 徵信社, 外遇, 徵信公司, 徵信網, 外遇蒐證, 抓姦, 抓猴, 捉猴, 調查跟蹤, 反跟蹤, 感情挽回, 挽回感情, 婚姻挽回, 挽回婚姻, 外遇沖開, 抓姦, 女子徵信, 外遇蒐證, 外遇, 通姦, 通姦罪, 贍養費, 徵信, 徵信社, 抓姦, 徵信, 徵信公司, 徵信社, 徵信, 徵信公司, 徵信社, 徵信公司, 女人徵信, 外遇

徵信, 徵信網, 徵信社, 徵信網, 外遇, 徵信, 徵信社, 抓姦, 徵信, 女人徵信, 徵信社, 女人徵信社, 外遇, 抓姦, 徵信公司, 徵信社, 徵信社, 徵信社, 徵信社, 徵信社, 女人徵信社, 徵信社, 徵信, 徵信社, 徵信, 女子徵信社, 女子徵信社, 女子徵信社, 女子徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信,

徵信, 徵信社,徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 徵信, 徵信社, 外遇, 抓姦, 離婚, 外遇,離婚,

徵信, 外遇, 離婚, 徵信社, 徵信, 外遇, 抓姦, 徵信社, 徵信, 徵信社, 徵信, 外遇, 徵信社, 徵信, 外遇, 抓姦, 徵信社, 征信, 征信, 徵信, 徵信社, 徵信, 徵信社, 征信, 徵信, 徵信社, 徵信, 徵信, 徵信社, 徵信, 徵信社, 徵信社, 徵信社, 徵信, 外遇, 抓姦, 徵信, 徵信社, 徵信, 徵信社, 徵信,

dsfgsdfgsdfgds said...

看房子,買房子,建商自售,自售,台北新成屋,台北豪宅,新成屋,豪宅,美髮儀器,美髮,儀器,髮型,EMBA,MBA,學位,EMBA,專業認證,認證課程,博士學位,DBA,PHD,在職進修,碩士學位,推廣教育,DBA,進修課程,碩士學位,網路廣告,關鍵字廣告,關鍵字,廣告,課程介紹,學分班,文憑,牛樟芝,段木,牛樟菇,日式料理, 台北居酒屋,燒肉,結婚,婚宴場地,推車飲茶,港式點心,尾牙春酒,台北住宿,國內訂房,台北HOTEL,台北婚宴,飯店優惠,台北結婚,婚宴場地,推車飲茶,港式點心,尾牙春酒,住宿,訂房,HOTEL,飯店,造型系列,學位,牛樟芝,腦磷脂,磷脂絲胺酸,SEO,婚宴,捷運,學區,美髮,儀器,髮型,牛樟芝,腦磷脂,磷脂絲胺酸,看房子,買房子,建商自售,自售,房子,捷運,學區,台北新成屋,台北豪宅,新成屋,豪宅,學位,碩士學位,進修,在職進修, 課程,教育,學位,證照,mba,文憑,學分班,網路廣告,關鍵字廣告,關鍵字,SEO,关键词,网络广告,关键词广告,SEO,关键词,网络广告,关键词广告,SEO,台北住宿,國內訂房,台北HOTEL,台北婚宴,飯店優惠,住宿,訂房,HOTEL,飯店,婚宴,台北住宿,國內訂房,台北HOTEL,台北婚宴,飯店優惠,住宿,訂房,HOTEL,飯店,婚宴,台北住宿,國內訂房,台北HOTEL,台北婚宴,飯店優惠,住宿,訂房,HOTEL,飯店,婚宴,結婚,婚宴場地,推車飲茶,港式點心,尾牙春酒,台北結婚,婚宴場地,推車飲茶,港式點心,尾牙春酒,結婚,婚宴場地,推車飲茶,港式點心,尾牙春酒,台北結婚,婚宴場地,推車飲茶,港式點心,尾牙春酒,結婚,婚宴場地,推車飲茶,港式點心,尾牙春酒,台北結婚,婚宴場地,推車飲茶,港式點心,尾牙春酒,居酒屋,燒烤,美髮,儀器,髮型,美髮,儀器,髮型,美髮,儀器,髮型,美髮,儀器,髮型,小套房,小套房,進修,在職進修,留學,證照,MBA,EMBA,留學,MBA,EMBA,留學,進修,在職進修,牛樟芝,段木,牛樟菇,住宿,民宿,飯宿,旅遊,住宿,民宿,飯宿,旅遊,住宿,民宿,飯宿,旅遊,住宿,民宿,飯宿,旅遊,住宿,民宿,飯宿,旅遊,住宿,民宿,飯宿,旅遊,住宿,民宿,飯宿,旅遊,美容,美髮,整形,造型,美容,美髮,整形,造型,美容,美髮,整形,造型,美容,美髮,整形,造型,美容,美髮,整形,造型,美容,美髮,整形,造型,美容,美髮,整形,造型,設計,室內設計,裝潢,房地產,設計,室內設計,裝潢,房地產,設計,室內設計,裝潢,房地產,設計,室內設計,裝潢,房地產,設計,室內設計,裝潢,房地產,設計,室內設計,裝潢,房地產,設計,室內設計,裝潢,房地產,設計,室內設計,裝潢,房地產,進修,在職進修,MBA,EMBA,進修,在職進修,MBA,EMBA,進修,在職進修,MBA,EMBA,進修,在職進修,MBA,EMBA,進修,在職進修,MBA,EMBA,進修,在職進修,MBA,EMBA,進修,在職進修,MBA,EMBA,住宿,民宿,飯店,旅遊,美容,美髮,整形,造型,設計,室內設計,裝潢,房地產,進修,在職進修,MBA,EMBA,關鍵字排名,網路行銷,关键词排名,网络营销,網路行銷,關鍵字排名,关键词排名,网络营销,羅志祥,周杰倫,五月天,蔡依林,林志玲,羅志祥,周杰倫,五月天,蔡依林,林志玲,PMP,在職專班,研究所在職專班,碩士在職專班,PMP,證照,在職專班,研究所在職專班,碩士在職專班,網頁設計,網站設計,網頁設計,網站設計,网页设计,网站设计,网站设计,网页设计

