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- /***************************************************************************
- * Copyright (C) 2006 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * Copyright (C) 2007,2008 Øyvind Harboe *
- * oyvind.harboe@zylin.com *
- * *
- * Copyright (C) 2008 by Spencer Oliver *
- * spen@spen-soft.co.uk *
- * *
- * 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; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * 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. *
- ***************************************************************************/
- /* DANGER!!!! These must be defined *BEFORE* replacements.h and the malloc() macro!!!! */
-
- #include <stdlib.h>
- #include <string.h>
- /*
- * clear_malloc
- *
- * will alloc memory and clear it
- */
- void *clear_malloc(size_t size)
- {
- void *t = malloc(size);
- if (t != NULL)
- {
- memset(t, 0x00, size);
- }
- return t;
- }
-
- void *fill_malloc(size_t size)
- {
- void *t = malloc(size);
- if (t != NULL)
- {
- /* We want to initialize memory to some known bad state. */
- /* 0 and 0xff yields 0 and -1 as integers, which often */
- /* have meaningful values. 0x5555... is not often a valid */
- /* integer and is quite easily spotted in the debugger */
- /* also it is almost certainly an invalid address */
- memset(t, 0x55, size);
- }
- return t;
- }
-
- #define IN_REPLACEMENTS_C
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
- #ifdef HAVE_STRINGS_H
- #include <strings.h>
- #endif
-
- #ifdef _WIN32
- #include <io.h>
- #endif
-
- /* replacements for gettimeofday */
- #ifndef HAVE_GETTIMEOFDAY
-
- /* Windows */
- #ifdef _WIN32
-
- #ifndef __GNUC__
- #define EPOCHFILETIME (116444736000000000i64)
- #else
- #define EPOCHFILETIME (116444736000000000LL)
- #endif
-
- int gettimeofday(struct timeval *tv, struct timezone *tz)
- {
- FILETIME ft;
- LARGE_INTEGER li;
- __int64 t;
- static int tzflag;
-
- if (tv)
- {
- GetSystemTimeAsFileTime(&ft);
- li.LowPart = ft.dwLowDateTime;
- li.HighPart = ft.dwHighDateTime;
- t = li.QuadPart; /* In 100-nanosecond intervals */
- t -= EPOCHFILETIME; /* Offset to the Epoch time */
- t /= 10; /* In microseconds */
- tv->tv_sec = (long)(t / 1000000);
- tv->tv_usec = (long)(t % 1000000);
- }
-
- if (tz)
- {
- if (!tzflag)
- {
- _tzset();
- tzflag++;
- }
- tz->tz_minuteswest = _timezone / 60;
- tz->tz_dsttime = _daylight;
- }
-
- return 0;
- }
- #endif /* _WIN32 */
-
- #endif /* HAVE_GETTIMEOFDAY */
-
- #ifndef HAVE_STRNLEN
- size_t strnlen(const char *s, size_t maxlen)
- {
- const char *end= (const char *)memchr(s, '\0', maxlen);
- return end ? (size_t) (end - s) : maxlen;
- }
- #endif
-
- #ifndef HAVE_STRNDUP
- char* strndup(const char *s, size_t n)
- {
- size_t len = strnlen (s, n);
- char *new = (char *) malloc (len + 1);
-
- if (new == NULL)
- return NULL;
-
- new[len] = '\0';
- return (char *) memcpy (new, s, len);
- }
- #endif
-
- #ifdef _WIN32
- int win_select(int max_fd, fd_set *rfds, fd_set *wfds, fd_set *efds, struct timeval *tv)
- {
- DWORD ms_total, limit;
- HANDLE handles[MAXIMUM_WAIT_OBJECTS];
- int handle_slot_to_fd[MAXIMUM_WAIT_OBJECTS];
- int n_handles = 0, i;
- fd_set sock_read, sock_write, sock_except;
