/*
* QEMU low level functions
- *
+ *
* Copyright (c) 2003 Fabrice Bellard
- *
+ *
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
#include <string.h>
#include <errno.h>
#include <unistd.h>
-
-#include "cpu.h"
-#if defined(USE_KQEMU)
-#include "vl.h"
+#include <fcntl.h>
+#ifdef HOST_SOLARIS
+#include <sys/types.h>
+#include <sys/statvfs.h>
#endif
+/* Needed early for HOST_BSD etc. */
+#include "config-host.h"
+
#ifdef _WIN32
#include <windows.h>
-#elif defined(_BSD)
+#elif defined(HOST_BSD)
#include <stdlib.h>
#else
#include <malloc.h>
#endif
-void *get_mmap_addr(unsigned long size)
-{
- return NULL;
-}
-
-void qemu_free(void *ptr)
-{
- free(ptr);
-}
+#include "qemu-common.h"
+#include "sysemu.h"
+#include "qemu_socket.h"
-void *qemu_malloc(size_t size)
+#if defined(_WIN32)
+void *qemu_memalign(size_t alignment, size_t size)
{
- return malloc(size);
+ return VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
}
-#if defined(_WIN32)
-
void *qemu_vmalloc(size_t size)
{
/* FIXME: this is not exactly optimal solution since VirtualAlloc
#if defined(USE_KQEMU)
+#ifdef __OpenBSD__
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/mount.h>
+#else
+#ifndef __FreeBSD__
#include <sys/vfs.h>
+#endif
+#endif
+
#include <sys/mman.h>
#include <fcntl.h>
-void *kqemu_vmalloc(size_t size)
+static void *kqemu_vmalloc(size_t size)
{
static int phys_ram_fd = -1;
static int phys_ram_size = 0;
+ void *ptr;
+
+/* no need (?) for a dummy file on OpenBSD/FreeBSD */
+#if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
+ int map_anon = MAP_ANON;
+#else
+ int map_anon = 0;
const char *tmpdir;
char phys_ram_file[1024];
- void *ptr;
+#ifdef HOST_SOLARIS
+ struct statvfs stfs;
+#else
struct statfs stfs;
+#endif
if (phys_ram_fd < 0) {
tmpdir = getenv("QEMU_TMPDIR");
if (!tmpdir)
+#ifdef HOST_SOLARIS
+ tmpdir = "/tmp";
+ if (statvfs(tmpdir, &stfs) == 0) {
+#else
tmpdir = "/dev/shm";
if (statfs(tmpdir, &stfs) == 0) {
+#endif
int64_t free_space;
int ram_mb;
- extern int ram_size;
free_space = (int64_t)stfs.f_bavail * stfs.f_bsize;
if ((ram_size + 8192 * 1024) >= free_space) {
ram_mb = (ram_size / (1024 * 1024));
- fprintf(stderr,
+ fprintf(stderr,
"You do not have enough space in '%s' for the %d MB of QEMU virtual RAM.\n",
tmpdir, ram_mb);
if (strcmp(tmpdir, "/dev/shm") == 0) {
fprintf(stderr, "To have more space available provided you have enough RAM and swap, do as root:\n"
- "umount /dev/shm\n"
- "mount -t tmpfs -o size=%dm none /dev/shm\n",
+ "mount -o remount,size=%dm /dev/shm\n",
ram_mb + 16);
} else {
- fprintf(stderr,
+ fprintf(stderr,
"Use the '-m' option of QEMU to diminish the amount of virtual RAM or use the\n"
"QEMU_TMPDIR environment variable to set another directory where the QEMU\n"
"temporary RAM file will be opened.\n");
exit(1);
}
}
- snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/qemuXXXXXX",
+ snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/qemuXXXXXX",
tmpdir);
phys_ram_fd = mkstemp(phys_ram_file);
if (phys_ram_fd < 0) {
- fprintf(stderr,
+ fprintf(stderr,
"warning: could not create temporary file in '%s'.\n"
"Use QEMU_TMPDIR to select a directory in a tmpfs filesystem.\n"
"Using '/tmp' as fallback.\n",