gooleo said...

牙醫,植牙,假牙|矯正|牙周病,牙醫診所植牙,紋身,刺青,創業,批發,TATTOO,皮膚科,痘痘,雷射脈衝光除斑,洗包包|洗鞋子|清洗包包,中醫,腫瘤,腎臟病,僵直性脊椎炎,飛梭雷射,肉毒桿菌,玻尿酸,痘痘,脈衝光,醫美,毛孔粗大,醫學美容,seo,關鍵字行銷,關鍵字自然排序,網路行銷,關鍵字自然排序,關鍵字行銷seo,關鍵字廣告,網路行銷,seo,關鍵字行銷,關鍵字廣告,關鍵字,自然排序,部落格行銷,網路行銷,網路爆紅

Talia.float said...

head junior tennis racketwilson tennis racquet
wilson tennis racket
head tennis racketbabolat tennis racket

Talia.float said...

Bought the Tennis Racquet is important, exercise can reduce the harm, especially for the wrist injury. But the good of Tennis Racket in general in the real prices are more expensive, so a lot of websites now have cheap tennis racquettennis racquet discountcheap tennis racketdiscount Tennis Racket .

raul said...

hgkhk I like your blog. Thank you. They are really great . Ermunterung ++ .
Some new style Puma Speed is in fashion this year.
chaussure puma is Puma shoes in french . Many Franzose like seach “chaussure sport” by the internet when they need buy the Puma Shoes Or nike max shoes. The information age is really convenient .
By the way ,the nike max ltd is really good NIKE air shoes ,don’t forget buy the puma mens shoes and nike air max ltd by the internet when you need them . Do you know Nike Air Shoes is a best Air Shoes . another kinds of Nike shoes is better . For example , Nike Air Rift is good and Cheap Nike Shoes .the nike shox shoes is fitting to running.
Spring is coming, Do you think this season is not for Ugg Boots? maybe yes .but this season is best time that can buy the cheap ugg boots. Many sellers are selling discounted. Do not miss . Please view my fc2 blog and hair straighteners blog.
.thank you .

I like orange converse shoes ,I like to buy the cheap converse shoes by the internet shop . the puma shoes and the adidas shoes (or addidas shoes) are more on internet shop .i can buy the cheap nike shoes and cheap puma shoes online. It’s really convenient.
Many persons more like Puma basket shoes than nike air rift shoes . the Puma Cat shoes is a kind of Cheap Puma Shoes .
If you want to buy the Cheap Nike Air shoes ,you can buy them online. They are same as the Nike Air shoes authorized shop. Very high-caliber Air shoes and puma cat shoes . the cheap puma shoes as same as other.

miyuki said...

