remove support for console in SurfaceFlinger
the only supported screen management api now is
/sys/power/wait_for_fb_{sleep|wake}
Change-Id: I6c7d8d54843da4980b1b38ee3d46cf19be275240
diff --git a/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.cpp b/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.cpp
index 90865da..59b7e5a 100644
--- a/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.cpp
+++ b/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.cpp
@@ -38,23 +38,10 @@
#include "SurfaceFlinger.h"
// ----------------------------------------------------------------------------
-// the sim build doesn't have gettid
-
-#ifndef HAVE_GETTID
-# define gettid getpid
-#endif
-
-// ----------------------------------------------------------------------------
namespace android {
-static char const * kSleepFileName = "/sys/power/wait_for_fb_sleep";
-static char const * kWakeFileName = "/sys/power/wait_for_fb_wake";
-static char const * const kOldSleepFileName = "/sys/android_power/wait_for_fb_sleep";
-static char const * const kOldWakeFileName = "/sys/android_power/wait_for_fb_wake";
-
-// This dir exists if the framebuffer console is present, either built into
-// the kernel or loaded as a module.
-static char const * const kFbconSysDir = "/sys/class/graphics/fbcon";
+static char const * const kSleepFileName = "/sys/power/wait_for_fb_sleep";
+static char const * const kWakeFileName = "/sys/power/wait_for_fb_wake";
// ----------------------------------------------------------------------------
@@ -122,237 +109,13 @@
status_t DisplayHardwareBase::DisplayEventThread::readyToRun()
{
- if (access(kSleepFileName, R_OK) || access(kWakeFileName, R_OK)) {
- if (access(kOldSleepFileName, R_OK) || access(kOldWakeFileName, R_OK)) {
- LOGE("Couldn't open %s or %s", kSleepFileName, kWakeFileName);
- return NO_INIT;
- }
- kSleepFileName = kOldSleepFileName;
- kWakeFileName = kOldWakeFileName;
- }
return NO_ERROR;
}
status_t DisplayHardwareBase::DisplayEventThread::initCheck() const
{
- return (((access(kSleepFileName, R_OK) == 0 &&
- access(kWakeFileName, R_OK) == 0) ||
- (access(kOldSleepFileName, R_OK) == 0 &&
- access(kOldWakeFileName, R_OK) == 0)) &&
- access(kFbconSysDir, F_OK) != 0) ? NO_ERROR : NO_INIT;
-}
-
-// ----------------------------------------------------------------------------
-
-pid_t DisplayHardwareBase::ConsoleManagerThread::sSignalCatcherPid = 0;
-
-DisplayHardwareBase::ConsoleManagerThread::ConsoleManagerThread(
- const sp<SurfaceFlinger>& flinger)
- : DisplayEventThreadBase(flinger), consoleFd(-1)
-{
- sSignalCatcherPid = 0;
-
- // create a new console
- char const * const ttydev = "/dev/tty0";
- int fd = open(ttydev, O_RDWR | O_SYNC);
- if (fd<0) {
- LOGE("Can't open %s", ttydev);
- this->consoleFd = -errno;
- return;
- }
-
- // to make sure that we are in text mode
- int res = ioctl(fd, KDSETMODE, (void*) KD_TEXT);
- if (res<0) {
- LOGE("ioctl(%d, KDSETMODE, ...) failed, res %d (%s)",
- fd, res, strerror(errno));
- }
-
- // get the current console
- struct vt_stat vs;
- res = ioctl(fd, VT_GETSTATE, &vs);
- if (res<0) {
- LOGE("ioctl(%d, VT_GETSTATE, ...) failed, res %d (%s)",
