1 /* This file contains functions which implement those POSIX and Linux functions
2 * that MinGW and Microsoft don't provide. The implementations contain just enough
3 * functionality to support fio.
7 #include <netinet/in.h>
14 #include <semaphore.h>
18 #include <sys/resource.h>
21 #include "../os-windows.h"
23 long sysconf(int name)
27 SYSTEM_LOGICAL_PROCESSOR_INFORMATION processorInfo;
29 MEMORYSTATUSEX status;
33 case _SC_NPROCESSORS_ONLN:
34 len = sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
35 GetLogicalProcessorInformation(&processorInfo, &len);
36 val = len / sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
40 GetSystemInfo(&sysInfo);
41 val = sysInfo.dwPageSize;
45 status.dwLength = sizeof(status);
46 GlobalMemoryStatusEx(&status);
47 val = status.ullTotalPhys;
50 log_err("sysconf(%d) is not implemented\n", name);
57 char *dl_error = NULL;
59 int dlclose(void *handle)
61 return !FreeLibrary((HMODULE)handle);
64 void *dlopen(const char *file, int mode)
68 hMod = LoadLibrary(file);
69 if (hMod == INVALID_HANDLE_VALUE)
70 dl_error = (char*)"LoadLibrary failed";
77 void *dlsym(void *handle, const char *name)
81 fnPtr = GetProcAddress((HMODULE)handle, name);
83 dl_error = (char*)"GetProcAddress failed";
95 int gettimeofday(struct timeval *restrict tp, void *restrict tzp)
98 unsigned long long unix_time, windows_time;
99 const time_t MILLISECONDS_BETWEEN_1601_AND_1970 = 11644473600000;
101 /* Ignore the timezone parameter */
105 * Windows time is stored as the number 100 ns intervals since January 1 1601.
106 * Conversion details from http://www.informit.com/articles/article.aspx?p=102236&seqNum=3
107 * Its precision is 100 ns but accuracy is only one clock tick, or normally around 15 ms.
109 GetSystemTimeAsFileTime(&fileTime);
110 windows_time = ((unsigned long long)fileTime.dwHighDateTime << 32) + fileTime.dwLowDateTime;
111 /* Divide by 10,000 to convert to ms and subtract the time between 1601 and 1970 */
112 unix_time = (((windows_time)/10000) - MILLISECONDS_BETWEEN_1601_AND_1970);
113 /* unix_time is now the number of milliseconds since 1970 (the Unix epoch) */
114 tp->tv_sec = unix_time / 1000;
115 tp->tv_usec = (unix_time % 1000) * 1000;
119 void syslog(int priority, const char *message, ... /* argument */)
121 log_err("%s is not implemented\n", __func__);
124 int sigaction(int sig, const struct sigaction *act,
125 struct sigaction *oact)
128 void (*prev_handler)(int);
130 prev_handler = signal(sig, act->sa_handler);
132 oact->sa_handler = prev_handler;
134 if (prev_handler == SIG_ERR)
140 int lstat(const char * path, struct stat * buf)
142 return stat(path, buf);
145 void *mmap(void *addr, size_t len, int prot, int flags,
146 int fildes, off_t off)
149 void* allocAddr = NULL;
151 if (prot & PROT_NONE)
152 vaProt |= PAGE_NOACCESS;
154 if ((prot & PROT_READ) && !(prot & PROT_WRITE))
155 vaProt |= PAGE_READONLY;
157 if (prot & PROT_WRITE)
158 vaProt |= PAGE_READWRITE;
160 if ((flags & MAP_ANON) | (flags & MAP_ANONYMOUS))
162 allocAddr = VirtualAlloc(addr, len, MEM_COMMIT, vaProt);
168 int munmap(void *addr, size_t len)
170 return !VirtualFree(addr, 0, MEM_RELEASE);
175 log_err("%s is not implemented\n", __func__);
182 log_err("%s is not implemented\n", __func__);
187 void openlog(const char *ident, int logopt, int facility)
189 log_err("%s is not implemented\n", __func__);
194 log_err("%s is not implemented\n", __func__);
197 int kill(pid_t pid, int sig)
204 * This is assumed to be used only by the network code,
205 * and so doesn't try and handle any of the other cases
207 int fcntl(int fildes, int cmd, ...)
