commit | 2505fa75bd9181891b2a954e6299c97b750ba4ed | [log] [tgz] |
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author | Derek Bruening <bruening@google.com> | Thu Mar 19 14:43:49 2020 |
committer | GitHub <noreply@github.com> | Thu Mar 19 14:43:49 2020 |
tree | 6925209353201eb455d83505b5a9cdebb0d48272 | |
parent | 6b3931ac9b902611f186f85ef3bf9d3c9fff3fb1 [diff] |
i#4187 sym perf: Add -record_dynsym_only to drcachesim (#4196) Adds a new option -record_dynsym_only to drcachesim which causes -record_function and -record_heap to only look in .dynsym, avoiding drsyms and the main symbol table entirely. This is to avoid overhead issues with two scenarios: very large applications with millions of symbol table entries, and applications with thousands of libraries where setting up and tearing down drsyms and DWARF information adds up across all of those libraries. Quite often the target functions to trace are in .dynsym, making this a reasonable solution. Tested manually on both scenarios. Issue: #4187
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.
Tools built on DynamoRIO and provided in our release package include:
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.
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.
Use the discussion list to ask questions.
To report a bug, use the issue tracker.
See also the DynamoRIO home page: http://dynamorio.org/