- fd, res, strerror(errno));
- this->consoleFd = -errno;
- return;
- }
-
- // switch to console 7 (which is what X normaly uses)
- int vtnum = 7;
- do {
- res = ioctl(fd, VT_ACTIVATE, (void*)vtnum);
- } while(res < 0 && errno == EINTR);
- if (res<0) {
- LOGE("ioctl(%d, VT_ACTIVATE, ...) failed, %d (%s) for %d",
- fd, errno, strerror(errno), vtnum);
- this->consoleFd = -errno;
- return;
- }
-
- do {
- res = ioctl(fd, VT_WAITACTIVE, (void*)vtnum);
- } while(res < 0 && errno == EINTR);
- if (res<0) {
- LOGE("ioctl(%d, VT_WAITACTIVE, ...) failed, %d %d %s for %d",
- fd, res, errno, strerror(errno), vtnum);
- this->consoleFd = -errno;
- return;
- }
-
- // open the new console
- close(fd);
- fd = open(ttydev, O_RDWR | O_SYNC);
- if (fd<0) {
- LOGE("Can't open new console %s", ttydev);
- this->consoleFd = -errno;
- return;
- }
-
- /* disable console line buffer, echo, ... */
- struct termios ttyarg;
- ioctl(fd, TCGETS , &ttyarg);
- ttyarg.c_iflag = 0;
- ttyarg.c_lflag = 0;
- ioctl(fd, TCSETS , &ttyarg);
-
- // set up signals so we're notified when the console changes
- // we can't use SIGUSR1 because it's used by the java-vm
- vm.mode = VT_PROCESS;
- vm.waitv = 0;
- vm.relsig = SIGUSR2;
- vm.acqsig = SIGUNUSED;
- vm.frsig = 0;
-
- struct sigaction act;
- sigemptyset(&act.sa_mask);
- act.sa_handler = sigHandler;
- act.sa_flags = 0;
- sigaction(vm.relsig, &act, NULL);
-
- sigemptyset(&act.sa_mask);
- act.sa_handler = sigHandler;
- act.sa_flags = 0;
- sigaction(vm.acqsig, &act, NULL);
-
- sigset_t mask;
- sigemptyset(&mask);
- sigaddset(&mask, vm.relsig);
- sigaddset(&mask, vm.acqsig);
- sigprocmask(SIG_BLOCK, &mask, NULL);
-
- // switch to graphic mode
- res = ioctl(fd, KDSETMODE, (void*)KD_GRAPHICS);
- LOGW_IF(res<0,
- "ioctl(%d, KDSETMODE, KD_GRAPHICS) failed, res %d", fd, res);
-
- this->prev_vt_num = vs.v_active;
- this->vt_num = vtnum;
- this->consoleFd = fd;
-}
-
-DisplayHardwareBase::ConsoleManagerThread::~ConsoleManagerThread()
-{
- if (this->consoleFd >= 0) {
- int fd = this->consoleFd;
- int prev_vt_num = this->prev_vt_num;
- int res;
- ioctl(fd, KDSETMODE, (void*)KD_TEXT);
- do {
- res = ioctl(fd, VT_ACTIVATE, (void*)prev_vt_num);
- } while(res < 0 && errno == EINTR);
- do {
- res = ioctl(fd, VT_WAITACTIVE, (void*)prev_vt_num);
- } while(res < 0 && errno == EINTR);
- close(fd);
- char const * const ttydev = "/dev/tty0";
- fd = open(ttydev, O_RDWR | O_SYNC);
- ioctl(fd, VT_DISALLOCATE, 0);
- close(fd);
- }
-}
-
-status_t DisplayHardwareBase::ConsoleManagerThread::readyToRun()
-{
- if (this->consoleFd >= 0) {
- sSignalCatcherPid = gettid();
-
- sigset_t mask;
- sigemptyset(&mask);
- sigaddset(&mask, vm.relsig);
- sigaddset(&mask, vm.acqsig);
- sigprocmask(SIG_BLOCK, &mask, NULL);
-
- int res = ioctl(this->consoleFd, VT_SETMODE, &vm);
- if (res<0) {
- LOGE("ioctl(%d, VT_SETMODE, ...) failed, %d (%s)",
- this->consoleFd, errno, strerror(errno));
- }
- return NO_ERROR;
- }
- return this->consoleFd;
-}
-
-void DisplayHardwareBase::ConsoleManagerThread::requestExit()
-{
- Thread::requestExit();
- if (sSignalCatcherPid != 0) {
- // wake the thread up
- kill(sSignalCatcherPid, SIGINT);
- // wait for it...
