diff options
Diffstat (limited to 'dep/mysqllite/mysys/my_conio.c')
| -rw-r--r-- | dep/mysqllite/mysys/my_conio.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/dep/mysqllite/mysys/my_conio.c b/dep/mysqllite/mysys/my_conio.c deleted file mode 100644 index 5dbd31193a9..00000000000 --- a/dep/mysqllite/mysys/my_conio.c +++ /dev/null @@ -1,222 +0,0 @@ -/* Copyright (C) 2000 MySQL AB - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; version 2 of the License. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - - -#include "mysys_priv.h" - -#ifdef __WIN__ - -static HANDLE my_coninpfh= 0; /* console input */ - -/* - functions my_pthread_auto_mutex_lock & my_pthread_auto_mutex_free - are experimental at this moment, they are intended to bring - ability of protecting code sections without necessity to explicitly - initialize synchronization object in one of threads - - if found useful they are to be exported in mysys -*/ - - -/* - int my_pthread_auto_mutex_lock(HANDLE* ph, const char* name, - int id, int time) - NOTES - creates a mutex with given name and tries to lock it time msec. - mutex name is appended with id to allow system wide or process wide - locks. Handle to created mutex returned in ph argument. - - RETURN - 0 thread owns mutex - <>0 error -*/ - -static -int my_pthread_auto_mutex_lock(HANDLE* ph, const char* name, int id, int time) -{ - int res; - char tname[FN_REFLEN]; - - sprintf(tname, "%s-%08X", name, id); - - *ph= CreateMutex(NULL, FALSE, tname); - if (*ph == NULL) - return GetLastError(); - - res= WaitForSingleObject(*ph, time); - - if (res == WAIT_TIMEOUT) - return ERROR_SEM_TIMEOUT; - - if (res == WAIT_FAILED) - return GetLastError(); - - return 0; -} - -/* - int my_pthread_auto_mutex_free(HANDLE* ph) - - NOTES - releases a mutex. - - RETURN - 0 thread released mutex - <>0 error - -*/ -static -int my_pthread_auto_mutex_free(HANDLE* ph) -{ - if (*ph) - { - ReleaseMutex(*ph); - CloseHandle(*ph); - *ph= NULL; - } - - return 0; -} - - -#define pthread_auto_mutex_decl(name) \ - HANDLE __h##name= NULL; - -#define pthread_auto_mutex_lock(name, proc, time) \ - my_pthread_auto_mutex_lock(&__h##name, #name, (proc), (time)) - -#define pthread_auto_mutex_free(name) \ - my_pthread_auto_mutex_free(&__h##name) - - -/* - char* my_cgets() - - NOTES - Replaces _cgets from libc to support input of more than 255 chars. - Reads from the console via ReadConsole into buffer which - should be at least clen characters. - Actual length of string returned in plen. - - WARNING - my_cgets() does NOT check the pushback character buffer (i.e., _chbuf). - Thus, my_cgets() will not return any character that is pushed back by - the _ungetch() call. - - RETURN - string pointer ok - NULL Error - -*/ - -char* my_cgets(char *buffer, size_t clen, size_t* plen) -{ - ULONG state; - char *result; - DWORD plen_res; - CONSOLE_SCREEN_BUFFER_INFO csbi; - - pthread_auto_mutex_decl(my_conio_cs); - - /* lock the console for the current process*/ - if (pthread_auto_mutex_lock(my_conio_cs, GetCurrentProcessId(), INFINITE)) - { - /* can not lock console */ - pthread_auto_mutex_free(my_conio_cs); - return NULL; - } - - /* init console input */ - if (my_coninpfh == 0) - { - /* same handle will be used until process termination */ - my_coninpfh= CreateFile("CONIN$", GENERIC_READ | GENERIC_WRITE, - FILE_SHARE_READ | FILE_SHARE_WRITE, - NULL, OPEN_EXISTING, 0, NULL); - } - - if (my_coninpfh == INVALID_HANDLE_VALUE) - { - /* unlock the console */ - pthread_auto_mutex_free(my_conio_cs); - return(NULL); - } - - GetConsoleMode((HANDLE)my_coninpfh, &state); - SetConsoleMode((HANDLE)my_coninpfh, ENABLE_LINE_INPUT | - ENABLE_PROCESSED_INPUT | ENABLE_ECHO_INPUT); - - GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi); - - /* - there is no known way to determine allowed buffer size for input - though it is known it should not be more than 64K - so we cut 64K and try first size of screen buffer - if it is still to large we cut half of it and try again - later we may want to cycle from min(clen, 65535) to allowed size - with small decrement to determine exact allowed buffer - */ - clen= min(clen, 65535); - do - { - clen= min(clen, (size_t) csbi.dwSize.X*csbi.dwSize.Y); - if (!ReadConsole((HANDLE)my_coninpfh, (LPVOID)buffer, (DWORD) clen - 1, &plen_res, - NULL)) - { - result= NULL; - clen>>= 1; - } - else - { - result= buffer; - break; - } - } - while (GetLastError() == ERROR_NOT_ENOUGH_MEMORY); - *plen= plen_res; - - /* We go here on error reading the string (Ctrl-C for example) */ - if (!*plen) - result= NULL; /* purecov: inspected */ - - if (result != NULL) - { - if (*plen > 1 && buffer[*plen - 2] == '\r') - { - *plen= *plen - 2; - } - else - { - if (*plen > 0 && buffer[*plen - 1] == '\r') - { - char tmp[3]; - int tmplen= sizeof(tmp); - - *plen= *plen - 1; - /* read /n left in the buffer */ - ReadConsole((HANDLE)my_coninpfh, (LPVOID)tmp, tmplen, &tmplen, NULL); - } - } - buffer[*plen]= '\0'; - } - - SetConsoleMode((HANDLE)my_coninpfh, state); - /* unlock the console */ - pthread_auto_mutex_free(my_conio_cs); - - return result; -} - -#endif /* __WIN__ */ |