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How efficient is locking an unlocked mutex? What is the cost of a mutex?
...mutexes or a single one for an object.
If you have many threads and the access to the object happens often, then multiple locks would increase parallelism. At the cost of maintainability, since more locking means more debugging of the locking.
How efficient is it to lock a mutex? I.e. how much...
PostgreSQL - fetch the row which has the Max value for a column
...:05
Eric
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answered Jan 18 '13 at 0:04
burak emreb...
Why is processing a sorted array faster than processing an unsorted array?
...lroad junction:
Image by Mecanismo, via Wikimedia Commons. Used under the CC-By-SA 3.0 license.
Now for the sake of argument, suppose this is back in the 1800s - before long distance or radio communication.
You are the operator of a junction and you hear a train coming. You have no idea which way i...
TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...LSF源码及算法介绍tlsf-two-level-segregated-fit官网地址：http: www gii upv es tlsf 官网的代码应该是主分支，github上的几个仓库更新不是那么及时。英文好的同学请直接看论文《TLSF: a New Dynamic Memory Allocator f 官网地址：http://www.gii.upv.es/t...
How many bytes does one Unicode character take?
... ‰
Nº: 8240
UTF-8: E2 80 B0
UTF-16: 20 30
U+20AC EURO SIGN: €
Nº: 8364
UTF-8: E2 82 AC
UTF-16: 20 AC
U+2122 TRADE MARK SIGN: ™
Nº: 8482
UTF-8: E2 84 A2
UTF-16: 21 22
U+2603 SNOWMAN: ☃
Nº: 9731
UTF-8: E2 98 83
UTF-16: 26 03
U+260E BLACK TELEPHONE: ☎
Nº: 9742
UTF-8: E2 98 8E
UT...
What is a difference between
...4
Yishai
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answered Sep 2 '09 at 14:54
Jon SkeetJo...
Difference between natural join and inner join
...
83
An inner join is one where the matching row in the joined table is required for a row from the...
Multiple glibc libraries on a single host
...14 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
+#include <stdio.h>
+
#include "thrd_priv.h"
int
thrd_create (thrd_t *thr, thrd_start_t func, void *arg)
{
+ puts("hacked");
_Static_assert (sizeof (thr) == sizeof (pthread_t),
...
How to work around the lack of transactions in MongoDB?
...
83
Living Without Transactions
Transactions support ACID properties but although there are no tra...
What is the difference between Strategy design pattern and State design pattern?
...
YishaiYishai
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...