Fantastic!God bless you!Meanwhile,you can visit my China Wholesale,we have the highest quality but the lowest price fashion products wholesale from China.Here are the most popular China Wholesale productsfor all of you.You can visit http://chinaclothes.net.Also the polo clothing is a great choice for you.God bless you!I really agree with your opinions.Also,there are some new fashion things here,gillette razor blades.gillette mach3 razor bladesfor men.As for ladies,gillette venus razor blades must the best gift for you in summer,gillette fusion blades are all the best choice for you.

miyuki said...

Cheap Brand Jeans ShopMen Jeans - True Religion Jeans, Women JeansGUCCI Jeans, Levi's Jeans, D&G Jeans, RED MONKEY Jeans, Cheap JeansArmani Jeans, Diesel Jeans, Ed hardy Jeans, Evisu Jeans, Jack&Jones Jeans...Bon March¨¦Chaussure PumaChaussure Sports Shop:baskets pumaChaussure Puma Femme,Chaussure Puma Homme,Chaussure Nike Femme,Chaussure Nike homme,nike shoxChaussure Sport et plus. Livraison Rapide.

miyuki said...

Lacoste Polo Shirts, ralph Lauren polo shirts , Burberry Polo Shirts.wholesale Lacoste polo shirts and polo ralph laurenwith great price. clothingol.com offers lot of 10 lacoste polo shirts and lot of 20 cheap polo shirts. clothingol.com offers classic fit polo shirts. polo clothing

miyuki said...

Charlestoncheap columbia jackets. turned a pair of double plays to do the trick. spyder jacketsThe had at least one runner on in every inning but the first and outhit the RiverDogs by a 12-6 margin Lawal should be a focal point of the Yellow cheap polo shirts along with highly touted newcomer, 6-9 Derrick Favors, rated as the No. 1 power forward on the ESPNU 100. The Yellow Jackets

miyuki said...

A study last yearnike tn, the author in the essay read NIKE , a reporter at the Shanghai headquarters in an interview, nike chaussuressee a pr in high school to read a league plans, employees interviewed told reporters in Beijing's streets, they children to interview, the children said, "truly understand them." tn chaussures These words, if the author touches product function, brand spirit and culture is to become part of the consumer of two basic methods

伊凡姐姐 said...

酒店喝酒

酒店消費

喝花酒

粉味

暑假打工

寒假打工

酒店經紀人

酒店現領

禮服店

酒店pt

酒店兼職

台北酒店上班

酒店兼差

台北禮服店

酒店上班

酒店打工

台北酒店小姐

酒店經紀





台北酒店經紀

酒店經紀公司

打工兼職

打工兼差

酒店行政

酒店資訊

酒店藝名

台北酒店

酒店日保

Peejay Li said...

I would like to be the supporter of yours. Thank you for sharing such a nice article.
chaussures puma
puma speed cat
Nike Tn Chaussures
requin tn
nike shox
puma shoes
puma CAT
puma basket
puma speed
baskets puma
puma sport
puma femmes
puma shox r4 torch
nike air max requin
nike shox r3
shox rival r3
tn plus
chaussures shox
nike shox r4 torch
air max tn requin
nike tn femme
pas cher nike
tn chaussures
nike rift
nike shox nz
chaussures shox
nike shox rival
shox rival
chaussures requin
jeans online
cheap armani jeans
cheap G-star jeans

lucyliu said...

nike air max 90
nike air max 95
nike air max tn
nike air rift
nike shox r4
nike air max 360
nike shox nz
puma mens shoes
puma shoes
puma speed
nike shoes
nike air
nike air shoes
puma cat
air max trainers
mens nike air max
nike shoes air max
nike shoes shox
air shoes
nike shoe cart
puma future
cheap puma
sports shoes
nike air rifts
nike air rift trainer
nike air
nike rift
nike rift shoes
cheap nike air rifts
bape shoes
jeans shop
diesel jeans
levis jeans

theprophet said...

