1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <windows.h>
#include <psapi.h>
#include "skia/ext/bitmap_platform_device_win.h"
#include "skia/ext/platform_canvas.h"
namespace skia {
// Disable optimizations during crash analysis.
#pragma optimize("", off)
// Crash on failure.
#define CHECK(condition) if (!(condition)) __debugbreak();
// Crashes the process. 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) {
// Store the extended error info in a place easy to find at debug time.
struct {
unsigned int last_error;
unsigned int diag_error;
} extended_error_info;
extended_error_info.last_error = GetLastError();
extended_error_info.diag_error = 0;
// If the bitmap is ginormous, then we probably can't allocate it.
// We use 64M pixels = 256MB @ 4 bytes per pixel.
const __int64 kGinormousBitmapPxl = 64000000;
CHECK(static_cast<__int64>(w) * static_cast<__int64>(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) {
extended_error_info.diag_error = GetLastError();
CHECK(0);
}
CHECK(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 pmc;
if (!GetProcessMemoryInfo(GetCurrentProcess(), &pmc, sizeof(pmc))) {
extended_error_info.diag_error = GetLastError();
CHECK(0);
}
CHECK(pmc.PagefileUsage < kLotsOfMem);
// Everything else.
CHECK(0);
}
// 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;
CHECK(::GetHandleInformation(shared_section, &handle_info) == TRUE);
}
// Restore the optimization options.
#pragma optimize("", on)
PlatformCanvas::PlatformCanvas(int width, int height, bool is_opaque) {
setDeviceFactory(SkNEW(BitmapPlatformDeviceFactory))->unref();
bool initialized = initialize(width, height, is_opaque, NULL);
if (!initialized)
CrashForBitmapAllocationFailure(width, height);
}
PlatformCanvas::PlatformCanvas(int width,
int height,
bool is_opaque,
HANDLE shared_section) {
setDeviceFactory(SkNEW(BitmapPlatformDeviceFactory))->unref();
bool initialized = initialize(width, height, is_opaque, shared_section);
if (!initialized) {
CrashIfInvalidSection(shared_section);
CrashForBitmapAllocationFailure(width, height);
}
}
PlatformCanvas::~PlatformCanvas() {
}
bool PlatformCanvas::initialize(int width,
int height,
bool is_opaque,
HANDLE shared_section) {
return initializeWithDevice(BitmapPlatformDevice::create(
width, height, is_opaque, shared_section));
}
} // namespace skia
|