210 * non-blocking mode doesn't work the same as in BSD sockets,
215 int val, opt, status;
219 else if (cmd != F_SETFL) {
226 opt = va_arg(ap, int);
227 if (opt & O_NONBLOCK)
232 status = ioctlsocket((SOCKET)fildes, opt, &val);
234 if (status == SOCKET_ERROR) {
247 * Get the value of a local clock source.
248 * This implementation supports 2 clocks: CLOCK_MONOTONIC provides high-accuracy
249 * relative time, while CLOCK_REALTIME provides a low-accuracy wall time.
251 int clock_gettime(clockid_t clock_id, struct timespec *tp)
255 if (clock_id == CLOCK_MONOTONIC)
257 static LARGE_INTEGER freq = {{0,0}};
258 LARGE_INTEGER counts;
260 QueryPerformanceCounter(&counts);
261 if (freq.QuadPart == 0)
262 QueryPerformanceFrequency(&freq);
264 tp->tv_sec = counts.QuadPart / freq.QuadPart;
265 /* Get the difference between the number of ns stored
266 * in 'tv_sec' and that stored in 'counts' */
267 unsigned long long t = tp->tv_sec * freq.QuadPart;
268 t = counts.QuadPart - t;
269 /* 't' now contains the number of cycles since the last second.
270 * We want the number of nanoseconds, so multiply out by 1,000,000,000
271 * and then divide by the frequency. */
273 tp->tv_nsec = t / freq.QuadPart;
275 else if (clock_id == CLOCK_REALTIME)
277 /* clock_gettime(CLOCK_REALTIME,...) is just an alias for gettimeofday with a
278 * higher-precision field. */
280 gettimeofday(&tv, NULL);
281 tp->tv_sec = tv.tv_sec;
282 tp->tv_nsec = tv.tv_usec * 1000;
291 int mlock(const void * addr, size_t len)
293 return !VirtualLock((LPVOID)addr, len);
296 int munlock(const void * addr, size_t len)
298 return !VirtualUnlock((LPVOID)addr, len);
301 pid_t waitpid(pid_t pid, int *stat_loc, int options)
303 log_err("%s is not implemented\n", __func__);
308 int usleep(useconds_t useconds)
310 Sleep(useconds / 1000);
314 char *basename(char *path)
316 static char name[MAX_PATH];
319 if (path == NULL || strlen(path) == 0)
322 i = strlen(path) - 1;
324 while (name[i] != '\\' && name[i] != '/' && i >= 0)
327 strcpy(name, path + i);
332 int posix_fallocate(int fd, off_t offset, off_t len)
334 const int BUFFER_SIZE = 64*1024*1024;
337 unsigned int write_len;
338 unsigned int bytes_written;
339 off_t bytes_remaining = len;
341 if (len == 0 || offset < 0)
344 buf = malloc(BUFFER_SIZE);
349 memset(buf, 0, BUFFER_SIZE);
351 if (lseek(fd, offset, SEEK_SET) == -1)
354 while (bytes_remaining > 0) {
355 if (bytes_remaining < BUFFER_SIZE)
356 write_len = (unsigned int)bytes_remaining;
358 write_len = BUFFER_SIZE;
360 bytes_written = _write(fd, buf, write_len);
361 if (bytes_written == -1) {
366 bytes_remaining -= bytes_written;
373 int ftruncate(int fildes, off_t length)
376 int old_pos = tell(fildes);
377 lseek(fildes, length, SEEK_SET);
378 HANDLE hFile = (HANDLE)_get_osfhandle(fildes);
379 bSuccess = SetEndOfFile(hFile);
380 lseek(fildes, old_pos, SEEK_SET);
384 int fsync(int fildes)
386 HANDLE hFile = (HANDLE)_get_osfhandle(fildes);
387 return !FlushFileBuffers(hFile);
390 int nFileMappings = 0;
391 HANDLE fileMappings[1024];
393 int shmget(key_t key, size_t size, int shmflg)
