test_common constructs a few 2GiB strings in memory, which leads to huge
memory footprint (18GiB). This CL moves away from in-memory strings to
generators, which reduces the memory use down to 41MiB. It also reduces
the time cost from 294s to 139s as an extra benefit for free.
The CL addresses some trivial pylint warnings as well.
* Before
$ /usr/bin/time -v python -m unittest -v test_common
...
----------------------------------------------------------------------
Ran 11 tests in 294.986s
OK
Command being timed: "python -m unittest -v test_common"
User time (seconds): 110.51
System time (seconds): 109.34
Percent of CPU this job got: 74%
Elapsed (wall clock) time (h:mm:ss or m:ss): 4:55.06
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 18894172
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 1
Minor (reclaiming a frame) page faults: 20774908
Voluntary context switches: 48
Involuntary context switches: 3241
Swaps: 0
File system inputs: 184
File system outputs: 8406424
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0
* After
$ /usr/bin/time -v python -m unittest -v test_common
...
----------------------------------------------------------------------
Ran 11 tests in 139.100s
OK
Command being timed: "python -m unittest -v test_common"
User time (seconds): 59.00
System time (seconds): 4.73
Percent of CPU this job got: 45%
Elapsed (wall clock) time (h:mm:ss or m:ss): 2:19.17
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 41252
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 0
Minor (reclaiming a frame) page faults: 106569
Voluntary context switches: 44
Involuntary context switches: 103
Swaps: 0
File system inputs: 8
File system outputs: 8422808
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0
Fixes: 68988396
Test: See above.
Change-Id: I00f16603a4ee59fb085b189c6f5b5ee9d2378690
imgdiff fails on plain strings after we put more checks the input
data. This leads to failure when running unittest
"test_recovery_from_boot". The CL fixes the issue by serving gzipped
dummy images as the test input.
Bug: 68988329
Test: InstallRecoveryScriptFormatTest passes
Change-Id: I1952b311681ac4f39c0e51aef1de1177aebeac43
Check the SHA1 of recovery.img and boot.img embedded in the
install-recovery.sh.
Bug: 35411009
Test: validation script detects mismatch for both full recovery and
recovery-from-boot.
Change-Id: I5f07a869d9fa17fad26a22ef9ca3ecb06b1b28e3
When passing a ZipInfo instance to common.ZipWriteStr(), the
external_attr attribute should not be overwritten unless specified.
We didn't have the issue previously because we were calling
ZipFile.writestr() directly until [1] merged.
[1] commit 2ed665a033.
Bug: http://b/21309935
Change-Id: I8c0190362c60d7d78965ecfe5e484f8398ddc5f2
(cherry picked from commit 9773465409)
In order to work around the zip 2GiB limit, we need to wrap the related
functions in zipfile. Calls to those functions should always be replaced
with calls to the wrappers instead.
Bug: 18015246
Change-Id: I499574cee51ec4804bc10cbefe0b17940afed918
(cherry picked from commit 2ed665a033)
Python 2.7's zipfile implementation wrongly thinks that zip64 is
required for files larger than 2GiB. We can work around this by
adjusting their limit. Note that `zipfile.writestr()` will not work
for strings larger than 2GiB. The Python interpreter sometimes rejects
strings that large (though it isn't clear to me exactly what
circumstances cause this). `zipfile.write()` must be used directly to
work around this.
This mess can be avoided if we port to python3.
The bug (b/19364241) in original commit has been fixed.
Bug: 18015246
Bug: 19364241
Bug: 19839468
(cherry picked from commit cd082d4bfe)
Change-Id: I7b5cc310e0a9ba894533b53cb998afd5ce96d8c6
