- Process is killed by system with SIGBUS signal if it writes
data to mapped sparse file on full filesystem.
- Allocate space using write() function instead of ftruncate()
to avoid creation of sparse files on full filesystem.
Catch write() errors to handle out-of-space case during allocation.
Bug: http://code.google.com/p/android/issues/detail?id=35376
Change-Id: Ifc366454f34e71a43a0973eda4f591a920ea3a14
Signed-off-by: Kirill Artamonov <kartamonov@nvidia.com>
this allows us to enable h/w acceleration on low-end
devices while keeping memory usage down.
Bug: 6557760
Change-Id: I8af2de3038dc2579360b8b73aa452cb7a0e506a9
Hibernating EGL takes a long time (>100 ms) and blocks all other
rendering. During window animations, the outgoing activity begins
hibernation before the animation stops, causing visible stutter.
Hibernation is still available by setting 'BOARD_ALLOW_EGL_HIBERNATION
:= true' in the devices BoardConfig.mk
Change-Id: Iab4e00723a1adcd97481e81b2efdc821b3e9712f
When eglTerminate() is called with a window surface still exists, a
deadlock would occur since egl_display_t::terminate() holds a lock
while destroying the window surface, which calls
onWindowSurfaceDestroyed() which attempts to take the same lock.
This change refactors the hibernation code and data into a separate
object with its own lock, separate from the egl_display_t lock. This
avoids the deadlock and better encapsulates the hibernation logic.
The change also fixes a bug discovered incidentally while debugging:
hibernating after calling eglTerminate() succeeds, but will cause
awakens from subsequent eglInitialize() to fail. We will no longer
hibernate a terminated display.
Change-Id: If55e5bb603d4f8953babc439ffc8d8a60af103d9
If the EGL implementation supports the EGL_IMG_hibernate_process
extension, use it to hibernate (and hopefully release memory or other
resources) when the process isn't actively using EGL or OpenGL ES. The
idleness heuristic used in this change is:
(a) Wake up when entering any EGL API call, and remain awake for the
duration of the call.
(b) Do not hibernate when any window surface exists; this means the
application is very likely in the foreground.
(c) Do not hibernate while any context is made current to a thread.
The app may be using a client API without the EGL layer knowing,
so it is not safe to hibernate.
(d) Only check these conditions and attempt to hibernate after a
window surface is destroyed or a thread's context is detached. By
not attempting to hibernate at the end of every EGL call, we avoid
some transient wakeups/hibernate cycles when the app is mostly idle,
or is starting to become active but hasn't created its window
surface yet.
On a Galaxy Nexus, hibernating frees 1567 VM pages from the process.
Both hibernating and waking can take anywhere from 30ms to over 100ms
-- measurements have been very inconsistent.
Change-Id: Ib555f5d9d069aefccca06e8173a89625b5f32d7e
This is in preparation for a change that will hibernate the underlying
EGL when idle. Instead of a bare egl_display_t*, get_display() now
returns a egl_display_ptr, which acts like a smart pointer. The
"wakecount" counter managed by the smart pointer isn't used for
anything in this change. It will be used to make sure we don't
hibernate when any thread is in an EGL call, without having to hold a
mutex for the duration of the call.
Change-Id: Iee52f3549a51162efc3800e1195d3f76bba2f2ce
This change adds a debug option to EGL to use an EGLSyncKHR each frame to
determine when the GPU finishes rendering the frame.
Change-Id: I09ce071db904b44f07ca814c586c291c8b59385a
This patch adds a function setGlDebugLevel() to libEGL to enable
GL tracing. This will be used by the Java layer to add an option
to "am start" that can enable tracing for a particular application.
Change-Id: Ie1dbdd550f502df8633553595cb33ee9d9ae44e1
this simplify our EGL wrapper implementation a lot.
This wrapping is no longer needed now that we can only
support a single underlaying EGL implementation.
Change-Id: I8213df7ac69daac447f1fe6e37044b78aac4e9a9
this is possible now that we support only a single
EGL implementation. this allows a large code simplification.
Change-Id: I7a6b9db4c5d60f4407c6061e7a68729af63d5242
from now on, the system can only have one EGL
implementation. this means the software and h/w renderer
cannot be used at the same time on a device. Of course, the
h/w renderer is always prefered; in its absence we
default to the software renderer.
Change-Id: Ib579f58055dd0ce4c4a99144131efa11c16ca3d3
this was introduced in a recent change. eglMakeCurrent can
end up calling eglDestroyImageKHR via ANativewWindow::disconnect
when the consumer is in the same process.
we make sure we don't hold the lock while this is happening.
Change-Id: Id17fe4fd76eecf5f962cefb9aa32be41fc1b042d
it would happen when a context was made non-current, in this
case we would call the implementation's eglMakeCurrent() which
would succeed, if we're rescheduled at that point, another
eglMakeCurrent() could make that context current to another thread,
however, when we came back to the original call we would
overwrite egl_context_t internal state.
this is fixed by moving the critical section under
egl_display_t's lock.
