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A recent study of concurrent packages in JDK has been divided into three parts, thread management, lock operations, and atomic operations. Thread management is usually used more
The FreeRTOS semaphore includes a binary semaphore, a count semaphore, a mutex (hereafter referred to as a mutex), and a recursive mutex (hereafter referred to as a recursive mutex). The difference between them can be referred to in the article "
Today continue to explore the signal-related east, not much to say, is into the subject:The signal is represented in the kernel:The following diagram is used to further describe the state of the signal from generation to delivery (signal blocking
Inter-process communication in Linux environment (2): Signal (lower)
I. Signal Lifecycle
The signal is sent to the signal processing function after execution.
For a complete signal Life Cycle (after the signal is sent to the corresponding processing
First of all thank you Liao brother this friend to me last night wrote a "talk about the signal mechanism of Linux (a)", before the topic I used the word "analysis", give a person to analyze the feeling of the kernel. I know the skill is not enough,
One. Thread synchronization
1.posix Signal Volume:
With System V IPC Semaphore (Semget ...) Very similar, but not guaranteed to be interchangeable.
#include
Initialization function: Sem_init (sem_t * __sem,int __pshared,unsigned int
Edup8188cus can be used for free in Linux, and it is convenient to build a WiFi hotspot for network testing.HOSTAPD is a hot-spot simulator running in user space that is easy to debug and record access logs, and WiFi debugging is quite
*_at methods These methods are above a streamdo random access operations. You can specify where the read and write operations start (offset):Async_read_at (stream, offset, buffer [, completion], handler): This method executes an asynchronous read
Linux under C Development of thread communication (RPM)1.Linux "Threads"There is a difference between a process and a thread, but the Linux kernel provides only lightweight process support and does not implement a threading model. Linux is a
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