sneakers shoes She continued,
"Why...? Don't you need someone to pose as your girlfriend this year?" Then he answered, "No, there is no need for that anymore......"
Before he can continue, he was interrupted, discount nike shoes"Oh yes! Must have found a girlfriend! nike shox r4 You haven't been searching for one for the past years, right?" The man looked up, as if he has struck gold, his face beamed and looked directly at the drunken girl. tn dollarHe replied, "Yes......you are right! I haven't been looking for anyone for the past years."
With that, the man darted across the floor and out the door, cheap nike shoesleaving the lady in much bewilderment. He finally realized that he has already found his dream girl, and she was.....the Vancouver girl all along! The drunken lady has said something that awoken him.
All along he has found his girl.nike tennis shoes That was why he did not bother to look further when he realized she was not coming back. It was not any specific girl he was seeking! cheap nike shoxIt was perfection that he wanted, and yes.....perfection!!
Relationship is something both parties should work on. Realizing that he had let away someone so important in his life, he decided to call her immediately. His whole mind was flooded with fear.free shipping shoes He was afraid that she might have found someone new or no longer had the same feelings anymore..... For once, he felt the fear of losing someone.
As it was Christmas eve, the line was quite hard to get through, especially an overseas call. He tried again and again, never giving up. Finally, he got through......precisely at 1200 midnight. He confessed his love for her and the girl was moved to tears. nike shoes It seemed that she never got over him! Even after so long, she was still waiting for him, never giving up.
He was so excited to meet her and to begin his new chapter of their lives. He decided to fly to Vancouver to join her. It was the happiest time of their lives! nike discount shoes But their happy time was short-lived. Two days before he was supposed to fly to Vancouver,cheap puma shoes he received a call from her father. She had a head-on car collision with a drunken driver. nike shox shoes She passed away after 6 hours in a coma.
The guy was devastated, as it was a complete loss. Why did fate played such cruel games with him? He cursed the heaven for taking her away from him, denying even one last look at her! How cruel he cursed! How he damned the Gods...!!nike free shoes How he hated himself....for taking so long to realize his mistake!! That was in 1996.
The moral of this story is :
Treasure what you have...
Time is too slow for those who wait;
Too swift for those who fear;
Too long for those who grief;
Too short for those who rejoice;
But for those who love...
Time is Eternity.
For all you out there with someone special in your heart, cherish that person, cherish every moment that you spend together that special someone, for in life, anything can happen anytime. buy shoes onlineYou may painfully regret, only to realise that it is too late.

Nguyen Manh said...

池袋 風俗
渋谷 風俗
新宿 風俗
アダルトDVD
av 写真
大人のオモチャ
アダルトショップ
ペニス増大
電マ
TENGA
SM 通販
男性セクシー下着
メンズ下着
Tバック下着
大規模修繕
決済代行
SEO
SEO
fether felt flat
決済代行
FXとは
クレジットカード 申込
子猫
子犬
仔猫
アダルトショップ
アダルトグッツ
ゴールドカード審査
ダッチワイフ

xhy said...

I like your blog. Thank you. They are really great .
Some new style Puma Cat shoes is in fashion this year.
The Nike Air Shoes is a best Air Shoes .
Nike Air Rift is good and Cheap Nike Shoes.
If you are a fans of Puma basket,we would offer the good and Cheap Puma Shoes for you .the cheap ugg bootsis best christmas gift now.
The information age is really convenient .

LAN said...

puma mens shoes
puma shoes
puma speed
nike shoes
nike air
nike air shoes
nike air max 90
nike air max 95
nike air max tn
nike air rift
nike shox r4
nike air max 360
nike shox nz
puma cat
air max trainers
mens nike air max
sports shoes
nike air rifts
nike air rift trainer
nike air
nike shoes air max
nike shoes shox
air shoes
nike shoe cart
puma future
cheap puma
nike rift
jeans shop
diesel jeans
levis jeans
nike rift shoes
cheap nike air rifts
bape shoes

Nike shox clearance said...

Pretty good post. I just stumbled upon your blog and wanted to say that I have really enjoyed reading your blog posts.Any way Ill be subscribing to your feed and I hope you post again soon.

Our company provides Nike Shox Clearance rapid and safe, free shipping network marketing.

李小 said...

Must i believeCheap RS Gold the primary idiom has its location? Sure. It provides pertaining to composable synchronization, that's critical if you want to decouple the Buy Guild wars 2 Goldsynchronization from the call-stack

Dagdgsd Dffbd said...

Nice article, thanks for the information. It's very complete information. I will bookmark for next reference
jaring futsal | jaring golf | jaring pengaman proyek |
jaring pengaman bangunan | jaring pengaman gedung
http://www.jual-jaring.blogspot.com/
http://www.agen-jaring.blogspot.com/
http://www.pancasamudera-safetynet.blogspot.com/
http://www.toko-jaring.blogspot.com/
http://www.pusat-jaring.blogspot.com/
http://jualjaringpengaman.blogspot.com/
https://pancasamudera.wordpress.com/
https://pasangjaringfutsal.wordpress.com/
https://jualtambangmurah.wordpress.com/
https://tokojaring.wordpress.com/
https://jualjaringfutsal.wordpress.com/
https://jaringfutsal.wordpress.com/