#else
-#ifdef _BSD
+#ifdef _WIN32
+#include <windows.h>
+#elif defined(_BSD)
#include <stdlib.h>
#else
#include <malloc.h>
#endif
-#ifdef _WIN32
-/* XXX: find a solution to have page aligned data */
-#define memalign(align, size) malloc(size)
-#endif
int qemu_write(int fd, const void *buf, size_t n)
{
return malloc(size);
}
-#if defined(USE_KQEMU)
+#if defined(_WIN32)
+
+void *qemu_vmalloc(size_t size)
+{
+ /* FIXME: this is not exactly optimal solution since VirtualAlloc
+ has 64Kb granularity, but at least it guarantees us that the
+ memory is page aligned. */
+ return VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
+}
+
+void qemu_vfree(void *ptr)
+{
+ VirtualFree(ptr, 0, MEM_RELEASE);
+}
+
+#elif defined(USE_KQEMU)
+#include <sys/vfs.h>
#include <sys/mman.h>
#include <fcntl.h>
const char *tmpdir;
char phys_ram_file[1024];
void *ptr;
+ struct statfs stfs;
if (phys_ram_fd < 0) {
tmpdir = getenv("QEMU_TMPDIR");
if (!tmpdir)
tmpdir = "/dev/shm";
+ if (statfs(tmpdir, &stfs) == 0) {
+ 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,
+ "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",
+ ram_mb + 16);
+ } else {
+ 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",
tmpdir);
if (mkstemp(phys_ram_file) < 0) {