396 HANDLE hMapping = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, (PAGE_EXECUTE_READWRITE | SEC_RESERVE), size >> 32, size & 0xFFFFFFFF, NULL);
397 if (hMapping != NULL) {
398 fileMappings[nFileMappings] = hMapping;
399 mapid = nFileMappings;
408 void *shmat(int shmid, const void *shmaddr, int shmflg)
411 MEMORY_BASIC_INFORMATION memInfo;
412 mapAddr = MapViewOfFile(fileMappings[shmid], FILE_MAP_ALL_ACCESS, 0, 0, 0);
413 VirtualQuery(mapAddr, &memInfo, sizeof(memInfo));
414 mapAddr = VirtualAlloc(mapAddr, memInfo.RegionSize, MEM_COMMIT, PAGE_READWRITE);
418 int shmdt(const void *shmaddr)
420 return !UnmapViewOfFile(shmaddr);
423 int shmctl(int shmid, int cmd, struct shmid_ds *buf)
425 if (cmd == IPC_RMID) {
426 fileMappings[shmid] = INVALID_HANDLE_VALUE;
429 log_err("%s is not implemented\n", __func__);
434 int setuid(uid_t uid)
436 log_err("%s is not implemented\n", __func__);
441 int setgid(gid_t gid)
443 log_err("%s is not implemented\n", __func__);
458 int getrusage(int who, struct rusage *r_usage)
460 const time_t SECONDS_BETWEEN_1601_AND_1970 = 11644473600;
461 FILETIME cTime, eTime, kTime, uTime;
464 memset(r_usage, 0, sizeof(*r_usage));
466 HANDLE hProcess = GetCurrentProcess();
467 GetProcessTimes(hProcess, &cTime, &eTime, &kTime, &uTime);
468 time = ((unsigned long long)uTime.dwHighDateTime << 32) + uTime.dwLowDateTime;
469 /* Divide by 10,000,000 to get the number of seconds and move the epoch from
471 time = (time_t)(((time)/10000000) - SECONDS_BETWEEN_1601_AND_1970);
472 r_usage->ru_utime.tv_sec = time;
473 /* getrusage() doesn't care about anything other than seconds, so set tv_usec to 0 */
474 r_usage->ru_utime.tv_usec = 0;
475 time = ((unsigned long long)kTime.dwHighDateTime << 32) + kTime.dwLowDateTime;
476 /* Divide by 10,000,000 to get the number of seconds and move the epoch from
478 time = (time_t)(((time)/10000000) - SECONDS_BETWEEN_1601_AND_1970);
479 r_usage->ru_stime.tv_sec = time;
480 r_usage->ru_stime.tv_usec = 0;
484 int posix_madvise(void *addr, size_t len, int advice)
486 log_err("%s is not implemented\n", __func__);
490 /* Windows doesn't support advice for memory pages. Just ignore it. */
491 int msync(void *addr, size_t len, int flags)
493 log_err("%s is not implemented\n", __func__);
498 int fdatasync(int fildes)
500 return fsync(fildes);
503 ssize_t pwrite(int fildes, const void *buf, size_t nbyte,
506 long pos = tell(fildes);
507 ssize_t len = write(fildes, buf, nbyte);
508 lseek(fildes, pos, SEEK_SET);
512 ssize_t pread(int fildes, void *buf, size_t nbyte, off_t offset)
514 long pos = tell(fildes);
515 ssize_t len = read(fildes, buf, nbyte);
516 lseek(fildes, pos, SEEK_SET);
520 ssize_t readv(int fildes, const struct iovec *iov, int iovcnt)
522 log_err("%s is not implemented\n", __func__);
527 ssize_t writev(int fildes, const struct iovec *iov, int iovcnt)
529 log_err("%s is not implemented\n", __func__);
534 long long strtoll(const char *restrict str, char **restrict endptr,
537 return _strtoi64(str, endptr, base);
540 char *strsep(char **stringp, const char *delim)
