Fix win32 error checking in platform_canvas_skia.cc by moving code into ...

skia/ext/bitmap_platform_device_win.cc

Index: skia/ext/bitmap_platform_device_win.cc
diff --git a/skia/ext/bitmap_platform_device_win.cc b/skia/ext/bitmap_platform_device_win.cc
index 09140a1ed6a8664cd2ecc5af30017643243a9f96..a8b839178e21ae97023ae7072402d6ffa6b182cc 100644
--- a/skia/ext/bitmap_platform_device_win.cc
+++ b/skia/ext/bitmap_platform_device_win.cc
@@ -15,6 +15,65 @@
 
 namespace skia {
 
+// Disable optimizations during crash analysis.
+#pragma optimize("", off)
+
+// Crash On Failure. |address| should be a number less than 4000.
+#define COF(address, condition) if (!(condition)) *((int*) address) = 0
+
+// This is called when a bitmap allocation fails, and this function tries to
+// determine why it might have failed, and crash on different
+// lines. This allows us to see in crash dumps the most likely reason for the
+// failure. It takes the size of the bitmap we were trying to allocate as its
+// arguments so we can check that as well.
+//
+// Note that in a sandboxed renderer this function crashes when trying to
+// call GetProcessMemoryInfo() because it tries to load psapi.dll, which
+// is fine but gives you a very hard to read crash dump.
+void CrashForBitmapAllocationFailure(int w, int h, unsigned int error) {
+  // Store the extended error info in a place easy to find at debug time.
+  unsigned int diag_error = 0;
+  // If the bitmap is ginormous, then we probably can't allocate it.
+  // We use 32M pixels = 128MB @ 4 bytes per pixel.
+  const LONG_PTR kGinormousBitmapPxl = 32000000;
+  COF(1, LONG_PTR(w) * LONG_PTR(h) < kGinormousBitmapPxl);
+
+  // The maximum number of GDI objects per process is 10K. If we're very close
+  // to that, it's probably the problem.
+  const unsigned int kLotsOfGDIObjects = 9990;
+  unsigned int num_gdi_objects = GetGuiResources(GetCurrentProcess(),
+                                                 GR_GDIOBJECTS);
+  if (num_gdi_objects == 0) {
+    diag_error = GetLastError();
+    COF(2, false);
+  }
+  COF(3, num_gdi_objects < kLotsOfGDIObjects);
+
+  // If we're using a crazy amount of virtual address space, then maybe there
+  // isn't enough for our bitmap.
+  const SIZE_T kLotsOfMem = 1500000000;  // 1.5GB.
+  PROCESS_MEMORY_COUNTERS_EX pmc;
+  pmc.cb = sizeof(pmc);
+  if (!GetProcessMemoryInfo(GetCurrentProcess(),
+                            reinterpret_cast<PROCESS_MEMORY_COUNTERS*>(&pmc),
+                            sizeof(pmc))) {
+    diag_error = GetLastError();
+    COF(4, false);
+  }
+  COF(5, pmc.PagefileUsage < kLotsOfMem);
+  COF(6, pmc.PrivateUsage < kLotsOfMem);
+  // Ok but we are somehow out of memory?
+  COF(7, error != ERROR_NOT_ENOUGH_MEMORY);
+}
+
+// Crashes the process. This is called when a bitmap allocation fails but
+// unlike its cousin CrashForBitmapAllocationFailure() it tries to detect if
+// the issue was a non-valid shared bitmap handle.
+void CrashIfInvalidSection(HANDLE shared_section) {
+  DWORD handle_info = 0;
+  COF(8, ::GetHandleInformation(shared_section, &handle_info) == TRUE);
+}
+
 BitmapPlatformDevice::BitmapPlatformDeviceData::BitmapPlatformDeviceData(
     HBITMAP hbitmap)
     : bitmap_context_(hbitmap),
@@ -120,6 +179,11 @@ BitmapPlatformDevice* BitmapPlatformDevice::Create(
                                      &data,
                                      shared_section, 0);
   if (!hbitmap) {
+    // Investigate we failed. If we know the reason, crash in a specific place.
+    unsigned int error = GetLastError();
+    if (shared_section)
+      CrashIfInvalidSection(shared_section);
+    CrashForBitmapAllocationFailure(width, height, error);
     return NULL;
   }