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Tree [eb790e] marshmallow-x86 android-x86-6.0-r1 android-x86-6.0-r2 android-x86-6.0-r3 / perfprofd / tests / History
| File | Date | Author | Commit |
|---|---|---|---|
| Android.mk | 2015-05-07 |
Dehao Chen
|
[5c4156] Add sequence number to encoded perf.data file. |
| README.txt | 2015-03-05 |
Than McIntosh
|
[7e2f4e] Perf profile collection daemon. |
| canned.perf.data | 2015-03-05 |
Than McIntosh
|
[7e2f4e] Perf profile collection daemon. |
| perfprofd_test.cc | 2015-05-21 |
Than McIntosh
|
[14d9b4] Perfprofd: various changes related to config pa... |
| perfprofdmockutils.cc | 2015-04-17 |
Than McIntosh
|
[07f00f] Second round of changes to 'perf' profile colle... |
| perfprofdmockutils.h | 2015-03-05 |
Than McIntosh
|
[7e2f4e] Perf profile collection daemon. |
Read Me
Native tests for 'perfprofd'. Please run with 'runtest perfprofd' (a.k.a. "$ANDROID_BUILD_TOP"/development/testrunner/runtest.py). Notes: 1. One of the testpoints in this test suite performs a live 'perf' run on the device; before invoking the test be sure that 'perf' has been built and installed on the device in /system/bin/perf 2. The daemon under test, perfprofd, is broken into a main function, a "core" library, and a "utils library. Picture: +-----------+ perfprofdmain.o | perfprofd | | main() | 1-liner; calls perfprofd_main() +-----------+ | v +-----------+ perfprofdcore.a | perfprofd | | core | most of the interesting code is here; | | calls into utils library when for +-----------+ operations such as sleep, log, etc | v +-----------+ perfprofdutils.a | perfprofd | | utils | real implementations of perfprofd_sleep, | | perfprofd_log_* etc +-----------+ Because the daemon tends to spend a lot of time sleeping/waiting, it is impractical to try to test it directly. Instead we insert a mock utilities layer and then have a test driver that invokes the daemon main function. Picture for perfprofd_test: +----------------+ perfprofd_test.cc | perfprofd_test | | | makes calls into perfprofd_main(), +----------------+ then verifies behavior | v +-----------+ perfprofdcore.a | perfprofd | | core | same as above +-----------+ | v +-----------+ perfprofdmockutils.a | perfprofd | | mockutils | mock implementations of perfprofd_sleep, | | perfprofd_log_* etc +-----------+ The mockup versions of perfprofd_sleep() and perfprofd_log_* do simply log the fact that they are called; the test driver can then examine the log to make sure that the daemon is doing what it is supposed to be doing.
