APR_DECLARE(apr_status_t) apr_proc_mutex_child_init(apr_proc_mutex_t **mutex,
const char *fname,
apr_pool_t *pool)
{
HANDLE hMutex;
void *mutexkey;
if (!fname) {
/* Reinitializing unnamed mutexes is a noop in the Unix code. */
return APR_SUCCESS;
}
/* res_name_from_filename turns file into a pseudo-name
* without slashes or backslashes, and prepends the \global
* prefix on Win2K and later
*/
mutexkey = res_name_from_filename(fname, 1, pool);
#if defined(_WIN32_WCE)
hMutex = CreateMutex(NULL, FALSE, mutexkey);
if (hMutex && ERROR_ALREADY_EXISTS != GetLastError()) {
CloseHandle(hMutex);
hMutex = NULL;
SetLastError(ERROR_FILE_NOT_FOUND);
}
#else
#if APR_HAS_UNICODE_FS
IF_WIN_OS_IS_UNICODE
{
hMutex = OpenMutexW(MUTEX_ALL_ACCESS, FALSE, mutexkey);
}
#endif
#if APR_HAS_ANSI_FS
ELSE_WIN_OS_IS_ANSI
{
hMutex = OpenMutexA(MUTEX_ALL_ACCESS, FALSE, mutexkey);
}
#endif
#endif
if (!hMutex) {
return apr_get_os_error();
}
*mutex = (apr_proc_mutex_t *)apr_palloc(pool, sizeof(apr_proc_mutex_t));
(*mutex)->pool = pool;
(*mutex)->handle = hMutex;
(*mutex)->fname = fname;
apr_pool_cleanup_register((*mutex)->pool, *mutex,
proc_mutex_cleanup, apr_pool_cleanup_null);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_proc_mutex_create(apr_proc_mutex_t **mutex,
const char *fname,
apr_lockmech_e mech,
apr_pool_t *pool)
{
HANDLE hMutex;
void *mutexkey;
if (mech != APR_LOCK_DEFAULT) {
return APR_ENOTIMPL;
}
/* res_name_from_filename turns fname into a pseduo-name
* without slashes or backslashes, and prepends the \global
* prefix on Win2K and later
*/
if (fname) {
mutexkey = res_name_from_filename(fname, 1, pool);
}
else {
mutexkey = NULL;
}
#if APR_HAS_UNICODE_FS
IF_WIN_OS_IS_UNICODE
{
hMutex = CreateMutexW(NULL, FALSE, mutexkey);
}
#endif
#if APR_HAS_ANSI_FS
ELSE_WIN_OS_IS_ANSI
{
hMutex = CreateMutexA(NULL, FALSE, mutexkey);
}
#endif
if (!hMutex) {
return apr_get_os_error();
}
*mutex = (apr_proc_mutex_t *)apr_palloc(pool, sizeof(apr_proc_mutex_t));
(*mutex)->pool = pool;
(*mutex)->handle = hMutex;
(*mutex)->fname = fname;
apr_pool_cleanup_register((*mutex)->pool, *mutex,
proc_mutex_cleanup, apr_pool_cleanup_null);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_shm_create(apr_shm_t **m,
apr_size_t reqsize,
const char *file,
apr_pool_t *pool)
{
static apr_size_t memblock = 0;
HANDLE hMap, hFile;
apr_status_t rv;
apr_size_t size;
apr_file_t *f;
void *base;
void *mapkey;
DWORD err, sizelo, sizehi;
reqsize += sizeof(memblock_t);
if (!memblock)
{
SYSTEM_INFO si;
GetSystemInfo(&si);
memblock = si.dwAllocationGranularity;
}
/* Compute the granualar multiple of the pagesize */
size = memblock * (1 + (reqsize - 1) / memblock);
sizelo = (DWORD)size;
#ifdef _WIN64
sizehi = (DWORD)(size >> 32);
#else
sizehi = 0;
#endif
if (!file) {
/* Do Anonymous, which must be passed as a duplicated handle */
#ifndef _WIN32_WCE
hFile = INVALID_HANDLE_VALUE;
#endif
mapkey = NULL;
}
else {
/* Do file backed, which is not an inherited handle
* While we could open APR_EXCL, it doesn't seem that Unix
* ever did. Ignore that error here, but fail later when
* we discover we aren't the creator of the file map object.
