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Tell users about out-of-memory errors

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Aborting without an error message when memory is short
is not helpful, so print the reason for the abort.

Try
	qemu -m 1000000
or
	qemu -m 2000 (win32)

to force an out-of-memory error.

v2:
* Fix error message for win32.
* Fix error message for posix_memalign.

Thanks to malc for the hints.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Stefan Weil 2010-01-21 22:24:58 +01:00 committed by Anthony Liguori
parent 776e1bbb6c
commit d2d5adcb58
1 changed files with 9 additions and 1 deletions
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10
osdep.c
View file

@ -52,6 +52,11 @@
static void *oom_check(void *ptr)
{
if (ptr == NULL) {
#if defined(_WIN32)
fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
#else
fprintf(stderr, "Failed to allocate memory: %s\n", strerror(errno));
#endif
abort();
}
return ptr;
@ -91,8 +96,11 @@ void *qemu_memalign(size_t alignment, size_t size)
int ret;
void *ptr;
ret = posix_memalign(&ptr, alignment, size);
if (ret != 0)
if (ret != 0) {
fprintf(stderr, "Failed to allocate %zu B: %s\n",
size, strerror(ret));
abort();
}
return ptr;
#elif defined(CONFIG_BSD)
return oom_check(valloc(size));