The gobind framework is supposed to use reference counting to
keep track of objects (e.g. pointer to a Go struct, interface
values) crossing the language boundary. This change fixes two bugs:
1) no reference counting on Java object: Previously, the lifetime
of a Java object was manages in the following way.
a. The Java object is pinned in an internal map (javaObjs) when it's
constructed.
b. When Go receives the reference to the Java object, it creates a
proxy object and sets a finalizer on it. The finalizer signals Java
to unpin the Java object (remove from the javaObjs map).
c. The javaObjs map is also used to identify the Java object when
Go asks to invoke a method on it later.
When the same Java object is sent to Java more than once, and the
finalizer (b) runs after the first use, the second use of the Java
object can cause the crash described in golang/go#10933.
This change fixes the bug by reference counting the Java object.
Java side pins the Java object and increments the refcount whenever it
sees the object sent to Go (in Seq.writeRef). When the Go proxy
object's finalizer runs, the refcount is decremented. When the refcount
becomes 0, the object gets unpined.
2) race in Go object lifetime management: Pinning on a Go object
has been done when the Go object is sent to Java but the Go object
is not in the pinned object map yet. (bind/seq.WriteGoRef).
Unpinning the object occurs when Java finds there are no proxy objects
on its side. For this, Java maintains a reference count map (goObjs).
When the refcount becomes zero, Java notifies Go so the object is
unpinned. Here is a race case:
a. Java has a proxy object for a Go object.
b. Go is preparing for sending the same Go object. seq.WriteGoRef
notices the corresponding entry in the pinned object map already,
and returns. The remaining work for sending the object continues.
c. The proxy object in Java finalizes and triggers deletion of the
object from the pinned object map.
d. The remaining work for (b) completes and Java creates a new proxy
object. When a method is called for the Go object, the Go object is
already removed from the object map on Go side and maybe already GC'd.
This change fixes it by converting the pinned object map to reference
counter map maintained in Go. The counter increments for each
seq.WriteGoRef call. The finalizer of the proxy object in Java causes
a decrement of the counter.
Fixesgolang/go#10933.
Renables the skipped testJavaRefGC.
Change-Id: I0992e002b1050b6183689e5ab821e058adbb420f
Reviewed-on: https://go-review.googlesource.com/10638
Reviewed-by: David Crawshaw <crawshaw@golang.org>
- Fix hangs on linux/x11. x11-related code remains outdated since
068a51c19, which seperates GL calls to dedicated thread. Update x11
code to work with GL thread.
- Fix bug on coordinate system. x11 has same coordinate system with
android, (0,0) on top-left.
Change-Id: I0b3ab97fd4842b1c9f730e1c90a5840f540fcb7a
Reviewed-on: https://go-review.googlesource.com/10623
Reviewed-by: David Crawshaw <crawshaw@golang.org>
All GL function calls fill out a C.struct_fnargs and drop it on the
work queue. The Start function drains the work queue and hands
over a batch of calls to C.process which runs them. This allows
multiple GL calls to be executed in a single cgo call.
A GL call is marked as blocking if it returns a value, or if it
takes a Go pointer. In this case the call will not return until
C.process sends a value on the retvalue channel.
Change-Id: I4c76b2a8ad55f57b0c98d200d0fb708d4634e042
Reviewed-on: https://go-review.googlesource.com/10452
Reviewed-by: Nigel Tao <nigeltao@golang.org>
After CL 10296 the workaround from CL 9783 is no longer necessary.
Revert the workaround but keep the global reference, just in case.
Change-Id: I3fdd580e4122c36508beb9d328739b910dbbe2e2
Reviewed-on: https://go-review.googlesource.com/10483
Reviewed-by: David Crawshaw <crawshaw@golang.org>
This ensures that the java bindings are ready before any calls are
made by user code. As a bonus, the JNIEnv* is from the Seq class so I
believe no tricks are required to find the right class loader.
Fixesgolang/go#10903.
Change-Id: I33b3b39cef6cc2da36e271de882ba8d26610ea34
Reviewed-on: https://go-review.googlesource.com/10296
Reviewed-by: Elias Naur <elias.naur@gmail.com>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Conflicts with cl/10396. I'll submit this first and update the it.