542 char *orig = *stringp;
543 BOOL gotMatch = FALSE;
547 if (*stringp == NULL)
550 while ((*stringp)[i] != '\0') {
552 while (delim[j] != '\0') {
553 if ((*stringp)[i] == delim[j]) {
555 (*stringp)[i] = '\0';
556 *stringp = *stringp + i + 1;
573 int poll(struct pollfd fds[], nfds_t nfds, int timeout)
576 struct timeval *to = NULL;
577 fd_set readfds, writefds, exceptfds;
584 to->tv_sec = timeout / 1000;
585 to->tv_usec = (timeout % 1000) * 1000;
591 for (i = 0; i < nfds; i++)
598 if (fds[i].events & POLLIN)
599 FD_SET(fds[i].fd, &readfds);
601 if (fds[i].events & POLLOUT)
602 FD_SET(fds[i].fd, &writefds);
604 FD_SET(fds[i].fd, &exceptfds);
607 rc = select(nfds, &readfds, &writefds, &exceptfds, to);
609 if (rc != SOCKET_ERROR) {
610 for (i = 0; i < nfds; i++)
616 if ((fds[i].events & POLLIN) && FD_ISSET(fds[i].fd, &readfds))
617 fds[i].revents |= POLLIN;
619 if ((fds[i].events & POLLOUT) && FD_ISSET(fds[i].fd, &writefds))
620 fds[i].revents |= POLLOUT;
622 if (FD_ISSET(fds[i].fd, &exceptfds))
623 fds[i].revents |= POLLHUP;
630 int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
632 log_err("%s is not implemented\n", __func__);
637 DIR *opendir(const char *dirname)
639 log_err("%s is not implemented\n", __func__);
644 int closedir(DIR *dirp)
646 log_err("%s is not implemented\n", __func__);
651 struct dirent *readdir(DIR *dirp)
653 log_err("%s is not implemented\n", __func__);
660 log_err("%s is not implemented\n", __func__);
665 int inet_aton(char *addr)
667 log_err("%s is not implemented\n", __func__);
672 const char* inet_ntop(int af, const void *restrict src,
673 char *restrict dst, socklen_t size)
675 INT status = SOCKET_ERROR;
679 if (af != AF_INET && af != AF_INET6) {
680 errno = EAFNOSUPPORT;
684 WSAStartup(MAKEWORD(2,2), &wsd);
687 struct sockaddr_in si;
689 memset(&si, 0, sizeof(si));
691 memcpy(&si.sin_addr, src, sizeof(si.sin_addr));
692 status = WSAAddressToString((struct sockaddr*)&si, sizeof(si), NULL, dst, &len);
693 } else if (af == AF_INET6) {
694 struct sockaddr_in6 si6;
696 memset(&si6, 0, sizeof(si6));
697 si6.sin6_family = af;
698 memcpy(&si6.sin6_addr, src, sizeof(si6.sin6_addr));
699 status = WSAAddressToString((struct sockaddr*)&si6, sizeof(si6), NULL, dst, &len);
702 if (status != SOCKET_ERROR)
711 int inet_pton(int af, const char *restrict src, void *restrict dst)
713 INT status = SOCKET_ERROR;
717 if (af != AF_INET && af != AF_INET6) {
718 errno = EAFNOSUPPORT;
722 WSAStartup(MAKEWORD(2,2), &wsd);
725 struct sockaddr_in si;
726 INT len = sizeof(si);
727 memset(&si, 0, sizeof(si));
729 status = WSAStringToAddressA((char*)src, af, NULL, (struct sockaddr*)&si, &len);
730 if (status != SOCKET_ERROR)
731 memcpy(dst, &si.sin_addr, sizeof(si.sin_addr));
732 } else if (af == AF_INET6) {
733 struct sockaddr_in6 si6;
734 INT len = sizeof(si6);
735 memset(&si6, 0, sizeof(si6));
736 si6.sin6_family = af;
737 status = WSAStringToAddressA((char*)src, af, NULL, (struct sockaddr*)&si6, &len);
738 if (status != SOCKET_ERROR)
739 memcpy(dst, &si6.sin6_addr, sizeof(si6.sin6_addr));
742 if (status == SOCKET_ERROR) {