- fd_set aread, awrite, aexcept;
- int sock_max_fd = -1;
- struct timeval tvslice;
- int retcode;
-
- #define SAFE_FD_ISSET(fd, set) (set != NULL && FD_ISSET(fd, set))
-
- /* calculate how long we need to wait in milliseconds */
- if (tv == NULL) {
- ms_total = INFINITE;
- } else {
- ms_total = tv->tv_sec * 1000;
- ms_total += tv->tv_usec / 1000;
- }
-
- FD_ZERO(&sock_read);
- FD_ZERO(&sock_write);
- FD_ZERO(&sock_except);
-
- /* build an array of handles for non-sockets */
- for (i = 0; i < max_fd; i++) {
- if (SAFE_FD_ISSET(i, rfds) || SAFE_FD_ISSET(i, wfds) || SAFE_FD_ISSET(i, efds)) {
- long handle = _get_osfhandle(i);
- handles[n_handles] = (HANDLE)handle;
- if (handles[n_handles] == INVALID_HANDLE_VALUE) {
- /* socket */
- if (SAFE_FD_ISSET(i, rfds)) {
- FD_SET(i, &sock_read);
- }
- if (SAFE_FD_ISSET(i, wfds)) {
- FD_SET(i, &sock_write);
- }
- if (SAFE_FD_ISSET(i, efds)) {
- FD_SET(i, &sock_except);
- }
- if (i > sock_max_fd) {
- sock_max_fd = i;
- }
- } else {
- handle_slot_to_fd[n_handles] = i;
- n_handles++;
- }
- }
- }
-
- if (n_handles == 0) {
- /* plain sockets only - let winsock handle the whole thing */
- return select(max_fd, rfds, wfds, efds, tv);
- }
-
- /* mixture of handles and sockets; lets multiplex between
- * winsock and waiting on the handles */
-
- FD_ZERO(&aread);
- FD_ZERO(&awrite);
- FD_ZERO(&aexcept);
-
- limit = GetTickCount() + ms_total;
- do {
- retcode = 0;
-
- if (sock_max_fd >= 0) {
- /* overwrite the zero'd sets here; the select call
- * will clear those that are not active */
- aread = sock_read;
- awrite = sock_write;
- aexcept = sock_except;
-
- tvslice.tv_sec = 0;
- tvslice.tv_usec = 100000;
-
- retcode = select(sock_max_fd + 1, &aread, &awrite, &aexcept, &tvslice);
- }
- if (n_handles > 0) {
- /* check handles */
- DWORD wret;
-
- wret = MsgWaitForMultipleObjects(n_handles, handles, FALSE, retcode > 0 ? 0 : 100, QS_ALLEVENTS);
-
- if (wret == WAIT_TIMEOUT) {
- /* set retcode to 0; this is the default.
- * select() may have set it to something else,
- * in which case we leave it alone, so this branch
- * does nothing */
- ;
- } else if (wret == WAIT_FAILED) {
- if (retcode == 0) {
- retcode = -1;
- }
- } else {
- if (retcode < 0) {
- retcode = 0;
- }
- for (i = 0; i < n_handles; i++) {
- if (WAIT_OBJECT_0 == WaitForSingleObject(handles[i], 0)) {
- if (SAFE_FD_ISSET(handle_slot_to_fd[i], rfds)) {
- DWORD dwBytes;
- long handle = _get_osfhandle(handle_slot_to_fd[i]);
-
- if (PeekNamedPipe((HANDLE)handle, NULL, 0, NULL, &dwBytes, NULL))
- {
- /* check to see if gdb pipe has data available */
- if (dwBytes)
- {
- FD_SET(handle_slot_to_fd[i], &aread);
- retcode++;
- }
- }
- else
- {
- FD_SET(handle_slot_to_fd[i], &aread);
- retcode++;
- }
- }
- if (SAFE_FD_ISSET(handle_slot_to_fd[i], wfds)) {
- FD_SET(handle_slot_to_fd[i], &awrite);
- retcode++;
- }
- if (SAFE_FD_ISSET(handle_slot_to_fd[i], efds)) {
- FD_SET(handle_slot_to_fd[i], &aexcept);
- retcode++;
- }
- }
- }
- }
- }
- } while (retcode == 0 && (ms_total == INFINITE || GetTickCount() < limit));
-
- if (rfds) {
- *rfds = aread;
- }
- if (wfds) {
- *wfds = awrite;
- }
- if (efds) {
- *efds = aexcept;
- }
-
- return retcode;
- }
- #endif
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