tmpdir);
- snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/qemuXXXXXX",
+ snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/qemuXXXXXX",
"/tmp");
phys_ram_fd = mkstemp(phys_ram_file);
if (phys_ram_fd < 0) {
- fprintf(stderr, "Could not create temporary memory file '%s'\n",
+ fprintf(stderr, "Could not create temporary memory file '%s'\n",
phys_ram_file);
exit(1);
}
}
size = (size + 4095) & ~4095;
ftruncate(phys_ram_fd, phys_ram_size + size);
- ptr = mmap(NULL,
- size,
- PROT_WRITE | PROT_READ, MAP_SHARED,
+#endif /* !(__OpenBSD__ || __FreeBSD__ || __DragonFly__) */
+ ptr = mmap(NULL,
+ size,
+ PROT_WRITE | PROT_READ, map_anon | MAP_SHARED,
phys_ram_fd, phys_ram_size);
if (ptr == MAP_FAILED) {
fprintf(stderr, "Could not map physical memory\n");
return ptr;
}
-void kqemu_vfree(void *ptr)
+static void kqemu_vfree(void *ptr)
{
/* may be useful some day, but currently we do not need to free */
}
#endif
+void *qemu_memalign(size_t alignment, size_t size)
+{
+#if defined(_POSIX_C_SOURCE)
+ int ret;
+ void *ptr;
+ ret = posix_memalign(&ptr, alignment, size);
+ if (ret != 0)
+ return NULL;
+ return ptr;
+#elif defined(HOST_BSD)
+ return valloc(size);
+#else
+ return memalign(alignment, size);
+#endif
+}
+
/* alloc shared memory pages */
void *qemu_vmalloc(size_t size)
{
if (kqemu_allowed)
return kqemu_vmalloc(size);
#endif
-#ifdef _BSD
- return valloc(size);
-#else
- return memalign(4096, size);
-#endif
+ return qemu_memalign(getpagesize(), size);
}
void qemu_vfree(void *ptr)
#endif
-void *qemu_mallocz(size_t size)
+int qemu_create_pidfile(const char *filename)
{
- void *ptr;
- ptr = qemu_malloc(size);
- if (!ptr)
- return NULL;
- memset(ptr, 0, size);
- return ptr;
+ char buffer[128];
+ int len;
+#ifndef _WIN32
+ int fd;
+
+ fd = 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;
+ DWORD flags;
+ OVERLAPPED overlap;
+ BOOL ret;
+
+ /* Open for writing with no sharing. */
+ file = CreateFile(filename, GENERIC_WRITE, 0, NULL,
+ OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+
+ if (file == INVALID_HANDLE_VALUE)
+ return -1;
+
+ flags = LOCKFILE_EXCLUSIVE_LOCK | LOCKFILE_FAIL_IMMEDIATELY;
+ overlap.hEvent = 0;
+ /* Lock 1 byte. */
+ ret = LockFileEx(file, flags, 0, 0, 1, &overlap);
+ if (ret == 0)
+ return -1;
+
+ /* Write PID to file. */
+ 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;
}
-char *qemu_strdup(const char *str)
+#ifdef _WIN32
+
+/* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
+#define _W32_FT_OFFSET (116444736000000000ULL)
+
+int qemu_gettimeofday(qemu_timeval *tp)
{
- char *ptr;
- ptr = qemu_malloc(strlen(str) + 1);
- if (!ptr)
- return NULL;
- strcpy(ptr, str);
- return ptr;
+ 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 */
+
+
+#ifdef _WIN32
+void socket_set_nonblock(int fd)
+{
+ unsigned long opt = 1;
+ ioctlsocket(fd, FIONBIO, &opt);
+}
+
+int inet_aton(const char *cp, struct in_addr *ia)
+{
+ uint32_t addr = inet_addr(cp);
+ if (addr == 0xffffffff)
+ return 0;
+ ia->s_addr = addr;
+ return 1;
+}
+#else
+void socket_set_nonblock(int fd)
+{
+ int f;
+ f = fcntl(fd, F_GETFL);
+ fcntl(fd, F_SETFL, f | O_NONBLOCK);
+}
+#endif
projects / qemu / blobdiff