| f629cfdbf6da3409aff177352e9ff41209b4570c |
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12-Dec-2016 |
Richard Uhler <ruhler@google.com> |
ahat: add support for diffing two heap dumps.
ahat now has the option to specify a --baseline hprof file to use as
the basis for comparing two heap dumps. When a baseline hprof file is
provided, ahat will highlight how the heap dump has changed relative
to the hprof file.
Differences that are highlighted include:
* overall heap sizes
* total bytes and number of allocations by type
* new and deleted instances of a given type
* retained sizes of objects
* instance fields, static fields, and array elements of modified objects
Also:
* Remove support for showing NativeAllocations, because I haven't ever
found it to be useful, it is not obvious what a "native" allocation
is, and I don't feel like adding diff support for them.
* Remove help page. Because it is outdated, not well maintained, and
not very helpful in the first place.
Test: m ahat-test
Test: Run in diff mode for tests and added new tests for diff.
Test: Manually run with and without diff mode on heap dumps from system server.
Bug: 33770653
Change-Id: Id9a392ac75588200e716bbc3edbae6e9cd97c26b
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| cda4f2e72f569e0a0d6119c1c75284fd44df79ab |
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09-Sep-2016 |
Richard Uhler <ruhler@google.com> |
Refactor ahat's perflib api.
This change substantially refactors how ahat accesses heap dump data.
Rather than use the perflib API directly with some additional
information accessed on the side via AhatSnapshot, we introduce an
entirely new API for accessing all the information we need from a heap
dump. Perflib is used when processing the heap dump to populate the
information initially, but afterwards all views and handlers go
through the new com.android.ahat.heapdump API.
The primary motivation for this change is to facilitate adding support
for diffing two heap dumps to ahat. The new API provides flexibility
that will make it easier to form links between objects in different
snapshots and introduce place holder objects to show when there is an
object in another snapshot that has no corresponding object in this
snapshot.
A large number of test cases were added to cover missing cases
discovered in the process of refactoring ahat's perflib API.
The external user-facing UI may have minor cosmetic changes, but
otherwise is unchanged.
Test: m ahat-test, with many new tests added.
Bug: 33770653
Change-Id: I1a6b05ea469ebbbac67d99129dd9faa457b4d17e
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| ec78c78508fa5ef6bac78ee2face0d30e67cf913 |
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13-May-2016 |
Richard Uhler <ruhler@google.com> |
Add support for proguard deobfuscation.
Test: m ahat-test, with obfuscation of test-dump.hprof added.
Bug: 25812772
Change-Id: I0f257432da570aa146e6bb5c549f014aecc0c326
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| 3524472e8f064dbd42e1a35d511a1efe36d2cbf2 |
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11-Sep-2015 |
Richard Uhler <ruhler@google.com> |
Generate an hprof file to test ahat.
This change sets up the infrastructure to write test cases for ahat
that make use of an hprof file automatically generated from a sample
program.
Change-Id: Id11f656afb69c96a26655cc4caeb745ad844f431
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