extern int madvise(caddr_t, size_t, int);
#endif
-#ifdef CONFIG_EVENTFD
-#include <sys/eventfd.h>
-#endif
-
-#ifdef _WIN32
-#include <windows.h>
-#elif defined(CONFIG_BSD)
-#include <stdlib.h>
-#else
-#include <malloc.h>
-#endif
-
#include "qemu-common.h"
#include "trace.h"
-#include "sysemu.h"
#include "qemu_socket.h"
int qemu_madvise(void *addr, size_t len, int advice)
#endif
}
-int qemu_create_pidfile(const char *filename)
-{
- char buffer[128];
- int len;
-#ifndef _WIN32
- int fd;
-
- fd = qemu_open(filename, O_RDWR | O_CREAT, 0600);
- if (fd == -1)
- return -1;
-
- if (lockf(fd, F_TLOCK, 0) == -1)
- return -1;
-
- len = snprintf(buffer, sizeof(buffer), "%ld\n", (long)getpid());
- if (write(fd, buffer, len) != len)
- return -1;
-#else
- HANDLE file;
- OVERLAPPED overlap;
- BOOL ret;
- memset(&overlap, 0, sizeof(overlap));
-
- file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
- OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
-
- if (file == INVALID_HANDLE_VALUE)
- return -1;
-
- len = snprintf(buffer, sizeof(buffer), "%ld\n", (long)getpid());
- ret = WriteFileEx(file, (LPCVOID)buffer, (DWORD)len,
- &overlap, NULL);
- if (ret == 0)
- return -1;
-#endif
- return 0;
-}
-
-#ifdef _WIN32
-
-/* mingw32 needs ffs for compilations without optimization. */
-int ffs(int i)
-{
- /* Use gcc's builtin ffs. */
- return __builtin_ffs(i);
-}
-
-/* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
-#define _W32_FT_OFFSET (116444736000000000ULL)
-
-int qemu_gettimeofday(qemu_timeval *tp)
-{
- union {
- unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
- FILETIME ft;
- } _now;
-
- if(tp)
- {
- GetSystemTimeAsFileTime (&_now.ft);
- tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
- tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
- }
- /* Always return 0 as per Open Group Base Specifications Issue 6.
- Do not set errno on error. */
- return 0;
-}
-#endif /* _WIN32 */
-
/*
* Opens a file with FD_CLOEXEC set
return total;
}
-#ifndef _WIN32
-/*
- * Creates an eventfd that looks like a pipe and has EFD_CLOEXEC set.
- */
-int qemu_eventfd(int fds[2])
-{
-#ifdef CONFIG_EVENTFD
- int ret;
-
- ret = eventfd(0, 0);
- if (ret >= 0) {
- fds[0] = ret;
- qemu_set_cloexec(ret);
- if ((fds[1] = dup(ret)) == -1) {
- close(ret);
- return -1;
- }
- qemu_set_cloexec(fds[1]);
- return 0;
- }
-
- if (errno != ENOSYS) {
- return -1;
- }
-#endif
-
- return qemu_pipe(fds);
-}
-
-/*
- * Creates a pipe with FD_CLOEXEC set on both file descriptors
- */
-int qemu_pipe(int pipefd[2])
-{
- int ret;
-
-#ifdef CONFIG_PIPE2
- ret = pipe2(pipefd, O_CLOEXEC);
- if (ret != -1 || errno != ENOSYS) {
- return ret;
- }
-#endif
- ret = pipe(pipefd);
- if (ret == 0) {
- qemu_set_cloexec(pipefd[0]);
- qemu_set_cloexec(pipefd[1]);
- }
-
- return ret;
-}
-#endif
-
/*
* Opens a socket with FD_CLOEXEC set
*/