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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 ...
I want to delete all bin and obj folders to force all projects to rebuild everything
...d for me:
for /d /r . %%d in (bin,obj) do @if exist "%%d" rd /s/q "%%d"
Based on this answer on superuser.com
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Execution time of C program
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MinGW compiler is GCC based. So it will work on it. But if you use visual C compiler, then you will get error.
– user2550754
Jan 9 '14 at 11:37
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What is :: (double colon) in Python when subscripting sequences?
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164
Python sequence slice addresses can be written as a[start:end:step] and any of start, stop or e...
PostgreSQL - Rename database
I need to rename the database but when I do in
PGAdmin : ALTER DATABASE "databaseName" RENAME TO "databaseNameOld" it told me that it cannot.
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How do I download a tarball from GitHub using cURL?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Counter increment in Bash loop not working
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count=0
base=1
(( count += base ))
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Where can I get a list of Ansible pre-defined variables?
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"sectors": "497664",
"sectorsize": 512,
"...
How do you crash a JVM?
...roaching the 4 Gb memory limit under the 32-bit versions (we generally use 64-bit now).
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How do I get PyLint to recognize numpy members?
... This helped! on VSCode 1.12.2 confirmed it works on WIndows 10 x64.
– Simara
May 22 '17 at 18:18
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