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test-drop-caches: simplify delay loading of NtSetSystemInformation

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Take advantage of the recent addition of support for lazy loading functions[1]
on Windows to simplify the loading of NtSetSystemInformation.

[1] db2f7c48cb (Win32: simplify loading of DLL functions, 2017-09-25)

Signed-off-by: Ben Peart <benpeart@microsoft.com>
Reviewed-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ben Peart 2018-05-01 12:46:22 +00:00 committed by Junio C Hamano
parent 1f1cddd558
commit 447ed832e5
1 changed files with 4 additions and 12 deletions
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16
t/helper/test-drop-caches.c
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@ -2,6 +2,7 @@
#include "git-compat-util.h"
#if defined(GIT_WINDOWS_NATIVE)
#include "lazyload.h"
static int cmd_sync(void)
{
@ -82,8 +83,7 @@ static int cmd_dropcaches(void)
{
HANDLE hProcess = GetCurrentProcess();
HANDLE hToken;
HMODULE ntdll;
DWORD(WINAPI *NtSetSystemInformation)(INT, PVOID, ULONG);
DECLARE_PROC_ADDR(ntdll.dll, DWORD, NtSetSystemInformation, INT, PVOID, ULONG);
SYSTEM_MEMORY_LIST_COMMAND command;
int status;
@ -95,14 +95,8 @@ static int cmd_dropcaches(void)
CloseHandle(hToken);
ntdll = LoadLibrary("ntdll.dll");
if (!ntdll)
return error("Can't load ntdll.dll, wrong Windows version?");
NtSetSystemInformation =
(DWORD(WINAPI *)(INT, PVOID, ULONG))GetProcAddress(ntdll, "NtSetSystemInformation");
if (!NtSetSystemInformation)
return error("Can't get function addresses, wrong Windows version?");
if (!INIT_PROC_ADDR(NtSetSystemInformation))
return error("Could not find NtSetSystemInformation() function");
command = MemoryPurgeStandbyList;
status = NtSetSystemInformation(
@ -115,8 +109,6 @@ static int cmd_dropcaches(void)
else if (status != STATUS_SUCCESS)
error("Unable to execute the memory list command %d", status);
FreeLibrary(ntdll);
return status;
}