初始化

LFtid1056/lib/libuv-v1.51.0/src/win/winapi.c

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+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <assert.h>
+
+#include "uv.h"
+#include "internal.h"
+
+
+/* Ntdll function pointers */
+sRtlGetVersion pRtlGetVersion;
+sRtlNtStatusToDosError pRtlNtStatusToDosError;
+sNtDeviceIoControlFile pNtDeviceIoControlFile;
+sNtQueryInformationFile pNtQueryInformationFile;
+sNtSetInformationFile pNtSetInformationFile;
+sNtQueryVolumeInformationFile pNtQueryVolumeInformationFile;
+sNtQueryDirectoryFile pNtQueryDirectoryFile;
+sNtQuerySystemInformation pNtQuerySystemInformation;
+sNtQueryInformationProcess pNtQueryInformationProcess;
+
+/* Powrprof.dll function pointer */
+sPowerRegisterSuspendResumeNotification pPowerRegisterSuspendResumeNotification;
+
+/* User32.dll function pointer */
+sSetWinEventHook pSetWinEventHook;
+
+/* ws2_32.dll function pointer */
+uv_sGetHostNameW pGetHostNameW;
+
+/* api-ms-win-core-file-l2-1-4.dll function pointer */
+sGetFileInformationByName pGetFileInformationByName;
+
+void uv__winapi_init(void) {
+  HMODULE ntdll_module;
+  HMODULE powrprof_module;
+  HMODULE user32_module;
+  HMODULE ws2_32_module;
+  HMODULE api_win_core_file_module;
+
+  ntdll_module = GetModuleHandleA("ntdll.dll");
+  if (ntdll_module == NULL) {
+    uv_fatal_error(GetLastError(), "GetModuleHandleA");
+  }
+
+  pRtlGetVersion = (sRtlGetVersion) GetProcAddress(ntdll_module,
+                                                   "RtlGetVersion");
+
+  pRtlNtStatusToDosError = (sRtlNtStatusToDosError) GetProcAddress(
+      ntdll_module,
+      "RtlNtStatusToDosError");
+  if (pRtlNtStatusToDosError == NULL) {
+    uv_fatal_error(GetLastError(), "GetProcAddress");
+  }
+
+  pNtDeviceIoControlFile = (sNtDeviceIoControlFile) GetProcAddress(
+      ntdll_module,
+      "NtDeviceIoControlFile");
+  if (pNtDeviceIoControlFile == NULL) {
+    uv_fatal_error(GetLastError(), "GetProcAddress");
+  }
+
+  pNtQueryInformationFile = (sNtQueryInformationFile) GetProcAddress(
+      ntdll_module,
+      "NtQueryInformationFile");
+  if (pNtQueryInformationFile == NULL) {
+    uv_fatal_error(GetLastError(), "GetProcAddress");
+  }
+
+  pNtSetInformationFile = (sNtSetInformationFile) GetProcAddress(
+      ntdll_module,
+      "NtSetInformationFile");
+  if (pNtSetInformationFile == NULL) {
+    uv_fatal_error(GetLastError(), "GetProcAddress");
+  }
+
+  pNtQueryVolumeInformationFile = (sNtQueryVolumeInformationFile)
+      GetProcAddress(ntdll_module, "NtQueryVolumeInformationFile");
+  if (pNtQueryVolumeInformationFile == NULL) {
+    uv_fatal_error(GetLastError(), "GetProcAddress");
+  }
+
+  pNtQueryDirectoryFile = (sNtQueryDirectoryFile)
+      GetProcAddress(ntdll_module, "NtQueryDirectoryFile");
+  if (pNtQueryDirectoryFile == NULL) {
+    uv_fatal_error(GetLastError(), "GetProcAddress");
+  }
+
+  pNtQuerySystemInformation = (sNtQuerySystemInformation) GetProcAddress(
+      ntdll_module,
+      "NtQuerySystemInformation");
+  if (pNtQuerySystemInformation == NULL) {
+    uv_fatal_error(GetLastError(), "GetProcAddress");
+  }
+
+  pNtQueryInformationProcess = (sNtQueryInformationProcess) GetProcAddress(
+      ntdll_module,
+      "NtQueryInformationProcess");
+  if (pNtQueryInformationProcess == NULL) {
+    uv_fatal_error(GetLastError(), "GetProcAddress");
+  }
+
+  powrprof_module = LoadLibraryExA("powrprof.dll", NULL, LOAD_LIBRARY_SEARCH_SYSTEM32);
+  if (powrprof_module != NULL) {
+    pPowerRegisterSuspendResumeNotification = (sPowerRegisterSuspendResumeNotification)
+      GetProcAddress(powrprof_module, "PowerRegisterSuspendResumeNotification");
+  }
+
+  user32_module = GetModuleHandleA("user32.dll");
+  if (user32_module != NULL) {
+    pSetWinEventHook = (sSetWinEventHook)
+      GetProcAddress(user32_module, "SetWinEventHook");
+  }
+
+  ws2_32_module = GetModuleHandleA("ws2_32.dll");
+  if (ws2_32_module != NULL) {
+    pGetHostNameW = (uv_sGetHostNameW) GetProcAddress(
+        ws2_32_module,
+        "GetHostNameW");
+  }
+
+  api_win_core_file_module = GetModuleHandleA("api-ms-win-core-file-l2-1-4.dll");
+  if (api_win_core_file_module != NULL) {
+    pGetFileInformationByName = (sGetFileInformationByName)GetProcAddress(
+        api_win_core_file_module, "GetFileInformationByName");
+  }
+}