Starting a process using file descriptors
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United States of America Patent
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Jan 9, 2018
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N/A
app pub date -
Sep 26, 2012
filing date -
Oct 12, 2011
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Abstract
According to an example, a method includes: before a first process exits, a kernel receives a connection holding request carrying a File Descriptor (FD) transmitted by the first process, with respect to the FD carried by the connection holding request, the kernel increases a reference count of a file object corresponding to the FD and puts the file object into a cache, the kernel returns cache position information to the first process, such that the first process puts a corresponding relationship between the cache position information and identifier information of a communication connection pointed to by the FD in a predefined storage area; when a second process starts, the kernel receives an FD obtaining request carrying the cache position information transmitted by the second process, reads the file object from the cache, assigns a new FD to the file object and returns the new FD to the second process.
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