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[TASKMGR] Handles: Get number only, skip data

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Serge Gautherie 2021-08-11 16:57:21 +02:00 • committed by Stanislav Motylkov
parent 4689c8ead8
commit 515e0cf38f
1 changed files with 11 additions and 20 deletions
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31
base/applications/taskmgr/perfdata.c
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@ -44,7 +44,7 @@ LARGE_INTEGER liOldSystemTime = {{0,0}};
SYSTEM_PERFORMANCE_INFORMATION SystemPerfInfo; SYSTEM_PERFORMANCE_INFORMATION SystemPerfInfo;
SYSTEM_BASIC_INFORMATION SystemBasicInfo; SYSTEM_BASIC_INFORMATION SystemBasicInfo;
SYSTEM_FILECACHE_INFORMATION SystemCacheInfo; SYSTEM_FILECACHE_INFORMATION SystemCacheInfo;
SYSTEM_HANDLE_INFORMATION SystemHandleInfo; ULONG SystemNumberOfHandles;
PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION SystemProcessorTimeInfo = NULL; PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION SystemProcessorTimeInfo = NULL;
PSID SystemUserSid = NULL; PSID SystemUserSid = NULL;
@ -186,7 +186,7 @@ void PerfDataRefresh(void)
SYSTEM_PERFORMANCE_INFORMATION SysPerfInfo; SYSTEM_PERFORMANCE_INFORMATION SysPerfInfo;
SYSTEM_TIMEOFDAY_INFORMATION SysTimeInfo; SYSTEM_TIMEOFDAY_INFORMATION SysTimeInfo;
SYSTEM_FILECACHE_INFORMATION SysCacheInfo; SYSTEM_FILECACHE_INFORMATION SysCacheInfo;
LPBYTE SysHandleInfoData; SYSTEM_HANDLE_INFORMATION SysHandleInfoData;
PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION SysProcessorTimeInfo; PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION SysProcessorTimeInfo;
double CurrentKernelTime; double CurrentKernelTime;
PSECURITY_DESCRIPTOR ProcessSD; PSECURITY_DESCRIPTOR ProcessSD;
@ -221,22 +221,14 @@ void PerfDataRefresh(void)
} }
/* Get handle information /* Get handle information
* We don't know how much data there is so just keep * Number of handles is enough, no need for data array.
* increasing the buffer size until the call succeeds
*/ */
BufferSize = 0; status = NtQuerySystemInformation(SystemHandleInformation, &SysHandleInfoData, sizeof(SysHandleInfoData), NULL);
do /* On unexpected error, reuse previous value.
{ * STATUS_SUCCESS (0-1 handle) should never happen.
BufferSize += 0x10000; */
SysHandleInfoData = (LPBYTE)HeapAlloc(GetProcessHeap(), 0, BufferSize); if (status != STATUS_INFO_LENGTH_MISMATCH)
SysHandleInfoData.NumberOfHandles = SystemNumberOfHandles;
status = NtQuerySystemInformation(SystemHandleInformation, SysHandleInfoData, BufferSize, &ulSize);
if (status == STATUS_INFO_LENGTH_MISMATCH) {
HeapFree(GetProcessHeap(), 0, SysHandleInfoData);
}
} while (status == STATUS_INFO_LENGTH_MISMATCH);
/* Get process information /* Get process information
* We don't know how much data there is so just keep * We don't know how much data there is so just keep
@ -279,8 +271,7 @@ void PerfDataRefresh(void)
/* /*
* Save system handle info * Save system handle info
*/ */
memcpy(&SystemHandleInfo, SysHandleInfoData, sizeof(SYSTEM_HANDLE_INFORMATION)); SystemNumberOfHandles = SysHandleInfoData.NumberOfHandles;
HeapFree(GetProcessHeap(), 0, SysHandleInfoData);
for (CurrentKernelTime=0, Idx=0; Idx<(ULONG)SystemBasicInfo.NumberOfProcessors; Idx++) { for (CurrentKernelTime=0, Idx=0; Idx<(ULONG)SystemBasicInfo.NumberOfProcessors; Idx++) {
CurrentKernelTime += Li2Double(SystemProcessorTimeInfo[Idx].KernelTime); CurrentKernelTime += Li2Double(SystemProcessorTimeInfo[Idx].KernelTime);
@ -1106,7 +1097,7 @@ ULONG PerfDataGetSystemHandleCount(void)
EnterCriticalSection(&PerfDataCriticalSection); EnterCriticalSection(&PerfDataCriticalSection);
HandleCount = SystemHandleInfo.NumberOfHandles; HandleCount = SystemNumberOfHandles;
LeaveCriticalSection(&PerfDataCriticalSection); LeaveCriticalSection(&PerfDataCriticalSection);