C6335
警告 C6335:泄漏进程信息句柄 <handlename>
此警告意味着需要使用 CloseHandle 来关闭 CreateProcess 系列函数所返回的进程信息句柄。 否则,将导致句柄泄漏。
示例
下面的代码生成此警告:
#include <windows.h>
#include <stdio.h>
void f( )
{
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
ZeroMemory( &pi, sizeof(pi) );
// Start the child process.
if( !CreateProcess( "C:\\WINDOWS\\system32\\calc.exe",
NULL,
NULL,
NULL,
FALSE,
0,
NULL,
NULL,
&si, // Pointer to STARTUPINFO structure.
&pi ) ) // Pointer to PROCESS_INFORMATION
{
puts("Error");
return;
}
// Wait until child process exits.
WaitForSingleObject( pi.hProcess, INFINITE );
CloseHandle( pi.hProcess );
}
若要更正此警告,请调用 CloseHandle (pi. hThread) 来关闭线程句柄,如下面的代码所示:
#include <windows.h>
#include <stdio.h>
void f( )
{
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
ZeroMemory( &pi, sizeof(pi) );
// Start the child process.
if( !CreateProcess( "C:\\WINDOWS\\system32\\calc.exe",
NULL,
NULL,
NULL,
FALSE,
0,
NULL,
NULL,
&si, // Pointer to STARTUPINFO structure.
&pi ) ) // Pointer to PROCESS_INFORMATION
{
puts("Error");
return;
}
// Wait until child process exits.
WaitForSingleObject( pi.hProcess, INFINITE );
CloseHandle( pi.hProcess );
CloseHandle( pi.hThread );
}
有关更多信息,请参见 CreateProcess Function(CreateProcess 函数)和 CloseHandle Function(CloseHandle 函数)。