*/
rv = apr_file_open(&f, file,
APR_READ | APR_WRITE | APR_BINARY | APR_CREATE,
APR_UREAD | APR_UWRITE, pool);
if ((rv != APR_SUCCESS)
|| ((rv = apr_os_file_get(&hFile, f)) != APR_SUCCESS)) {
return rv;
}
rv = apr_file_trunc(f, size);
/* res_name_from_filename turns file into a pseudo-name
* without slashes or backslashes, and prepends the \global
* prefix on Win2K and later
*/
mapkey = res_name_from_filename(file, 1, pool);
}
#if APR_HAS_UNICODE_FS
IF_WIN_OS_IS_UNICODE
{
hMap = CreateFileMappingW(hFile, NULL, PAGE_READWRITE,
sizehi, sizelo, mapkey);
}
#endif
#if APR_HAS_ANSI_FS
ELSE_WIN_OS_IS_ANSI
{
hMap = CreateFileMappingA(hFile, NULL, PAGE_READWRITE,
sizehi, sizelo, mapkey);
}
#endif
err = apr_get_os_error();
if (file) {
apr_file_close(f);
}
if (hMap && APR_STATUS_IS_EEXIST(err)) {
CloseHandle(hMap);
return APR_EEXIST;
}
if (!hMap) {
return err;
}
base = MapViewOfFile(hMap, FILE_MAP_READ | FILE_MAP_WRITE,
0, 0, size);
if (!base) {
CloseHandle(hMap);
return apr_get_os_error();
}
*m = (apr_shm_t *) apr_palloc(pool, sizeof(apr_shm_t));
(*m)->pool = pool;
(*m)->hMap = hMap;
(*m)->memblk = base;
(*m)->size = size;
(*m)->usrmem = (char*)base + sizeof(memblock_t);
(*m)->length = reqsize - sizeof(memblock_t);;
(*m)->memblk->length = (*m)->length;
(*m)->memblk->size = (*m)->size;
(*m)->filename = file ? apr_pstrdup(pool, file) : NULL;
apr_pool_cleanup_register((*m)->pool, *m,
shm_cleanup, apr_pool_cleanup_null);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_shm_attach(apr_shm_t **m,
const char *file,
apr_pool_t *pool)
{
HANDLE hMap;
void *mapkey;
void *base;
if (!file) {
return APR_EINVAL;
}
else {
/* res_name_from_filename turns file into a pseudo-name
* without slashes or backslashes, and prepends the \global
* prefix on Win2K and later
*/
mapkey = res_name_from_filename(file, 1, pool);
}
#if APR_HAS_UNICODE_FS
IF_WIN_OS_IS_UNICODE
{
#ifndef _WIN32_WCE
hMap = OpenFileMappingW(FILE_MAP_READ | FILE_MAP_WRITE, FALSE, mapkey);
#else
/* The WCE 3.0 lacks OpenFileMapping. So we emulate one with
* opening the existing shmem and reading its size from the header
*/
hMap = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL,
PAGE_READWRITE, 0, sizeof(apr_shm_t), mapkey);
#endif
}
#endif
#if APR_HAS_ANSI_FS
ELSE_WIN_OS_IS_ANSI
{
hMap = OpenFileMappingA(FILE_MAP_READ | FILE_MAP_WRITE, FALSE, mapkey);
}
#endif
if (!hMap) {
return apr_get_os_error();
}
base = MapViewOfFile(hMap, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0);
if (!base) {
CloseHandle(hMap);
return apr_get_os_error();
}
*m = (apr_shm_t *) apr_palloc(pool, sizeof(apr_shm_t));
(*m)->pool = pool;
(*m)->memblk = base;
/* Real (*m)->mem->size could be recovered with VirtualQuery */
(*m)->size = (*m)->memblk->size;
#if _WIN32_WCE
/* Reopen with real size */
UnmapViewOfFile(base);
CloseHandle(hMap);
hMap = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL,
PAGE_READWRITE, 0, (*m)->size, mapkey);
if (!hMap) {
return apr_get_os_error();
}
base = MapViewOfFile(hMap, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0);
if (!base) {
CloseHandle(hMap);
return apr_get_os_error();
}
#endif
(*m)->hMap = hMap;
(*m)->length = (*m)->memblk->length;
(*m)->usrmem = (char*)base + sizeof(memblock_t);
(*m)->filename = NULL;
apr_pool_cleanup_register((*m)->pool, *m,
shm_cleanup, apr_pool_cleanup_null);
return APR_SUCCESS;
}
