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Asynchronous vs Multithreading - Is there a difference?
... to other work while the I/O hardware (disk controller, network interface, etc.) does the I/O work. The hardware lets the CPU know when it's finished by interrupting the CPU, and the OS then delivers the event to your application.
Frequently higher-level abstractions and APIs don't expose the unde...
BLE协议—广播和扫描 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...用扫描和广播进行数据的传输（数据量不大，功耗要求较高的情况下），也可以在广播和扫描的基础上进行连接后点对点通信。
BLE协议—广播和扫描
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载...
How to configure Git post commit hook
...
I saw two possible solutions:
1: Changing my hook to:
curl --user name:passwd -s http://domain?token=whatevertokenuhave
2: setting project based authorization.
The former solutions has the disadvantage that I had to expose my passwd in the hook file. Unacceptable in my case.
The second works...
How to determine CPU and memory consumption from inside a process?
...
#include "psapi.h"
PROCESS_MEMORY_COUNTERS_EX pmc;
GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc));
SIZE_T virtualMemUsedByMe = pmc.PrivateUsage;
Total Physical Memory (RAM):
Same code as in "Total Virtual Memory" and then
DWORDLONG totalPhysMem =...
How to get current CPU and RAM usage in Python?
...d way of getting current system status (current CPU, RAM, free disk space, etc.) in Python? Bonus points for *nix and Windows platforms.
...
What is “overhead”?
...are much faster than cars, but the overhead of airport check-in, security, etc. makes cars a better option for shorter distances.
– FogleBird
May 18 '10 at 19:27
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How do I monitor the computer's CPU, memory, and disk usage in Java?
...Network Interface info and metrics, Process Table information, Route info, etc.
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InputStream from a URL
...ll
private InputStream getInputStreamFromUrl(URL url, String user, String passwd) throws IOException {
String encoded = Base64.getEncoder().encodeToString((user + ":" + passwd).getBytes(StandardCharsets.UTF_8));
Map<String,String> httpHeaders=new Map<>();
httpHea...
Why do x86-64 systems have only a 48 bit virtual address space?
...e IBM PC designated a section of that for memory mapped peripherals, BIOS, etc. Some other 8088/8086 designs (Zenith Z100, if memory serves) designated less for peripherals and such, and correspondingly more for application programs.
– Jerry Coffin
Jul 16 '11 a...
What do the terms “CPU bound” and “I/O bound” mean?
...cked by I/O, or input/output, such as reading or writing to disk, network, etc.
In general, when optimizing computer programs, one tries to seek out the bottleneck and eliminate it. Knowing that your program is CPU bound helps, so that one doesn't unnecessarily optimize something else.
[And by "b...