GPU process terminates on hang.

I added a watchdog thread that intermitently checks the main thread can respond to tasks posted on its message queue.

I fixed some bugs that preventede GGL from failing when the GPU channel was lost.

Added a command line swith to disable the watchdog thread for debugging purposes.

TEST=try, check WebGL works, check about:gpuhang terminates process.
BUG=38739,53871

Review URL: http://codereview.chromium.org/3528012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@61718 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 21 insertions, 4 deletions

diff --git a/chrome/browser/gpu_process_host.cc b/chrome/browser/gpu_process_host.cc
index 8e2242e..3825c2f 100644
--- a/chrome/browser/gpu_process_host.cc
+++ b/chrome/browser/gpu_process_host.cc
@@ -91,6 +91,7 @@ bool GpuProcessHost::Init() {
   // Propagate relevant command line switches.
   static const char* const kSwitchNames[] = {
     switches::kUseGL,
+    switches::kDisableGpuWatchdog,
     switches::kDisableLogging,
     switches::kEnableLogging,
     switches::kGpuStartupDialog,
@@ -122,14 +123,18 @@ GpuProcessHost* GpuProcessHost::Get() {
   return sole_instance_;
 }
 
-// static
 void GpuProcessHost::SendAboutGpuCrash() {
-  Get()->Send(new GpuMsg_Crash());
+    ChromeThread::PostTask(
+        ChromeThread::IO,
+        FROM_HERE,
+        NewRunnableFunction(&GpuProcessHost::SendAboutGpuCrashInternal));
 }
 
-// static
 void GpuProcessHost::SendAboutGpuHang() {
-  Get()->Send(new GpuMsg_Hang());
+    ChromeThread::PostTask(
+        ChromeThread::IO,
+        FROM_HERE,
+        NewRunnableFunction(&GpuProcessHost::SendAboutGpuHangInternal));
 }
 
 bool GpuProcessHost::Send(IPC::Message* msg) {
@@ -348,3 +353,15 @@ URLRequestContext* GpuProcessHost::GetRequestContext(
 bool GpuProcessHost::CanShutdown() {
   return true;
 }
+
+// static
+void GpuProcessHost::SendAboutGpuCrashInternal() {
+  DCHECK(Get());
+  Get()->Send(new GpuMsg_Crash());
+}
+
+// static
+void GpuProcessHost::SendAboutGpuHangInternal() {
+  DCHECK(Get());
+  Get()->Send(new GpuMsg_Hang());
+}