win: Add implementation of system_snapshot for Windows

snapshot/win/system_snapshot_win_test.cc

Index: snapshot/win/system_snapshot_win_test.cc
diff --git a/snapshot/mac/system_snapshot_mac_test.cc b/snapshot/win/system_snapshot_win_test.cc
similarity index 60%
copy from snapshot/mac/system_snapshot_mac_test.cc
copy to snapshot/win/system_snapshot_win_test.cc
index b69ccac20d2001f34a2226d70b917d0ec51ccf76..7552ca5642b677f53ee440b38520ec272e358ceb 100644
--- a/snapshot/mac/system_snapshot_mac_test.cc
+++ b/snapshot/win/system_snapshot_win_test.cc
@@ -1,4 +1,4 @@
-// Copyright 2014 The Crashpad Authors. All rights reserved.
+// Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "snapshot/mac/system_snapshot_mac.h"
+#include "snapshot/win/system_snapshot_win.h"
 
 #include <sys/time.h>
 #include <time.h>
@@ -21,113 +21,93 @@
 
 #include "build/build_config.h"
 #include "gtest/gtest.h"
-#include "snapshot/mac/process_reader.h"
-#include "util/mac/mac_util.h"
-#include "util/test/errors.h"
+#include "snapshot/win/process_reader_win.h"
 
 namespace crashpad {
 namespace test {
 namespace {
 
-// SystemSnapshotMac objects would be cumbersome to construct in each test that
-// requires one, because of the repetitive and mechanical work necessary to set
-// up a ProcessReader and timeval, along with the checks to verify that these
-// operations succeed. This test fixture class handles the initialization work
-// so that individual tests don’t have to.
-class SystemSnapshotMacTest : public testing::Test {
+class SystemSnapshotWinTest : public testing::Test {
  public:
-  SystemSnapshotMacTest()
+  SystemSnapshotWinTest()
       : Test(),
         process_reader_(),
-        snapshot_time_(),
         system_snapshot_() {
   }
 
-  const internal::SystemSnapshotMac& system_snapshot() const {
+  const internal::SystemSnapshotWin& system_snapshot() const {
     return system_snapshot_;
   }
 
   // testing::Test:
   void SetUp() override {
-    ASSERT_TRUE(process_reader_.Initialize(mach_task_self()));
-    ASSERT_EQ(0, gettimeofday(&snapshot_time_, nullptr))
-        << ErrnoMessage("gettimeofday");
-    system_snapshot_.Initialize(&process_reader_, &snapshot_time_);
+    ASSERT_TRUE(process_reader_.Initialize(GetCurrentProcess()));
+    system_snapshot_.Initialize(&process_reader_);
   }
 
  private:
-  ProcessReader process_reader_;
-  timeval snapshot_time_;
-  internal::SystemSnapshotMac system_snapshot_;
+  ProcessReaderWin process_reader_;
+  internal::SystemSnapshotWin system_snapshot_;
 
-  DISALLOW_COPY_AND_ASSIGN(SystemSnapshotMacTest);
+  DISALLOW_COPY_AND_ASSIGN(SystemSnapshotWinTest);
 };
 
-TEST_F(SystemSnapshotMacTest, GetCPUArchitecture) {
+TEST_F(SystemSnapshotWinTest, GetCPUArchitecture) {
   CPUArchitecture cpu_architecture = system_snapshot().GetCPUArchitecture();
 
 #if defined(ARCH_CPU_X86)
   EXPECT_EQ(kCPUArchitectureX86, cpu_architecture);
 #elif defined(ARCH_CPU_X86_64)
   EXPECT_EQ(kCPUArchitectureX86_64, cpu_architecture);
-#else
-#error port to your architecture
 #endif
 }
 
-TEST_F(SystemSnapshotMacTest, CPUCount) {
+TEST_F(SystemSnapshotWinTest, CPUCount) {
   EXPECT_GE(system_snapshot().CPUCount(), 1);
 }
 
-TEST_F(SystemSnapshotMacTest, CPUVendor) {
+TEST_F(SystemSnapshotWinTest, CPUVendor) {
   std::string cpu_vendor = system_snapshot().CPUVendor();
 
-#if defined(ARCH_CPU_X86_FAMILY)
-  // Apple has only shipped Intel x86-family CPUs, but here’s a small nod to the
-  // “Hackintosh” crowd.
-  if (cpu_vendor != "GenuineIntel" && cpu_vendor != "AuthenticAMD") {
-    FAIL() << "cpu_vendor " << cpu_vendor;
-  }
-#else
-#error port to your architecture
-#endif
+  // There are a variety of other values, but we don't expect to run our tests
+  // on them.
+  EXPECT_TRUE(cpu_vendor == "GenuineIntel" || cpu_vendor == "AuthenticAMD");
 }
 
-#if defined(ARCH_CPU_X86_FAMILY)
-
-TEST_F(SystemSnapshotMacTest, CPUX86SupportsDAZ) {
-  // All x86-family CPUs that Apple is known to have shipped should support DAZ.
+TEST_F(SystemSnapshotWinTest, CPUX86SupportsDAZ) {
+  // Most SSE2+ machines support Denormals-Are-Zero. This may fail if run on
+  // older machines.
   EXPECT_TRUE(system_snapshot().CPUX86SupportsDAZ());
 }
 
-#endif
-
-TEST_F(SystemSnapshotMacTest, GetOperatingSystem) {
-  EXPECT_EQ(SystemSnapshot::kOperatingSystemMacOSX,
+TEST_F(SystemSnapshotWinTest, GetOperatingSystem) {
+  EXPECT_EQ(SystemSnapshot::kOperatingSystemWindows,
             system_snapshot().GetOperatingSystem());
 }
 
-TEST_F(SystemSnapshotMacTest, OSVersion) {
+TEST_F(SystemSnapshotWinTest, OSVersion) {
   int major;
   int minor;
   int bugfix;
   std::string build;
   system_snapshot().OSVersion(&major, &minor, &bugfix, &build);
 
-  EXPECT_EQ(10, major);
-  EXPECT_EQ(MacOSXMinorVersion(), minor);
-  EXPECT_FALSE(build.empty());
+  EXPECT_GE(major, 5);
+  if (major == 5)
+    EXPECT_GE(minor, 1);
+  if (major == 6)
+    EXPECT_TRUE(minor >= 0 && minor <= 3);
 }
 
-TEST_F(SystemSnapshotMacTest, OSVersionFull) {
+TEST_F(SystemSnapshotWinTest, OSVersionFull) {
   EXPECT_FALSE(system_snapshot().OSVersionFull().empty());
 }
 
-TEST_F(SystemSnapshotMacTest, MachineDescription) {
-  EXPECT_FALSE(system_snapshot().MachineDescription().empty());
+TEST_F(SystemSnapshotWinTest, MachineDescription) {
+  EXPECT_TRUE(system_snapshot().MachineDescription().empty());
 }
 
-TEST_F(SystemSnapshotMacTest, TimeZone) {
+TEST_F(SystemSnapshotWinTest, TimeZone) {
   SystemSnapshot::DaylightSavingTimeStatus dst_status;
   int standard_offset_seconds;
   int daylight_offset_seconds;