wine/scheduler/mutex.c
Alexandre Julliard ebe29ef376 Further server optimizations:
- merged request and reply structures
- build requests directly into the buffer to avoid a copy
1999-06-26 08:43:26 +00:00

81 lines
2.3 KiB
C

/*
* Win32 mutexes
*
* Copyright 1998 Alexandre Julliard
*/
#include <assert.h>
#include <string.h>
#include "winerror.h"
#include "heap.h"
#include "server.h"
/***********************************************************************
* CreateMutex32A (KERNEL32.166)
*/
HANDLE WINAPI CreateMutexA( SECURITY_ATTRIBUTES *sa, BOOL owner, LPCSTR name )
{
struct create_mutex_request *req = get_req_buffer();
req->owned = owner;
req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
lstrcpynA( req->name, name ? name : "", server_remaining(req->name) );
SetLastError(0);
server_call( REQ_CREATE_MUTEX );
if (req->handle == -1) return 0;
return req->handle;
}
/***********************************************************************
* CreateMutex32W (KERNEL32.167)
*/
HANDLE WINAPI CreateMutexW( SECURITY_ATTRIBUTES *sa, BOOL owner,
LPCWSTR name )
{
LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
HANDLE ret = CreateMutexA( sa, owner, nameA );
if (nameA) HeapFree( GetProcessHeap(), 0, nameA );
return ret;
}
/***********************************************************************
* OpenMutex32A (KERNEL32.541)
*/
HANDLE WINAPI OpenMutexA( DWORD access, BOOL inherit, LPCSTR name )
{
struct open_mutex_request *req = get_req_buffer();
req->access = access;
req->inherit = inherit;
lstrcpynA( req->name, name ? name : "", server_remaining(req->name) );
server_call( REQ_OPEN_MUTEX );
if (req->handle == -1) return 0; /* must return 0 on failure, not -1 */
return req->handle;
}
/***********************************************************************
* OpenMutex32W (KERNEL32.542)
*/
HANDLE WINAPI OpenMutexW( DWORD access, BOOL inherit, LPCWSTR name )
{
LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
HANDLE ret = OpenMutexA( access, inherit, nameA );
if (nameA) HeapFree( GetProcessHeap(), 0, nameA );
return ret;
}
/***********************************************************************
* ReleaseMutex (KERNEL32.582)
*/
BOOL WINAPI ReleaseMutex( HANDLE handle )
{
struct release_mutex_request *req = get_req_buffer();
req->handle = handle;
return !server_call( REQ_RELEASE_MUTEX );
}