diff options
Diffstat (limited to 'mysys/my_mmap.c')
| -rw-r--r-- | mysys/my_mmap.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/mysys/my_mmap.c b/mysys/my_mmap.c index 303d8efaf30..82ee1562bc2 100644 --- a/mysys/my_mmap.c +++ b/mysys/my_mmap.c @@ -38,13 +38,16 @@ void *my_mmap(void *addr, size_t len, int prot, HANDLE hFileMap; LPVOID ptr; HANDLE hFile= (HANDLE)my_get_osfhandle(fd); + DBUG_ENTER("my_mmap"); + DBUG_PRINT("mysys", ("map fd: %d", fd)); + if (hFile == INVALID_HANDLE_VALUE) - return MAP_FAILED; + DBUG_RETURN(MAP_FAILED); hFileMap=CreateFileMapping(hFile, &mmap_security_attributes, PAGE_READWRITE, 0, (DWORD) len, NULL); if (hFileMap == 0) - return MAP_FAILED; + DBUG_RETURN(MAP_FAILED); ptr=MapViewOfFile(hFileMap, prot & PROT_WRITE ? FILE_MAP_WRITE : FILE_MAP_READ, @@ -59,14 +62,19 @@ void *my_mmap(void *addr, size_t len, int prot, CloseHandle(hFileMap); if (ptr) - return ptr; + { + DBUG_PRINT("mysys", ("mapped addr: %p", ptr)); + DBUG_RETURN(ptr); + } - return MAP_FAILED; + DBUG_RETURN(MAP_FAILED); } int my_munmap(void *addr, size_t len) { - return UnmapViewOfFile(addr) ? 0 : -1; + DBUG_ENTER("my_munmap"); + DBUG_PRINT("mysys", ("unmap addr: %p", addr)); + DBUG_RETURN(UnmapViewOfFile(addr) ? 0 : -1); } int my_msync(int fd, void *addr, size_t len, int flags) |