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LinuxThreads : ウィキペディア英語版
LinuxThreads

In the Linux operating system, LinuxThreads was a partial implementation of POSIX Threads. It has since been superseded by the Native POSIX Thread Library (NPTL). The main developer of LinuxThreads was Xavier Leroy.
LinuxThreads had a number of problems, mainly owing to the implementation, which used the clone system call to create a new process sharing the parent's address space. For example, threads had distinct process identifiers, causing problems for signal handling; LinuxThreads used the signals SIGUSR1 and SIGUSR2 for inter-thread coordination, meaning these signals could not be used by programs.
To improve the situation, two competing projects were started to develop a replacement; NGPT (Next Generation POSIX Threads) and NPTL. NPTL won out and is today shipped with the vast majority of Linux systems. , LinuxThreads may still be seen on production systems, particularly those using version 2.4 or lower of the Linux kernel, as NPTL requires facilities which were specifically added into the 2.6 version of the kernel for its use.
LinuxThreads was also ported to and used on FreeBSD.〔LinuxThreads on FreeBSD ()〕
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「LinuxThreads」の詳細全文を読む



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