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OPEN SOURCE SUMMIT NORTH AMERICA 2017

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Open Source Summit Open Source Summit is an open source technical conference in North America, gathering 2,000+ developers, operators and community leadership professionals to collaborate, share information and learn about the latest in open source technologies, including Linux, containers, cloud computing and more. At the Open Source Summit, you can expect to collaborate, share information and learn across a wide variety of topics like LinuxCon, ContainerCon, CloudOpen. read more http://events.linuxfoundation.org/events/open-source-summit-north-america/program/about SPEAKER IN OPEN SOURCE SUMMIT CONFERENCE   My last week was the best  week  than any other. Last week it was a great happened in Open Source Summit North America 2017 .   I was a speaker at the conference.  radix-tree-idr-apis-and-their-test-suite  I presented "Implementing IDR in file descriptor allocation code path". My  project deals with converting custom file descr
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Threaded test case for radix tree __alloc_fd

The purpose of this test cases is to stress the locking inside the kernel. All threads share a common file descriptor table. As each thread opens and closes its file descriptors, it must ensure that other threads do not interfere. So if we have many threads running, simultaneously opening and closing file descriptors, we’re trying to provoke a crash, or a corruption, or some other bad behavior by the kernel. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 #include <stdio.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <errno.h> #include <pthread.h> #define NUM_THREADS 12 #define BUF_SIZE 1024 void * fd_task(void * arg) { int fd, err = 0 ; int ret; char buf[BUF_SIZE]; fd = open ( “ / etc / passwd ” ,O_RDONLY); if (fd == - 1 ) { printf( “ open failed … \n ” ); } ret = read(fd, buf, 1024
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Test cases of dup2() for radix tree__alloc_fd

I have written a test case of dup2() This is dup2() functionality test case. The dup2() makes newfd be the copy of oldfd, closing newfd first if necessary. This test case covers below scenarios   * Provide invalid file descriptor to dup2()   * Fill up all file descriptor table and try to duplicate a file descriptor using dup2().   * Using dup2() duplicate both file descriptor return by the pipe.   * Check inode number after passing newfd and oldfd to fstat(). inode number should be same. Upon successful execution this program will return zero value, otherwise, it will return -1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97
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