diff options
Diffstat (limited to 'third_party/git/t/helper/test-drop-caches.c')
| -rw-r--r-- | third_party/git/t/helper/test-drop-caches.c | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/third_party/git/t/helper/test-drop-caches.c b/third_party/git/t/helper/test-drop-caches.c deleted file mode 100644 index 7b4278462bb7..000000000000 --- a/third_party/git/t/helper/test-drop-caches.c +++ /dev/null @@ -1,160 +0,0 @@ -#include "test-tool.h" -#include "git-compat-util.h" - -#if defined(GIT_WINDOWS_NATIVE) -#include "lazyload.h" - -static int cmd_sync(void) -{ - char Buffer[MAX_PATH]; - DWORD dwRet; - char szVolumeAccessPath[] = "\\\\.\\XXXX:"; - HANDLE hVolWrite; - int success = 0, dos_drive_prefix; - - dwRet = GetCurrentDirectory(MAX_PATH, Buffer); - if ((0 == dwRet) || (dwRet > MAX_PATH)) - return error("Error getting current directory"); - - dos_drive_prefix = has_dos_drive_prefix(Buffer); - if (!dos_drive_prefix) - return error("'%s': invalid drive letter", Buffer); - - memcpy(szVolumeAccessPath, Buffer, dos_drive_prefix); - szVolumeAccessPath[dos_drive_prefix] = '\0'; - - hVolWrite = CreateFile(szVolumeAccessPath, GENERIC_READ | GENERIC_WRITE, - FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL); - if (INVALID_HANDLE_VALUE == hVolWrite) - return error("Unable to open volume for writing, need admin access"); - - success = FlushFileBuffers(hVolWrite); - if (!success) - error("Unable to flush volume"); - - CloseHandle(hVolWrite); - - return !success; -} - -#define STATUS_SUCCESS (0x00000000L) -#define STATUS_PRIVILEGE_NOT_HELD (0xC0000061L) - -typedef enum _SYSTEM_INFORMATION_CLASS { - SystemMemoryListInformation = 80, -} SYSTEM_INFORMATION_CLASS; - -typedef enum _SYSTEM_MEMORY_LIST_COMMAND { - MemoryCaptureAccessedBits, - MemoryCaptureAndResetAccessedBits, - MemoryEmptyWorkingSets, - MemoryFlushModifiedList, - MemoryPurgeStandbyList, - MemoryPurgeLowPriorityStandbyList, - MemoryCommandMax -} SYSTEM_MEMORY_LIST_COMMAND; - -static BOOL GetPrivilege(HANDLE TokenHandle, LPCSTR lpName, int flags) -{ - BOOL bResult; - DWORD dwBufferLength; - LUID luid; - TOKEN_PRIVILEGES tpPreviousState; - TOKEN_PRIVILEGES tpNewState; - - dwBufferLength = 16; - bResult = LookupPrivilegeValueA(0, lpName, &luid); - if (bResult) { - tpNewState.PrivilegeCount = 1; - tpNewState.Privileges[0].Luid = luid; - tpNewState.Privileges[0].Attributes = 0; - bResult = AdjustTokenPrivileges(TokenHandle, 0, &tpNewState, - (DWORD)((LPBYTE)&(tpNewState.Privileges[1]) - (LPBYTE)&tpNewState), - &tpPreviousState, &dwBufferLength); - if (bResult) { - tpPreviousState.PrivilegeCount = 1; - tpPreviousState.Privileges[0].Luid = luid; - tpPreviousState.Privileges[0].Attributes = flags != 0 ? 2 : 0; - bResult = AdjustTokenPrivileges(TokenHandle, 0, &tpPreviousState, - dwBufferLength, 0, 0); - } - } - return bResult; -} - -static int cmd_dropcaches(void) -{ - HANDLE hProcess = GetCurrentProcess(); - HANDLE hToken; - DECLARE_PROC_ADDR(ntdll.dll, DWORD, NtSetSystemInformation, INT, PVOID, ULONG); - SYSTEM_MEMORY_LIST_COMMAND command; - int status; - - if (!OpenProcessToken(hProcess, TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, &hToken)) - return error("Can't open current process token"); - - if (!GetPrivilege(hToken, "SeProfileSingleProcessPrivilege", 1)) - return error("Can't get SeProfileSingleProcessPrivilege"); - - CloseHandle(hToken); - - if (!INIT_PROC_ADDR(NtSetSystemInformation)) - return error("Could not find NtSetSystemInformation() function"); - - command = MemoryPurgeStandbyList; - status = NtSetSystemInformation( - SystemMemoryListInformation, - &command, - sizeof(SYSTEM_MEMORY_LIST_COMMAND) - ); - if (status == STATUS_PRIVILEGE_NOT_HELD) - error("Insufficient privileges to purge the standby list, need admin access"); - else if (status != STATUS_SUCCESS) - error("Unable to execute the memory list command %d", status); - - return status; -} - -#elif defined(__linux__) - -static int cmd_sync(void) -{ - return system("sync"); -} - -static int cmd_dropcaches(void) -{ - return system("echo 3 | sudo tee /proc/sys/vm/drop_caches"); -} - -#elif defined(__APPLE__) - -static int cmd_sync(void) -{ - return system("sync"); -} - -static int cmd_dropcaches(void) -{ - return system("sudo purge"); -} - -#else - -static int cmd_sync(void) -{ - return 0; -} - -static int cmd_dropcaches(void) -{ - return error("drop caches not implemented on this platform"); -} - -#endif - -int cmd__drop_caches(int argc, const char **argv) -{ - cmd_sync(); - return cmd_dropcaches(); -} |