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learning-systems's Introduction

  1. learning system calls.
  2. making C katas for them.
  3. make a toy shared buffer

Ideas

  1. copy a file using system calls
  2. copy a file using standard I/O
  3. saul: do a simple perf test between different hand implementations of file copy
  4. ask saul for help for a kata that needs locks

Next for copy-file.c

  1. Try with a file that is 100x larger
  2. It will crash, fix that
  3. Then increase BUF_LEN to block size
  4. Write write() portion of copy-file

concepts to learn

  • memmap
  • block sizes for performance
  • error handling
  • multiplexed I/O
    • locking
    • polling for available fd
  • flushing
  • seeking in memory for writing

Tools

  • valgrind
  • gcc
  • gdb
  • make

learning-systems's People

Contributors

anjakefala avatar saulpw avatar

Watchers

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