- }
-}
-
-void DisplayHardwareBase::ConsoleManagerThread::sigHandler(int sig)
-{
- // resend the signal to our signal catcher thread
- LOGW("received signal %d in thread %d, resending to %d",
- sig, gettid(), sSignalCatcherPid);
-
- // we absolutely need the delays below because without them
- // our main thread never gets a chance to handle the signal.
- usleep(10000);
- kill(sSignalCatcherPid, sig);
- usleep(10000);
-}
-
-status_t DisplayHardwareBase::ConsoleManagerThread::releaseScreen() const
-{
- int fd = this->consoleFd;
- int err = ioctl(fd, VT_RELDISP, (void*)1);
- LOGE_IF(err<0, "ioctl(%d, VT_RELDISP, 1) failed %d (%s)",
- fd, errno, strerror(errno));
- return (err<0) ? (-errno) : status_t(NO_ERROR);
-}
-
-bool DisplayHardwareBase::ConsoleManagerThread::threadLoop()
-{
- sigset_t mask;
- sigemptyset(&mask);
- sigaddset(&mask, vm.relsig);
- sigaddset(&mask, vm.acqsig);
-
- int sig = 0;
- sigwait(&mask, &sig);
-
- if (sig == vm.relsig) {
- sp<SurfaceFlinger> flinger = mFlinger.promote();
- //LOGD("About to give-up screen, flinger = %p", flinger.get());
- if (flinger != 0)
- flinger->screenReleased(0);
- } else if (sig == vm.acqsig) {
- sp<SurfaceFlinger> flinger = mFlinger.promote();
- //LOGD("Screen about to return, flinger = %p", flinger.get());
- if (flinger != 0)
- flinger->screenAcquired(0);
- }
-
- return true;
-}
-
-status_t DisplayHardwareBase::ConsoleManagerThread::initCheck() const
-{
- return consoleFd >= 0 ? NO_ERROR : NO_INIT;
+ return ((access(kSleepFileName, R_OK) == 0 &&
+ access(kWakeFileName, R_OK) == 0)) ? NO_ERROR : NO_INIT;
}
// ----------------------------------------------------------------------------
@@ -362,10 +125,6 @@
: mCanDraw(true), mScreenAcquired(true)
{
mDisplayEventThread = new DisplayEventThread(flinger);
- if (mDisplayEventThread->initCheck() != NO_ERROR) {
- // fall-back on the console
- mDisplayEventThread = new ConsoleManagerThread(flinger);
- }
}
DisplayHardwareBase::~DisplayHardwareBase()
diff --git a/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.h b/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.h
index fa6a0c4..30eb258 100644
--- a/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.h
+++ b/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.h
@@ -73,24 +73,6 @@
virtual status_t initCheck() const;
};
- class ConsoleManagerThread : public DisplayEventThreadBase
- {
- int consoleFd;
- int vt_num;
- int prev_vt_num;
- vt_mode vm;
- static void sigHandler(int sig);
- static pid_t sSignalCatcherPid;
- public:
- ConsoleManagerThread(const sp<SurfaceFlinger>& flinger);
- virtual ~ConsoleManagerThread();
- virtual bool threadLoop();
- virtual status_t readyToRun();
- virtual void requestExit();
- virtual status_t releaseScreen() const;
- virtual status_t initCheck() const;
- };
-
sp<DisplayEventThreadBase> mDisplayEventThread;
mutable int mCanDraw;
mutable int mScreenAcquired;