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windows: retrieve NtQuerySystemInformation at startup

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This commit is contained in:
Brian White 2012-06-02 20:02:05 +02:00 committed by Bert Belder
parent 120d997809
commit 87f3530a1e
2 changed files with 28 additions and 0 deletions
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8
src/win/winapi.c
View File

@ -29,6 +29,7 @@ sRtlNtStatusToDosError pRtlNtStatusToDosError;
sNtDeviceIoControlFile pNtDeviceIoControlFile;
sNtQueryInformationFile pNtQueryInformationFile;
sNtSetInformationFile pNtSetInformationFile;
sNtQuerySystemInformation pNtQuerySystemInformation;
sGetQueuedCompletionStatusEx pGetQueuedCompletionStatusEx;
sSetFileCompletionNotificationModes pSetFileCompletionNotificationModes;
sCreateSymbolicLinkW pCreateSymbolicLinkW;
@ -79,6 +80,13 @@ void uv_winapi_init() {
uv_fatal_error(GetLastError(), "GetProcAddress");
}
pNtQuerySystemInformation = (sNtQuerySystemInformation) GetProcAddress(
ntdll_module,
"NtQuerySystemInformation");
if (pNtQuerySystemInformation == NULL) {
uv_fatal_error(GetLastError(), "GetProcAddress");
}
kernel32_module = GetModuleHandleA("kernel32.dll");
if (kernel32_module == NULL) {
uv_fatal_error(GetLastError(), "GetModuleHandleA");

20
src/win/winapi.h
View File

@ -4202,6 +4202,19 @@ typedef enum _FILE_INFORMATION_CLASS {
FileMaximumInformation
} FILE_INFORMATION_CLASS, *PFILE_INFORMATION_CLASS;
typedef struct _SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION {
LARGE_INTEGER IdleTime;
LARGE_INTEGER KernelTime;
LARGE_INTEGER UserTime;
LARGE_INTEGER DpcTime;
LARGE_INTEGER InterruptTime;
ULONG InterruptCount;
} SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION, *PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION;
#ifndef SystemProcessorPerformanceInformation
# define SystemProcessorPerformanceInformation 8
#endif
#ifndef DEVICE_TYPE
# define DEVICE_TYPE DWORD
#endif
@ -4318,6 +4331,12 @@ typedef NTSTATUS (NTAPI *sNtSetInformationFile)
ULONG Length,
FILE_INFORMATION_CLASS FileInformationClass);
typedef NTSTATUS (NTAPI *sNtQuerySystemInformation)
(UINT SystemInformationClass,
PVOID SystemInformation,
ULONG SystemInformationLength,
PULONG ReturnLength);
/*
* Kernel32 headers
@ -4405,6 +4424,7 @@ extern sRtlNtStatusToDosError pRtlNtStatusToDosError;
extern sNtDeviceIoControlFile pNtDeviceIoControlFile;
extern sNtQueryInformationFile pNtQueryInformationFile;
extern sNtSetInformationFile pNtSetInformationFile;
extern sNtQuerySystemInformation pNtQuerySystemInformation;
/* Kernel32 function pointers */