Change-Id: Ibc873b3fe896ecd2415a42676614807788a8d1c6
Reviewed-on: https://go-review.googlesource.com/10399
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
This trusts bionic's reading of the system clock.
Future work should address the fact we cannot read the Android
zoneinfo file.
Fixesgolang/go#10857.
Change-Id: I5a684fecc920dce5ab8f624658e91d9e2d71738d
Reviewed-on: https://go-review.googlesource.com/10299
Reviewed-by: Elias Naur <elias.naur@gmail.com>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
The user may have set GOBIN, in which case the existing go command is
overwritten. I cannot think of any relevant environment variables the
user would set, so the easiest thing is not to use them at all.
While here, fix the unit test I broke in cl/10319.
Change-Id: I8cef353b5a0e4aabae97169ff553b53f7973ff8b
Reviewed-on: https://go-review.googlesource.com/10397
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Change-Id: I574f9ea8ab8138c769be19df8b1e86a7fbe544a8
Reviewed-on: https://go-review.googlesource.com/9879
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Reviewed-by: Nigel Tao <nigeltao@golang.org>
This is the initial CL of a series to add iOS build support for
darwin/arm and darwin/arm64.
The builder utility is not invoked during $ gomobile build currently.
gomobile build will invoke goIOSBuild and codesign the generated
binary with assets available on the source directory to build an app
file. This app file might converted into an IPA as an ad-hoc
distribution archive.
darwin/arm and darwin/arm64 cross builders need to be built during
gomobile initialization step and tools need to be moved under
$GOROOT/pkg/gomobile/ios.
Change-Id: Ifb8d3c0f37611c78ca9c8887a367750fb98a546a
Reviewed-on: https://go-review.googlesource.com/10085
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
test.bash is a simple script that builds the c-shared library from
test_main.go, compiles SeqTest.m and the objective-c bindings of testpkg
(testpkg/objc_testpkg/GoTestpkg.*), and runs the output. Eventually this
will be replaced with coed that runs gomobile bind & xcodebuild.
The code under testpkg/go_testpkg and testpkg/objc_testpkg is the output
of gobind (now manually-generated). I am adding it to repo now in order
to get the testpkg/objc_tstpkg reviewed. Eventually, this will be
removed from the repo.
Change-Id: I8d6af3732337992af922cb4615a63f385e19d489
Reviewed-on: https://go-review.googlesource.com/9826
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Also fixes a parameter name handling problem when processing a
function signature that omits parameter names.
Fixesgolang/go#10788.
Change-Id: I65273d330bbf3a836ec9e4ffb691927970d795d8
Reviewed-on: https://go-review.googlesource.com/9926
Reviewed-by: Alan Donovan <adonovan@google.com>
The previous way (JNIEnv's FindClass with "[B") does not work
in Android-L for some reason.
Change-Id: I5cccb7bbf651df981a923ecade863302521d5c5c
Reviewed-on: https://go-review.googlesource.com/9783
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Change-Id: Ic7dad34ec242910540da4d6bae94f45907b3d0dd
Reviewed-on: https://go-review.googlesource.com/9898
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Fixesgolang/go#10760 maybe, I have been unable to reproduce it.
Change-Id: Iaeec631f5a6be29b312969df12f6bd6b95bc2aa1
Reviewed-on: https://go-review.googlesource.com/9880
Reviewed-by: Burcu Dogan <jbd@google.com>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Destroy sounds like C, we should use Close in Go.
Change-Id: I73da732300a955e458513f15ad898b7f34c8ed7c
Reviewed-on: https://go-review.googlesource.com/9875
Reviewed-by: Nigel Tao <nigeltao@golang.org>
PCM data may contain a header, we need to skip it and stream the
audio data to the underlying OpenAL player. Otherwise, we will play
the header bytes as well and the sound will click.
The future work will include auto detecting the number of channels,
the bitrate and the sample rate from the header.
