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EGL: add GPU frame completion tracing

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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 commit is contained in:
Jamie Gennis 2012-04-05 20:34:54 -07:00
parent 8cce8a9a75
commit 28ef8d7911
3 changed files with 84 additions and 3 deletions
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77
opengl/libs/EGL/eglApi.cpp
View File

@ -715,6 +715,69 @@ __eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
return addr;
}
class FrameCompletionThread : public Thread {
public:
static void queueSync(EGLSyncKHR sync) {
static sp<FrameCompletionThread> thread(new FrameCompletionThread);
static bool running = false;
if (!running) {
thread->run("GPUFrameCompletion");
running = true;
}
{
Mutex::Autolock lock(thread->mMutex);
ScopedTrace st(ATRACE_TAG, String8::format("kicked off frame %d",
thread->mFramesQueued).string());
thread->mQueue.push_back(sync);
thread->mCondition.signal();
thread->mFramesQueued++;
ATRACE_INT("GPU Frames Outstanding", thread->mQueue.size());
}
}
private:
FrameCompletionThread() : mFramesQueued(0), mFramesCompleted(0) {}
virtual bool threadLoop() {
EGLSyncKHR sync;
uint32_t frameNum;
{
Mutex::Autolock lock(mMutex);
while (mQueue.isEmpty()) {
mCondition.wait(mMutex);
}
sync = mQueue[0];
frameNum = mFramesCompleted;
}
EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
{
ScopedTrace st(ATRACE_TAG, String8::format("waiting for frame %d",
frameNum).string());
EGLint result = eglClientWaitSyncKHR(dpy, sync, 0, EGL_FOREVER_KHR);
if (result == EGL_FALSE) {
ALOGE("FrameCompletion: error waiting for fence: %#x", eglGetError());
} else if (result == EGL_TIMEOUT_EXPIRED_KHR) {
ALOGE("FrameCompletion: timeout waiting for fence");
}
eglDestroySyncKHR(dpy, sync);
}
{
Mutex::Autolock lock(mMutex);
mQueue.removeAt(0);
mFramesCompleted++;
ATRACE_INT("GPU Frames Outstanding", mQueue.size());
}
return true;
}
uint32_t mFramesQueued;
uint32_t mFramesCompleted;
Vector<EGLSyncKHR> mQueue;
Condition mCondition;
Mutex mMutex;
};
EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
{
ATRACE_CALL();
@ -744,7 +807,19 @@ EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
}
}
return s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface);
EGLBoolean result = s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface);
if (CC_UNLIKELY(dp->traceGpuCompletion)) {
EGLSyncKHR sync = EGL_NO_SYNC_KHR;
{
sync = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, NULL);
}
if (sync != EGL_NO_SYNC_KHR) {
FrameCompletionThread::queueSync(sync);
}
}
return result;
}
EGLBoolean eglCopyBuffers( EGLDisplay dpy, EGLSurface surface,

7
opengl/libs/EGL/egl_display.cpp
View File

@ -67,7 +67,7 @@ extern void setGLHooksThreadSpecific(gl_hooks_t const *value);
egl_display_t egl_display_t::sDisplay[NUM_DISPLAYS];
egl_display_t::egl_display_t() :
magic('_dpy'), finishOnSwap(false), refs(0) {
magic('_dpy'), finishOnSwap(false), traceGpuCompletion(false), refs(0) {
}
egl_display_t::~egl_display_t() {
@ -239,6 +239,11 @@ EGLBoolean egl_display_t::initialize(EGLint *major, EGLint *minor) {
finishOnSwap = true;
}
property_get("debug.egl.traceGpuCompletion", value, "0");
if (atoi(value)) {
traceGpuCompletion = true;
}
refs++;
if (major != NULL)
*major = VERSION_MAJOR;

3
opengl/libs/EGL/egl_display.h
View File

@ -107,7 +107,8 @@ private:
public:
DisplayImpl disp;
bool finishOnSwap;
bool finishOnSwap; // property: debug.egl.finish
bool traceGpuCompletion; // property: debug.egl.traceGpuCompletion
private:
uint32_t refs;