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How efficient is locking an unlocked mutex? What is the cost of a mutex?
...is:
This shows the result of benchmark runs on the following code:
uint64_t do_Ndec(int thread, int loop_count)
{
uint64_t start;
uint64_t end;
int __d0;
asm volatile ("rdtsc\n\tshl $32, %%rdx\n\tor %%rdx, %0" : "=a" (start) : : "%rdx");
mutex.lock();
mutex.unlock();
asm volatile ...
Multiple variables in a 'with' statement?
...red Jun 20 '18 at 23:32
nyanpasu64nyanpasu64
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Get Folder Size from Windows Command Line
... JoeyJoey
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Preferred order of writing latitude & longitude tuples in GIS services
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Brandon Rhodes
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answered Sep 5 '11 at 15:17
Jiri KrizJiri...
How big can a user agent string get?
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Depending on web-server and their settings these limits vary from 4KB to 64KB (total for all headers).
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what is faster: in_array or isset? [closed]
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Jason McCrearyJason McCreary
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Does a favicon have to be 32x32 or 16x16?
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philippe_bphilippe_b
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How do I run Redis on Windows?
... You'll be happy to try this one. It works (on my Windows 2008 R2 64bit server at least). Takes you 5 minutes.
– Christiaan Westerbeek
May 25 '14 at 9:23
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Incompatible implicit declaration of built-in function ‘malloc’
...318 Not necessarily, which is precisely the reason for the warning. Ex: a x64 platform with 64-bit data pointers and 32-bit int values will puke goat feces, while a x86 32bit-data-pointer/32bit-int can seemingly work correctly. Neither are correct, as in neither case is the compiler aware of what ma...
Need command line to start web browser using adb
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auselenauselen
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