kc3-lang/angle/util/posix

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  Commit

• Hash : 67eb2605
  Author :
  Date : 2020-11-12T17:16:05
  

  Faster stack traces on Linux
  
  Previously addr2line was called for every symbol separately.  This was
  glacially slow as every module's debug info was repeatedly reloaded.
  With this change, contiguous symbols from the same module are batched
  together and one call to addr2line is done.
  
  Potential future optimization is to batch every symbol from the same
  module, but capture the output of addr2line calls and interleave them to
  match the stack.  For example, currently 4 calls to addr2line are made
  for the following stack trace:
  
      moduleA(+addr1)
      moduleA(+addr2)
      moduleB(+addr3)
      moduleB(+addr4)
      moduleA(+addr5)
      moduleA(+addr6)
      moduleB(+addr7)
      moduleB(+addr8)
  
  while technically only two calls are necessary.
  
  Bug: angleproject:5239
  Change-Id: I58742b85409b0b74bb87272bc63e251a2d0fe0e5
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2535682
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  

• Files

• crash_handler_posix.cpp
• test_utils_posix.cpp

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