Change-Id: I743c85696e13263d3a9570824940263df0caacdc
when increasing MAX_NUMBER_OF_GL_EXTENSIONS to 256
we also needed to create all the corresponding wrappers.
Change-Id: I90edaaf0885ccdfab48e7a1396bcf88e039cfb25
This extension is always added to the GL_EXTENSIONS
extension string for the current GL context, regardless
of if it's supported by the h/w driver.
The extension itself will be handled by GLES_trace (eventually),
when GLES_trace is not enabled, it'll result to a no-op.
If the h/w implementation has this extension, we'll call that version
instead of our dummy version.
Change-Id: Ie5dd3387c4d45cd5ed5f03b73bda6045620a96bc
This patch adds two improvements:
1. Protobuf messages are buffered and sent in chunks.
2. Multiple EGL contexts are handled properly: Corresponding
to each EGLContext, a GLTraceContext with a unique ID is created.
On eglMakeCurrent, the appropriate GLTraceContext is set and is
used while tracing subsequent GL Calls in that thread.
Change-Id: I34076376d3e5af205c87c7396ea47659844abd6e
This patch provides a framework for tracing GLES 1.0 and 2.0
functions. It is missing a lot of features, but here are the
things it accomplishes:
- Stop building the glesv2dbg library, and build the
glestrace library instead.
- Replace the hooks for glesv2dbg with the ones for glestrace.
- Add the basics for the trace library. Currently, this
traces all GL functions, but not all required data is
sent for all the functions. As a result, it will not
be possible to reconstruct the entire GL state on the
host side.
The files gltrace.pb.* and gltrace_api.* are both generated
using the tools/genapi.py script.
Change-Id: Id60a468f7278657f008bc6ea1df01f9bdfecfdd3
This change explicitly sets swap interval 1 on the window when an
EGLSurface is created to render to it.
Change-Id: I91eb29dbee3ae4a55076b921f084d503fbe94e03
This change introduces two new BoardConfig variables to control the size
limits of the EGL blob cache. MAX_EGL_CACHE_ENTRY_SIZE is the size
limit for values inserted into the cache, and MAX_EGL_CACHE_SIZE is the
size limit for all entries in the entire cache (including both keys and
values). If either of these BoardConfig variables are not defined then
a default size limit is used instead.
Change-Id: I6703d93f966b6389c6499f23d841e42339f9c9d7
- don't advertise extensions that are not supported
by any implementation
- remove EGL_ANDROID_swap_rectangle which is not
implemented by anybody and confuses people
- add some comments about mandatory extensions
Bug: 5428001
Change-Id: Id8dc48116ac1d1eb79ec9ef55d03e29d4257c1f3
the code that validated EGL objects dereferenced the object
to access its EGLDisplay -- needed for validation (!).
This was wrong for two reasons, first we dereferenced the object
before validating it (potentially leading to a crash), secondly
we didn't validate that the object existed in the right EGLDisplay.
We now use the EGLDisplay passed by the user API.
Change-Id: I66f9e851d4f8507892a6b1fee3065f124c4e7138
This change adds the ANDROID suffix to the all the types and functions
defined by the EGL_ANDROID_blob_cache extension.
Change-Id: I087875b96d9a7053efb9c8d5614f9f765eed799d
This does not happen on high end gfx devices. This happens
only if only one EGL context is initialized in the current
process.
Change-Id: Ibd1737efdf84eef8a84108b05795440d1ae9964e
This change causes any insertions into the EGL cache to trigger an
attempt to save the cache contents to disk. The save operation is
deferred to allow multiple cache insertions to be batched up.
Change-Id: I6cfec9c0dbbef94d3f8880860e2a365dccc296c7
This change adds support for saving and loading the contents of the EGL
cache. It also adds some simple tests for the EGL cache.
Change-Id: I18e5e789e0897a0783d29d1c1e64d26de2dd44c4
This change makes the makes the stub EGL_ANDROID_blob_cache callbacks
actually use a BlobCache object.
Bug: 5474671
Change-Id: I5cbaae2dea3aad2fe306c9f57029c3f215a0863a
This change adds a stub cache implementation that gets passed to the
underlying EGL implementation at initialization time.
Change-Id: I14437c5b6f91b7a34a19bb02ad802e6e54f88d2a
This patch modifies the library loaded in libEGL.so to
handle the case of GLES emulation as follows:
- if we detect that we run inside the emulator, check the
GPU emulation status through ro.kernel.qemu.gles, which
will be set to 1 if supported, or 0 otherwise.
When trying to run on an older version of the emulator,
the kernel parameter will not be defined at all.
- if GPU emulation is supported, use egl.cfg as usual.
It will contain a line like "0 0 emulation" that will
load libEGL_android.so appropriately.
- nothing is changed if we don't run inside the emulator.
NOTE: Ideally, we would modify libEGL_emulation.so to
redirect all calls to libEGL_android.so in this case.
However, this turns out to be extremely tedious to implement
(too many functions with different signatures).
As such, it is much simpler to make the check before
loading the library.
Change-Id: I9930bc168d9013cc8700feedc57b979384467c37
