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chromium / external / github.com / DynamoRIO / dynamorio / refs/tags/cronbuild-7.0.17605
commitce3a9f40970cd53a8f29c00bbff38d5140673870[log] [tgz]
authorDerek Bruening <bruening@google.com>Thu Mar 15 22:02:26 2018
committerGitHub <noreply@github.com>Thu Mar 15 22:02:26 2018
tree1c27a732dd0f414aa670d77f23b317385a26f76f
parent3f2dd1d9c88d21e6487bad569ab013bdedc84faa [diff]
i#140 pcprof: add client pc sampling support (#2883)

Added dr_where_am_i() to better support client self-profiling via
sampling.  This also provides the fragment tag, by refactoring
the pcprofile code into a new helper fcache_refine_whereami().

Renamed the whereami types to better avoid name conflicts:
s/WHERE_xxx/DR_WHERE_xxx/ and s/where_am_i_t/dr_where_am_i_t/.
Exported the dr_where_am_i_t enum.

Fixed a bug where an uninitialized mcontext was passed to a
client timer callback: we only filled in the mcontext for a
DR-internal callback.

Added a test of client sampling to client.timer

Issue: #140
26 files changed
tree: 1c27a732dd0f414aa670d77f23b317385a26f76f
  1. api/
  2. clients/
  3. core/
  4. ext/
  5. libutil/
  6. make/
  7. suite/
  8. third_party/
  9. tools/
  10. .appveyor.yml
  11. .travis.yml
  12. ACKNOWLEDGEMENTS
  13. CMakeLists.txt
  14. CONTRIBUTING.md
  15. CTestConfig.cmake
  16. License.txt
  17. README
  18. README.md
README.md

DynamoRIO

DynamoRIO logo

About DynamoRIO

DynamoRIO is a runtime code manipulation system that supports code transformations on any part of a program, while it executes. DynamoRIO exports an interface for building dynamic tools for a wide variety of uses: program analysis and understanding, profiling, instrumentation, optimization, translation, etc. Unlike many dynamic tool systems, DynamoRIO is not limited to insertion of callouts/trampolines and allows arbitrary modifications to application instructions via a powerful IA-32/AMD64/ARM/AArch64 instruction manipulation library. DynamoRIO provides efficient, transparent, and comprehensive manipulation of unmodified applications running on stock operating systems (Windows, Linux, or Android) and commodity IA-32, AMD64, ARM, and AArch64 hardware. Mac OSX support is in progress.

Existing DynamoRIO-based tools

Tools built on DynamoRIO and provided in our release package include:

  • The memory debugging tool Dr. Memory
  • The multi-process cache simulator and memory address trace collection and analysis platform drcachesim
  • The legacy processor emulator drcpusim
  • The “strace for Windows” tool drstrace
  • The code coverage tool drcov
  • The library tracing tool drltrace
  • The memory tracing tool memtrace
  • The basic block tracing tool bbbuf
  • The instruction counting tool inscount

Building your own custom tools

DynamoRIO‘s powerful API abstracts away the details of the underlying infrastructure and allows the tool builder to concentrate on analyzing or modifying the application’s runtime code stream. API documentation is included in the release package and can also be browsed online. Slides from our past tutorials are also available.

Downloading DynamoRIO

DynamoRIO is available free of charge as a binary package for both Windows and Linux. DynamoRIO's source code is available under a BSD license.

Obtaining Help

Use the discussion list to ask questions.

To report a bug, use the issue tracker.

See also the DynamoRIO home page: http://dynamorio.org/