Fixesgolang/go#10728
Change-Id: Ie09e4c59a08207838d0c8f4c5d4d0cb08deb27cd
Reviewed-on: https://go-review.googlesource.com/9860
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Instead of trying to preserve the unpacked NDK, this stores the
downloaded archives in GOPATH/pkg/gomobile/dl and completely
rebuilds on reinitialization.
Also introduce checking that the version of Go we are using to do
the build matches the GOROOT we are building from.
Fixesgolang/go#10187
Change-Id: I4a861718d8a413855917a5b1f1073e2cd84c9bb1
Reviewed-on: https://go-review.googlesource.com/9685
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
The most common use case to init a player is to open an asset and provide
it to NewPlayer. Currently, we require use to keep a reference to the source
and close it after the player is destroyed. It's tedious. We may improve
the usability by freeing the source asset on Destroy. And if the user
wants to play a ReadSeeker, they can implement a trivial ReadSeekCloser
with a noop Close.
Change-Id: Ie6bdea468da484f785bc0c283f13203cad3a1a68
Reviewed-on: https://go-review.googlesource.com/9693
Reviewed-by: Nigel Tao <nigeltao@golang.org>
This app makes a sound as the gopher hits the edges of the screen.
Change-Id: I85c7d55ec88b1a9faec5dfb7b29e03d1149f5d65
Reviewed-on: https://go-review.googlesource.com/9698
Reviewed-by: Nigel Tao <nigeltao@golang.org>
The gomobile bind command outputs an .aar file ready to include in an
Android project. If the including project use the minifyEnabled gradle
option the field go.Seq.memptr will be removed since it is only referenced
from C code.
Instruct the minifier to keep all go.* java code by adding an appropriate
proguard.txt file to the .aar file.
Change-Id: Ia1e89a5d8f4b4f349f9c2cf4d0dba2628557fdf9
Reviewed-on: https://go-review.googlesource.com/9802
Reviewed-by: David Crawshaw <crawshaw@golang.org>
On mobile devices, there is typically only a single audio device. We may
open it once and reuse it to stream audio buffers from multiple sources.
This assumption also applies to the context since OpenAL contextes are
process-wide. A shared global pointer is reusable across multiple
OpenAL sources.
This CL also removes the Device and Context types and the unexpected
garbage collection issue introduced by Context's finalizer.
Fixesgolang/go#10636
Change-Id: I82e6e6e6a1500ba91d66a7848cf37d1a5e01af9b
Reviewed-on: https://go-review.googlesource.com/9782
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Config provides a way to concurrently access Width and Height.
Register provides a way for packages to run code on app state change
without plumbing changes all the way to the process main function.
This is motivated by gl/glutil.Image which needs to rebuild its
textures on start/stop and can be deeply nested.
(See golang.org/cl/9707 for the followup.)
Tested manually on android and darwin/amd64. Doing this kind makes it
clear any CL modifying this code needs a lot of manual testing right
now, so some kind of trybot support is something I'm going to
prioritise.
Fixesgolang/go#10686Fixesgolang/go#10461Fixesgolang/go#10442Fixesgolang/go#10226
Updates golang/go#10327
Change-Id: I2882ebf3995b6ed857cda823e94fbb17c54b43a8
Reviewed-on: https://go-review.googlesource.com/9708
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Change-Id: Ica709ed74b014feb21e632cd967279da3ebd41ad
Reviewed-on: https://go-review.googlesource.com/9730
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Keeping the Dockerfile as a reference to setup a working dev env
without gomobile init.
Fixes#10523
Change-Id: Ie5a359baff2c3b65ac34045fb8ab5560a23c0e22
Reviewed-on: https://go-review.googlesource.com/9686
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
The global constructor added for -buildmode=c-shared takes care
of a lot of the messier steps that were being done here.
Change-Id: I00525765855b2ad0fcecb0639d6a7ee3feea9ed9
Reviewed-on: https://go-review.googlesource.com/9648
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Useful if you are running an old unsupported Java 1.6.
Change-Id: I794bacc22a09ee339730ef7b600475eba09a3a9d
Reviewed-on: https://go-review.googlesource.com/9649
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Hyang-Ah (Hana) Kim
Jihyun Yu
David Crawshaw
Nigel Tao
Elias Naur
Burcu Dogan